San Bernardino County · Zoning · CO
San Bernardino County CO zoning: height, setbacks and lot size
In San Bernardino County's CO zone, generally buildings can be up to 60 ft tall and the front setback is 25 ft, with the conditions listed below (San Bernardino County code, read October 2026).
Key points
- Maximum building height: 60 ft (Valley Region; 35 ft in the Mountain Region.)
- Minimum front setback: 25 ft (Valley Region; 15 ft in the Mountain Region.)
- Minimum side setback: 10 ft
- Minimum rear setback: 10 ft
- Maximum lot coverage: 80%
- Maximum floor area ratio (FAR): 0.75 (Valley Region; .5:1 in the Mountain Region.)
CO (Office Commercial) is a zoning district in San Bernardino County. Every value below was read from the San Bernardino County 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 CO
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 | 60 ft Applies: Valley Region; 35 ft in the Mountain Region. § 82.05.060 · code textTable row “Maximum height”, column “CO Office Commercial”: 60 ft. |
|---|---|
| Minimum front setback | 25 ft Applies: Valley Region; 15 ft in the Mountain Region. § 82.05.060 · code textTable row “Front”, column “CO Office Commercial”: 25 ft. |
| Minimum side setback | 10 ft See note 1 below the table in the code. § 82.05.060 · code textTable row “Side - Interior (each)”, column “CO Office Commercial”: 10 ft. (1) Note 1: Only one side yard setback is required to provide for emergency access. If the adjacent lot is not designated commercial or industrial, a side yard shall be required along that side of the lot. |
| Minimum rear setback | 10 ft See note 2 below the table in the code. § 82.05.060 · code textTable row “Rear”, column “CO Office Commercial”: 10 ft. (2) Note 2: A rear yard setback is required only when the adjacent property is not designated commercial or industrial. |
| Maximum lot coverage | 80% § 82.05.060 · code textTable row “Maximum coverage”, column “CO Office Commercial”: 80 percent |
| Maximum floor area ratio (FAR) | 0.75 Applies: Valley Region; .5:1 in the Mountain Region. § 82.05.060 · code textTable row “Maximum FAR”, column “CO Office Commercial”: .75:1 |
Uses in CO
Uses the code's use tables allow in CO, or allow with a permit. Each links to its page with the code section.
- Child care center — Needs a minor use permit (conditional use permit if the project does not qualify for a minor use permit)
- Church or place of worship — Needs a conditional use permit
Not on this page
We did not find a general stories, lot size, density limit for CO in the zoning tables we read. The code may still set one elsewhere — check the San Bernardino County Municipal Code.
Other San Bernardino County zoning districts
Who this affects
Frequently asked questions
What is the maximum building height in San Bernardino County's CO zone?
60 ft (valley Region; 35 ft in the Mountain Region) — San Bernardino County Municipal Code § 82.05.060.
What is the minimum front setback in San Bernardino County's CO zone?
25 ft (valley Region; 15 ft in the Mountain Region) — San Bernardino County Municipal Code § 82.05.060.
What is the minimum side setback in San Bernardino County's CO zone?
10 ft — San Bernardino County Municipal Code § 82.05.060.
What is the minimum rear setback in San Bernardino County's CO zone?
10 ft — San Bernardino County Municipal Code § 82.05.060.
What is the maximum lot coverage in San Bernardino County's CO zone?
80% — San Bernardino County Municipal Code § 82.05.060.
General information, not legal advice.
Ask about a San Bernardino County property in CO
Ask GoCodebook what you can build at a specific address and get an answer that cites the section.
Ask your question