Lassen County — Land Use

Last reviewed: July 6, 2026

Overview

In unincorporated areas of Lassen County, land use is governed by Lassen County Code Title 18 (Zoning). Allowed uses are enumerated district-by-district; many districts also specify minimum parcel sizes and key dimensional standards such as setbacks and height. Combining and special-purpose districts can add extra rules on top of your base zoning, so always read the base district and any combining district together (Lassen County Zoning).

In unincorporated areas, what you can do with a parcel is determined by its mapped base zoning district plus any combining/overlay district; where a combining district applies (e.g., Floodplain “F”), you must meet both sets of rules, with Floodplain-specific standards in addition to your base zone’s standards (§ 18.88.050 ).

How to read Lassen County’s land-use rules

• District chapters list “Uses allowed by right,” “Uses allowed by use permit,” and (in some cases) “Uses by certificate of conditional use.” Cross-district allowances (e.g., B&Bs) also appear in countywide provisions (§ 18.102.030–.040 ).
• Some legacy districts remain mapped but are closed to new rezonings; if you are in one, the chapter still governs your site (e.g., C-1 and C-2 note “no lands shall be rezoned” going forward: § 18.36.090; § 18.38.090 ).
• Several districts require design review for specific building types (e.g., commercial/industrial in A-1, and all development in C-1/C-2/H) (§ 18.16.060(b) ; § 18.36.100; § 18.38.100; § 18.92.060 ).

Core Residential Districts

R-1 Single-Family Residential

• Purpose and where applied: Established single-family areas in unincorporated communities.
• Typical permitted uses: Not enumerated in retrieved excerpts. Verify with the jurisdiction.
• Key dimensional standards: The R-1 district sets a maximum building height of 25 ft for main buildings (up to 35 ft with design review), 35% site coverage, a 20 ft front setback (averaging allowed on improved blocks, minimum 15 ft), side yard equal to 10% of lot width (max 15 ft, can be reduced to 5 ft with design review), and a 20 ft rear yard (§ 18.22.050 ).
• Notes: Some parcels carry a “-B-D” combining, which modifies setbacks; see B-district standards below (§ 18.84.030–.040 ).

R-2 Limited Multiple-Family Residential

• Purpose: Adds duplex and small multi-unit options compatible with single-family neighborhoods (§ 18.24.010 ).
• Permitted uses: All R-1 uses (where permitted) plus duplexes and 3–4 unit buildings (§ 18.24.030 ).
• Use permit examples: Hospitals/rest homes, professional offices, mobile home parks (§ 18.24.040 ).
• Key standards: Similar to R-1—height 25/35 ft with design review, 35% coverage, 20 ft front, side yard = 10% lot width (max 15 ft, reducible to 5 ft with design review), 20 ft rear (§ 18.24.050 ).

R-3 Multiple-Family Residential

• Purpose: Higher-density residential areas allowing apartments and related uses (§ 18.26.010–.020 ).
• Permitted uses: All R-1/R-2 uses (as applicable) and multi-family up to 4 units by right (§ 18.26.030 ).
• Use permit examples: 5+ unit projects, group homes, clinics, mobile home parks (§ 18.26.040 ).
• Key standards: Height 45 ft, lot coverage 60%, 20 ft front, 5 ft side, 15 ft rear; special spacing rules for dwelling groups (§ 18.26.050 ).

Agricultural and Resource Districts

A-2 Agricultural Residential

• Purpose: Rural residential mixed with agriculture while protecting ag uses (§ 18.18.010–.020 ).
• By-right uses: One-family dwelling (incl. one noncommercial guest house) and general agricultural activities; kennels by right only on parcels ≥5 acres and after establishing a residence (§ 18.18.030 ).
• Certificate of conditional use: A second dwelling when the parcel is ≥2× the minimum parcel size (§ 18.18.035 ).
• Use permit examples: Country clubs/golf courses, kennels on smaller parcels or without residence, churches/schools/parks, guest ranches/public stables (§ 18.18.040 ).

A-1 Agricultural (legacy-mapped)

• Use permit examples include airports (exceptions noted), mining, cemeteries, feedlots, oil/gas, sawmills, mobile home/RV parks, and cross-adopted uses from other districts; “additional dwelling units” may be allowed by use permit (§ 18.16.050 ).
• Development standards: Typical minimum setbacks are 20 ft front, 5/10 ft sides, and 10/5 ft rear (depending on alley) (§ 18.16.060 ).
• Special: No new rezonings to A-1 are allowed; it applies only where already mapped (§ 18.16.070 ). Commercial/industrial structures require design review (§ 18.16.060(b) ).

E-A Exclusive Agricultural

• Purpose: Protects intensive agricultural production areas and supports agricultural preserves; prohibits residential subdivisions and non-specified commercial/industrial uses (§ 18.66.010 ).
• By-right: General agriculture; farm/ranch dwellings and farm labor housing; roadside stands; small hydro (≤5 MW); kennels after a residence is established (§ 18.66.030 ).
• Use permit: Poultry/fur/commercial hog farms; feedlots/dairies; ag processing; animal hospitals; commercial farm service airports; geothermal/oil/gas exploration; off-site power generation; larger hydro (>5 MW); kennels without residence (§ 18.66.040 ).
• Key standards: Minimum parcel size 100 acres; 20 ft front/side/rear yards (§ 18.66.050 ).

U-C Upland Conservation

• Purpose: Mountain/foothill areas emphasizing forestry, mining, grazing, watershed protection; often aligned with agricultural preserves (§ 18.68.010–.020 ).
• By-right: Farm/ranch dwellings; general agriculture and timber; private ag airstrips; small hydro; kennels after a residence is established (§ 18.68.030 ).
• Use permit list: Not found in retrieved materials.

O-S Open Space

• By-right (private ownership): Grazing (horses, cattle, sheep, goats) with limits; trails and roads; utility lines/pipes (not generation or yards); timber harvest; wildlife refuge; certain scientific study sites (§ 18.64.030 ).
• Use permit (private land): Water collection/storage/distribution facilities; roadside rest areas; sewage treatment facilities (§ 18.64.040 ).
• Area/parcel rules: Parcels in O-S have restrictions on division (limited exceptions for public conveyances) (§ 18.64.050 ).

F-R Forest Recreation

• Intent: Low-density, transitory forest recreation with resource protection in areas lacking year-round public services (§ 18.52.010–.020 ).
• By-right examples: Hunting/fishing/campgrounds without permanent habitation structures; logging/portable mills; pack stations (§ 18.52.030 ).

Commercial, Resort, and Mixed-Use Districts

C-1 Commercial (legacy-mapped)

• Dimensional standards: Height up to 45 ft; no front/side yard generally (exceptions near residential); 12 ft rear (or 5 ft at alleys) (§ 18.36.040–.080 ).
• Programmatic notes: Design review required; no new rezonings to C-1 going forward (§ 18.36.090–.100 ).
• Parking/landscaping: Uncovered lots with 16+ spaces require one tree per eight spaces (§ 18.36.110 ; also see Lassen County Parking).

C-2 General Commercial (legacy-mapped)

• Dimensional standards: Height 20 ft; minimum lot width 20 ft; generally no front/side yards (R-adjacencies modify); 12 ft rear (or 5 ft at alleys) (§ 18.38.040–.080 ).
• Programmatic notes: Design review required; no new rezonings to C-2 (§ 18.38.090–.100 ).
• Parking/landscaping: One tree per eight spaces in uncovered lots with 16+ spaces (§ 18.38.110 ).

B-P Business Park

• Intent: Light manufacturing, R&D, warehousing and compatible offices; avoids high-impact byproducts (§ 18.39.010–.020 ).
• By-right: Offices; labs; R&D; warehousing/distribution; classrooms/studios; printing; light manufacturing/assembly; wholesale; repair/maintenance; retail tied to production/warehousing; bottling/breweries; indoor sports; day care; plus “similar” uses determined by the Planning Director (§ 18.39.030 ).
• Use permit list: Not found in retrieved materials.

H District

• Allowed uses (illustrative): Motels, RV parks and campgrounds; auto service stations; restaurants, refreshment stands, real estate offices (uses section number not visible in retrieved excerpt; verify with the jurisdiction).
• Development standards: Height up to 35 ft; front yard for dwellings/hotels/motels 30 ft; side/rear yards same as R-1; design review applies (§ 18.92.050–.060 ).

R-S District

• By-right examples: Small retail and convenience stores, bars/taverns/restaurants, curio shops, dancehalls (§ 18.54.030 ).
• Use permit: Fuel sales/service, marine-related service/rentals, RV parks/campgrounds, residence with a business, and certain recreational facilities (§ 18.54.040 ).

M-R Mountain Resort

• Purpose: Four-season resort-oriented mixed use; voter-adopted district implementing the Dyer Mountain initiative (§ 18.55.010–.020; § 18.142.020–.030 summary/excerpts ).
• By-right uses include: Broad lodging/housing types (including timeshares), mixed-use buildings, retail and food/beverage, offices, limited industrial support (e.g., laundries, delivery, artisan studios), convention centers, fueling/service, marine-related services, RV parks/campgrounds, residence with business/home office, kennels after residence, extensive recreation facilities, entertainment, day care, public/quasi-public uses, timber/ watershed/ habitat management, utilities/communications, transit centers, grazing, and similar compatible uses determined by the Community Development Director (§ 18.55.030–.040 ).

Combining and Special-Purpose Districts

F Floodplain (Combining)

• Use permit: Public recreation facilities, feedlots/dairies, mining/excavation, flood-control structures, buildings/mobile homes/storage of >500 gal petroleum (if allowed by base zone), energy generation, resource exploration (§ 18.88.040 ).
• Development standards: Either elevate finished floors 1 ft above floodplain on an engineered pad or provide approved flood-protection works; protect sewage and water supplies from floodwaters (§ 18.88.050 ).

G Geothermal (Combining)

• Intent: Facilitate orderly geothermal development in KGRAs with monitoring and resource protection (§ 18.90.010–.020 ).

A-P Agricultural Preserve (Combining)

• Adds Williamson Act-compatible use controls to base zoning; uses within contract areas may include those listed in the contract as “compatible with agriculture” (§ 18.82.010–.030 ).

A Agricultural (Combining)

• By-right: Uses of the base district, plus animal husbandry within prescribed animal density limits and crop/tree farming (§ 18.80.020 ).
• Use permit: Kennels on parcels ≥5 acres, on-site sales of products, commercial poultry (§ 18.80.030 ).
• Standards: Structure setbacks for ag accessory buildings and minimum lot area per large animal (§ 18.80.040 ).

B Building Site (Combining)

• Replaces underlying site area and some yard standards with -B figures; “-B-D” mapped areas include specific setback matrices by residential district (e.g., R-1-B-D and R-2-B-D front 20 ft, side 5/10 ft corner, rear 5 ft) (§ 18.84.010–.040 ).
• Density option procedures allow creative parcel maps while not exceeding base density (§ 18.84.060 ).

NH Natural Habitat (Combining)

• Intent: Protect recognized wildlife habitat areas per the General Plan while maximizing reasonable property use (§ 18.94.010 ).

Cross-district provisions you’ll see often

• Bed & breakfasts are allowed in residential, commercial, agricultural, E‑A, U‑C and U‑C‑2 zones with a certificate of conditional use on parcels ≥5 acres (or a use permit if <5 acres or more than 5 guest rooms), and must meet the specific operating conditions in § 18.102.030(c) .
• Height exceptions (e.g., for chimneys/towers/appurtenances) can be allowed with a use permit (§ 18.102.040(a) ).
• Cannabis dispensaries are limited to commercial and industrial districts and require a use permit, along with state licensure and county authorization steps (§ 18.108.045 ).
• Parking, screening, and landscaping frequently cross-reference countywide standards; for instance, large uncovered lots must provide tree planting in several commercial chapters, and industrial districts reference Parking standards (§ 18.36.110; § 18.38.110; see also M/M-2 chapters and § 18.104 cross-references ).

Quick-Glance Uses and Standards (selected districts)

Process and Practical Tips

• Many commercial/industrial projects trigger design review in addition to zoning compliance (§ 18.16.060(b); § 18.36.100; § 18.38.100; § 18.92.060 ).
• B&Bs and some “selected district uses” (e.g., public parking lots, quasi-public buildings) are handled through the cross-district process in § 18.102.030; read those rules alongside your base zone (§ 18.102.030(c) ).
• If your parcel sits in a combining district (e.g., F, A-P, G, B, NH), treat those rules as additional layers that may narrow or condition otherwise-allowed base-zone uses (§ 18.88.050; § 18.82.030; § 18.90.010; § 18.84.010; § 18.94.010 ).
• Landscaping/screening and large-lot parking trees appear repeatedly; check your chapter’s references to countywide standards (§ 18.36.110; § 18.38.110 ; see also Lassen County Landscaping and Screening).

Checklist

• Confirm your parcel is in the unincorporated area and identify its base zoning and any combining/overlay districts (Lassen County Overlay Districts).
• Read “Uses allowed by right” and “Uses allowed by use permit” for your base district; note any cross-district allowances in § 18.102.030 (e.g., bed & breakfast) (§ 18.102.030(c) ).
• Verify minimum parcel size and key dimensional standards (setbacks, height, coverage) in your chapter (e.g., R-1 § 18.22.050, E‑A § 18.66.050) .
• Check if design review is required for your use/type of building (e.g., commercial/industrial in A‑1; all development in C‑1/C‑2/H) (§ 18.16.060(b); § 18.36.100; § 18.38.100; § 18.92.060 ).
• Confirm parking and landscaping triggers (e.g., tree planting in large uncovered parking lots) (§ 18.36.110; § 18.38.110 ).
• If in F Floodplain (Combining), design to the flood protection standard (§ 18.88.050 ).
• If your mapped district is legacy (e.g., A‑1, C‑1, C‑2), note it still governs your site even though new rezonings are not allowed (§ 18.16.070; § 18.36.090; § 18.38.090 ).
• If your plan deviates from by-right uses or standards, discuss variances/exceptions or a use permit strategy early with Planning.

Risks & Ambiguities

Plain-English Summary

If your property is in unincorporated Lassen County, start with your zoning map label. The chapter for that district tells you what’s allowed by right and what needs a use permit, plus basics like setbacks and height. Then check for any combining overlays (like Floodplain “F”) that add extra rules. Commercial and industrial buildings often need design review, and larger parking lots have tree-planting requirements. Questions about ADUs or state housing rules live on separate pages (California ADU law; California housing laws). Building code compliance is also separate (California Building Standards Code).

Source References

• R-1 standards: § 18.22.050
• R-2 uses/standards: § 18.24.030–.050
• R-3 uses/standards: § 18.26.030–.050
• A-1 uses/standards/rezoning: § 18.16.050–.070
• A-2 uses/permits: § 18.18.030–.040
• E-A uses/permits/standards: § 18.66.030–.050
• U-C uses: § 18.68.030
• O-S uses/area: § 18.64.030–.050
• F-R uses: § 18.52.030
• C-1 standards/review/rezoning: § 18.36.040–.110
• C-2 standards/review/rezoning: § 18.38.040–.110
• B-P intent/uses: § 18.39.010–.040
• H standards/review: § 18.92.050–.060
• R-S uses: § 18.54.030–.040
• M-R purpose/uses; Dyer Mountain initiative: § 18.55.010–.040; § 18.142.020–.030 (excerpts)
• F combining uses/standards: § 18.88.040–.050
• A-P combining: § 18.82.010–.030
• A combining: § 18.80.020–.040
• B combining: § 18.84.010–.040, .060
• NH combining intent: § 18.94.010
• Cross-district B&B and selected uses; height exceptions: § 18.102.030–.040
• Cannabis dispensaries (zoning districts, permits, licensing): § 18.108.045

Information Gaps

• Full permitted-use lists for several districts (e.g., R-1, U-C use permits, B-P use permits, M/M‑2 detailed uses) were not present in the retrieved excerpts. Not found in retrieved materials.
• Titles of some newer commercial districts referenced (e.g., “C‑G” in § 18.33.050) and the chapter title for § 18.33 were not visible. Verify with the jurisdiction.
• Some “H” and “R‑S” chapter section numbers for the specific “uses permitted by right” headings were not visible. Verify with the jurisdiction.

Retrieved passages

• Lassen County Zoning Code (§ 70) High relevance show source text
• Lassen County Zoning Code (§ 39) High relevance show source text
• CBC § 61 (§ 61) High relevance show source text
• Lassen County Zoning Code (§ 18.16.050.) High relevance show source text
• Lassen County Zoning Code (§ 58) High relevance show source text
• Lassen County Zoning Code (§ 24) High relevance show source text
• Lassen County Zoning Code (§ 18.55.030.) High relevance show source text
• Lassen County Zoning Code (§ 58) High relevance show source text
• Lassen County Zoning Code (§ 70) High relevance show source text
• Lassen County Zoning Code (§ 18) Medium relevance show source text
• Lassen County Zoning Code (§ 19) Medium relevance show source text
• Lassen County Zoning Code (§ 18.26.010.) Medium relevance show source text
• Lassen County Zoning Code (§ 18.66.040.) Medium relevance show source text

Cited sections

• R-1 standards: § 18.22.050 (§ 18.22.050)
• R-2 uses/standards: § 18.24.030–.050 (§ 18.24.030)
• R-3 uses/standards: § 18.26.030–.050 (§ 18.26.030)
• A-1 uses/standards/rezoning: § 18.16.050–.070 (§ 18.16.050)
• A-2 uses/permits: § 18.18.030–.040 (§ 18.18.030)
• E-A uses/permits/standards: § 18.66.030–.050 (§ 18.66.030)
• U-C uses: § 18.68.030 (§ 18.68.030)
• O-S uses/area: § 18.64.030–.050 (§ 18.64.030)
• F-R uses: § 18.52.030 (§ 18.52.030)
• C-1 standards/review/rezoning: § 18.36.040–.110 (§ 18.36.040)
• C-2 standards/review/rezoning: § 18.38.040–.110 (§ 18.38.040)
• B-P intent/uses: § 18.39.010–.040 (§ 18.39.010)
• H standards/review: § 18.92.050–.060 (§ 18.92.050)
• R-S uses: § 18.54.030–.040 (§ 18.54.030)
• M-R purpose/uses; Dyer Mountain initiative: § 18.55.010–.040; § 18.142.020–.030 (excerpts) (§ 18.55.010)
• F combining uses/standards: § 18.88.040–.050 (§ 18.88.040)
• A-P combining: § 18.82.010–.030 (§ 18.82.010)
• A combining: § 18.80.020–.040 (§ 18.80.020)
• B combining: § 18.84.010–.040, .060 (§ 18.84.010)
• NH combining intent: § 18.94.010 (§ 18.94.010)
• Cross-district B&B and selected uses; height exceptions: § 18.102.030–.040 (§ 18.102.030)
• Cannabis dispensaries (zoning districts, permits, licensing): § 18.108.045 (§ 18.108.045)
• LassenCounty_ZoningCode.md

• Official Lassen County code library