Tehama County Unincorporated Zoning Intelligence
Zoning, permitted uses, ADU rules, and development potential for Tehama County Unincorporated, California. 67 districts analyzed.
Explore Tehama County Unincorporated parcels, zoning, and hazards
Search any Tehama County Unincorporated address, inspect parcels and zoning on the live map, and ask the AI what you can build - right here.
How is Tehama County Unincorporated zoned?
Permitted uses vary by district. Search a Tehama County Unincorporated parcel on the map above to see exactly what you can build there.
- Total zoning districts67
- Commercial districts4
- Industrial districts6
Statewide law - applies to all California cities, not specific to Tehama County Unincorporated.
- California state ADU lawApplies statewide
- SB-9 lot split eligibilityPer parcel review
- SB-79 (transit-oriented housing)Near transit, from Jul 2026
- Density Bonus Law (state)Eligible projects
- Local impact / permittingVerify with Tehama County Unincorporated planning
What should developers know about Tehama County Unincorporated zoning?
Tehama County Unincorporated is defined by an immense agricultural and government land base across the northern Sacramento Valley. The four AG (Agricultural) districts alone cover over 1,028,000 acres combined - AG-1 at 740,119 acres, AG-2 at 267,938 acres, AG-3 at 7,410 acres, and AG-4 at 13,093 acres - making agriculture the overwhelming land use category by a vast margin. The GOV (Government) zone adds another 497,619 acres of federal and state lands, primarily national forests and public lands in the Coast Range and Cascade foothills. Together these designations establish Tehama County as a landscape-scale agricultural and natural resource county, with urban development confined to a narrow fringe around Red Bluff and Corning.
With 67 total zoning districts, the code is detailed despite the rural character - the low-density residential tier alone includes multiple R1-A-B variants with specific minimum lot-size suffixes (e.g., R1-A-B-10, R1-A-B-200, R1-A-B-435) that enforce rural lot minimums from a fraction of an acre up to 435 acres. The largest of these, R1-A-B-435 at 13,428 acres and R1-A-B-217 at 6,277 acres, ensure that new residential development in the rural fringe occurs only on large parcels compatible with agricultural surroundings. Commercial zones C-1 (135 acres) and C-2 (842 acres) plus Highway Commercial (HC, 821 acres) serve the corridor communities along Interstate 5 and State Route 99.
For developers, the key insight is that virtually all non-agricultural, non-government land in unincorporated Tehama County is either highway commercial, low-density residential with large minimum lots, or industrial. The 67-district structure means parcel-level due diligence is essential - the applicable R1-A-B suffix determines whether a rural residential parcel is subdivisible at all. This is pre-development intelligence, not legal advice - verify with the local planning department before acquisition.
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Try ArchiWise free →Tehama County Unincorporated, California Zoning Districts: What Do They Mean?
Zoning districts are areas regulated by specific laws that determine land use, building types, and development rules. Each district below shows its zone type and which uses it permits.
| Zone Code | Zone Type | Permitted Uses | Area |
|---|---|---|---|
AG-1 Agricultural | - | - | 740,118.9 ac |
AG-2 Agricultural | - | - | 267,938.3 ac |
AG-3 Agricultural | - | - | 7,409.8 ac |
AG-4 Agricultural | - | - | 13,093 ac |
What are the building controls in Tehama County Unincorporated?
Setback, height, FAR, lot area, and density controls enforced across Tehama County Unincorporated zoning districts.
- Assorted
- Far control
- Lot control
- Density control
- Coverage control
- Pervious control
- Lot width control
- Rear setback control
- Side setback control
- Front setback control
- Building height control
Cities near Tehama County Unincorporated
Tehama County Unincorporated zoning: frequently asked questions
What do the R1-A-B suffix designations mean for rural residential parcels in Tehama County?
The R1-A-B zones (Low Density Residential with minimum lot-size suffixes) encode the minimum parcel size in their code: R1-A-B-10 requires 10-acre minimums, R1-A-B-200 requires 200-acre minimums, and R1-A-B-435 requires 435-acre minimums. The R1-A-B-435 district alone covers 13,428 acres, meaning most of the county's rural residential land is regulated at very large lot sizes that preclude conventional subdivision. Developers must confirm the exact suffix applicable to their parcel and whether state law (SB-9, ADU) overrides any of these rural minimums.
What commercial opportunities exist along the Interstate 5 corridor?
Highway Commercial (HC) at 821 acres and C-2 General Commercial at 842 acres provide the primary commercial land base along I-5 and state highway corridors through communities like Corning, Gerber, and Proberta. These districts are positioned to serve truck stop, lodging, fast-casual dining, and regional retail demand from travelers and agricultural workers. C-1 Retail Business at 153 acres serves smaller community nodes. Developers should confirm access points and traffic impact requirements for specific corridor locations.
How much industrial land is available in unincorporated Tehama County?
The county designates M-1 Industrial (260 acres), M-1-H-25 Industrial (36 acres), M-1-S Industrial (49 acres), M-1-S-P Industrial (180 acres), M-2 Industrial (2,698 acres), and M-2-S-P Industrial (19 acres). M-2 at 2,698 acres is particularly notable for a rural county and reflects the presence of sawmill and resource-processing operations historically active in the region. The M-1-S and M-1-S-P suffixes likely encode site-specific standards from precise plans or special conditions.
What is the Nomlaki Tribe (NOMLKI) zone designation?
The NOMLKI zone at 2,252 acres designates lands associated with the Nomlaki Tribe, likely tribal trust or fee lands with special status. Development on or adjacent to tribal lands involves a separate regulatory framework including tribal consultation and potentially federal review. Private developers should treat NOMLKI-zoned parcels as outside the standard county entitlement process and consult legal counsel familiar with federal Indian land law before evaluating any transaction involving these areas.
Are Williamson Act contracts common on Tehama County agricultural land?
Yes - the vast agricultural base in Tehama County means Williamson Act contracts are widespread on AG-1 through AG-4 parcels. These contracts reduce property tax in exchange for a 10-year rolling commitment to agricultural use, and cancelling a contract triggers substantial penalties or a lengthy non-renewal period. The NR (Natural Resource) zone at 18,300 acres adds a separate layer of resource-protection zoning. Investors in agricultural land should obtain a preliminary title report and county assessor records to confirm contract status before assuming any flexibility in land use.
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Zoning data is pre-development intelligence, not legal advice. Verify with the Tehama County Unincorporated planning department before acquisition or design.