Brentwood · Zoning · R-3
Brentwood R-3 zoning: height, setbacks and lot size
In Brentwood's R-3 zone, buildings can be up to 36 ft (3 stories) tall, the front setback is 10 ft and the minimum lot size is 6,000 sq ft (Brentwood code, read October 2026).
Key points
- Maximum building height: 36 ft
- Maximum number of stories: 3 stories
- Minimum front setback: 10 ft
- Minimum side setback: 5 ft (Sum of both sides: 15 feet)
- Minimum rear setback: 20 ft
- Minimum lot size: 6,000 sq ft
- Maximum lot coverage: 40%
- Maximum density: 1 unit per 1,500 sq ft (Lots having a net area of 12,000 square feet or less)
R-3 (HIGH DENSITY MULTIFAMILY RESIDENTIAL) is a zoning district in Brentwood. Every value below was read from the Brentwood 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 R-3
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 | 36 ft § 17.150.004 · code textI. Maximum building height limit: three stories not to exceed thirty-six feet. |
|---|---|
| Maximum number of stories | 3 stories § 17.150.004 · code textI. Maximum building height limit: three stories not to exceed thirty-six feet. |
| Minimum front setback | 10 ft § 17.150.004 · code textC. Minimum front yard: ten feet; |
| Minimum side setback | 5 ft Applies: Sum of both sides: 15 feet § 17.150.004 · code textD. Minimum side yards: five feet, sum of both sides: fifteen feet; |
| Minimum rear setback | 20 ft § 17.150.004 · code textE. Minimum rear yard: twenty feet; |
| Minimum lot size | 6,000 sq ft § 17.150.004 · code textA. Minimum lot area: six thousand square feet; |
| Maximum lot coverage | 40% § 17.150.004 · code textH. Maximum Lot Coverage. The main building and all accessory buildings shall not cover more than forty percent of the lot area; |
| Maximum density | 1 unit per 1,500 sq ft Applies: Lots having a net area of 12,000 square feet or less § 17.150.004 · code text1. The minimum net lot area per dwelling unit shall be one thousand five hundred square feet for those lots having a net area of twelve thousand square feet or less, |
When a different number applies
The code sets other values for particular lots, buildings or locations in R-3:
- Minimum side setback: 10 ft — Corner lots; street side yard § 17.150.004
- Maximum density: 1 unit per 2,000 sq ft — Lots having a net area of twelve thousand to thirty thousand square feet § 17.150.004
- Maximum density: 16 units per gross acre — Lots greater than thirty thousand square feet § 17.150.004
- Maximum density: 20 units per gross acre — Greater density may be approved with a conditional use permit § 17.150.004
Not on this page
We did not find a general FAR limit for R-3 in the zoning tables we read. The code may still set one elsewhere — check the Brentwood Municipal Code.
Other Brentwood zoning districts
Who this affects
Frequently asked questions
What is the maximum building height in Brentwood's R-3 zone?
36 ft — Brentwood Municipal Code § 17.150.004.
What is the maximum number of stories in Brentwood's R-3 zone?
3 stories — Brentwood Municipal Code § 17.150.004.
What is the minimum front setback in Brentwood's R-3 zone?
10 ft — Brentwood Municipal Code § 17.150.004.
What is the minimum side setback in Brentwood's R-3 zone?
5 ft (sum of both sides: 15 feet) — Brentwood Municipal Code § 17.150.004.
What is the minimum rear setback in Brentwood's R-3 zone?
20 ft — Brentwood Municipal Code § 17.150.004.
General information, not legal advice.
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