Local zoning · Anderson

Anderson — Nonconforming Uses

Q: What happens if a nonconforming business in Anderson closes for a year?

If the nonconforming use ceases for a continuous period of one year , it is considered abandoned and any later use must conform to the current zoning. The Planning Commission may grant a temporary use permit under narrow findings; see § 17.56.050 .

Q: Can I extend a nonconforming use from part of a building to the whole building?

Yes — but only if you first obtain a use permit . Extension of a portion‑of‑building nonconforming use to the rest of the building requires a use permit under § 17.56.030 .

Q: If my nonconforming building is 60% damaged in a fire, can I rebuild it as it was?

If damage exceeds 50% of the appraised value , the building may only be restored if it is made to conform to current district regulations; restoration to the former total floor area may be allowed only with a use permit ( § 17.56.060 ) . Verify appraised value method with Planning.

Q: What is a “nonconforming building” under Anderson’s code?

A nonconforming building is one that lawfully existed when the zoning ordinance was adopted but was designed, erected, or structurally altered for a use that does not conform to the district's current use rules. See § 17.04.590 .

Q: Do downtown MU‑C adaptive‑reuse rules change nonconforming treatment?

Yes — MU‑C contains adaptive reuse exemptions (for small lots/structures) that relieve some build‑to requirements and allow certain repairs up to 50% of appraised value without requiring full compliance; remodels/expansions still typically go through design review ( § 17.15.060 ) .

Q: Where can I find the list of zoning districts (R‑1, MU‑C, etc.) in the code?

The zoning district list is in § 17.02.040 (the Title 17 district table) which names R‑1, R‑2, R‑E‑1/R‑E‑2, MU‑C, MU‑R, AG, C‑1, C‑2, C‑3, M‑1, M‑2, P‑SP, etc. .

Nonconforming Uses under the Anderson local zoning and planning code, with the controlling citations.

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Last reviewed: July 3, 2026

Overview

This page explains how the City of Anderson treats nonconforming uses, nonconforming buildings, and related repair, change, and abandonment rules under the city's zoning ordinance (Title 17). The controlling rules are in Chapter 17.56 (Nonconforming Uses) and the code's definitions (e.g., § 17.04.590). Where a district has special rules affecting nonconformities (for example, downtown MU‑C adaptive‑reuse provisions), those are called out with the exact code citations. For related topics see the city's pages on Zoning, Land Use, Development Standards, Parking, Design Review, Overlay Districts, ADUs, and California Building Standards Code for immediate navigation.

Note: this page stays strictly within what Anderson's Title 17 actually says about nonconforming uses. Where Title 17 is silent, the text says "Not found in retrieved materials" or directs you to verify with the jurisdiction.

What the code says, in plain terms (core rules)

The lawful nonconforming use of land in existence when this Title was adopted may be continued but may not be enlarged or extended beyond the area it occupied at adoption (§ 17.56.010) .
The lawful nonconforming use of buildings existing at adoption may be continued (§ 17.56.020) .
Extending a nonconforming use from a portion of a building to the whole building requires a use permit (§ 17.56.030) .
Changing a nonconforming building’s use to one that is the same or more restricted also requires a use permit (§ 17.56.040) .
If a nonconforming use stops for a continuous period of one year, it is considered abandoned and any later use must conform to the current zone (§ 17.56.050) . The Planning Commission can grant a temporary use permit (up to 24 months, renewable) under narrow findings (see § 17.56.050(B)) .
A nonconforming building destroyed or damaged more than 50% of appraised value may only be restored if brought into conformance, except restoration to prior total floor area may be allowed with a use permit (§ 17.56.060) .
Ordinary maintenance and non‑structural repairs are allowed; structural alterations or repairs exceeding 15% of appraised value in any one year require a use permit (§ 17.56.070) .
A “nonconforming building” is defined in the code: a lawfully existing structure at the time the ordinance was adopted that was designed/used in a manner that does not conform to the district's use rules (§ 17.04.590) .

District‑by‑district breakdown (what Title 17 says and how nonconforming rules apply)

The zoning districts listed in Anderson's Title 17 are set out in § 17.02.040; the citywide nonconforming rules of Chapter 17.56 apply across districts unless a district chapter says otherwise . Below each district name is (A) the code‑stated purpose or designation, (B) typical permitted uses where the city text provides them, (C) key dimensional or special standards that the code records for that district (if available in the retrieved materials), and (D) how the city’s nonconforming rules apply there (what Title 17 actually says).

Note: where a district chapter or table is not present in the retrieved excerpts, that absence is noted as "Not found in retrieved materials." Verify parcel‑specific questions with the Planning Department.

R-1 (Low density residential)

Purpose / designation: R‑1 is the city's Low density residential district (listed in § 17.02.040) .
Typical permitted uses: Not found in retrieved materials for the R‑1 chapter in the supplied excerpts. Verify with the jurisdiction.
Key dimensional standards: Not found in retrieved materials for R‑1 in supplied excerpts. Verify with the jurisdiction.
Nonconforming rules: Citywide Chapter 17.56 applies (continuation, abandonment after 1 year, repair limits, damage/restore 50% rule) — see § 17.56.010–070 for the exact rules and § 17.04.590 for the definition of nonconforming building .

R-2 (Medium density residential)

Purpose / designation: R‑2 is Medium density residential (see § 17.02.040) .
Typical permitted uses: The code cross‑references accessory and home occupation rules (see Chapter 17.60 for accessory/second‑unit rules referenced in district chapters) — see § 17.10.100 and § 17.60.020 in the code excerpts .
Dimensional standards: Not found in retrieved materials for R‑2 details in the excerpts. Verify with the jurisdiction.
Nonconforming rules: Chapter 17.56 applies; see § 17.56.010–070 .

R-E-1, R-E-2 (High density residential / Residential estate)

Purpose / designation: R‑E‑1 and R‑E‑2 appear in the district list (§ 17.02.040) as high‑density residential variants; specific chapter text not in retrieved materials .
Typical uses / standards: Not found in retrieved materials. Verify with the jurisdiction.
Nonconforming rules: Chapter 17.56 applies; see § 17.56.010–070 .

MU‑C, MU‑R (Mixed Use — Commercial / Residential)

Purpose / designation: MU‑C and MU‑R are Anderson’s downtown mixed‑use districts listed in § 17.02.040; the MU chapters include mandatory design/development standards to shape downtown form .
Typical permitted uses: The MU chapters include both residential and commercial uses; prohibited lists also exist in the MU chapter (see the downtown development standards and prohibited uses in the retrieved MU excerpts) .
Key dimensional / special standards: Downtown MU uses specific height, build‑to, and setback rules (see the Downtown tables and Table 17‑3 / Table 17‑4 in the MU chapter excerpts) — see the development standards in § 17.15.060 and the Downtown tables in the MU chapter excerpts .
Nonconforming rules (special): Adaptive reuse exemptions for small nonconforming houses/structures in MU‑C allow relief from build‑to and allow maintenance/repairs up to 50% of appraised value without triggering full conformance; remodels and expansions are subject to design review (§ 17.15.060(A)(2–3)) . Citywide Chapter 17.56 also applies for abandonment, extension, and restoration rules (§ 17.56.010–070) .

AG (Agriculture)

Purpose / designation: AG is listed as the Agriculture district (§ 17.02.040) .
Typical uses / standards: Not found in retrieved materials for AG specifics in the excerpts. Verify with the jurisdiction.
Nonconforming rules: Chapter 17.56 applies; see § 17.56.010–070 .

C‑1, C‑2, C‑3 (Commercial: General, Highway, Heavy)

Purpose / designation: C‑1, C‑2, C‑3 appear in the district list (§ 17.02.040) .
Typical permitted uses: The code gives a representative permitted‑use list for a commercial chapter that includes banks, cafes, offices, hotels, restaurants, auto parts stores and accessory uses and lists uses permitted subject to a use permit and building site requirements (see § 17.20.030, § 17.20.040, § 17.20.050, and § 17.20.060 in the commercial chapter excerpts) .
Dimensional standards (selected): Minimum main building lot area: 2,000 sq ft; maximum height: 50 ft (with use permit up to 65 ft) and front/side yard exceptions are spelled out in the commercial chapter (§ 17.20.040–050–060) .
Nonconforming rules: Chapter 17.56 applies. For nonconforming commercial building changes or extensions, a use permit is required for extension/change under § 17.56.030–040; abandoned uses follow § 17.56.050; disaster/damage restoration follows § 17.56.060 .

M‑1, M‑2 (Industrial — Light / Heavy)

Purpose / designation: M‑1 and M‑2 are industrial districts listed in § 17.02.040 .
Typical uses / standards: Some industrial uses and prohibitions are referenced in the commercial/MU chapters (e.g., uses with hazardous materials), but specific M‑zone chapters were not in the retrieved excerpts. Verify with the jurisdiction.
Nonconforming rules: Chapter 17.56 applies; see § 17.56.010–070 .

P‑SP, N‑R, P‑D, VPD, A‑SP, A (combining), H‑S, F‑1/F‑2, U

Purpose / designation: These appear as special purpose, natural resource, planned development, vineyard planned development, airport specific plan, combining districts (animal keeping, hillside slopes), foodway combining districts, and unclassified (§ 17.02.040) .
Typical uses / standards: Specific text for many of these special districts is Not found in retrieved materials in the supplied excerpts. For airport overlays there are special nonconforming/height rules (see § 17.36.060 on nonconforming structures/trees as to airport hazards) .
Nonconforming rules: Absent district‑specific exceptions, Chapter 17.56 controls; airport overlay has its own nonconforming provision in § 17.36.060 (regulations not retroactive; marking and lighting requirements) .

Quick reference table — most decision‑relevant nonconforming rules

What to know	Summary	Code reference
Continue existing nonconforming land use	May continue but may not be enlarged or extended beyond the area occupied at adoption	§ 17.56.010
Continue existing nonconforming building use	Lawful building uses existing at adoption may continue	§ 17.56.020
Extend nonconforming use in building	Requires a use permit to extend use from part to whole of building	§ 17.56.030
Change nonconforming use to same/less intensive	Allowed with use permit	§ 17.56.040
Abandonment	Continuous cessation 1 year = abandonment; reuse must conform unless special use permit findings	§ 17.56.050
Damage / restoration	Damage > 50% of appraised value must conform; limited restoration may be allowed with a use permit	§ 17.56.060
Maintenance / repair threshold	Ordinary maintenance allowed; structural changes exceeding 15% of appraised value in any one year require a use permit	§ 17.56.070
Definition — nonconforming building	Lawful building at time of adoption that does not conform to current district use rules	§ 17.04.590

Checklist — what an applicant must satisfy when dealing with a nonconforming use or building

Establish that the use or building was lawfully in existence at the adoption of the Title (document chain of title, prior permits, dated photographs) — see § 17.56.010–020 .
If you propose to extend the nonconforming use within a building, prepare a use permit application and findings per § 17.56.030 .
If you propose to change to a use of the same or more restricted nature, prepare a use permit per § 17.56.040 .
Demonstrate continued continuous operation to avoid the 1‑year abandonment trigger; if operations ceased, be prepared to show how Planning Commission findings for an exception apply (if seeking a temporary allowance) § 17.56.050(B) .
For repair/restoration after damage, determine appraised value and whether damage exceeds 50%; if so, either bring the building into conformance or secure a use permit under § 17.56.060 .
For maintenance/alterations, calculate whether proposed work exceeds 15% of appraised value for the year; if it does, expect to seek a use permit (§ 17.56.070) .
If the property is in MU‑C/MU‑R and you propose changes or reuse, check design review requirements and the adaptive reuse exemptions in § 17.15.060 (design review links) .
Check related standards early: parking rules, signage rules, and development standards can affect allowable operations; see the city's Parking and Development Standards pages for context.

Risks & Ambiguities

Issue	Why it matters	What to verify
When exactly is a nonconforming use "abandoned"?	The code uses a 1‑year continuous cessation standard; enforcement depends on evidence of activity (rent rolls, utility bills, business licenses). Mis‑timing can eliminate the nonconforming right (§ 17.56.050) .	Confirm continuous operation documentation and ask the Planning Department for any local interpretation guidance.
Appraised value triggers (15% repair, 50% damage)	The appraised value basis controls whether repairs/restoration are allowed or require conformance/use permit (§ 17.56.060–070) .	Verify which assessor's value or appraisal method the city accepts (assessor records vs. independent appraisal) and whether escalation/appeal is allowed.
Extending nonconforming uses in buildings	Extension requires a use permit; criteria and required findings are discretionary and may include neighborhood impacts (§ 17.56.030) .	Confirm the use permit application requirements and likely discretionary findings with Planning.
Interaction with MU‑C adaptive‑reuse exemptions	MU‑C allows certain flexibility for small nonconforming structures (exceptions to build‑to and repair limits) — these carveouts can materially change the feasibility of a project (§ 17.15.060(A)(2)) .	Confirm applicability (lot size threshold, appraisal limits) with the Planning Director and design review staff.
ADUs and nonconforming zoning	State ADU law restricts local denial based solely on nonconforming zoning conditions in many cases, which may override local practice (state law summarized in the uploaded ADU handbook) — not fully addressed in Title 17 excerpts here.	Verify with the Planning Department whether Anderson applies state ADU rules locally and how Title 17 Chapter 17.60 interacts with state ADU rules. State guidance: 2025 California ADU handbook (uploaded) .
Parcel‑specific overlay standards	Overlays (airport, hillside, foodway, etc.) can impose additional nonconforming rules (e.g., airport marking/lighting § 17.36.060) and may supersede or supplement Chapter 17.56.	Confirm applicable overlays on the parcel and applicable overlay sections (see § 17.36.060 for airport) .

Plain‑English summary

If your building or use in Anderson predates the current zoning map, you generally can keep it — but you cannot expand it, and if it sits idle for a year the city treats it as abandoned and you must conform to current rules. Small repairs are allowed, but big rebuilds or restorations above the code’s stated appraised‑value thresholds trigger the requirement to comply with current zoning or to obtain a use permit. The exact triggers and documentation (appraised value, continuous operation) are spelled out in Chapter 17.56 and the code's definitions; verify details with the Planning Department for parcel‑specific interpretation (§ 17.56.010–070, § 17.04.590) .

Source References

Anderson Municipal Code, Title 17 — ZONING, Chapter 17.56 (Nonconforming Uses): § 17.56.010–070 (existing land uses, building uses, extension, change of use, abandonment, restoration, maintenance) .
Anderson Municipal Code, Definitions: § 17.04.590 (definition of nonconforming building) .
Anderson Municipal Code, Mixed‑Use / Downtown Development Standards (adaptive reuse & design review): § 17.15.060 (development standards; adaptive reuse exemptions) .
Anderson Municipal Code, Commercial district (uses / yards / heights): e.g., § 17.20.030–060 (permitted uses, building site requirements, height, yards) .
Anderson Municipal Code, Airport overlay / nonconforming structures: § 17.36.060 (regulations not retroactive; marking/lighting) .
Anderson Municipal Code, Zoning districts list: § 17.02.040 (district names — R‑1, R‑2, R‑3, MU‑C, MU‑R, AG, C‑1, C‑2, C‑3, M‑1, M‑2, P‑SP, N‑R, P‑D, VPD, A‑SP, combining districts, etc.) .
2025 California ADU handbook (uploaded) — state guidance on ADUs and nonconforming zoning (summary of state law that limits refusing ADU permits because of nonconforming zoning) — uploaded resource, not a Title 17 provision; verify local application with Anderson Planning .
Anderson code print export (Title 17) source: Anderson, California — Title 17 - ZONING (print export) — municipal code base used for the excerpts above .

Sources

Retrieved passages

Anderson Zoning Code (§ 1) High relevance
Anderson Zoning Code (§ 1) High relevance
CFC § 1 (§ 1) Medium relevance
Anderson Zoning Code (Chapter 17.46) Medium relevance
Anderson Zoning Code (chapter shall) Medium relevance
Anderson Zoning Code Medium relevance
Anderson Zoning Code (Section 17.15.050) Medium relevance
Anderson Zoning Code (Chapter 17.02) Medium relevance

Cited sections

Official Anderson code library

Frequently asked questions

What happens if a nonconforming business in Anderson closes for a year?

If the nonconforming use ceases for a continuous period of one year, it is considered abandoned and any later use must conform to the current zoning. The Planning Commission may grant a temporary use permit under narrow findings; see § 17.56.050 .

Can I extend a nonconforming use from part of a building to the whole building?

Yes — but only if you first obtain a use permit. Extension of a portion‑of‑building nonconforming use to the rest of the building requires a use permit under § 17.56.030 .

If my nonconforming building is 60% damaged in a fire, can I rebuild it as it was?

If damage exceeds 50% of the appraised value, the building may only be restored if it is made to conform to current district regulations; restoration to the former total floor area may be allowed only with a use permit (§ 17.56.060) . Verify appraised value method with Planning.

Are routine repairs allowed on a nonconforming building?

Ordinary maintenance and repairs are allowed provided they are non‑structural; structural repairs or alterations that exceed 15% of appraised value in one year require a use permit (§ 17.56.070) .

What is a “nonconforming building” under Anderson’s code?

A nonconforming building is one that lawfully existed when the zoning ordinance was adopted but was designed, erected, or structurally altered for a use that does not conform to the district's current use rules. See § 17.04.590 .

Do downtown MU‑C adaptive‑reuse rules change nonconforming treatment?

Yes — MU‑C contains adaptive reuse exemptions (for small lots/structures) that relieve some build‑to requirements and allow certain repairs up to 50% of appraised value without requiring full compliance; remodels/expansions still typically go through design review (§ 17.15.060) .

Can the City force me to correct a nonconforming zoning condition before they approve an ADU?

Anderson’s Title 17 excerpts do not directly address how the city applies state ADU rules. State ADU guidance (uploaded 2025 ADU handbook) limits the ability of local agencies to deny ADU permits solely because of nonconforming zoning conditions in many cases; confirm local implementation with Anderson Planning and review Chapter 17.60 for local ADU provisions (verify interplay with state law) — state guidance: uploaded ADU handbook (see summary) .

Is there a different rule for nonconforming structures near the airport?

Yes — the airport overlay has a nonconforming provision that the regulations are not retroactive to require removal/alteration of structures/trees existing at the effective date, but owners may be required to allow marking/lighting for aviation safety (§ 17.36.060) .

Where can I find the list of zoning districts (R‑1, MU‑C, etc.) in the code?

The zoning district list is in § 17.02.040 (the Title 17 district table) which names R‑1, R‑2, R‑E‑1/R‑E‑2, MU‑C, MU‑R, AG, C‑1, C‑2, C‑3, M‑1, M‑2, P‑SP, etc. .

If I want to change a nonconforming commercial use to a less intensive commercial use, do I need a permit?

Changing a nonconforming building’s use to a use of the same or more restricted nature requires a use permit under § 17.56.040 — check the specific permitted uses in the district chapter and prepare a use permit application accordingly . ---

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