Open space district
Fairfield OSC Zoning: Open Space/Conservation District
Open space and conservation district for environmentally sensitive areas or land identified by the General Plan as having significant open space value and not intended for active recreation.
4,045 ac
mapped in this district
15.3%
of Fairfield's districted land
12
governing sections
13
shared rules that apply
Where OSC's rules live
The district's own sections in Fairfield City Code, Chapter 25 (Zoning):
- §25.26
- §25.26.1
- §25.26.2
- §25.26.3
- §25.12.2
- Table 25-13
- Table 25-14
- §25.34
- §25.10.5
- §25.30.6
- §25.40.6
- §25.32.20
Shared rules that apply in OSC
Parking and loading §25.3428 of 28 districts
Measurements §25.5128 of 28 districts
Trash and recyclables enclosures §25.30.728 of 28 districts
Grading permit and off-site hauling review §25.24028 of 28 districts
Grading reports and geotechnical peer review §25.24328 of 28 districts
Development review for grading and building additions Table 25-1828 of 28 districts
Sign prohibitions and express exceptions §25.130928 of 28 districts
Existing legal lots and ordinance applicability §25.10.527 of 28 districts
Height exceptions, front-yard averaging and projections §25.30.627 of 28 districts
Conditional use permits for height and FAR §25.40.627 of 28 districts
Creekside protection / stream environment zone Article VIII14 of 28 districts
Agriculture and public benefit use permissions and notes Table 25-134 of 28 districts
Farm employee housing approvals and separations §25.32.202 of 28 districts
Other open space districts in Fairfield
Is your parcel in OSC? Check an address and ask what you can build, with the section behind each answer.
Check an addressSources: Fairfield City Code, Chapter 25 (Zoning); City of Fairfield “Zoning” layer, last edited Sep 16, 2026. Research only, not legal advice. Back to Fairfield zoning.