Lathrop · Building on your lot
Building on your lot in Lathrop
Lathrop's city code limits accessory structure height and setbacks in residential districts and sets strict limits on home businesses. A home business needs a home occupation permit, and several business types are not allowed.
Key points
- Accessory structures: In the R-1 district, city code limits accessory structures to 15 feet; those over 8 feet need a 5-foot interior side and rear setback.
- Home businesses: City code bars business visitors and customers, except educational uses with at most 2 students at once; only residents may work there.
Each rule below is marked Lathrop code or CA state law and links to the section it comes from (checked October 2026). General information, not legal advice.
Sheds, garages and other accessory structures
Lathrop code In the R-1 district, city code limits accessory structures to 15 feet; those over 8 feet need a 5-foot interior side and rear setback.
All 5 Lathrop rules on sheds, garages and other accessory structures, with the code text →
Running a business from home
Lathrop code City code bars business visitors and customers, except educational uses with at most 2 students at once; only residents may work there.
All 7 Lathrop rules on running a business from home, with the code text →
RV and boat parking
| Parking on the street |
|
|---|
Solar panels and EV chargers
| EV charger permit |
|
|---|---|
| Solar permit process |
|
Pets, chickens and bees
Lathrop code With an animal control permit: at most 2 hives per lot, none within 50 feet of a property line. Yes; at least 200 feet from any dwelling other than the owner's, or any public place, school or park.
All 5 Lathrop rules on pets, chickens and bees, with the code text →
Building in a flood zone
Lathrop code A development permit is needed before any construction or other development begins in a special flood hazard area. No new construction or development, including fill, unless all development combined raises base flood level no more than 1 foot.
All 4 Lathrop rules on building in a flood zone, with the code text →
Grading and erosion control
| Grading without a permit |
|
|---|
Noise and construction hours
| Construction hours on weekdays |
|
|---|---|
| Construction hours on weekends and holidays |
|
Garage and yard sales
| How long a sale may last |
|
|---|---|
| Sales per year |
|
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 |
Group homes and residential care
| Homes for 7 or more |
|
|---|
Home alarm permits and false alarms
| How long an alarm may sound |
|
|---|
Signs on homes
Lathrop code Any number of signs, each up to 4 square feet per face, for up to 90 days a calendar year. Signs may be up to 3 feet high.
Trash and recycling carts
Lathrop code Subscribe to a basic recycling service that includes at least collection of recyclable materials and green waste. Separate recyclable materials, green waste and organic waste from solid waste, using the contractor's three-bin system.
All 4 Lathrop rules on trash and recycling carts, with the code text →
Other Lathrop rules on this
Lathrop's code also has these chapters. We have not summarized their values on this page yet; read them in the library.
- Capital facilities fees (Ch. 3.20)
- County capital facilities fee (§ 3.32.030)
Who this affects
Frequently asked questions
Do I need a permit for solar panels or an EV charger in Lathrop?
Lathrop's code: Approved administratively when the complete application meets the checklist; apply in person or electronically with fees; only 1 inspection. (Applies to small residential rooftop solar systems.) (§ 15.30.030); Apply electronically on the city form with plans meeting the checklist; the permit is issued once all fees are paid. (Applies to EV charging systems.) (§ 15.32.040).
What are the grading rules in Lathrop?
Lathrop's code: Minor cuts or fills; permitted pool work; retaining walls under 3 feet, no surcharge; approved utility trenches, post holes, wells. (Cuts or fills under 2 feet and 50 cubic yards per 2 years; not in conflict with general or specific plans; other permits may apply.) (§ 15.54.070).
What are the noise rules and construction hours in Lathrop?
Lathrop's code: 7 a.m. to 10 p.m. (Outdoor construction in or within 500 feet of residential zones, except Fridays, Saturdays and holidays; later work needs a permit; emergencies exempt.) (§ 8.20.110); 9 a.m. to 11 p.m. (Fridays, Saturdays and holidays, outdoor construction in or within 500 feet of residential zones; later work needs a permit; emergencies exempt.) (§ 8.20.110).
What are the garage sale rules in Lathrop?
Lathrop's code: No more than 2 sales per year. (In R or RM zoning districts.) (§ 17.16.110); No more than 3 days per sale. (In R or RM zoning districts.) (§ 17.16.110).
Can I run a family child care home in Lathrop?
California law sets this for every city, including Lathrop: 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)).
Where are group homes and residential care homes allowed in Lathrop?
Lathrop's code: A Conditional Use Permit (CUP) is required. (Applies to a residential care facility of seven or more persons.) (§ 17.30.310).
Do I need a permit for a home alarm in Lathrop?
Lathrop's code: An audible alarm must stop or automatically reset within 30 minutes of being activated. (§ 8.04.030).
General information, not legal advice.
Ask about a specific Lathrop property
Ask GoCodebook how these rules apply to your address and get an answer that cites the section.
Ask your question