CEBC · California Existing Building Code
Which CEBC definitions are most likely to change applicability or interpretation?
Plain English: Start every code question by checking CEBC **§201** (how definitions apply) and **§202** (the actual definitions). If a term points to another California code or agency, that outside definition controls — and that is the most common source of surprises.
Last reviewed: July 6, 2026
What the code requires — 2–4 sentences
The CEBC tells you where to look for definitions and how to apply them: §201.1 says the words and terms in Chapter 2 govern use in the code, §201.2 sets basic grammatical rules, §201.3 says some terms are defined by other California codes, and §201.4 defaults undefined terms to ordinary meanings.
When a requirement depends on a defined term, start with §201.1–§201.4 and the definition in §202; if §202 cross‑references another California code, the external definition controls.
Why this matters
Small wording or cross‑references can change whether a project is an addition, an alteration, an accessory dwelling unit, or falls under agency‑specific rules — and that changes what work, fees, and upgrades apply.
Requirements in detail
Use this checklist when a definition may change applicability: (1) Is the term defined in §202? (2) Does §201.3 point to another California code or administrative chapter? (3) Does ordinary meaning (§201.4) fill any gap?
Decision‑relevant dimensions (quick table)
| Decision dimension | Typical values / trigger | Why it changes applicability | Code reference |
|---|---|---|---|
| Who defines the term | Defined in CEBC §202 vs defined in another California code | If another California code defines it, that external definition governs and can change whether a requirement applies | §201.3 |
| Nature of work | Addition (increase in floor area/height/stories) vs Alteration vs Repair | Classification changes which compliance method and which upgrades or triggers apply | §202 definitions for ADDITION and ALTERATION |
| Legal cross‑reference | Statutory definitions (e.g., Government Code for ADU) | Statute updates or agency interpretations can change what counts as the defined item | ACCESSORY DWELLING UNIT in §202 (see Government Code ref.) |
| Agency override | Agency administrative code sections for specific state agencies (OSHPD, DSA, etc.) | Agency rules may govern over Chapter 2 for their projects (different definitions or hierarchy) | §201.3 (agency notes) |
| Grammar/number/gender | Present/future tense; singular/plural (interchangeability) | Affects permit language and enforcement timing (see §201.2) | §201.2 |
| Ordinary meaning fallback | No definition found in code or other codes | May produce subjective interpretation; courts/officials may apply dictionary meaning per §201.4 | §201.4 |
Key definitions in §202 that commonly shift outcomes
- Addition — “An extension or increase in floor area, number of stories, or height of a building or structure.” A seemingly small square‑foot addition can convert a project from an alteration to an addition, changing applicable triggers.
- Alteration — “Any construction or renovation to an existing structure other than a repair or addition.” This negative definition makes scope analysis sensitive to how you classify individual tasks.
- Accessory Dwelling Unit (ADU) — CEBC repeats the statutory characterization (complete independent living facilities; references Government Code). Statutory changes to ADU law will therefore change CEBC application.
- Approved — Means “acceptable to the code official,” but the code notes exceptions where agency approval language differs; do not assume universal acceptance.
Exceptions & special cases
- Agency definitions govern: where projects fall under OSHPD, DSA, or other state agencies, the administrative code or agency sections cited in §201.3 can supersede Chapter 2 definitions for those projects.
- Statutory definitions: ACCESSORY DWELLING UNIT is tied to Government Code — legislative change to that statute will change CEBC scope for ADUs.
- Undefined terms: if a term is not defined in CEBC or referenced codes, §201.4 requires using the ordinary meaning “as the context implies,” which can produce variation between jurisdictions.
Common mistakes
- Treating “alteration” and “addition” interchangeably. The CEBC definition for ADDITION is explicit about adding floor area, stories, or height; if you call something an alteration you may avoid addition triggers incorrectly.
- Ignoring §201.3: failing to check whether a term is defined by another California code (e.g., Energy, Fire, Administrative) leads to wrong code applications.
- Over‑relying on plain English: assuming the code’s everyday wording is the controlling meaning without checking §201.2 (interchangeability) and §201.4 (fallback to ordinary meanings) can misstate scope.
- Not accounting for agency notes/exceptions (e.g., OSHPD references in §201.3). Those agency notes may change which definition or hierarchy applies on a job.
Worked example — a concrete scenario
Scenario: Existing two‑story commercial building has 10,000 ft². The owner proposes an interior reconfiguration that removes some partitions and adds 1,200 ft² of new mezzanine area and raises the roof in one bay by 2 ft.
Step 1 — Is it an ADDITION? The CEBC §202 definition for ADDITION requires an extension or increase in floor area, number of stories, or height. Adding 1,200 ft² (a measurable increase in floor area) meets that definition, so the project qualifies as an addition under the CEBC definition.
Step 2 — If the project were only reconfiguring without increasing floor area, it would likely be an ALTERATION (CEBC §202) — a different compliance path. Always document the square‑foot change because that numeric change determines classification per the definition.
Step 3 — Check §201.3 for cross‑references: if the project triggers terms defined in another code (for example, energy or fire definitions), those external definitions could change what work is required. Confirm whether agency‑specific rules apply.
Numbers summary: 1,200 ft² added to 10,000 ft² = 12% increase — CEBC classification depends first on whether that increase exists (per §202), then on downstream thresholds in Chapters that use the classification.
Related provisions
- §201.1 — Scope: terms in Chapter 2 govern use in the code.
- §201.2 — Interchangeability: tense, gender, singular/plural rules.
- §201.3 — Terms defined in other codes; agency overrides and cross‑references.
- §201.4 — Terms not defined — ordinary accepted meanings.
- §202 — General definitions (e.g., ADDITION, ALTERATION, ACCESSORY DWELLING UNIT, APPROVED).
- Section 602 / Chapter 6 — Classification of work (where Level 1/2/3 triggers are discussed; classification depends on how §202 labels the work).
Code references
Grounded in the retrieved California Existing Building Code — click a citation to read the verbatim passage:
CEBC § 170.2 Medium relevance — show source text
The rated energy capacity shall be not less than the Minimum Rated Useable Energy Capacity determined by Equation 170.2-E, or by Equation 170.2-F if SARA was used to determine the PV capacity in Section 170.2-D, and the rated power capacity shall be not less than the Minimum Power Capacity determined by Equation 170.2-G. In mixed occupancy buildings, the total battery system capacity for the building shall be determined by applying the Minimum Rated Usable Energy Capacity to each of the listed building types and summing the capacities determined for each.
EQUATION 170.2-E—BATTERY ENERGY STORAGE SYSTEM MINIMUM RATED USABLE ENERGY CAPACITY kWh batt = k((CFA × B)/(1000 × C [0.5] ))
— EQUATION 170.2-F BATTERY ENERGY STORAGE SYSTEM MINIMUM RATED USABLE ENERGY CAPACITY, SARA-ADJUSTED kWh batt = k((CFA × B)/(1000 × C [0.5] )) × (kWP Vdc,SARA /kWP Vdc )
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MULTIFAMILY BUILDINGS—PERFORMANCE AND PRESCRIPTIVE COMPLIANCE APPROACHES
where:
kWh batt = Minimum Rated Usable Energy Capacity of the BESS in kWh.
kW PVdc = Minimum Rated PV System Capacity in kW from Equation 170.2D. kW PVdc, SARA = Minimum Rated PV System Capacity in kW from the SARA calculation. CFA = Conditioned floor area that is subject to the PV system requirements of Section 170.2(g) in square feet.
B = BESS Capacity Factor in Wh/square foot as specified in Table 170.2-V for the building type.
C = Rated single charge-discharge cycle AC to AC (round-trip) efficiency of the BESS.
EQUATION 170.2-G—BATTERY ENERGY STORAGE SYSTEM MINIMUM RATED POWER CAPACITY
kW batt = kW batt /4
where:
kW batt = Minimum Rated Power Capacity of the BESS in kW dc .
kWh batt = Minimum Rated Usable Energy Capacity of the BESS in kWh.
Exception 1 to Section 170.2(h): No BESS is required if the installed PV system capacity is less than 15 percent of the capacity determined by Equation 170.2-D.
Exception 2 to Section 170.2(h): No BESS is required in buildings with BESS requirements with less than 10 kWh minimum rated usable energy capacity.
|TABLE 170.
CBC § 301 Medium relevance — show source text
The IEBC is a model code in the International Code family of codes intended to provide requirements for repair and alternative approaches for alterations, changes of occupancy and additions to existing buildings. A large number of existing buildings and structures do not comply with the current building code requirements for new construction. Although many of these buildings are potentially salvageable, rehabilitation is often cost-prohibitive because compliance with all the requirements for new construction could require extensive changes that go well beyond the value of the building or the original scope of the alteration. At the same time, it is necessary to regulate construction in existing buildings that undergo additions, alterations, extensive repairs or change of occupancy. Such activity represents an opportunity to ensure that new construction complies with the current building codes and that existing conditions are maintained, at a minimum, to their current level of compliance or are improved as required to meet basic safety levels. To accomplish this objective, and to make the alteration process easier, this code allows for options for controlled departure from full compliance with the International Codes dealing with new construction, while maintaining basic levels for fire safety, structural and life safety features of the rehabilitated building.
This code provides three main options for a designer in dealing with alterations of existing buildings. These are laid out in Section 301 of this code:
Option 1: Work for alteration, change of occupancy or addition of all existing buildings shall be done in accordance with the Prescriptive Compliance Method given in Chapter 5. It should be noted that this method originates from the former Chapter 34 of the IBC (2012 and earlier editions).
Option 2: Work for alteration, change of occupancy or addition of all existing buildings shall be done in accordance with the Work Area Compliance Method given in Chapters 6 through 12.
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Option 3: Work for alteration, change of occupancy or addition of all existing buildings shall be done in accordance with the Performance Compliance Method given in Chapter 13. It should be noted that this option was also provided in the former Chapter 34 of the IBC (2012 and earlier editions).
Under limited circumstances, a building alteration can be made to comply with the laws under which the building was originally built, as long as the accessibility requirements are met, there has been no substantial structural damage and there will be limited structural alteration. Flood hazard provisions also must still be addressed where there is a substantial improvement.
Note that all repairs must comply with Chapter 4 and all relocated buildings are addressed by Chapter 14.
ARRANGEMENT AND FORMAT OF THE 2025 CEBC
The format of the CEBC allows each chapter to be devoted to a particular subject. The following table shows how the CEBC is divided. The subsequent table shows CEBC requirements that are correlated with other California Codes. The chapter synopses detail the scope and intent of the provisions of the CEBC.
CEBC § 1.10.1 Medium relevance — show source text
CHAPTER TOPICS Col2 CHAPTER SUBJECTS 1, 2 Administrative Requirements and Definitions 3 Provisions for all Compliance Methods 4 Repairs 5 Prescriptive Compliance Method for Existing Buildings 6–11 Work Area Compliance Method for Existing Buildings 13 Performance Compliance Method for Existing Buildings 14 Relocated Buildings 15 Construction Safeguards 16 Referenced Standards Appendix A Guidelines for Seismic Retrofit of Existing Buildings Appendix B Supplementary Accessibility Requirements for Existing Buildings Appendix C Guidelines for Wind Retrofit of Existing Buildings Appendix D Board of Appeals Appendix E Temporary Emergency Uses Resource A Guidelines on Fire Ratings of Archaic Materials and Assemblies CALIFORNIA BUILDING CODE CORRELATED TOPICS
The CEBC requirements for construction safeguards are directly correlated to the requirements of the CBC. The following table shows chapters of the CBC that are correlated with the CEBC:
CEBC/CBC CORRELATED TOPICS Col2 Col3 CEBC CHAPTER/SECTION CBC CHAPTER/SECTION SUBJECT Chapter 15 Chapter 33 Construction safeguards Chapter 1 Scope and Administration.
Chapter 1 establishes the limits of applicability of the code and describes how the code is to be applied and enforced. The provisions of Chapter 1 establish the authority and duties of the code official appointed by the authority having jurisdiction and also establish the rights and privileges of the design professional, contractor and property owner.
Chapter 2 Definitions.
Chapter 2 is the repository of the definitions of terms used in the body of the code. The user of the code should be familiar with and consult this chapter because the definitions are essential to the correct interpretation of the code and because the user may not be aware that a term is defined.
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Chapter 3 Provisions for All Compliance Methods.
Chapter 3 guides the use of the three compliance methods of the CEBC and provides requirements that apply globally. The globally applicable requirement include general requirements related to buildings materials and other applicable codes, storm shelters, structural loads, in-situ load tests, accessibility, smoke alarms, carbon monoxide detection and exterior wall coverings.
Chapter 3A Provisions for All Compliance Methods.
Chapter 3A controls the compliance options for alteration, repair, addition, evaluation and change of occupancy of existing structures regulated by the Department of Health Care Access and Information/Office of Statewide Hospital Planning and Development, which include hospitals and correctional treatment centers (applications listed in Sections 1.10.1 (OSHPD 1).
Chapter 4 Repairs.
Chapter 4, a chapter independent of the three compliance methods, governs the repair of existing buildings. The provisions define conditions under which repairs may be made using materials and methods like those of the original construction or the extent to which repairs must comply with requirements for new buildings.
Chapter 4A Repairs.
Chapter 4A governs the repair of existing buildings regulated by the Department of Health Care Access and Information/Office of State- wide Hospital Planning and Development, which include hospitals and correctional treatment centers (applications listed in Sections 1.10.1 (OSHPD 1).
CEBC § 5.105.2 Medium relevance — show source text
Exception: Combined addition(s) to existing building(s) of two times the area or more of the existing building(s) is not eligible to meet compliance with Section 5.105.2 or Section A5.105.2.
A5.409.2 Whole building life cycle assessment. Projects shall meet the minimum requirements of Section A5.409.2 for Tier 1 or Tier 2 compliance.
A5.409.2.1 Tier 1. Projects shall conduct a cradle-to-grave whole building life cycle assessment meeting the requirements of Section 5.409.2 and performed in accordance with ISO 14040 and 14044, excluding operating energy, demonstrating a minimum 15-percent reduction in global warming potential (GWP) as compared to a reference baseline building of similar size, function, complexity, type of construction, material specification, and location that meets the requirements of all parts of the California Building Standards Code currently in effect. Software used to conduct the whole building life cycle assessment, including reference baseline building, shall have a data set compliant with ISO 14044, and ISO 21930 or EN 15804, and the software shall conform to ISO 21931 and/or EN 15978. The software tools and data sets shall be the same for evaluation of both the baseline building and the proposed building.
Exception: For projects that include building reuse, the reference baseline building shall exclude the reused elements. The percent reduction in GWP shall be achieved through the design and construction of new project elements.
A5.409.2.2 Tier 2. Projects shall conduct a cradle-to-grave whole building life cycle assessment meeting the requirements of Section 5.409.2 and performed in accordance with ISO 14040 and ISO 14044, excluding operating energy, demonstrating a minimum 20-percent reduction in GWP as compared to a reference baseline building of similar size, function, complexity, type of construction, material specification, and location that meets the requirements of all parts of the California Building Standards Code currently in effect. Software used to conduct the whole building life cycle assessment, including reference baseline building, shall have a data set compliant with ISO 14044, and ISO 21930 or EN 15804, and the software shall conform to ISO 21931 and/or EN 15978. The software tools and data sets shall be the same for evaluation of both the baseline building and the proposed building.
Exception: For projects that include building reuse, the reference baseline building shall not be of new construction and shall retain existing materials. The percent reduction in GWP shall be achieved through the design and construction of new project elements.
A5.409.2.3 Verification of compliance. A summary of the GWP analysis produced by the software and Worksheet WS-7 signed by the design professional of record shall be provided in the construction documents as documentation of compliance. A copy of the whole building life cycle assessment which includes the GWP analysis produced by the software, in addition to maintenance and training information, shall be included in the operation and maintenance manual and shall be provided to the owner at the close of construction. The enforcing agency may require inspection and inspection reports in accordance with Sections 702.2 and 703.1 during and at completion of construction to demonstrate substantial conformance. Inspection shall be performed by the design professional of record or third party acceptable to the enforcing agency.
A5.409.3 Product GWP compliance—prescriptive path. Each product that is permanently installed and listed in Table A5.409.3 shall have a Type III environmental product declaration (EPD), either product-specific or factory-specific.
CRC § 2025 Medium relevance — show source text
It is important to understand that the IRC contains coverage for what is conventional and common in residential construction practice. While the IRC will provide all of the needed coverage for most residential construction, it might not address construction practices and systems that are atypical or rarely encountered in the industry. Therefore, the IRC contains several references to other codes either as an alternative to the provisions of the IRC or where the IRC lacks coverage for a particular type of structure, design, system, appliance or method of construction. In other words, the IRC is meant to be all inclusive for typical residential construction and it relies on other codes only where alternatives are desired or where the code lacks coverage for the uncommon aspect of residential construction. Of course, the IRC constantly evolves to address new technologies and construction practices that were once uncommon, but are now common.
The IRC is unique in that much of it, including Chapters 3 through 9 and Chapters 34 through 43, is presented in an ordered format that is consistent with the normal progression of construction, starting with the design phase and continuing through the final trimout phase. This is consistent with the “cookbook” philosophy of the IRC.
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Arrangement and Format of the 2025 CRC
The CRC is divided into nine main parts, specifically: Part I—Administrative, Part II—Definitions, Part III—Building Planning and Construction, Part IV—Energy Conservation, Part V—Mechanical, Part VI—Fuel Gas, Part VII—Plumbing, Part VIII—Electrical and Part IX—Referenced Standards. Parts IV through VIII of IRC are not adopted in California and replaced with references to appropriate parts of Title 24. The following provides a brief description of the content of each chapter and appendix of the CRC:
Chapter 1 Scope and Administration.
Chapter 1 establishes the limits of applicability of the code and describes how the code is to be applied and enforced. The provisions of Chapter 1 establish the authority and duties of the code official appointed by the authority having jurisdiction and also establish the rights and privileges of the design professional, contractor and property owner.
Chapter 2 Definitions.
Chapter 2 is the repository of the definitions of terms used in the body of the code. The user of the code should be familiar with and consult this chapter because the definitions are essential to the correct interpretation of the code and because the user may not be aware that a term is defined.
Chapter 3 Building Planning.
Chapter 3 provides guidelines for a minimum level of structural integrity, life safety, fire safety and livability for inhabitants of dwelling units regulated by this code. Chapter 3 is a compilation of the code requirements specific to the building planning sector of the design and construction process. This chapter sets forth code requirements dealing with light, ventilation, sanitation, minimum room size, ceiling height and environmental comfort. Chapter 3 establishes life-safety provisions including limitations on glazing used in hazardous areas, specifications on stairways, use of guards at elevated surfaces, window and fall protection, and rules for means of egress. Snow, wind and seismic design live and dead loads and flood-resistant construction, as well as solar energy systems are addressed in this chapter.
Chapter 4 Foundations.
CEBC § 0.514 Medium relevance — show source text
**Allowance for the total area within the drip line of the canopy.
Luminaires qualifying for this allowance shall be located under the canopy.|0.514
w/ft2|1.005
w/ft2|1.358
w/ft2|2.285
w/ft2| ||**Sales canopies allowance for the total area within the drip line of the canopy.**Luminaires qual-
ifying for this allowance shall be located under the canopy.|No
allowance|0.655
w/ft2|0.908
w/ft2|1.135
w/ft2| ||**Nonsales canopies.**Allowance for the total area within the drip line of the canopy. Luminaires
qualifying for this allowance shall be located under the canopy.|0.084
w/ft2|0.205
w/ft2|0.408
w/ft2|0.585
w/ft2| ||**Guard stations.**Allowance up to 1,000 square feet per vehicle lane. Guard stations provide
access to secure areas controlled by security personnel who stop and may inspect vehicles and
vehicle occupants, including identification, documentation, vehicle license plates and vehicle
contents. Qualifying luminaires shall be within two mounting heights of a vehicle lane or the
guardhouse.|0.154
w/ft2|0.355
w/ft2|0.708
w/ft2|0.985
w/ft2| ||**Student pick-up/drop-off zone.**Allowance for the area of the student pick-up/drop-off zone, with
or without canopy, for preschool through 12th grade school campuses. A student pick-up/drop off
zone is a curbside, controlled traffic area on a school campus where students are picked up and
dropped off from vehicles. The allowed area shall be the smaller of the actual width or 25 feet,
times the smaller of the actual length or 250 feet. Qualifying luminaires shall be within two mount-
ing heights of the student pick-up/drop-off zone.|No
allowance|0.12
w/ft2|0.45
w/ft2|No
allowance| ||**Outdoor dining.**Allowance for the total illuminated hardscape of outdoor dining. Outdoor dining
areas are hardscape areas used to serve and consume food and beverages. Qualifying luminaires
shall be within 2 mounting heights of the hardscape area of outdoor dining.|0.014
w/ft2|0.135
w/ft2|0.258
w/ft2|0.435
w/ft2| ||**Special security lighting for retail parking and pedestrian hardscape.**This additional allowance
is for illuminated retail parking and pedestrian hardscape identified as having special security
needs. This allowance shall be in addition to the building entrance or exit allowance.|0.007
w/ft2|0.009
w/ft2|0.019
w/ft2|No
allowance|CEBC § 1-2 Medium relevance — show source text
Population growth and the expanding urban development into traditionally nonurban areas have increasingly brought humans into contact with wildfires. According to the National Fire Protection Agency (NFPA), every year, wildfires burn across the United States and a growing number of people are living where wildfires are a real risk. In 2018 more than 58,000 fires burned nearly 9 million acres across the US. More than 25,000 structures were destroyed, including 18,137 residences and 229 commercial structures. California accounted for the highest number of structures lost in one state due to the number of significant fires, including the Mendocino Complex, Carr, Camp and Woolsey fires.
The IWUIC is a model code that is intended to be adopted and used supplemental to the adopted building and fire codes of a jurisdiction. The unrestricted use of property in wildland-urban interface areas is a potential threat to life and property from fire and resulting erosion. The IWUIC has as its objective the establishment of minimum special regulations for the safeguarding of life and
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property from the intrusion of fire from wildland fire exposures and fire exposures from adjacent structures and to prevent structure fires from spreading to wildland fuels, even in the absence of fire department intervention.
Safeguards to prevent the occurrence of fires and to provide adequate fire protection facilities to control the spread of fire in wildland-urban interface areas are provided in a tiered manner commensurate with the relative level of hazard present.
ARRANGEMENT AND FORMAT OF THE 2025 CWUIC
The format of the CWUIC allows each chapter to be devoted to a particular subject. The following table shows how the CWUIC is divided. The chapter synopses detail the scope and intent of the provisions of the CWUIC.
CHAPTER TOPICS Col2 CHAPTER SUBJECT 1-2 Administration and Definitions 3-4 Wildland-Urban Interface Area Designation and Requirements 5 Building Construction Regulations 6 Fire Protection Requirements 7 Referenced Standards Appendices A-I Adoptable and Informational Appendices Chapter 1 Scope and Administration.
Chapter 1 establishes the limits of applicability of the code and describes how the code is to be applied and enforced. The provisions of Chapter 1 establish the authority and duties of the code official appointed by the authority having jurisdiction and also establish the rights and privileges of the design professional, contractor and property owner.
Chapter 2 Definitions.
Chapter 2 is the repository of the definitions of terms used in the body of the code. The user of the code should be familiar with and consult this chapter because the definitions are essential to the correct interpretation of the code and because the user may not be aware that a term is defined.
Chapter 3 Wildland-Urban Interface Areas.
Chapter 3 provides for the fundamental aspect of applying the code—the legal declaration and establishment of wildland-urban interface areas within the adopting jurisdiction, mapping of the area, periodic review and updates.
Chapter 4 Wildland-Urban Interface Area Requirements.
The requirements of Chapter 4 apply to all occupancies in the wildland-urban interface and pertain to all of the following:
Fire service access to the property that is to be protected, including fire apparatus access roads and off-road driveways.
Premises identification.
CEBC § 1.10.1 Medium relevance — show source text
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Chapter 3 Provisions for All Compliance Methods.
Chapter 3 guides the use of the three compliance methods of the CEBC and provides requirements that apply globally. The globally applicable requirement include general requirements related to buildings materials and other applicable codes, storm shelters, structural loads, in-situ load tests, accessibility, smoke alarms, carbon monoxide detection and exterior wall coverings.
Chapter 3A Provisions for All Compliance Methods.
Chapter 3A controls the compliance options for alteration, repair, addition, evaluation and change of occupancy of existing structures regulated by the Department of Health Care Access and Information/Office of Statewide Hospital Planning and Development, which include hospitals and correctional treatment centers (applications listed in Sections 1.10.1 (OSHPD 1).
Chapter 4 Repairs.
Chapter 4, a chapter independent of the three compliance methods, governs the repair of existing buildings. The provisions define conditions under which repairs may be made using materials and methods like those of the original construction or the extent to which repairs must comply with requirements for new buildings.
Chapter 4A Repairs.
Chapter 4A governs the repair of existing buildings regulated by the Department of Health Care Access and Information/Office of State- wide Hospital Planning and Development, which include hospitals and correctional treatment centers (applications listed in Sections 1.10.1 (OSHPD 1).
Chapter 5 Prescriptive Compliance Method.
Chapter 5 provides one of the three main options of compliance available in the CEBC for buildings and structures undergoing alteration, addition or change of occupancy. The base requirements are more administrative in nature. The structural triggers for upgrades are consistent with the Work Area Method.
Chapter 5A Prescriptive Compliance Method.
Chapter 5A provides details for the prescriptive compliance method for alteration, addition and change of occupancy of existing build- ings and structures regulated by the Department of Health Care Access and Information/Office of Statewide Hospital Planning and Development, which include hospitals and correctional treatment centers (applications listed in Sections 1.10.1 (OSHPD 1).
Chapter 6 Classification of Work.
Chapter 6 provides an overview of the Work Area Method and defines the different classifications of work including alterations, change of occupancy, additions and historic buildings. Detailed requirements for all of these are given in subsequent Chapters 7 through 11.
Chapter 7 Alterations—Level 1.
Chapter 7 provides the technical requirements for those existing buildings that undergo Level 1 alterations as described in Section 602, which includes replacement or covering of existing materials, elements, equipment or fixtures using new materials for the same purpose. This chapter is distinguished from Chapters 8 and 9 by only involving replacement of building components with new components with no reconfiguration of space.
Chapter 8 Alterations—Level 2.
A Level 2 alteration is an alteration involving space reconfiguration that could be up to and including 50 percent of the area of the building or addition of a new building system. Level 2 alterations also include the extension or addition of any system or equipment. The purpose of Chapter 8 is to provide detailed requirements and provisions to identify the required improvements in the existing building elements, means of egress, fire protection, structural systems, energy efficiency, and other building systems include electrical, mechanical and plumbing when a building is being altered.
Chapter 9 Alterations—Level 3.
CEBC § 1224.3 Medium relevance — show source text
1224.3 Definitions. Specific terms and definitions are provided to facilitate consistency in the interpretation and application of these requirements. Some of these terms may have a broader definition in other contexts, but the definitions provided here reflect the use of the terms for OSHPD requirements.
AIR CONDITIONING. The process or system by which simultaneously the temperature, humidity, air motion and quality are maintained within required limits.
AIRBORNE INFECTION ISOLATION ROOM. A single-occupancy patient room where environmental factors are controlled in an effort to minimize the transmission of those infectious agents usually spread from person to person by droplet nuclei associated with coughing and inhalation.
AMBULATORY CARE. A defined health care encounter(s) of less than 24 hours in duration that requires direct professional health care support within a specific facility.
AMBULATORY SURGICAL FACILITY. Any surgical facility organized for the purpose of providing procedural, invasive surgical care to patients with the expectation that they will be recovered sufficiently to be discharged in less than a 24-hour period.
ANGIOGRAPHY. The radiographic visualization of blood vessels following introduction of contrast material for purposes of diagnosis.
BASIC SERVICES. Those essential services required for licensure as a hospital, including medical, nursing, surgical, anesthesia, labora- tory, radiology, pharmacy, dietary services and support services. See “SUPPLEMENTAL SERVICES.”
BIOTERRORISM. The use or threat of use, of biological agents to intimidate a political entity or population group.
CENTRAL AIR-HANDLING SYSTEMS. Any units requiring ductwork on the supply or inlet side and serving more than one room.
CHANGE IN FUNCTION. A change in function is a change in activity, service or licensed service provided, within the project limits, that does not necessarily change the use, specific use and/or occupancy. Conversion of a space that results in a change in activity such that the space will be required to satisfy the functional requirements under a different code sub-section than that of the prior use is consid- ered a change in function.
CLEAR DIMENSION. An unobstructed room dimension exclusive of built-in casework and equipment and available for functional use.
COURT. An open exterior space bounded on three or more sides by the walls of a structure.
ENVIRONMENT OF CARE. Those features in a built health care entity that are created, structured and maintained to support quality health care.
EXAM ROOM. A room with a bed, stretcher or examination table and capability for periodic monitoring (e.g., measurement of blood pres- sure or pulse oximetry) in which procedures that do not require a specialized suite can be performed (e.g., pelvic examination, blood transfusion).
FLOOR AREA, CLEAR. The actual occupied area exclusive of fixed or wall-mounted cabinets, fixed beds and furnishings, built-in shelves, toilet rooms, closets, lockers, wardrobes, alcoves, anterooms or vestibules.
GENERAL ACUTE-CARE HOSPITAL. A hospital, licensed by the California Department of Public Health, having a duly constituted govern- ing body with overall administrative and professional responsibility and an organized medical staff which provides 24-hour inpatient care, including the basic services.
CEBC § 1-2 Medium relevance — show source text
CHAPTER TOPICS Col2 CHAPTER SUBJECT 1-2 Administration and Definitions 3-4 Wildland-Urban Interface Area Designation and Requirements 5 Building Construction Regulations 6 Fire Protection Requirements 7 Referenced Standards Appendices A-I Adoptable and Informational Appendices Chapter 1 Scope and Administration.
Chapter 1 establishes the limits of applicability of the code and describes how the code is to be applied and enforced. The provisions of Chapter 1 establish the authority and duties of the code official appointed by the authority having jurisdiction and also establish the rights and privileges of the design professional, contractor and property owner.
Chapter 2 Definitions.
Chapter 2 is the repository of the definitions of terms used in the body of the code. The user of the code should be familiar with and consult this chapter because the definitions are essential to the correct interpretation of the code and because the user may not be aware that a term is defined.
Chapter 3 Wildland-Urban Interface Areas.
Chapter 3 provides for the fundamental aspect of applying the code—the legal declaration and establishment of wildland-urban interface areas within the adopting jurisdiction, mapping of the area, periodic review and updates.
Chapter 4 Wildland-Urban Interface Area Requirements.
The requirements of Chapter 4 apply to all occupancies in the wildland-urban interface and pertain to all of the following:
Fire service access to the property that is to be protected, including fire apparatus access roads and off-road driveways.
Premises identification.
Key boxes to provide ready access to properties secured by gated roadways or other impediments to rapid fire service access.
Fire protection water supplies, including adequate water sources, pumper apparatus drafting sites, fire hydrant systems and system reliability.
Fire department access to equipment such as fire suppression equipment and fire hydrants.
Chapter 5 Special Building Construction Regulations.
The regulations in Chapter 5 establish minimum standards for the location, design and construction of buildings and structures based on construction within a Fire Hazard Severity Zone or a Wildland-Urban Interface (WUI) Area.
The construction provisions of Chapter 5 are intended to supplement the requirements of the California Building Code and Califor- nia Residential Code and address mitigation of the unique hazards posed to buildings by wildfire and to reduce the hazards of building fires spreading to wildland fuels. This is accomplished by requiring ignition-resistant construction materials.
Chapter 6 Fire Protection Requirements.
Chapter 6 contains additional requirements for development and construction in Local Responsibility Areas (LRA) designated as Very High Fire Hazard Severity Zones and areas designated by the State Fire Marshal as State Responsibility Areas (SRA). While many of these provisions are found in Title 14 and Title 19 of the California Code of Regulations, they are replicated here for the code user. The local jurisdiction has the authority to apply the same regulations to LRA when the regulations are adopted by local ordinance.
The requirements in this chapter reference the process for adoption of Very High Fire Hazard Severity Zones in the LRA; criteria for evaluating existing subdivisions that are at significant fire risk and are without an adequate secondary egress; and criteria for fire safety provisions required in the Safety Element of a city or county General Plan.
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CEBC § 1.11. Medium relevance — show source text
REPAIR|||X|||||||||||||||||||||| |ROOF REPLACEMENT|||X|||||||||||||||||||||| |SPC SEISMIC SEPARATION||||||||||X|X|||||||||||||| |SUBSTANDARD BUILDING||||X|X|||||||||||||||||||| |SUBSTANTIAL STRUCTURAL
DAMAGE||||||||||X|X|||||||||||||| |UNREINFORCED CONCRETE||||||||||X|X|X||X|X|||||||||| |UNREINFORCED MASONRY||||||||||X|X|X||X|X|||||||||| |UNSAFE|||X|X|X|||||||||||||||||||| |VOLUNTARY STRUCTURAL
IMPROVEMENTS||||||||||X|X|X||X|X|||||||||| |WORK AREA|||X||||||||||||||||||||||The state agency does not adopt sections identified with the following symbol: The Office of the State Fire Marshal’s adoption of this chapter or individual sections is applicable to structures regulated by other state agencies pursuant to Section 1.11.
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2 DEFINITIONS
User notes:
About this chapter: Codes, by their very nature, are technical documents. Every word, term and punctuation mark can add to or change the meaning of a technical requirement. It is necessary to maintain a consensus on the specific meaning of each term contained in the code. Chapter 2 performs this function by stating clearly what specific terms mean for the purpose of the code.
SECTION 201—GENERAL
201.1 Scope. Unless otherwise expressly stated, the following words and terms shall, for the purposes of this code, have the meanings shown in this chapter.
201.2 Interchangeability. Words used in the present tense include the future; words stated in the masculine gender include the feminine and neuter; the singular number includes the plural and the plural, the singular.
201.3 Terms defined in other codes. Where terms are not defined in this code and are defined in the other California Codes, such terms shall have the meanings ascribed to them in those codes. [OSHPD 1, 1R, 2, 4 & 5] For terms not defined in this chapter, refer to Chapters 6 and 7 of the California Administrative Code, and Chapter 2 of the California Building Code. [DSA-SS & DSA-SS/CC] Definitions of terms given in Section 4-207 or 4-314 of the California Administrative Code govern over those in Section 202.
201.4 Terms not defined. Where terms are not defined through the methods authorized by this chapter, such terms shall have ordinarily accepted meanings such as the context implies.
SECTION 202—GENERAL DEFINITIONS
ACCESSORY DWELLING UNIT. [HCD 1 & HCD 2] An attached or detached residential dwelling unit that provides complete independent living facilities for one or more persons and is located on a lot with a proposed or existing primary residence. Accessory dwelling units shall include permanent provisions for living, sleeping, eating, cooking and sanitation on the same parcel as the single-family or multi- family dwelling is or will be situated. (See Government Code Section 65852.2.)
CEBC § 2.1 Medium relevance — show source text
The IBC requirements for hazardous materials, fire-resistance-rated construction, interior finish, fire protection systems, means of egress, emergency and standby power, and temporary structures are directly correlated with the requirements of the International Fire Code ® (IFC®). The following table shows chapters/sections of the IBC that are correlated with the IFC:
IBC/IFC CORRELATED TOPICS Col2 Col3 IBC CHAPTER/SECTION IFC CHAPTER/SECTION SUBJECT Sections 307, 414, 415 Chapters 50–67 Hazardous materials and Group H requirements Chapter 7 Chapter 7 Fire-resistance-rated construction (fire and smoke protection features in the IFC) Chapter 8 Chapter 8 Interior finish, decorative materials and furnishings Chapter 9 Chapter 9 Fire protection systems Chapter 10 Chapter 10 Means of egress Chapter 27 Section 604 Standby and emergency power Section 3103 Chapter 31 Temporary structures Chapter 1 Scope and Administration.
Chapter 1 establishes the limits of applicability of the code and describes how the code is to be applied and enforced. The provisions of Chapter 1 establish the authority and duties of the code official appointed by the authority having jurisdiction and also establish the rights and privileges of the design professional, contractor and property owner.
Chapter 2 Definitions.
Chapter 2 is the repository of the definitions of terms used in the body of the code. The user of the code should be familiar with and consult this chapter because the definitions are essential to the correct interpretation of the code and because the user may not be aware that a term is defined.
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Chapter 3 Occupancy Classification and Use.
Chapter 3 provides for the classification of buildings, structures and parts thereof based on the purpose for which they are used. Section 302 identifies the groups into which all buildings, structures and parts thereof must be classified. Sections 303 through 312 identify the occupancy characteristics of each group classification. In some sections, specific group classifications having requirements in common are collectively organized such that one term applies to all. For example, Groups A-1, A-2, A-3, A-4 and A-5 are individual groups for assembly-type buildings. The general term “Group A,” however, includes each of these individual groups. Other groups include Business (B), Organized Camps (C), Educational (E), Factory (F-1, F-2), High Hazard (H-1, H-2, H-3, H-4, H-5), Institutional (I-2, I-3, I-4), Laboratories (L), Mercantile (M), Residential (R-1, R-2, R-2.1, R-2.2, R-3, R-3.1, R-4), Storage (S-1, S-2) and Utility (U). In some occupancies, the smaller number means a higher hazard, but that is not always the case.
Frequently asked questions
When must I look outside §202 for a term’s definition?
If §201.3 names another California code or an agency administrative chapter for that term, the external definition controls. Always check §201.3 before relying solely on §202.
If a term isn’t in §202, can I use a dictionary?
Yes — §201.4 directs you to use ordinarily accepted meanings “as the context implies” when not defined by CEBC or referenced codes. But expect different jurisdictions or plan checkers to interpret ordinary meaning differently.
Does “approved” always mean the same thing?
No — APPROVED in §202 normally means “acceptable to the code official,” but the code notes exceptions where enforcing agencies (statutory or administrative) have different approval language; check related notes in §202.
If I add a small roof deck, is that an addition?
Under §202 an ADDITION includes an increase in floor area, number of stories, or height. A roof deck that increases usable floor area or changes height could be an addition; quantify the increase and document it.
Which definition causes the most disputes?
Terms that reference other statutes or agency rules (like ACCESSORY DWELLING UNIT) and the borderline between ALTERATION and ADDITION are the most frequent causes of differing interpretations because they change the compliance path and triggers.
More in California Existing Building Code
- Administration and Definitions (Scope, enforcement, code official duties, definitions)
- Provisions for All Compliance Methods (general requirements that apply to all compliance options; Chapter 3 / 3A)
- Seismic retrofit and evaluation (Appendix A and seismic provisions/sections for evaluation and retrofit)
- Referenced Standards and Appendices (Chapter 16 and Appendices A–E, Resource A)
- Repairs (Chapter 4 — repair-specific rules for materials, means of egress, structural, MEP, etc.)
- Alterations — Level 1, Level 2, Level 3 (technical requirements for each alteration level; Chapters 7–9)
- Change of Occupancy and Additions (requirements for occupancy changes and additions; Chapters 10–11)
- Compliance Methods — Prescriptive, Work Area, Performance (Chapters 5, 6–11, 13)
- Relocated Buildings (requirements for buildings moved or relocated; Chapter 14)
- Construction Safeguards (site safety, means of egress and life-safety during construction; Chapter 15)
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California Existing Building Code