Local zoning · Plumas County

Plumas County — Development Standards

Development Standards under the Plumas County local zoning and planning code, with the controlling citations.

Last reviewed: July 6, 2026

Overview

This page distills the day-to-day dimensional and site development rules that apply in the unincorporated areas of Plumas County under the county’s zoning regulations in Plumas County Code, Title 9 (Planning and Zoning). Standards below come from the county’s zoning districts and general requirements, and are enforced at zoning clearance and during project review. For use allowances by district, see the related Plumas County Land Use and Plumas County Zoning pages; parking, signage, landscaping, and similar cross-cutting rules are summarized here and linked out for details.

Most districts in unincorporated Plumas County cap height at 35 ft for dwellings and set a baseline front setback of 20 ft; side/rear yards are commonly 5 ft per story unless a district sets “none” or requires more next to residential property. See the district’s § citation before you design.

Countywide development rules you’ll see referenced often

Parking: provided per the county’s general parking standards in § 9-2.414 (called out in each district’s parking section) — see Plumas County Parking for strategies.
Signage: most zones defer to the county’s sign standards in § 9-2.416; also see Plumas County Signage.
Landscaping: commercial/industrial projects often trigger landscaping under § 9-2.410 and the county’s Water Efficient Landscape Article — see Plumas County Landscaping and Screening.
Yards in wildfire interface: the General Requirements: Yards can supersede base setbacks on parcels in wildfire Local Responsibility Areas (e.g., side/rear 30 ft unless an exception method is met), referenced countywide as § 9-2.419; confirm the applicable yard provisions early.
ADUs: Article 45 sets countywide Accessory Dwelling Unit development standards (e.g., 4 ft side/rear setbacks; an 800 sf “statewide exemption ADU” cannot be precluded by lot coverage/FAR/min-lot-size) — see also California ADU law. § 9-2.4504; § 9-2.4506

Quick comparison of common dimensional standards (selected districts)

District	Max Height	Front Setback	Side/Rear Setback	Lot Coverage (max)	Minimum Lot Area	Code Reference
2-R (Single-Family)	35 ft	20 ft	5 ft per story	50%	0.5 acre	§ 9-2.1303; § 9-2.1305; § 9-2.1304
3-R (Single-Family)	35 ft	20 ft	5 ft per story	50%	1/3 acre	§ 9-2.1303; § 9-2.1305; § 9-2.1304
7-R (Single-Family)	35 ft	20 ft	5 ft per story	50%	1/7 acre	§ 9-2.1303; § 9-2.1305; § 9-2.1304
M-R (Multi-Family)	35 ft	None	5 ft per story	50%	6,000 sf	§ 9-2.1403; § 9-2.1405; § 9-2.1404
S-1 (Suburban)	35 ft	20 ft	5 ft per story	50%	1 acre	§ 9-2.1503; § 9-2.1505; § 9-2.1504
S-3 (Secondary Suburban)	35 ft	20 ft	5 ft per story	50%	3 acres (gross)	§ 9-2.1603–1605
R-10 (Rural)	35 ft	20 ft	5 ft per story	50%	10 acres (gross)	§ 9-2.1703–1705
R-20 (Rural)	35 ft	20 ft	5 ft per story	—	20 acres (gross)	§ 9-2.1803–1805
C-1 (Core Commercial)	35 ft	None	None; 10 ft if next to res.	—	2,000 sf	§ 9-2.1903–1905
C-2 (Periphery Commercial)	40 ft (35 ft dwellings)	None; 10 ft if next to res.	None; 10 ft if next to res.	70%	2,000 sf	§ 9-2.2003–2005
C-3 (Convenience Commercial)	40 ft (35 ft dwellings)	None; 10 ft if next to res.	None; 10 ft if next to res.	50%	8,500 sf	§ 9-2.2103–2105
R-C (Recreation Commercial)	35 ft	20 ft	5 ft; 10 ft if next to res.	70%	8,500 sf	§ 9-2.2203–2205
I-1 (Heavy Industrial)	—	20 ft	None; 10 ft if next to res.	70%	10,000 sf	§ 9-2.2505; § 9-2.2504
I-2 (Light Industrial)	75 ft (125 ft timber prod.); 35 ft dwellings	None; 10 ft if next to res.	None; 10 ft if next to res.	70%	10,000 sf	§ 9-2.2603–2605
GA (General Agriculture)	60 ft (35 ft dwellings)	≥20 ft	≥5 ft	1 acre per dwelling/misc. use	40 acres (gross)	§ 9-2.3103–3105
GF (General Forest)	60 ft (35 ft dwellings)	≥20 ft	≥5 ft	1 acre per structure	40 acres (gross)	§ 9-2.3303–3305
M (Mining)	100 ft (35 ft dwellings)	20 ft	5 ft	70% (1-acre cap per dwelling)	10 acres (gross)	§ 9-2.3403–3405
Rec-OS (Recreation-Open Space)	35 ft	20 ft	5 ft; 10 ft if next to res.	10%	8,500 sf	§ 9-2.2403–2405

Notes:

Many agricultural/forest/rural zones cap the building footprint of each dwelling and accessory buildings to “no more than one acre,” functioning as an effective coverage limiter for dwellings even where district coverage is otherwise higher. See § 9-2.1704(c), § 9-2.1804(c), § 9-2.3004(d), § 9-2.3104(d), § 9-2.3304(d).
Floor Area Ratio (FAR): Not found in retrieved materials for standard zoning districts.

District-by-district development standards (unincorporated areas)

2-R (Single-Family Residential)

Purpose/uses: One dwelling is permitted; a second detached dwelling is allowed on parcels with at least double the minimum lot area; ADUs are allowed per Article 45. § 9-2.1302
Key standards: 35 ft height; 20 ft front; 5 ft/story side/rear; 50% lot coverage; 0.5 acre min lot; 60 ft min width. § 9-2.1303–1305
Where it applies: Established single-family neighborhoods in unincorporated areas near communities.

3-R (Single-Family Residential)

Uses: Same framework as 2-R; ADUs per Article 45. § 9-2.1302
Standards: 35 ft height; 20 ft front; 5 ft/story side/rear; 50% coverage; 1/3 acre min lot; 60 ft width. § 9-2.1303–1305
Context: Single-family areas with moderate lot sizes.

7-R (Single-Family Residential)

Uses: Same framework as 2-R; ADUs per Article 45. § 9-2.1302
Standards: 35 ft height; 20 ft front; 5 ft/story side/rear; 50% coverage; 1/7 acre min lot; 60 ft width. § 9-2.1303–1305
Context: Smaller-lot single-family areas in unincorporated communities.

M-R (Multiple-Family Residential)

Purpose/uses: Multifamily housing; specific use list Not found in retrieved materials.
Standards: 35 ft height; front setback: none; 5 ft/story side/rear; 50% coverage; 6,000 sf lot; 60 ft width. § 9-2.1403–1405
Context: Higher-density residential pockets in unincorporated areas.

S-1 (Suburban)

Purpose: One unit per 1–3 acres typical. § 9-2.1501
Standards: 35 ft height; 20 ft front; 5 ft/story side/rear; 50% coverage; 1 acre min lot; 120 ft width; each dwelling + accessory buildings may cover no more than one acre. § 9-2.1503–1505
Context: Semi-rural residential edges of unincorporated communities.

S-3 (Secondary Suburban)

Purpose: 3–10 acres per dwelling typical. § 9-2.1601
Standards: 35 ft height; 20 ft front; 5 ft/story side/rear; 50% coverage; 3 acres min lot (gross); 150 ft width; each dwelling + accessory buildings may cover ≤1 acre. § 9-2.1603–1605
Context: Low-density, rural-residential settings.

R-10 (Rural)

Uses: Range of rural-residential and compatible uses; ADUs per Article 45. Example list includes home businesses and agricultural uses. § 9-2.1702 (uses detail retrieved in part)
Standards: 35 ft height; 20 ft front; 5 ft/story side/rear; 50% coverage with ≤1 acre per dwelling/acc. buildings; 10 acres min lot (gross); 300 ft width. § 9-2.1703–1705
Context: Rural lands with scattered development.

R-20 (Rural)

Purpose: 20 acres per dwelling typical. § 9-2.1801
Standards: 35 ft height; 20 ft front; 5 ft/story side/rear; ≤1 acre per dwelling/acc. buildings; 20 acres min lot (gross); 300 ft width. § 9-2.1803–1805
Context: Very low-density rural holdings.

C-1 (Core Commercial)

Uses: Pedestrian-oriented commercial; limited on-site residential above or behind commercial is allowed; ADUs allowed. § 9-2.1902
Standards: 35 ft height; no front/side/rear setback (except 10 ft where adjoining residential). Minimum lot 2,000 sf; no off-street parking required for commercial uses; residential/lodging parking per § 9-2.414. § 9-2.1903–1906
Context: Commercial main streets in unincorporated town centers; may be subject to Plumas County Design Review or Overlay Districts where mapped.

C-2 (Periphery Commercial)

Purpose: Major commercial near population centers with adequate access/parking; residential on rear half by planned development permit. § 9-2.2001; § 9-2.2002(c)
Standards: 40 ft height (dwellings 35 ft); no front/side/rear setbacks except 10 ft next to residential; 70% coverage; 2,000 sf min lot; landscaping per § 9-2.410; parking per § 9-2.414. § 9-2.2003–2008
Context: Highway corridors and edge commercial in unincorporated areas.

C-3 (Convenience Commercial)

Uses: Neighborhood-serving commercial, some services; limited residential allowed with commercial. § 9-2.2102
Standards: 40 ft height (dwellings 35 ft); no setbacks except 10 ft next to residential; 50% coverage; 8,500 sf min lot. § 9-2.2103–2105
Context: Smaller, roadside commercial nodes.

R-C (Recreation Commercial)

Uses: Commercial uses supporting recreation; telecom subject to Article 41. § 9-2.2202; § 9-2.2202(d)
Standards: 35 ft height; 20 ft front; 5 ft side/rear, or 10 ft next to residential; 70% coverage; 8,500 sf min lot. § 9-2.2203–2205
Context: Marinas, resorts, and recreation-serving centers.

Rec-P (Prime Recreation)

Standards: 35 ft height; 20 ft front; 5/10 ft side/rear rule as above; 70% coverage; 8,500 sf min lot; 60 ft width. § 9-2.2303–2305
Context: Prime recreation sites in unincorporated areas.

Rec-1 (Recreation, 1-acre)

Standards: 35 ft height; 20 ft front; 5/10 ft side/rear; 70% coverage; 1 acre min lot; 120 ft width. § 9-2.2303–2305
Context: Large-lot recreation properties.

Rec-3 (Recreation, 3-acre)

Standards: 35 ft height; 20 ft front; 5/10 ft side/rear; 70% coverage; 3 acres min lot (gross); 150 ft width. § 9-2.2303–2305
Context: Rural recreation lands.

Rec-10 (Recreation, 10-acre)

Standards: 35 ft height; 20 ft front; 5/10 ft side/rear; 70% coverage; 10 acres min lot (gross); 300 ft width. § 9-2.2303–2305
Context: Extensive recreation tracts.

Rec-20 (Recreation, 20-acre)

Standards: As Rec-10 but 20 acres min lot (gross) and 300 ft width. § 9-2.2303–2305
Context: Large resource/recreation holdings.

Rec-OS (Recreation–Open Space)

Uses: Open space, recreation, cemeteries. § 9-2.2401–2402
Standards: 35 ft height; 20 ft front; 5/10 ft side/rear; 10% coverage; 8,500 sf min lot; 60 ft width. § 9-2.2403–2405
Context: Open space sites in unincorporated areas.

GA (General Agriculture)

Uses: Agriculture plus one dwelling; ADUs allowed; some resource and utility uses by permit. § 9-2.3102–3104 (uses partially retrieved)
Standards: 60 ft max height (dwellings 35 ft); ≥20 ft front; ≥5 ft side/rear; 40 acres min lot (gross); 300 ft width; 1 acre max coverage per dwelling and per misc. compatible use. § 9-2.3103–3105
Context: Working agricultural lands.

AP (Agricultural Preserve)

Uses: Agriculture and compatible uses; misc. recreation/auction uses by permit. § 9-2.3002–3004 (uses partial)
Standards: 60 ft max height (dwellings 35 ft); 80 acres min lot (gross) generally; 10 acres if solely an agricultural auction yard with no dwelling; 1 acre max coverage per dwelling and per misc. compatible use. Yards: Not found in retrieved materials. § 9-2.3003–3005
Context: Williamson Act–type preserve lands in the unincorporated county.

GF (General Forest)

Uses: Timber management, agriculture; one dwelling (two on 80+ acres); ADUs allowed; specified resource/utility by permit. § 9-2.3302
Standards: 60 ft max height (dwellings 35 ft); ≥20 ft front; ≥5 ft side/rear; 40 acres min lot (gross); 300 ft width; 1 acre coverage cap per structure. § 9-2.3303–3305
Context: Forest-production lands outside TPZ.

TPZ (Timberland Production Zone)

Uses: Timber and compatible uses; development tightly limited. § 9-2.3201–3202
Standards: Yard minima mirror other resource zones; each dwelling/structure may cover ≤1 acre. § 9-2.3206.5–3207
Context: State-designated timberlands in unincorporated areas.

M (Mining)

Uses: Mining and related activities; dwellings permitted with stricter coverage; telecom facilities addressed countywide. § 9-2.3402–3406 (uses/standards partially retrieved)
Standards: 100 ft max height (dwellings 35 ft); 20 ft front; 5 ft side/rear; 70% coverage (≤1 acre per dwelling); 10 acres min lot; 300 ft width. § 9-2.3403–3405
Context: Mineral resource areas in the unincorporated county.

Accessory Dwelling Units (applies in any residentially zoned lot with a primary dwelling)

County standards:
- Guaranteed allowance for a “statewide exemption ADU” up to 800 sf, 16 ft tall, 4 ft side/rear setbacks; cannot be denied for lot coverage, FAR, open space, or min lot area limits. § 9-2.4504(b)
- General sizes: attached up to the greater of 800 sf or 50% of the primary (capped at 1,200 sf); detached up to 1,200 sf; height up to 35 ft (local cap). § 9-2.4504(c)–(d)
- Setbacks: 4 ft side/rear; front setbacks cannot block an 800 sf ADU; conversions to ADUs may have no setbacks. § 9-2.4504(e)
- Parking: one space unless an exemption applies; tandem/setback parking allowed when required. § 9-2.4506; see Plumas County Parking.
State overlay: State law reinforces the 800 sf/4 ft standards and limits local FAR/coverage constraints; see California housing laws and California ADU law. Not a substitute for local code, but it controls conflicts.

Telecom and special facility siting basics (cross-district)

Setbacks above the base zoning may apply (e.g., one foot of roof setback per foot of facility height; ground towers: height plus 25 ft from property lines), with placement limits for accessory buildings. § 9-2.4108–4109
Projects near scenic/historic overlays may face added scrutiny — see Plumas County Overlay Districts and Plumas County Historic Preservation.

Checklist

Confirm your parcel’s zoning district(s) in unincorporated Plumas County and any Overlay Districts.
Design to the district’s height, setbacks, lot area/width, and coverage limits; check resource/wildfire yard rules referenced in § 9-2.419.
If proposing mixed-use or residential in commercial zones, apply adjacency setbacks (10 ft next to residential where required). See C-1/C-2/C-3 tables above.
Provide parking per § 9-2.414 and applicable zone notes; confirm any shared/waiver options via Plumas County Parking.
If adding an ADU, apply Article 45 standards, especially the 800 sf/4 ft “statewide exemption” and any local height cap. § 9-2.4504; § 9-2.4506
Check Plumas County Design Review if your community or overlay requires it; verify with the jurisdiction.
Keep signage and landscaping consistent with § 9-2.416 and § 9-2.410; coordinate with Plumas County Signage and Landscaping and Screening.
For existing nonconforming conditions, see Plumas County Nonconforming Uses; consider Plumas County Variances and Exceptions if relief is warranted.

Risks & Ambiguities

Issue	Why it matters	What to verify
Wildfire yard overlays vs. base setbacks	Parcels in wildfire Local Responsibility Areas can trigger larger side/rear yards than the base district.	Whether § 9-2.419 yard adjustments apply on your parcel and which exception method qualifies.
Commercial next to residential	C-1/C-2/C-3 often require 10 ft yard when abutting residential.	If any residential zoning abuts your site; measure from the correct property line. § 9-2.1905; § 9-2.2005; § 9-2.2105
Coverage in resource zones	“1-acre per dwelling/structure” caps can bind site planning even on large lots.	Which coverage cap applies in your zone (AP/GA/GF/R-10/R-20/TPZ). § 9-2.1704(c); § 9-2.1804(c); § 9-2.3004(d); § 9-2.3104(d); § 9-2.3304(d); § 9-2.3206.5
ADU interplay with local metrics	State-protected 800 sf/4 ft ADU can override lot coverage/FAR/min-lot constraints.	Apply § 9-2.4504 and state protections; check parking exceptions in § 9-2.4506.
FAR standards	Some cities use FAR; Plumas County districts generally do not.	FAR: Not found in retrieved materials; design to coverage/height/setback instead.

Plain-English Summary

If you’re building in unincorporated Plumas County, first find your zoning, then design to its height, lot size/width, setbacks, and coverage. Most homes top out at 35 ft with a 20 ft front yard, but commercial main streets can build to the lot line (with 10 ft buffers next to homes). Rural/resource zones use big minimum lots and a 1-acre building footprint cap per dwelling. ADUs have special, more permissive rules that allow at least an 800 sf unit with 4 ft side/rear setbacks countywide. For structural design and safety, refer to the California Building Standards Code.

Source References

Plumas County Code, Title 9 (Planning and Zoning): Single-Family Residential (2-R/3-R/7-R) — § 9-2.1302–1307
Multiple-Family Residential (M-R) — § 9-2.1403–1407
Suburban (S-1) — § 9-2.1503–1507; Secondary Suburban (S-3) — § 9-2.1603–1607
Rural (R-10, R-20) — § 9-2.1703–1707; § 9-2.1803–1807
Core, Periphery, Convenience Commercial (C-1/C-2/C-3) — § 9-2.1902–1907; § 9-2.2001–2008; § 9-2.2102–2107
Recreation Commercial (R-C) — § 9-2.2203–2207; Recreation zones (Rec-P/1/3/10/20) — § 9-2.2303–2307; Recreation–Open Space (Rec-OS) — § 9-2.2403–2405
General Agriculture (GA) — § 9-2.3103–3107; Agricultural Preserve (AP) — § 9-2.3003–3005; General Forest (GF) — § 9-2.3303–3307; Timberland Production (TPZ) — § 9-2.3206.5–3207; Mining (M) — § 9-2.3403–3406
General Requirements (selected): Landscaping § 9-2.410; Parking § 9-2.414; Yards reference § 9-2.419 (wildfire area modifications).
ADUs (Article 45): § 9-2.4504 development standards; § 9-2.4506 parking. State ADU protections summarized from HCD 2025 guidance.
See overview navigation: Plumas County zoning & planning overview

Sources

Retrieved passages

Plumas County Zoning Code (§ 3) High relevance
Plumas County Zoning Code (§ 3) High relevance
Plumas County Zoning Code (§ 3) High relevance
Plumas County Zoning Code (§ 3) High relevance
CBC § 66314 (§ 66314) High relevance
Plumas County Zoning Code (Section 65850.6) High relevance
Plumas County Zoning Code (Section 9-2.4105) High relevance
Plumas County Zoning Code (§ 1) High relevance
Plumas County Zoning Code (§ 3) High relevance
Plumas County Zoning Code (§ 3) High relevance
Plumas County Zoning Code (§ 3) High relevance
Plumas County Zoning Code (§ 3) High relevance
Plumas County Zoning Code (§ 3) High relevance
Plumas County Zoning Code (§ 1) High relevance
Plumas County Zoning Code (§ 3) High relevance
Plumas County Zoning Code (§ 3) High relevance
Plumas County Zoning Code (§ 3) High relevance
Plumas County Zoning Code (Section 9-) High relevance
Plumas County Zoning Code (Section 9-) High relevance
Plumas County Zoning Code (§ 3) High relevance
Plumas County Zoning Code (§ 3) High relevance

Cited sections

Official Plumas County code library

Frequently asked questions

What can I build on a 2-R lot in unincorporated Plumas County?

A single-family home is permitted; a second detached dwelling is allowed if your parcel is at least twice the minimum lot area. An ADU is allowed in addition to that, subject to Article 45. Typical standards: 35 ft height, 20 ft front setback, and 5 ft per story for side/rear, with 50% coverage. See § 9-2.1302–1305.

What are the basic residential setbacks and heights countywide?

For most single-family zones (2-R, 3-R, 7-R, S-1, S-3), expect a 35 ft height limit and a 20 ft front setback; side/rear are 5 ft per story. Multifamily (M-R) has no front setback but keeps 5 ft per story sides/rear. Always check wildfire yard overlays that can supersede these. See § 9-2.1303–1305; § 9-2.1503–1505; § 9-2.1603–1605; § 9-2.1403–1405; § 9-2.419.

I’m on a commercial lot next to a house. Do I need a setback?

Yes. In C-1, C-2, and C-3, there’s generally no yard required, but a 10 ft yard applies where the commercial lot adjoins a residentially zoned parcel. See § 9-2.1905; § 9-2.2005; § 9-2.2105.

How does lot coverage work on rural/agricultural parcels?

In several resource zones (R-10, R-20, AP, GA, GF, TPZ), each dwelling and its accessory buildings may cover no more than one acre of land, regardless of parcel size. This cap can be the limiting factor even when total coverage allowances are high. See § 9-2.1704(c); § 9-2.1804(c); § 9-2.3004(d); § 9-2.3104(d); § 9-2.3304(d); § 9-2.3206.5.

Can I build to the lot line in Core Commercial (C-1)?

Often yes. C-1 has no required front, side, or rear yards unless the lot abuts a residentially zoned parcel, in which case a 10 ft buffer is required. Height is up to 35 ft. See § 9-2.1903–1905.

What ADU setbacks and sizes does Plumas County allow?

ADUs follow Article 45: at least one 800 sf unit with 4 ft side/rear setbacks must be allowed on residential lots; local rules cannot use lot coverage or FAR to block that “statewide exemption ADU.” County caps attached ADUs at the greater of 800 sf or 50% of the primary (max 1,200 sf) and detached ADUs at 1,200 sf; local ADU height is up to 35 ft. See § 9-2.4504; § 9-2.4506.

Do multifamily zones require a front setback?

No. In M-R, the front yard is “none,” with 5 ft per story for side and rear yards. Height is 35 ft and coverage is 50%. See § 9-2.1403–1405.

Are there FAR limits in Plumas County’s zoning?

No explicit FAR standards were found in the retrieved zoning materials. Projects are constrained by height, setbacks, lot coverage, and minimum lot dimensions instead. Not found in retrieved materials.

Do I need design review?

Some areas or project types may be subject to community-specific design review or overlay-based standards. This is not universal; check with Planning and see Plumas County Design Review and Overlay Districts. Verify with the jurisdiction.

Which code controls structural requirements like snow load or fire sprinklers?

The California Building Standards Code controls construction and life-safety. Zoning development standards address site and form (heights, yards, coverage), not structural design.

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