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San Juan Capistrano · Building on your lot

Sheds, garages and other accessory structures in San Juan Capistrano

Detached accessory structures may be no taller than the main building on the site (city rule).

Ask about sheds, garages and other accessory structures in San Juan Capistrano See coverage

Key points

  • Accessory height: Detached accessory structures may be no taller than the main building on the site (city rule).

Each rule below links to the section of the San Juan Capistrano Municipal Code it was read from, with the code text one click away (checked October 2026). General information, not legal advice.

What San Juan Capistrano's code says

San Juan Capistrano code What San Juan Capistrano's code adds
Maximum height
  • No higher than the main structure on the site.
    Applies: Detached accessory structures.
    § 9-3.501 · code text
    Shall not exceed the height of the principal structure on the building site;
Size or lot coverage
  • No more than 40% of the length of the main building wall it is attached to.
    Applies: Attached decks over 6 feet high, measured from finished grade.
    § 9-3.501 · code text
    Attached decks over six feet in height measured from finished grade shall not exceed 40% of the total length of the main building elevation to which it is attached.
Side and rear setback
  • At least as far from the rear property line as the structure is tall.
    Applies: Detached accessory structures under 450 square feet of gross floor area.
    § 9-3.501 · code text
    If less than 450 square feet in gross floor area, the structure shall be located a minimum distance from the parcel’s rear property line equal to the height of the structure.
  • At least 5 feet from the rear property line.
    Applies: Detached fireplaces and landscape structures under 6 feet high. They must also meet the district's side yard setback.
    § 9-3.501 · code text
    For detached fireplaces and landscape structures with a height less than six feet, they shall maintain the minimum side yard setback for the district, and maintain a minimum five foot rear yard setback.
  • At least 5 feet from the rear property line.
    Applies: Play structures such as swings and playgrounds. They must also meet the district's side yard setback.
    § 9-3.501 · code text
    Recreational play structures including swings, playgrounds, etc., shall maintain the same side yard setback for the district, with a minimum five foot rear yard setback.
Distance from the house
  • At least 6 feet from the main building.
    Applies: Detached accessory structures.
    § 9-3.501 · code text
    Shall maintain a minimum separation of six feet between the detached accessory structure and the main building;

Who this affects

HomeownersContractorsDesigners

Frequently asked questions

How big can a shed or accessory building be in San Juan Capistrano?

Detached accessory structures may be no taller than the main building on the site (city rule).

General information, not legal advice.

Ask about a specific San Juan Capistrano property

Ask GoCodebook how San Juan Capistrano's sheds, garages and other accessory structures rules apply to your situation and get an answer that cites the section.

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San Juan Capistrano Municipal Code — full text