South San Francisco · Zoning · RH-180
South San Francisco RH-180 zoning: height, setbacks and lot size
In South San Francisco's RH-180 zone, buildings can be up to 85 ft tall, the front setback is 10 ft and the minimum lot size is 20,000 sf (South San Francisco code, read October 2026).
Key points
- Maximum building height: 85 ft
- Minimum front setback: 10 ft
- Minimum side setback: 10 ft
- Minimum rear setback: 0 ft
- Minimum lot size: 20,000 sf
- Maximum lot coverage: 85%
- Maximum density: 180 du/ac
RH-180 is a zoning district in South San Francisco. Every value below was read from the South San Francisco 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 RH-180
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 | 85 ft § 20.070.003 · code textTable row “Max. Primary Building (ft/stories)”, column “RH-180”: 85 ft (D) |
|---|---|
| Minimum front setback | 10 ft § 20.070.003 · code textTable row “Min. Front Setback”, column “RH-180”: 10 ft (B) |
| Minimum side setback | 10 ft § 20.070.003 · code textTable row “Min. Interior Side Setback”, column “RH-180”: 10 ft (E) (G) (H) |
| Minimum rear setback | 0 ft § 20.070.003 · code textTable row “Min. Rear Setback”, column “RH-180”: 0 ft (B) (E) (I) |
| Minimum lot size | 20,000 sf § 20.070.003 · code textTable row “Min. Lot Area”, column “RH-180”: 20,000 sf (B) |
| Maximum lot coverage | 85% § 20.070.003 · code textTable row “Max. Lot Coverage”, column “RH-180”: 85% |
| Maximum density | 180 du/ac § 20.070.003 · code textTable row “Maximum Density”, column “RH-180”: 180 du/ac (A) |
Uses in RH-180
Uses the code's use tables allow in RH-180, or allow with a permit. Each links to its page with the code section.
- Single-family home — Allowed
- Apartment building — Allowed
- Live-work unit — Allowed
- Child care center — Allowed
- Private school — Needs a conditional use permit
Not on this page
We did not find a general stories, FAR limit for RH-180 in the zoning tables we read. The code may still set one elsewhere — check the South San Francisco Municipal Code.
Other South San Francisco zoning districts
Who this affects
Frequently asked questions
What is the maximum building height in South San Francisco's RH-180 zone?
85 ft — South San Francisco Municipal Code § 20.070.003.
What is the minimum front setback in South San Francisco's RH-180 zone?
10 ft — South San Francisco Municipal Code § 20.070.003.
What is the minimum side setback in South San Francisco's RH-180 zone?
10 ft — South San Francisco Municipal Code § 20.070.003.
What is the minimum rear setback in South San Francisco's RH-180 zone?
0 ft — South San Francisco Municipal Code § 20.070.003.
What is the minimum lot size in South San Francisco's RH-180 zone?
20,000 sf — South San Francisco Municipal Code § 20.070.003.
General information, not legal advice.
Ask about a South San Francisco property in RH-180
Ask GoCodebook what you can build at a specific address and get an answer that cites the section.
Ask your question