Greenfield · Building on your lot
Building on your lot in Greenfield
Greenfield sets its own limits for accessory structures and home businesses, and requires a building permit for masonry and stone walls. Accessory structure setbacks depend on size, height and material.
Key points
- Accessory structures: Greenfield limits accessory structures to 16 ft and, together, to 30% of the rear yard, or 25% in the residential estate district.
- Home businesses: Greenfield home businesses may use 20% of the home and see 1 client at a time, at most 8 daily; a permit is required.
- Masonry walls: Greenfield requires a building permit before construction of masonry and stone walls.
Each rule below is marked Greenfield code or CA state law and links to the section it comes from (checked October 2026). General information, not legal advice.
Fences and walls
| Permit |
|
|---|
Sheds, garages and other accessory structures
Greenfield code Greenfield limits accessory structures to 16 ft and, together, to 30% of the rear yard, or 25% in the residential estate district.
All 13 Greenfield rules on sheds, garages and other accessory structures, with the code text →
Running a business from home
Greenfield code Greenfield home businesses may use 20% of the home and see 1 client at a time, at most 8 daily; a permit is required.
All 14 Greenfield rules on running a business from home, with the code text →
Solar panels and EV chargers
| Solar permit process |
|
|---|
Pets, chickens and bees
Greenfield code No, unless specifically allowed by the city's animal rules. At least 50 feet.
All 6 Greenfield rules on pets, chickens and bees, with the code text →
Building in a flood zone
| Floodplain permit |
|
|---|---|
| Building in a floodway |
|
| Height of the lowest floor |
|
Outdoor lighting
Greenfield code Outdoor lights must be off from 11:00 p.m. to 6:00 a.m., on timers. Light may be at most 0.1 foot-candle.
All 4 Greenfield rules on outdoor lighting, with the code text →
Family child care homes
| 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 |
Affordable units in new housing (inclusionary)
Greenfield code The fee is 20% of the cost to develop the average market-rate unit, times the number of units paid for. The rule applies to developments of 5 or more units or lots.
All 11 Greenfield rules on affordable units in new housing (inclusionary), with the code text →
Group homes and residential care
Greenfield code Parking depends on demonstrated need, capped at what other residential uses in the zone need. Chapter 17.58 also applies. A conditional use permit is required.
All 5 Greenfield rules on group homes and residential care, with the code text →
Home alarm permits and false alarms
| False alarm fees |
|
|---|
Signs on homes
Greenfield code Less than 4 square feet; erected no earlier than 45 days before the election; removed within 7 days after. Permitted during and at the site of the political event or demonstration.
All 7 Greenfield rules on signs on homes, with the code text →
Trash and recycling carts
| Sorting organics and green waste |
|
|---|
Other Greenfield rules on this
Greenfield's code also has these chapters. We have not summarized their values on this page yet; read them in the library.
- Loud and disturbing noise (§ 9.28.030)
- Fire mitigation fee for new buildings (Ch. 19.20)
- Regional traffic impact fee (§ 19.50.030)
Who this affects
Frequently asked questions
How tall can a fence be in Greenfield?
Greenfield requires a building permit before construction of masonry and stone walls.
Do I need a permit for solar panels or an EV charger in Greenfield?
Greenfield's code: Approved administratively when complete and meeting the checklist; only one inspection; apply in person, by mail or electronically. (Small residential rooftop solar systems.) (§ 15.28.030); A building permit is required. (All solar energy system installations.) (§ 15.28.030).
What are the rules for building in a Greenfield flood zone?
Greenfield's code: You need a development permit before any construction or development, including manufactured homes, in a special flood hazard area. (§ 8.48.150); The lowest floor must be at or above the base flood elevation. (New or substantially improved homes in AE, AH and A1-30 zones.) (§ 8.48.170).
Can I run a family child care home in Greenfield?
California law sets this for every city, including Greenfield: 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)).
Do I need a permit for a home alarm in Greenfield?
Greenfield's code: A charge set by city council resolution. (Each false alarm police response after a Notice of Violation has been mailed.) (§ 8.40.030).
When can trash carts go out to the curb in Greenfield?
Greenfield's code: Put recyclables, green waste and food waste in separate collection containers, carts or bins. (Single-family residences, multifamily dwellings and nonresidential uses.) (§ 13.34.225).
General information, not legal advice.
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