Hidden Hills · Zoning · RA-S
Hidden Hills RA-S zoning: height, setbacks and lot size
In Hidden Hills's RA-S zone, generally buildings can be up to 34 ft tall, the front setback is 50 ft and the minimum lot size is 1 acre, with the conditions listed below (Hidden Hills code, read October 2026).
Key points
- Maximum building height: 34 ft (Roof ridge more than 75 ft from the front property line (ridge max 30 ft); closer dwellings have lower limits)
- Minimum front setback: 50 ft
- Minimum side setback: 15 ft from easement line or 25 ft from closest side lot line
- Minimum rear setback: 50 ft
- Minimum lot size: 1 acre
- Maximum lot coverage: 25%
RA-S (RA-S Zone) is a zoning district in Hidden Hills. Every value below was read from the Hidden Hills Municipal Code and links to its section (read October 2026). State laws such as the ADU and SB 9 rules can allow more on a residential lot. General information, not legal advice — read the code text and check with the city before you build.
Development standards in RA-S
The general rule for a typical lot in this zone. Zoning tables often attach notes, such as rules for corner lots, lots next to a residential zone, or new subdivisions only. Open “code text” under a value to see the table cell or sentence it was read from.
| Maximum building height | 34 ft Applies: Roof ridge more than 75 ft from the front property line (ridge max 30 ft); closer dwellings have lower limits § 5-2C-3 · code textFor dwellings whose roof ridge is more than 75 feet from the front yard property line or from the property line that is closest to the edge of the roadway easement (in the case of lots that front roadways established by easement), the maximum height of the roof ridge shall not exceed 30 feet. In addition, the building height cap shall not exceed 34 feet. |
|---|---|
| Minimum front setback | 50 ft § 5-2C-4 · code textEvery lot or parcel in the RA-S Zone shall have a front yard setback of not less than 50 feet measured from the road easement line to the closest supporting member of the structure. |
| Minimum side setback | 15 ft from easement line or 25 ft from closest side lot line § 5-2C-4 · code textEvery lot or parcel in the RA-S Zone shall have side yard setbacks of not less than 15 feet from the easement line or not less than 25 feet from the closest side lot line. |
| Minimum rear setback | 50 ft § 5-2C-4 · code textEvery lot or parcel in the RA-S Zone shall have a rear yard of not less than 50 feet. |
| Minimum lot size | 1 acre § 5-2C-2 · code textThe minimum required area of a lot or parcel in the RA-S Zone shall be one acre excluding: |
| Maximum lot coverage | 25% § 5-2C-2 · code textAll buildings, including accessory buildings, shall not cover more than 25 percent of the net area of the lot. |
When a different number applies
The code sets other values for particular lots, buildings or locations in RA-S:
- Maximum building height: 30 ft — For dwellings whose roof ridge is less than 65 feet from the front yard property line or applicable roadway-easement property line; building height cap § 5-2C-3
- Maximum building height: 26 ft — For dwellings whose roof ridge is less than 65 feet from the front yard property line or applicable roadway-easement property line; roof ridge § 5-2C-3
- Maximum building height: 32 ft — For dwellings whose roof ridge is between 65 feet and 75 feet from the front yard property line or applicable roadway-easement property line; building height cap § 5-2C-3
- Maximum building height: 28 ft — For dwellings whose roof ridge is between 65 feet and 75 feet from the front yard property line or applicable roadway-easement property line; roof ridge § 5-2C-3
- Minimum side setback: 25 ft — When a side yard abuts a street (road) easement; measured from the edge of the street (road) easement § 5-2C-4
Not on this page
We did not find a general stories, FAR, density limit for RA-S in the zoning tables we read. The code may still set one elsewhere — check the Hidden Hills Municipal Code.
Other Hidden Hills zoning districts
Who this affects
Frequently asked questions
What is the maximum building height in Hidden Hills's RA-S zone?
34 ft (roof ridge more than 75 ft from the front property line (ridge max 30 ft); closer dwellings have lower limits) — Hidden Hills Municipal Code § 5-2C-3.
What is the minimum front setback in Hidden Hills's RA-S zone?
50 ft — Hidden Hills Municipal Code § 5-2C-4.
What is the minimum side setback in Hidden Hills's RA-S zone?
15 ft from easement line or 25 ft from closest side lot line — Hidden Hills Municipal Code § 5-2C-4.
What is the minimum rear setback in Hidden Hills's RA-S zone?
50 ft — Hidden Hills Municipal Code § 5-2C-4.
What is the minimum lot size in Hidden Hills's RA-S zone?
1 acre — Hidden Hills Municipal Code § 5-2C-2.
General information, not legal advice.
Ask about a Hidden Hills property in RA-S
Ask GoCodebook what you can build at a specific address and get an answer that cites the section.
Ask your question