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Cotati · Building on your lot

Building on your lot in Cotati

Cotati sets fence heights by setback area and material, limits detached accessory structures in height and setback coverage, and limits home business space and visits. Fences over 7 feet need a building permit.

Key points

  • Fence height: City rule: solid fences in front or street side setbacks are limited to 42 inches; in interior side or rear setbacks, 7 feet.
  • Accessory structures: Detached non-garage accessory structures are limited to 12 feet without a minor use permit; in side and rear setbacks, 500 square feet combined.
  • Home businesses: Home businesses may use at most 25% of the home, with 12 vehicle trips a day and 1 client or family at a time.

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

Fences and walls

Cotati code What Cotati's code adds
Corner visibility
  • No more than 3 feet high.
    Applies: Sight visibility areas where alleys, streets and driveways meet.
    § 17.30.030 · code text
    At intersections of alleys, streets, and driveways within sight visibility areas. See 17.30.040E (Height limit at street corners). | 3 ft. | 3 ft.
Height anywhere on the lot
  • No more than 8 feet high.
    Applies: Outside a required setback. The part above 7 feet must be open design, and a fence over 7 feet needs a building permit.
    § 17.30.030 · code text
    Outside of a required setback | 8 ft. (1) | 8 ft. (1)
Permit
  • A minor use permit and administrative design review are required.
    Applies: A fence taller than 8 feet.
    § 17.30.030 · code text
    A fence exceeding eight feet in height may be allowed with approval of a minor use permit and administrative design review.
  • A building permit is required.
    Applies: A fence or wall in a flood area shown on a Federal Flood Insurance Rate Map.
    § 17.30.030 · code text
    A fence or wall in an area subject to flooding identified on a Federal Flood Insurance Rate Map (FIRM) on file in the department shall require a building permit,
  • A building permit is required.
    Applies: Any fence taller than 7 feet.
    § 17.30.030 · code text
    Any fence exceeding seven feet in height requires a Building Permit.
Front yard height
  • No more than 42 inches high.
    Applies: Solid walls, hedges or fences in the front or street side setback.
    § 17.30.030 · code text
    Solid wall, hedge, or fencing: 42 in.
  • Up to 6 feet high.
    Applies: Fences in the front or street side setback in RR zones.
    § 17.30.030 · code text
    Up to 6 ft. is allowed in RR;
  • Up to 72 inches high.
    Applies: Fences from 42 to 72 inches in the front or street side setback, with Administrative Design Review approval.
    § 17.30.030 · code text
    From 42 to 72 in. is allowed with Administrative Design Review approval.
Side and rear yard height
  • No more than 7 feet high.
    Applies: Residential interior side or rear setbacks. Up to 8 feet if the part above 7 feet is open; over 7 feet needs a building permit.
    § 17.30.030 · code text
    Within interior side or rear setback – Residential zone | 7 ft. (1) | 7 ft. (1)
  • No more than 7 feet high.
    Applies: In zones with no required setback, 20 feet or more behind a front or street side property line.
    § 17.30.030 · code text
    20 ft. or more to the rear of a front or street side property line | 7 ft. (1) | 7 ft. (1)

Sheds, garages and other accessory structures

Cotati code What Cotati's code adds
Maximum height
  • No more than 12 feet high.
    Applies: Accessory structures other than a detached garage. A minor use permit may allow more height.
    § 17.42.160 · code text
    The height of an accessory structure other than a detached garage shall not exceed 12 feet, except where a greater height is authorized through minor use permit approval.
Size or lot coverage
  • No more than 500 square feet in total.
    Applies: All accessory structures in required side and rear setbacks, on lots with a single-family home, with or without ADUs or JADUs.
    § 17.42.160 · code text
    Where permitted, the aggregate coverage of accessory structures in required side and rear setbacks shall not exceed 500 square feet for properties developed with a single family home with or without ADUs or JADUs.
  • Up to 400 square feet for each home.
    Applies: Accessory greenhouses in the RVL, NL, NM and NU zones.
    § 17.42.160 · code text
    An accessory greenhouse may occupy up to 400 square feet for each dwelling unit in the RVL, NL, NM, and NU zoning districts; and 1,000 square feet or 5% of the parcel area, whichever is smaller, in the RR zoning district.
  • Up to 1,000 square feet or 5% of the parcel area, whichever is smaller.
    Applies: Accessory greenhouses in the RR zone.
    § 17.42.160 · code text
    An accessory greenhouse may occupy up to 400 square feet for each dwelling unit in the RVL, NL, NM, and NU zoning districts; and 1,000 square feet or 5% of the parcel area, whichever is smaller, in the RR zoning district.
Side and rear setback
  • At least 5 feet from side and rear lines.
    Applies: Detached accessory structures 12 feet tall or less.
    § 17.42.160 · code text
    An accessory structure with a height of 12 feet or less shall maintain side and rear setbacks of at least five feet.
  • At least 5 feet from side property lines.
    Applies: Garages and carports. A zero side setback may be allowed with a neighbor's maintenance easement and 8 feet from the opposite side line.
    § 17.42.160 · code text
    A garage or carport shall be set back a minimum of five feet from side property lines, except that the review authority may authorize a zero side setback for a garage abutting a property line where the adjacent property owner has granted a maintenance easement, provided that the garage is located at least eight feet from the opposite side property line, and the maintenance easement is first reviewed and approved by the city.
  • At least 5 feet from the rear property line.
    Applies: Detached garages or carports that vehicles enter from the front of the lot.
    § 17.42.160 · code text
    A detached garage or carport shall be set back a minimum of five feet from the rear property line where vehicles access the garage or carport from the front of the lot, and shall be located a minimum of 25 feet from the opposite side of the alley where accessed from an alley.
  • At least 25 feet from the opposite side of the alley.
    Applies: Detached garages or carports that vehicles enter from an alley.
    § 17.42.160 · code text
    A detached garage or carport shall be set back a minimum of five feet from the rear property line where vehicles access the garage or carport from the front of the lot, and shall be located a minimum of 25 feet from the opposite side of the alley where accessed from an alley.
  • At least 10 feet from any property line.
    Applies: Patio covers in the required rear setback that are open on at least 3 sides.
    § 17.42.160 · code text
    No part of the patio cover shall be closer than 10 feet to a property line.
Distance from the house
  • At least 5 feet from the main home.
    Applies: Detached accessory structures. The same separation applies between accessory structures.
    § 17.42.160 · code text
    An accessory structure shall maintain at least a five-foot separation from other accessory structures and the primary dwelling unit.
  • The 5-foot separation from the main home does not apply.
    Applies: Patio covers, attached or detached, that are open on at least 3 sides.
    § 17.42.160 · code text
    The five-foot separation from the primary dwelling unit required by subsection E.1.c of this section does not apply;

Running a business from home

Cotati code What Cotati's code adds
Space used
  • No more than 25% of the home's gross floor area.
    Applies: Business activity inside the main home. A permitted enclosed accessory structure may be used instead.
    § 17.42.080 · code text
    All home occupation activities shall take place either inside the primary dwelling, occupying no more than 25% of the gross floor area of the dwelling, or in a permitted enclosed accessory structure.
Customer visits
  • No more than 12 vehicle trips per day.
    Applies: Trips by clients, customers or visitors to the home.
    § 17.42.080 · code text
    The home occupation shall be operated so as to not require more than 12 vehicle trips per day of clients, customers, and/or visitors to the residence.
  • Only 1 client or family at a time.
    Applies: Clients or customers present at the home.
    § 17.42.080 · code text
    On-site presence of clients or customers shall be limited to one client or family at a time, and only between the hours of 9:00 a.m. and 8:00 p.m.
  • Only from 9:00 a.m. to 8:00 p.m.
    Applies: Clients or customers present at the home.
    § 17.42.080 · code text
    On-site presence of clients or customers shall be limited to one client or family at a time, and only between the hours of 9:00 a.m. and 8:00 p.m.
Employees
  • No on-site employees other than full-time residents of the home.
    § 17.42.080 · code text
    A home occupation shall have no on-site employees other than full-time residents of the dwelling.
Permit
  • A city business license is required.
    § 17.42.080 · code text
    A home occupation shall require a city business license.

RV and boat parking

Cotati code What Cotati's code adds
Parking on the street
  • No more than 6 hours.
    Applies: Applies to trailers, such as boat or horse trailers, on a street, unless attached to a vehicle that can tow them.
    § 10.30.170 · code text
    No person who owns or has possession, custody or control of any trailer shall park such trailer upon any street, alley, public way or public place for more than six hours, unless such trailer, at all such times it is so parked, is attached to a motor vehicle capable of providing the motive power for moving the trailer upon the highway, street, alley, public way or public place.

Solar panels and EV chargers

Cotati code What Cotati's code adds
EV charger permit
  • Permit issued the same day over the counter, or within 1 to 3 business days for electronic applications.
    Applies: Applies to complete applications that meet the approved checklist and standard plan.
    § 14.38.060 · code text
    The building division shall issue a building permit or other nondiscretionary permit the same day for over-the-counter applications, or within one to three business days for electronic applications, of receipt of a complete application that meets the requirements of the approved checklist and standard plan.
Review time
  • Permit issued the same business day over the counter, or within 1 to 3 business days for electronic applications.
    Applies: Small residential rooftop solar, with a complete application that meets the approved checklist and standard plan.
    § 14.30.070 · code text
    The department shall issue a building permit or other nondiscretionary permit the same business day for over-the-counter applications, or for electronic applications, within one to three business days of receipt of a complete application that meets the requirements of the approved checklist and standard plan.

Tree removal

Cotati code What Cotati's code adds
Penalty
  • The owner must replace each tree and pay the penalty fee in the city fee schedule.
    Applies: Applies when a tree is removed without a permit.
    § 17.54.080 · code text
    In the event of the removal of a tree without a permit in compliance with this chapter, the city shall require the property owner to replace each tree in compliance with this chapter, and to pay the penalty fee established by the city's fee schedule.

Pets, chickens and bees

Cotati code What Cotati's code adds
Permit
  • A valid kennel license and any required land use permit for a commercial kennel.
    Applies: Applies to raising more than 2 litters of dogs or cats in 1 calendar year.
    § 7.12.020 · code text
    No person shall allow the parturition and rearing of more than two litters of dogs or cats in any one calendar year from the total number of females owned by him or her or maintained on his or her premises without a valid kennel license and any required land use permit for a commercial kennel.

Who this affects

HomeownersContractorsDesigners

Frequently asked questions

How tall can a fence be in Cotati?

City rule: solid fences in front or street side setbacks are limited to 42 inches; in interior side or rear setbacks, 7 feet.

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

Detached non-garage accessory structures are limited to 12 feet without a minor use permit; in side and rear setbacks, 500 square feet combined.

Can I run a business from my home in Cotati?

Home businesses may use at most 25% of the home, with 12 vehicle trips a day and 1 client or family at a time.

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

Cotati's code: No more than 6 hours. (Applies to trailers, such as boat or horse trailers, on a street, unless attached to a vehicle that can tow them.) (§ 10.30.170).

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

Cotati's code: Permit issued the same day over the counter, or within 1 to 3 business days for electronic applications. (Applies to complete applications that meet the approved checklist and standard plan.) (§ 14.38.060); Permit issued the same business day over the counter, or within 1 to 3 business days for electronic applications. (Small residential rooftop solar, with a complete application that meets the approved checklist and standard plan.) (§ 14.30.070).

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

Cotati's code: The owner must replace each tree and pay the penalty fee in the city fee schedule. (Applies when a tree is removed without a permit.) (§ 17.54.080).

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

Cotati's code: A valid kennel license and any required land use permit for a commercial kennel. (Applies to raising more than 2 litters of dogs or cats in 1 calendar year.) (§ 7.12.020).

General information, not legal advice.

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