Hidden Hills · Building on your lot
Building on your lot in Hidden Hills
Hidden Hills lets the Planning Director allow minor structures in the required setbacks of the RA-S zone.
Key points
- Minor structures: In the RA-S zone, minor structures allowed by the Planning Director in required setbacks have a 6-foot limit.
- What is excluded: Play houses, built-in barbecues and solid fences do not count as minor structures.
Each rule below is marked Hidden Hills 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
| Maximum height |
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|---|
Lot splits under SB 9
Hidden Hills code Each new lot must be at least 40% of the original lot's area. No more than 800 square feet of gross floor area.
All 12 Hidden Hills rules on lot splits under SB 9, with the code text →
Solar panels and EV chargers
Hidden Hills code The Building Official issues all needed permits when the application meets the city checklist. Electronic applications and electronic signatures are accepted.
All 6 Hidden Hills rules on solar panels and EV chargers, with the code text →
Tree removal
Hidden Hills code Emergency removal when Planning Director, law enforcement or LA County Fire finds an imminent threat to public safety or welfare. Exempt: removal or relocation needed for adequate line-of-sight distances.
All 11 Hidden Hills rules on tree removal, with the code text →
Swimming pools
Hidden Hills code No more than 2 inches between the ground and the bottom of the barrier. No more than 4 inches between the pool top and the barrier bottom.
All 14 Hidden Hills rules on swimming pools, with the code text →
Noise and construction hours
Hidden Hills code 7:00 a.m. to 8:00 p.m. 8:00 a.m. to 8:00 p.m. on Saturdays.
All 5 Hidden Hills rules on noise and construction hours, 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 |
Home alarm permits and false alarms
| False alarm fees |
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|---|
Trash and recycling carts
| When carts must come back |
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|---|---|
| When carts may go to the curb |
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| Where carts are kept |
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Other Hidden Hills rules on this
Hidden Hills's code also has these chapters. We have not summarized their values on this page yet; read them in the library.
- Beekeeping not allowed (§ 3-6-48)
- Parking or storing oversize vehicles and RVs (§ 4-4D-10)
- Floodplain management (Ch. 9 (Title 5))
- When grading needs a permit (§ 5-5B-6)
- Building near a ridgeline (Ch. 2, Art. K)
Who this affects
Frequently asked questions
How big can a shed or accessory building be in Hidden Hills?
In the RA-S zone, minor structures allowed by the Planning Director in required setbacks have a 6-foot limit. Play houses, built-in barbecues and solid fences do not count as minor structures.
Can I run a family child care home in Hidden Hills?
California law sets this for every city, including Hidden Hills: 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 Hidden Hills?
Hidden Hills's code: A service charge for each false alarm. The City Council sets the amount by resolution. (§ 4-7-5).
When can trash carts go out to the curb in Hidden Hills?
Hidden Hills's code: Containers must be removed by 11:00 p.m. on the day of collection (§ 3-4-9); No more than 24 hours before collection is scheduled to begin. (§ 3-4-9).
General information, not legal advice.
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