Sebastopol · Zoning · OS
Sebastopol OS zoning: height, setbacks and lot size
In Sebastopol's OS zone, generally buildings can be up to 17 ft (1 story) tall and the front setback is 20 ft, with the conditions listed below (Sebastopol code, read October 2026).
Key points
- Maximum building height: 17 ft (one story; the highest reviewing authority may approve a different requirement)
- Maximum number of stories: 1 story (not to exceed 17 ft; the highest reviewing authority may approve a different requirement)
- Minimum front setback: 20 ft (the highest reviewing authority may approve a different requirement)
- Minimum side setback: 10 ft (the highest reviewing authority may approve a different requirement)
- Minimum rear setback: 20 ft (the highest reviewing authority may approve a different requirement)
- Maximum floor area ratio (FAR): 0.10
OS (Open Space District) is a zoning district in Sebastopol. Every value below was read from the Sebastopol 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 OS
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 | 17 ft Applies: one story; the highest reviewing authority may approve a different requirement § 17.32.030 · code textTable row “Maximum building height”, column “OS”: One story , not to exceed 17 ft. (1) |
|---|---|
| Maximum number of stories | 1 story Applies: not to exceed 17 ft; the highest reviewing authority may approve a different requirement § 17.32.030 · code textTable row “Maximum building height”, column “OS”: One story , not to exceed 17 ft. (1) |
| Minimum front setback | 20 ft Applies: the highest reviewing authority may approve a different requirement § 17.32.030 · code textTable row “Front yard and secondary front yard”, column “OS”: 20 ft. (1) |
| Minimum side setback | 10 ft Applies: the highest reviewing authority may approve a different requirement § 17.32.030 · code textTable row “Side yard”, column “OS”: 10 ft. (1) |
| Minimum rear setback | 20 ft Applies: the highest reviewing authority may approve a different requirement § 17.32.030 · code textTable row “Rear yard”, column “OS”: 20 ft. (1) |
| Maximum floor area ratio (FAR) | 0.10 § 17.32.030 · code textTable row “Maximum floor area ratio”, column “OS”: 0.10 |
Not on this page
We did not find a general lot size, lot coverage, density limit for OS in the zoning tables we read. The code may still set one elsewhere — check the Sebastopol Municipal Code.
Other Sebastopol zoning districts
Who this affects
Frequently asked questions
What is the maximum building height in Sebastopol's OS zone?
17 ft (one story; the highest reviewing authority may approve a different requirement) — Sebastopol Municipal Code § 17.32.030.
What is the maximum number of stories in Sebastopol's OS zone?
1 story (not to exceed 17 ft; the highest reviewing authority may approve a different requirement) — Sebastopol Municipal Code § 17.32.030.
What is the minimum front setback in Sebastopol's OS zone?
20 ft (the highest reviewing authority may approve a different requirement) — Sebastopol Municipal Code § 17.32.030.
What is the minimum side setback in Sebastopol's OS zone?
10 ft (the highest reviewing authority may approve a different requirement) — Sebastopol Municipal Code § 17.32.030.
What is the minimum rear setback in Sebastopol's OS zone?
20 ft (the highest reviewing authority may approve a different requirement) — Sebastopol Municipal Code § 17.32.030.
General information, not legal advice.
Ask about a Sebastopol property in OS
Ask GoCodebook what you can build at a specific address and get an answer that cites the section.
Ask your question