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Moraga · Building on your lot

Building on your lot in Moraga

Moraga sets its own fence heights and accessory-structure limits. Fence limits depend on the setback area and on zoning administrator or design review board approval.

Key points

  • Fence height: Moraga limits fences to 3 ft in front and exterior side setbacks, 6 ft in side and rear setbacks, without approval.
  • Sheds: Moraga lets sheds and playhouses up to 120 sq ft and 8 ft high sit anywhere in required side or rear yards if screened.

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

Fences and walls

Moraga code Moraga limits fences to 3 ft in front and exterior side setbacks, 6 ft in side and rear setbacks, without approval.

All 7 Moraga rules on fences and walls, with the code text →

Sheds, garages and other accessory structures

Moraga code Moraga lets sheds and playhouses up to 120 sq ft and 8 ft high sit anywhere in required side or rear yards if screened.

All 5 Moraga rules on sheds, garages and other accessory structures, with the code text →

Pets, chickens and bees

Moraga code No bee colonies. At most 4 honey bee colonies, plus 1 nucleus colony per permitted colony.

All 14 Moraga rules on pets, chickens and bees, with the code text →

Building in a flood zone

Moraga code What Moraga's code adds
Floodplain permit
  • A development permit is needed before any construction or development, including manufactured homes, in a special flood hazard area.
    Applies: The application must cover structures, utilities, grading, fill, drainage, floodways, elevations and related certifications.
    § 8.108.100 · code text
    A development permit shall be obtained before any construction or other development, including manufactured homes, within any area of special flood hazard established in Section 8.108.030.
Building in a floodway
  • No new construction or development, including fill, unless all development combined raises base flood levels no more than 1 foot.
    Applies: Applies in Zones A1-30 and AE until a regulatory floodway is adopted. The limit applies at any point in the town.
    § 8.108.170 · code text
    Until a regulatory floodway is adopted, no new construction, substantial development, or other development (including fill) shall be permitted within Zones A1-30 and AE, unless it is demonstrated that the cumulative effect of the proposed development, when combined with all other development, will not increase the water surface elevation of the base flood more than one foot at any point within the town of Moraga.
  • No encroachments, including fill, new construction and substantial improvements, unless a registered civil engineer certifies no flood level rise.
    Applies: Applies within an adopted regulatory floodway, for flood levels during the base flood discharge.
    § 8.108.170 · code text
    Within an adopted regulatory floodway, the town of Moraga shall prohibit encroachments, including fill, new construction, substantial improvements, and other development, unless certification by a registered civil engineer is provided demonstrating that the proposed encroachment shall not result in any increase in flood levels during the occurrence of the base flood discharge.
Height of the lowest floor
  • The lowest floor must be 2 feet above the base flood elevation.
    Applies: New or substantially improved homes in AE, AH and A1-30 zones.
    § 8.108.120 · code text
    In AE, AH, A1-30 Zones, elevated two feet above the base flood elevation;
  • The lowest floor must be 2 feet above the flood map's depth number, measured from the highest adjacent grade.
    Applies: New or substantially improved homes in an AO zone where the flood map (FIRM) shows a depth number.
    § 8.108.120 · code text
    In an AO Zone, elevated above the highest adjacent grade to a height two feet above the depth number specified in feet on the FIRM, or elevated at least four feet above the highest adjacent grade if no depth number is specified;
  • The lowest floor must be at least 4 feet above the highest adjacent grade.
    Applies: New or substantially improved homes in an AO zone where the flood map (FIRM) shows no depth number.
    § 8.108.120 · code text
    or elevated at least four feet above the highest adjacent grade if no depth number is specified;
  • The lowest floor must be at or above the base flood elevation.
    Applies: New or substantially improved homes in an unnumbered A zone, where the flood map (FIRM) shows no base flood elevation.
    § 8.108.120 · code text
    In an A Zone, without BFE's specified on the FIRM (unnumbered A zone), elevated to or above the base flood elevation;

Grading and erosion control

Moraga code What Moraga's code adds
When a grading permit is needed
  • A permit is needed when the total earth moved is 50 cubic yards or more.
    Also needed for grading of 10,000 square feet or more, over 3 feet deep, near a watercourse, or unretained within 9 feet of a neighbor.
    § 14.04.031 · code text
    The cumulative volume of earth material moved is fifty (50) cubic yards or greater;
Grading without a permit
  • Building water wells when a valid permit has been obtained from the county health department.
    Applies: Exempt from the town grading permit. An exemption is not authorization to do work that violates the chapter or other laws.
    § 14.04.032 · code text
    Construction of water wells when a valid permit has been obtained from the county health department;

Park and impact fees for new homes

Moraga code The fee equals the fair market value of the land that would otherwise be dedicated. 3 acres of park area per 1,000 people.

All 3 Moraga rules on park and impact fees for new homes, with the code text →

Noise and construction hours

Moraga code What Moraga's code adds
Construction hours on weekdays
  • 8 a.m. to 5 p.m.
    Applies: Every day. Outside construction or repair in or within 500 feet of a residential zone that disturbs residents. Emergency work is excepted.
    § 7.12.090 · code text
    between the hours of five p.m. of one day and eight a.m. of the next day

Family child care homes

CA state law California law
Zoning
A small or large family child care home is a residential use and a use by right under all local ordinances, including zoning
Business license or fee
A city or county may not charge a business license, fee or tax to run a family child care home
Local rules
Local limits on height, setbacks, lot size, health and safety must be the same as for every other home in the same zone
Small home
Up to eight children, counting the provider's own children under 10 who live there
Large home
7 to 14 children, counting the provider's own children under 10 who live there

Parking spaces required for homes

Moraga code Not in the required front or side yard setback of the principal structure Not in the required front or side yard setback of the principal structure

All 11 Moraga rules on parking spaces required for homes, with the code text →

Home alarm permits and false alarms

Moraga code The sound must deactivate within 20 minutes A service charge for each false alarm; the amount is set by town council resolution

All 4 Moraga rules on home alarm permits and false alarms, with the code text →

Signs on homes

Moraga code 6 square feet 12 square feet

All 7 Moraga rules on signs on homes, with the code text →

Historic homes

Moraga code Over 50 years old Under 50 years old only if enough time has passed to understand the resource's historical significance

All 4 Moraga rules on historic homes, with the code text →

Other Moraga rules on this

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

Who this affects

HomeownersContractorsDesigners

Frequently asked questions

What are the rules for building in a Moraga flood zone?

Moraga's code: A development permit is needed before any construction or development, including manufactured homes, in a special flood hazard area. (The application must cover structures, utilities, grading, fill, drainage, floodways, elevations and related certifications.) (§ 8.108.100); The lowest floor must be 2 feet above the base flood elevation. (New or substantially improved homes in AE, AH and A1-30 zones.) (§ 8.108.120).

What are the grading rules in Moraga?

Moraga's code: A permit is needed when the total earth moved is 50 cubic yards or more. (Also needed for grading of 10,000 square feet or more, over 3 feet deep, near a watercourse, or unretained within 9 feet of a neighbor.) (§ 14.04.031); Building water wells when a valid permit has been obtained from the county health department. (Exempt from the town grading permit. An exemption is not authorization to do work that violates the chapter or other laws.) (§ 14.04.032).

What are the noise rules and construction hours in Moraga?

Moraga's code: 8 a.m. to 5 p.m. (Every day. Outside construction or repair in or within 500 feet of a residential zone that disturbs residents. Emergency work is excepted.) (§ 7.12.090).

Can I run a family child care home in Moraga?

California law sets this for every city, including Moraga: Zoning: A small or large family child care home is a residential use and a use by right under all local ordinances, including zoning (Health & Safety Code § 1597.45(a)); Business license or fee: A city or county may not charge a business license, fee or tax to run a family child care home (Health & Safety Code § 1597.45(b)); Local rules: Local limits on height, setbacks, lot size, health and safety must be the same as for every other home in the same zone (Health & Safety Code § 1597.45(e)); Small home: Up to eight children, counting the provider's own children under 10 who live there (Health & Safety Code § 1596.78(c)); Large home: 7 to 14 children, counting the provider's own children under 10 who live there (Health & Safety Code § 1596.78(b)).

General information, not legal advice.

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