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Fairfield · Building on your lot

Building on your lot in Fairfield

Fairfield sets its own limits on fences, accessory structures and home businesses. Fence height depends on the distance from the front property line and the zone, and accessory limits depend on size.

Key points

  • Fence height: Fairfield limits fences at single-family homes and duplexes to 42 inches within 15 feet of the front property line and 7 feet beyond.
  • Accessory structures: At single-family homes and duplexes, Fairfield limits small accessory structures (60 square feet or less) to 7 feet and large ones to 16 feet.
  • Home businesses: Fairfield keeps home businesses inside the home, with resident workers only and up to 8 patron visits a day.

Each rule below is marked Fairfield code or CA state law and links to the section it comes from (checked October 2026). General information, not legal advice.

Fences and walls

Fairfield code What Fairfield's code adds
Corner visibility
  • No fence, wall, hedge or other obstruction over 24 inches in the corner visibility triangle.
    Applies: Corner parcels; triangle of the curb lines and a line joining points 30 feet from their intersection, where traffic visibility would be blocked.
    § 25.30.2 · code text
    No fence, wall, hedge, or other visual obstruction over 24 inches in height shall be constructed where traffic visibility will be impeded, i.e., in that portion of a street corner that is located within the triangle formed by the intersecting curb lines and a line connecting the points drawn 30 feet away from their point of intersection on the lines
Height anywhere on the lot
  • No higher than 3 1/2 feet; open or solid decorative fences, walls or hedges only.
    Applies: Heart of Fairfield Plan Area (HD, HDC, HWT, HO, HR and HTD zones).
    § 25.30.2 · code text
    Fences in the Heart of Fairfield Plan Area (HD, HDC, HWT, HO, HR, and HTD zoning districts) shall be limited to open or solid decorative fences, walls, or hedges and shall not exceed a maximum height of 3 1/2 feet.
  • No higher than 8 feet.
    Applies: Noise or privacy fences and walls where a parcel abuts a public park, railroad or restricted access roadway.
    § 25.30.2 · code text
    For those portions of a parcel that abut a public park (existing or planned), a railroad, or any restricted access roadway (freeway, expressway, parkway, etc.), the maximum fence or wall height permitted shall be eight feet.
  • Fences up to 7 feet high are allowed.
    Applies: Undeveloped parcels, except in the OSC zone.
    § 25.30.2 · code text
    Any fence up to seven feet in height shall be permitted on undeveloped parcels, except in the OSC zone.
  • Up to 6 feet high.
    Applies: Multifamily property or church; a solid decorative fence or hedge at the required building setback line.
    § 25.30.2 · code text
    Any solid decorative fence or hedge may be installed to a maximum height of six feet at the required building setback line.
Front yard height
  • No higher than 42 inches.
    Applies: Fences, walls or hedges within 15 feet of the front property line of a single-family home, duet or duplex.
    § 25.30.2 · code text
    Fences, walls, or hedges on a property with a single-family home, duet, or duplex shall be limited to a height of 42 inches within 15 feet of the front property line
Side and rear yard height
  • No higher than 42 inches.
    Applies: Street side yards; the corner visibility rule also applies.
    § 25.30.2 · code text
    Fences in street side yards shall be limited to 42 inches in height, subject to the requirements in subsection D. 1 above.
  • No higher than 7 feet.
    Applies: Single-family home, duet or duplex; more than 15 feet from the front property line.
    § 25.30.2 · code text
    and to seven feet in height beyond 15 feet from the front property line.
  • Up to 7 feet in a street side yard, under setback rules; otherwise 42 inches.
    Applies: Corner lots whose rear line abuts a neighbor's side line; fence at least 10 feet from the side line or curb, per neighbor's driveway.
    § 25.30.2 · code text
    However, fence heights may be raised to seven feet in street side yards subject to the following restrictions, which shall apply to street side yard fences on corner lots where the rear property line of the corner lot abuts the side property line of an adjacent parcel:
  • Up to 8 feet high.
    Applies: Behind the front setback between residential properties, only with written consent of all abutting property owners.
    § 25.30.2 · code text
    Any fence, wall, or hedge behind the front setback between two or more residential properties may be installed to a maximum height of eight feet provided that all property owners that abut the proposed higher fence provide written consent to the Department.
Permit
  • A permit is required.
    Applies: Hedges, fences, shrubs or similar structures in a watercourse or right of way.
    § 16.4.24 · code text
    No hedge, fence, shrub or similar structure shall be planted, erected or maintained in a watercourse or right of way without a permit.
  • An encroachment permit is required to build to the edge of the sidewalk.
    Applies: Open decorative fences on multifamily property.
    § 25.30.2 · code text
    The fence may be built to the edge of sidewalk with an encroachment permit issued by the Public Works Department.
  • Director approval is required.
    Applies: Razor or barbed wire not visible from public areas or rights-of-way. On developed parcels, it is banned where visible from neighbors or public areas.
    § 25.30.2 · code text
    Razor or barbed wire fences not visible from public areas or public rights-of-way shall require approval by the Director.

Sheds, garages and other accessory structures

Fairfield code What Fairfield's code adds
Maximum height
  • No more than 7 feet high.
    Applies: Small accessory structure (60 square feet of floor area or less) on a lot with a single-family home or duplex.
    § 25.20.4.1 · code text
    Maximum height | 7 feet | 16 feet | 35 feet | Note 1
  • No more than 16 feet high.
    Applies: Large accessory structure on a lot with a single-family home or duplex; up to 35 feet if it meets all room addition rules.
    § 25.20.4.1 · code text
    Maximum height | 7 feet | 16 feet | 35 feet | Note 1
  • Up to 35 feet high.
    Applies: Large accessory structures that meet all rules for a room addition.
    § 25.20.4.1 · code text
    Large accessory structures may be built up to 35 feet in height if the structure satisfies all regulations for a room addition.
Size or lot coverage
  • No more than 60 square feet of floor area.
    Applies: Small accessory structures.
    § 25.20.4.1 · code text
    Maximum size (floor area) | 60 sq. ft. | No limit | No limit
  • May cover no more than 20% of the rear yard.
    Applies: Large accessory structures.
    § 25.20.4.1 · code text
    Rear yard coverage | No limit | 20% | 20% | Notes 3 and 4
  • No more than 30% of the rear yard combined.
    Applies: Room additions and accessory structures together.
    § 25.20.4.1 · code text
    Room additions and accessory structures may cover up to 30 percent of a rear yard when combined.
Side and rear setback
  • 0 feet; no setback is required.
    Applies: Small accessory structures (60 square feet or less); from interior side and rear property lines.
    § 25.20.4.1 · code text
    From interior side property line - between dwelling and property line | 0 feet | Same as for existing home | Same as for existing home |
  • At least 3 feet.
    Applies: Large accessory structures; from an interior side property line that is not between the home and the property line.
    § 25.20.4.1 · code text
    From interior side property line - not between dwelling and property line | 0 feet | 3 feet | Same as for existing home |
  • At least 3 feet from the rear property line.
    Applies: Large accessory structures.
    § 25.20.4.1 · code text
    From rear property line | 0 feet | 3 feet | 15 feet | Note 5
  • No more than 3 feet of rear setback is required.
    Applies: Open patio covers that are open on at least 3 sides.
    § 25.20.4.1 · code text
    The required rear setback for open patio covers (open on at least three sides) shall not exceed 3 feet.

Running a business from home

Fairfield code What Fairfield's code adds
Space used
  • Must be run entirely inside the main home.
    § 25.20.4.5 · code text
    The home occupation shall be conducted entirely within the principal dwelling.
Customer visits
  • Up to 8 customer visits per day.
    Applies: Only between 7:00 AM and 7:00 PM.
    § 25.20.4.5 · code text
    Up to eight patron visits per day shall be permitted between the hours of 7:00 AM and 7:00 PM.
Employees
  • No employees. Only household residents may work in the business at the home.
    § 25.20.4.5 · code text
    No persons, other than residents of the household for which the permit has been issued, shall engage in the home occupation at the home.
Permit
  • A Home Occupation Permit, issued together with a Business License.
    § 25.20.4.5 · code text
    No person shall conduct a home occupation without a Home Occupation Permit (concurrent with a Business License, as required in Chapter 10b of the City Code).
Businesses not allowed
  • Use of equipment or machinery not customarily incidental to domestic use
    § 25.20.4.5 · code text
    Use of equipment or machinery that is not customarily incidental to domestic use (e.g., cement mixers, tractors, and paint booths).
  • Equipment, machinery, or processes creating offensive noise, smoke, glare, fumes, odor, or vibration
    § 25.20.4.5 · code text
    Equipment, machinery, or processes that create noise, smoke, glare, fumes, odor or vibration (e.g., assembly requiring power tools, carpentry) offensive to a reasonable person at the property line.
  • Activities or equipment or materials that change the fire safety or occupancy classification
    § 25.20.4.5 · code text
    Uses that involve activities or use of equipment or materials on more than an intermittent basis so as to change the fire safety or occupancy classification of the premises (e.g., welding).
  • Activities causing electromagnetic interference
    § 25.20.4.5 · code text
    Activities that cause electromagnetic (e.g. radio, television, etc.) interference to surrounding properties.
  • Use or storage of chemicals or processes not customarily associated with domestic use
    § 25.20.4.5 · code text
    Use or storage of chemicals or processes that are not customarily associated with domestic use.
  • Repair of motor vehicles
    § 25.20.4.5 · code text
    Repair of motor vehicles.
  • Escort services
    § 25.20.4.5 · code text
    Escort services, meaning a person who, for a fee, commission, hire, reward or profit, accompanies other persons to or about social affairs, entertainments or places of amusement or consorts with others about any place of public resort or within any private quarters.

RV and boat parking

Fairfield code What Fairfield's code adds
Parking on the street
  • No more than 72 hours.
    Applies: Applies to any vehicle, boat or RV on any public right-of-way.
    § 11.7.2 · code text
    It is unlawful for a person to park or leave standing any vehicle, boat, or recreational vehicle on any public right-of-way at any time for a period exceeding 72 hours.
  • Overnight for no more than 72 hours in a row, twice in any 7-day period.
    Applies: Applies to a homeowner's, tenant's or out-of-town visitor's boat or RV on the street next to the owner's home.
    § 11.7.2 · code text
    Any boat or recreational vehicle parked or left standing on any public street in the city so as to allow the use of a homeowner, tenant, or out-of-town visitor shall not prohibit the overnight parking on public streets immediately abutting the owner’s residence for no more than 72 consecutive hours twice during any seven-day period.

Solar panels and EV chargers

Fairfield code What Fairfield's code adds
EV charger permit
  • Fast nondiscretionary permit, issued when the station meets all code rules; apply in person, by mail or electronically.
    Applies: Applies to installing an electric vehicle charging station anywhere in the city.
    § 5.1.4.10 · code text
    Anyone seeking to install an electric vehicle charging station at any site within the city may apply to the building official for an expedited nondiscretionary building permit.
Solar height and setbacks
  • Must not exceed the maximum legal building height.
    Applies: Required to qualify as a small rooftop home solar system for fast review.
    § 5.1.4.9 · code text
    A solar panel or module array that does not exceed the maximum legal building height as defined by the authority having jurisdiction.
  • Allowed by Zoning Clearance in rear or side yards if accessory structure standards (Table 25-7) are met.
    Applies: Applies to ground-mounted solar in single-family residential zones.
    § 25.30.8 · code text
    In all single family residential zoning districts, ground-mounted support frames or structures for stand-alone solar energy systems may be approved through Zoning Clearance if located in rear or side yards and all standards for accessory structures in Table 25-7 are met.
Solar permit process
  • Fast permit once complete: same day over the counter, or 1 to 3 business days for electronic applications.
    Applies: Applies to small rooftop home solar systems; electronic filing is available.
    § 5.1.4.9 · code text
    Electronic submittal of the required permit application and documents by the Internet shall be made available to all small residential rooftop solar energy system permit applicants.
  • A building permit is required before installation.
    § 25.30.8 · code text
    The applicant shall submit for and receive approval of a building permit prior to installation of any solar energy system, as well as any other permits or approvals specified below.

Tree removal

Fairfield code What Fairfield's code adds
Permit to remove
  • Yes, a Tree Removal Permit is required.
    Applies: Applies to removing a protected tree outside a project reviewed by the Department, Commission or Council, and outside the Public Tree Conservation Policy.
    § 25.36.5 · code text
    Any person proposing to remove a protected tree not as part of a project subject to review by the Department, the Commission, or the Council, or where such removal is not subject to the Public Tree Conservation Policy referenced in Section 25.36.8 shall make application to the Director of Community Development for a Tree Removal Permit.
Protected trees
  • All trees on public property.
    § 25.36.3 · code text
    All trees on public property.
  • Trees on private property or in the public right of way that the City required as a project approval condition.
    Applies: Applies to trees required by the City as a condition of project approval.
    § 25.36.3 · code text
    Required by the City as a condition of approval for the project;
  • Trees on private property or in the public right of way shown on a City-approved project landscape plan.
    Applies: Applies to trees shown on a City-approved project landscape drawing or plan.
    § 25.36.3 · code text
    Shown on a landscape drawing or plan for a project approved by the City.
  • Native oaks, Bay Laurel, Madrone and Buckeye over 6 inches in caliper or diameter at breast height.
    Applies: Applies on undeveloped private properties.
    § 25.36.3 · code text
    The following species of trees located on undeveloped private properties which exceed 6 inches in caliper or diameter at breast height.
  • Trees with proven habitat, historic or cultural value, important beauty, rarity, or unusual size or age.
    Applies: As the city decides during project review or through special studies.
    § 25.36.3 · code text
    Demonstrated habitat value.
Replacement trees
  • Case by case; inch-for-inch replacement encouraged: a 24-inch box counts 3 inches, 15-gallon 1 inch, 5-gallon ½ inch.
    Applies: Applies to approved protected tree removals; trunk measured at breast height (4½ feet).
    § 25.36.9 · code text
    It is the policy of the City to encourage the replacement of protected trees on an inch-for-inch basis.
Penalty
  • Replace 3 inches for every inch removed, plus any extra mitigation the Community Development Director requires.
    Applies: Applies to trees removed in violation of the tree ordinance.
    § 25.36.9 · code text
    Parties who remove a tree in violation of this Ordinance shall be subjected to a mitigation requirement of 3 (three) inches for every inch removed.

Swimming pools

Fairfield code The gap from the ground to the bottom of the enclosure is at most 2 inches. Gaps must not let a sphere 4 inches or wider pass through.

All 13 Fairfield rules on swimming pools, with the code text and the state law underneath →

Pets, chickens and bees

Fairfield code What Fairfield's code adds
Pet limit
  • No more than 3 dogs over 4 months old.
    Applies: Applies in R-1, R-D, R-G garden apartment and R-E residential districts.
    § 3.22 · code text
    It shall be unlawful for anyone to keep, maintain, board or harbor more than three dogs or three cats over four months old on any lot or premises in residential districts in the city designated in the zoning ordinance of the city as one-family residence or R-1 districts, duplex residence or R-D districts, multiple residence or R-M districts in garden apartment developments or R-G districts, or residential estate or R-E districts.
  • No more than 3 cats over 4 months old.
    Applies: Applies in R-1, R-D, R-G garden apartment and R-E residential districts.
    § 3.22 · code text
    It shall be unlawful for anyone to keep, maintain, board or harbor more than three dogs or three cats over four months old on any lot or premises in residential districts in the city designated in the zoning ordinance of the city as one-family residence or R-1 districts, duplex residence or R-D districts, multiple residence or R-M districts in garden apartment developments or R-G districts, or residential estate or R-E districts.

Other Fairfield rules on this

Fairfield's code also has these chapters. We have not summarized their values on this page yet; read them in the library.

Who this affects

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Frequently asked questions

How tall can a fence be in Fairfield?

Fairfield limits fences at single-family homes and duplexes to 42 inches within 15 feet of the front property line and 7 feet beyond.

How big can a shed or accessory building be in Fairfield?

At single-family homes and duplexes, Fairfield limits small accessory structures (60 square feet or less) to 7 feet and large ones to 16 feet.

Can I run a business from my home in Fairfield?

Fairfield keeps home businesses inside the home, with resident workers only and up to 8 patron visits a day.

Can I park an RV or boat at my home in Fairfield?

Fairfield's code: No more than 72 hours. (Applies to any vehicle, boat or RV on any public right-of-way.) (§ 11.7.2); Overnight for no more than 72 hours in a row, twice in any 7-day period. (Applies to a homeowner's, tenant's or out-of-town visitor's boat or RV on the street next to the owner's home.) (§ 11.7.2).

Do I need a permit for solar panels or an EV charger in Fairfield?

Fairfield's code: Fast nondiscretionary permit, issued when the station meets all code rules; apply in person, by mail or electronically. (Applies to installing an electric vehicle charging station anywhere in the city.) (§ 5.1.4.10); Must not exceed the maximum legal building height. (Required to qualify as a small rooftop home solar system for fast review.) (§ 5.1.4.9).

Do I need a permit to remove a tree in Fairfield?

Fairfield's code: Yes, a Tree Removal Permit is required. (Applies to removing a protected tree outside a project reviewed by the Department, Commission or Council, and outside the Public Tree Conservation Policy.) (§ 25.36.5); All trees on public property. (§ 25.36.3).

Can I keep chickens or bees at my home in Fairfield?

Fairfield's code: No more than 3 dogs over 4 months old. (Applies in R-1, R-D, R-G garden apartment and R-E residential districts.) (§ 3.22); No more than 3 cats over 4 months old. (Applies in R-1, R-D, R-G garden apartment and R-E residential districts.) (§ 3.22).

General information, not legal advice.

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