Local zoning · Alturas

Alturas — Land Use

Land Use under the Alturas local zoning and planning code, with the controlling citations.

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Last reviewed: July 3, 2026

Overview

This page summarizes what Chapter 28 (the City of Alturas Zoning Ordinance) actually says about land use: which Primary Zones exist, how the Land Use Matrix assigns permitted/administrative/conditional status, and where special land‑use restrictions and development rules live. Where the ordinance contains numeric limits or program rules I cite the controlling §; where the numerical tables were not retrievable I note that explicitly so you can Verify with the jurisdiction. See the Land Use Matrix in § 28.22.020 for the primary “P / AD / UP” rules and the zone list in § 28.12.010 for the official district names.

How Alturas organizes land use (short)

  • The Zoning Ordinance establishes Primary Zones and Overlay Zones; the allowed land uses by zone are shown in the Land Use Matrix (Table 28.22.020, § 28.22.020).
  • Primary Zone descriptions (intent, where to apply them) are in § 28.21.020–030 and the list of zone district codes is in § 28.12.010.
  • Site‑planning and development standards that frequently affect land‑use choices (setbacks, lot sizes, parking requirements, etc.) live in Article IV (notably § 28.40.010 and the general development matrix § 28.41.020). Many of those numeric values are presented in tables/figures that were omitted in the retrieved text — see “Information Gaps” below.

For design and compliance work, check parking rules (Alturas uses a separate parking standards article) — the ordinance requires all projects provide parking per the Parking Standards in Article IV, Division 6. See the Parking link below when preparing plans.

District-by-district breakdown (purpose, typical allowed uses, key numeric rules where the code provides them, and where each district is typically applied)

Note: each district heading below uses the exact local district codes from § 28.12.010. For legal authority and the matrix that shows which uses are allowed by right (P), by Administrative Permit (AD) or by Use Permit (UP), see § 28.22.020.

AG — Agriculture (General Agriculture)

  • Purpose: lands for grazing, animal‑raising, horticulture and limited residential development. Applied to rural parcels and pre‑zoned unincorporated lands intended to remain agricultural. § 28.21.020(A).
  • Typical permitted uses: agricultural operations, many animal‑raising activities allowed by right; single‑family dwellings and one guest house/secondary dwelling where services permit. See the Land Use Matrix for precise P/AD/UP entries. § 28.22.020.
  • Key numeric standards called out in code: minimum lot size for residential use in AG is 2 acres (explicit in the AG description). § 28.21.020(A).
  • Where applied: outlying agricultural parcels and areas intended to remain low‑intensity. § 28.21.020(A).

RR — Rural Residential

  • Purpose: lowest density residential zone; serves areas with limited sewer/water. § 28.21.020(B).
  • Typical permitted uses: single‑family dwelling (P where indicated), limited animal raising, guest house and secondary dwelling possible (AD). See Land Use Matrix. § 28.22.020.
  • Key numeric standard: accommodates up to 3 dwelling units per net acre at maximum density. § 28.21.020(B).

R1 — Single‑family Residential (Low Density)

  • Purpose: low‑density neighborhoods served by public water/sewer. § 28.21.020(C).
  • Typical permitted uses: single‑family detached (P) and accessory residential uses (guest house, secondary dwelling per § 28.38.040 / § 28.38.060). Some home occupations and limited day‑care types appear as AD in the Land Use Matrix. § 28.22.020; § 28.38.040; § 28.38.060.
  • Key numeric standard: R1 density cap is 7.25 dwelling units per net acre. § 28.21.020(C).

R2 — Medium Density Residential

  • Purpose: supports both single‑family and attached/shared‑wall housing (duplexes, triplexes, fourplexes), including zero‑lot‑line/attached construction. § 28.21.020(D).
  • Typical permitted uses: Multi‑family is permitted (P) in R2 and higher-density R3; secondary dwellings permitted as AD; see the Land Use Matrix and the multi‑family rules § 28.38.030. § 28.22.020; § 28.38.030.
  • Key numeric standard: up to 15 dwelling units per net acre. § 28.21.020(D).

R3 — High Density Residential

  • Purpose: highest residential intensity; allows stacked apartments, condos, hotels/motels and mobile home parks. § 28.21.020(E).
  • Typical permitted uses: Multi‑family (P), emergency shelters (where listed as P in matrix), and some low‑intensity commercial uses as transitional uses. See § 28.22.020 and § 28.38.030.
  • Key numeric standard: up to 29 dwelling units per net acre. § 28.21.020(E).

C1 — Retail/Office Commercial

  • Purpose: pedestrian‑oriented retail, personal services and offices; encourages mixed‑use (residential above first floor in some cases). § 28.21.030(A).
  • Typical permitted uses: low‑intensity retail and office, restaurants (subject to standards), professional services; residential only as part of mixed‑use (and residential uses are prohibited on the first floor except limited caretaker housing — see notes in the development standards). § 28.22.020; § 28.41.020 (notes).
  • Key local detail: the ordinance explicitly states residential uses are prohibited on the first floor in C1 (see the general development notes). § 28.41.020 (note 3).

C2 — General Commercial

  • Purpose: higher‑intensity, auto‑oriented commercial along highways and busy streets (auto sales/service, large retail). § 28.21.030(B).
  • Typical permitted uses: larger retail, automotive uses, some manufacturing/sales combinations; residential generally limited or by permit. See the Land Use Matrix for P/AD/UP. § 28.22.020.

M1 — Light Industrial / Manufacturing

  • Purpose: low‑impact industrial uses close to commercial/residential areas; buffers between commercial and heavy industrial. § 28.21.030(C).
  • Typical permitted uses: light manufacturing, storage, some commercial sales incidental to manufacture; certain housing types (caretaker) may be AD/UP per matrix. § 28.22.020.

M2 — Heavy Industrial

  • Purpose: full range of industrial uses that can generate noise, dust, traffic and other impacts; must be sited away from sensitive uses. § 28.21.030(D).
  • Typical permitted uses: heavy manufacturing, processing, yards and other high‑impact industrial activities; heavy uses often require use permits and are limited in location. § 28.22.020.

RC — Recreation

  • Purpose & uses: parks, campgrounds, recreational uses; some lodging and shelter uses are called out in the matrix (e.g., emergency shelters subject to specific rules). § 28.21.040; § 28.22.020.

OS — Open Space

  • Purpose & uses: resource protection, passive open space; only limited recreational and resource‑compatible uses allowed. See matrix and overlay rules for standards. § 28.21.040; § 28.22.020.

Representative decision‑relevant standards table

This table shows common project decisions (can I do X in Y zone?) and where to look in the code. Use the Land Use Matrix § 28.22.020 as the master reference; the second column cites the specific implementing standard when the use has additional restrictions.

Common land use / project Typical Zoning response in the Matrix Code reference
Single‑family detached on a legal lot P in AG, RR, R1, R2, R3 § 28.22.020 ; single‑family rules § 28.38.050
Multi‑family housing P in R2 and R3; UP in C1 (mixed use conditions) § 28.22.020; multi‑family standards § 28.38.030
Secondary/Accessory Dwelling Unit (ADU / Secondary Dwelling) AD in residential zones (allowed by Administrative Permit when standards met) ADU unit size table and rules § 28.38.040 (Table 28.38.040)
Guest house AD in residential zones; must meet size/use limits (no separate meter, max 600 sq ft) § 28.38.060 (600 sq ft limit)
Day care (small) AD across most residential zones (see matrix) Land Use Matrix § 28.22.020 and day care restrictions § 28.38.020
Downtown Historic alterations / zero setbacks DH overlay encourages zero front setback in downtown; specific exceptions in 28.23.050 Overlay: § 28.23.050 (Downtown Historic District)

(For a complete P/AD/UP mapping for every use and zone consult Table 28.22.020 directly. The ordinance treats the matrix as authoritative.)

Key use‑specific rules you will hit first

  • Secondary dwellings / ADUs: Administrative Permit allowed when the unit and lot meet the requirements in § 28.38.040 and Table 28.38.040 (unit size by lot size); the local rules implement state ADU law but also impose the local size table. § 28.38.040.
  • Guest houses: limited to 600 sq ft; cannot be rented and may not have separate electric meter — § 28.38.060.
  • Multi‑family: developments of more than four units are treated as commercial for site‑plan and design standards (Article IV) — § 28.38.030; in C1 multi‑family must not occupy first floor in mixed‑use projects.
  • Day care / residential care: the Land Use Matrix flags where small/large/commercial day care is allowed; additional operating/site standards are in § 28.38.020.

How overlays change land use

  • Overlay Zones are applied in addition to a Primary Zone and can add or restrict allowed uses or development rules. The overlay list and notation are in § 28.12.020 (examples: -AS, -FC, -DH, -MHP). § 28.23.020–050 explains that overlays modify or add standards; the Downtown Historic (-DH) overlay explicitly encourages zero front setbacks and pedestrian orientation. § 28.12.020; § 28.23.050.

Learn the overlay rules before assuming a use is permitted — overlays can convert a P into AD/UP or add development standards. See the Overlay Districts link above for local mapping and intent.

Practical guidance (synthesis & comparison)

  • For simple single‑family work (addition, ADU, guest house) start with § 28.38.050–060 and the Administrative Permit process in § 28.52.010; ADUs have a local size table but otherwise follow state ADU allowances. § 28.38.040; § 28.52.010.
  • For multi‑unit or commercial projects expect Site Plan review and the Site Planning & Development Standards of Article IV to apply; this can trigger design review and parking requirements early in the process (see § 28.40.010 & § 28.41.020). § 28.40.010; § 28.41.020.
  • If your parcel sits at a zone boundary or has an overlay, the ordinance requires interpretation rules and Director determinations; mapping uncertainty is resolved per § 28.10.030 C. Expect the Director to issue a written interpretation if needed. § 28.10.030 C; § 28.11.010.

Checklist (what an applicant must satisfy for a new land use or change of use)

  • Confirm the parcel Primary Zone and any Overlay Zone(s) (Zone Maps / § 28.12.030). § 28.12.030
  • Consult the Land Use Matrix (Table 28.22.020) to see P / AD / UP status for your specific use. § 28.22.020
  • If AD or UP is required, prepare the Administrative or Use Permit application materials (site plan, findings, neighborhood notice) per Article V and § 28.52.010 / § 28.52.040. § 28.52.010
  • Check applicable Land Use Restrictions in Article III (e.g., day care, kennels, lodging) and comply with those sections. § 28.30.010
  • Provide parking per the city's parking standards (Article IV, Division 6). See the Parking link. § 28.40.010
  • Follow Site Planning and Development Standards (Article IV) and any overlay rules (Article II, Div. 4). § 28.40.010; § 28.23.020
  • Record any required deed restrictions/conditions (e.g., guest house restrictions that must be recorded). § 28.38.060

Risks & Ambiguities

Issue Why it matters What to verify
Missing numeric development table values (setbacks, heights, lot coverage) The general development matrix is referenced in § 28.41.020 but accompanying numeric images/tables were omitted from retrieved materials; you need these numbers to prepare site plans and setback calculations. Obtain the full Table 28.41.020 and any zone‑specific numeric tables from the City (Planning Dept) or the official zone maps. § 28.41.020
Downtown Historic (-DH) specifics on allowed signage and materials The DH overlay text explains intent and zero‑setback exceptions (§ 28.23.050), but detailed design standards for signage/materials may be in a separate Design Review or Historic Preservation document. Consult § 28.23.050 and Alturas Historic Preservation / Design Review documents; verify whether additional design guidelines apply.
Parcel-specific zone boundaries Some lots contain multiple zones or ambiguous boundaries; that changes which rules apply. § 28.10.030 C contains the rules for map boundary interpretation. Verify exact zone lines on the official Zone Maps and, if ambiguous, request a Director Determination per § 28.11.010.
ADU local size limits vs. state ADU law The ordinance has a local ADU size table at § 28.38.040 which implements state law but may differ in form; conflicts can arise if state law preempts local standards. Use § 28.38.040 and confirm compliance with state ADU law; for legal conflicts consult the City.
Use Permit condition permanence Use Permits are recorded and run with the land unless a termination condition is included (§ 28.38. and § 28.54.030). Expect recorded conditions that bind future owners—confirm recording requirements and any end dates.

Plain‑English summary (for a homeowner)

The Alturas Zoning Ordinance (Chapter 28) lists exact zone codes like AG, RR, R1, R2, R3, C1, C2, M1, M2, RC, and OS and uses a Land Use Matrix (Table 28.22.020) to say whether a use is permitted by right, allowed with an Administrative Permit, or requires a Use Permit; common residential items (single‑family, ADUs, guest houses) are specifically covered in § 28.38.040–060 and the primary zone descriptions explain where each district is meant to be used. Always check the Land Use Matrix, overlay zones, and Article IV site standards before assuming a project is “by‑right.”

Source References

  • City of Alturas Zoning Ordinance (Chapter 28) — general/chapter citation and authority: § 28.10.010–030.
  • List of Primary Zone Districts (AG, RR, R1, R2, R3, C1, C2, M1, M2, RC, OS): § 28.12.010.
  • Land Use Matrix and how to read it: § 28.22.020 (Table 28.22.020).
  • Primary Zone descriptions and density caps: § 28.21.020–030 (AG, RR, R1, R2, R3, C1, C2, M1, M2).
  • Site planning and development standards overview: § 28.40.010; general development standards matrix: § 28.41.020 (numeric tables/images omitted from retrieved text).
  • ADU / Secondary Dwelling rules and Table 28.38.040: § 28.38.040.
  • Guest house limits: § 28.38.060.
  • Multi‑family dwelling rules: § 28.38.030.
  • Overlay zones and Downtown Historic District: §§ 28.12.020, 28.23.050.
  • Administrative and Use Permit procedures and interpretations: §§ 28.52.010, 28.52.050, 28.11.010.

Internal Alturas reference pages (useful quick links for applicants):

  • Alturas zoning & planning overview: /us/california/alturas
  • Alturas Zoning: /us/california/alturas/zoning
  • Alturas Development Standards (site planning / setbacks): /us/california/alturas/development-standards
  • Alturas Parking: /us/california/alturas/parking
  • Alturas Design Review: /us/california/alturas/design-review
  • Alturas Overlay Districts: /us/california/alturas/overlay-districts
  • Alturas Historic Preservation: /us/california/alturas/historic-preservation
  • Alturas Signage: /us/california/alturas/signage
  • Alturas Nonconforming Uses: /us/california/alturas/nonconforming-uses
  • Alturas Variances and Exceptions: /us/california/alturas/variances-and-exceptions
  • Alturas Landscaping and Screening: /us/california/alturas/landscaping-and-screening
  • Alturas ADUs: /us/california/alturas/adu
  • California Building Standards Code (Title 24): /us/california/building-codes

Information Gaps

  • Full numeric values for the General Development Standards matrix (setbacks, maximum heights, lot coverage, FAR, minimum lot widths) appear in Table 28.41.020 but the retrieved file had the table images omitted; numeric specifics are therefore Not found in retrieved materials. See § 28.41.020 and request the complete table from the City to compute exact setbacks and heights.
  • Precise parking ratios (stall counts per use) are referenced to Article IV Division 6 but the numeric standard table was not present in the text excerpts retrieved. Not found in retrieved materials — consult the Parking section.
  • Any recent local amendments or Director Determination Letters that alter specific land use interpretations may not be in the retrieved printout; check the City’s live ordinance and planning docket. Verify with the jurisdiction.

Sources

Retrieved passages

  • Alturas Zoning Code (Article VIII) High relevance
  • Alturas Zoning Code (ARTICLE IV.) High relevance
  • Alturas Zoning Code (Article IV) High relevance
  • Alturas Zoning Code (section 28.22) High relevance
  • Alturas Zoning Code (Article II) High relevance
  • Alturas Zoning Code (Section 28.63.020.) High relevance
  • Alturas Zoning Code (section after) High relevance
  • CPC § 300 High relevance
  • Alturas Zoning Code (§ 2) High relevance
  • CWUIC § 65850.6 (Title 24) High relevance
  • Alturas Zoning Code (chapter and) High relevance
  • Alturas Zoning Code (Section contains) High relevance
  • Alturas Zoning Code (Section shall) High relevance
  • Alturas Zoning Code (Section pursuant) High relevance
  • Alturas Zoning Code (Section describes) Medium relevance
  • Alturas Zoning Code (chapter to) Medium relevance
  • Alturas Zoning Code Medium relevance
  • Alturas Zoning Code (§ 1) Medium relevance
  • Alturas Zoning Code (Section 28.52.090.) Medium relevance

Cited sections

Frequently asked questions

What can I build on an R-1 lot in Alturas?

You may build a single‑family detached dwelling by right in R1; accessory structures, one guest house (subject to § 28.38.060) and one Secondary Dwelling/ADU (Administrative Permit per § 28.38.040) are allowed where the lot and unit meet ordinance standards. Check the Land Use Matrix in § 28.22.020 for related AD/UP rules.

What are Alturas setback requirements?

The ordinance centralizes setbacks and similar numeric standards in the General Development Standards Matrix (Table 28.41.020). The code text references that matrix in § 28.41.020, but the numeric table images were omitted in the retrieved materials here — so exact distances are Not found in retrieved materials; obtain Table 28.41.020 from the City to get the zone‑by‑zone setbacks.

Do I need design review in Alturas?

Many commercial, high‑density residential, and industrial projects are subject to Site Plan approval and the Article IV site planning and development standards; that review process includes design considerations. See § 28.40.010 and the Site Planning rules in Article IV. For Downtown Historic (-DH) projects, additional design expectations are explicit in § 28.23.050.

Can I add an ADU to my R2 property and how big can it be?

ADUs (Secondary Dwellings) are allowed as an Administrative Permit in residential zones including R2 when they meet the requirements in § 28.38.040. The ordinance includes a local size table (Table 28.38.040) that caps detached ADUs by lot size (e.g., up to 1,200 sq ft on lots 20,000 sq ft or greater); consult § 28.38.040 for the full table.

Where do I find whether a commercial use is allowed in C1 vs C2?

Refer to the Land Use Matrix (Table 28.22.020) — C1 is Retail/Office Commercial (pedestrian‑oriented, limited intensity) and C2 is General Commercial (auto‑oriented, higher intensity); the matrix shows P / AD / UP for each use and zone. See § 28.22.020 and the C1/C2 descriptions in § 28.21.030.

Are guest houses rent‑able in Alturas?

No. Guest houses are limited by § 28.38.060 to temporary non‑commercial sleeping quarters for visitors of the property owner/lessor and are not to be rented out; guest houses are also subject to a 600 sq ft limit and other restrictions. § 28.38.060.

If my lot has two zone designations which rules apply?

Where a lot contains multiple zones the City applies the rule that the use must be consistent with the zone shown for the portion of the lot where the use is proposed; mapping ambiguity is resolved under § 28.10.030 C and the Director may issue an interpretation per § 28.11.010. Verify boundary lines on the official Zone Maps or request a Director Determination.

Does Alturas allow emergency shelters and are there limits?

Emergency shelters are addressed in the Land Use Matrix (see § 28.22.020) and the ordinance imposes operational and site standards (e.g., max 30 beds, parking rules) in the relevant Land Use Restriction section; see § 28.38.055 (emergency shelters) for detailed standards.

Can I get a variance to change use‑related numeric standards?

A Variance may be requested under § 28.52.050 when special circumstances apply, but a Variance cannot authorize a use that is not otherwise allowed by the zone; Variances require public hearing and findings under state law. § 28.52.050.

Where are the signage rules for identifying businesses?

Signage is regulated by the Sign Standards in Article IV (Sign Permits and standards are referenced throughout the Land Use Restrictions where signage is allowed). For example, small residential facilities and some home businesses have explicit sign limits in their use descriptions; see the Land Use Restrictions sections and the Sign Standards references in § 28.22.020 and related use sections. ---

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