Norco — Land Use

Last reviewed: July 2, 2026

Overview

This page summarizes what the City of Norco’s zoning ordinance actually says about land use: which activities are permitted, which require discretionary review, and the most decision‑relevant site standards by district. For the citywide frame, see Norco’s zoning overview. For dimensional tables and setback rules consult the City’s development standards. Wherever the code requires parking, check the local parking chapter referenced below.

Note: this page only interprets the Norco Municipal Code provisions retrieved from the City’s zoning ordinance documents (cited throughout). For anything parcel‑specific — including whether an overlay applies or whether a use is “similar” — Verify with the jurisdiction.

District-by-district breakdown

Each subsection below names the local district exactly as used in the ordinance, summarizes its Purpose, Typical Permitted Uses, Key dimensional or development standards, and where the zone is applied (or how its applicability is determined). Every requirement is tied to the ordinance section cited.

A-1 (Agricultural) — § 18.13 series

• Purpose: Preserve agricultural/rural uses while allowing single‑family homes and accessory agricultural functions; the zone is split into subzones by minimum lot size using numerical suffixes (e.g., A-1-20, A-1-2) to indicate lot size/density. See § 18.13.04.
• Typical permitted uses: Single‑family detached dwellings, public parks/playgrounds, accessory structures, and a range of agricultural uses (commercial poultry, truck crops, tree farms) subject to the lot‑size and setback rules in § 18.13.06.
• Key standards: sub-zone minimum lot sizes are set by suffix (e.g., A-1-20 = 20,000 sq ft, A-1-2 = 2 acres) and specific animal/rooster limits and setback rules appear in § 18.13.06.
• Where it applies: Shown on the official City zoning map; sub‑zone suffixes are required for every A‑1 parcel. § 18.13.04.

Practical note: many agricultural uses have additional lot‑size, setback, and animal‑keeping rules in § 18.13.06 — check the exact subzone suffix for minimum lot size and rooster limits.

R-3 (Low‑Density Multiple‑Family Residential) — § 18.17 series

• Purpose: Provide for low‑density multifamily compatible with Norco’s rural character; R‑3 is sub‑zoned by a numeric suffix to limit units per net acre (e.g., R-3-6, R-3-8) with an absolute cap of 8 units/acre. § 18.17.04.
• Typical permitted uses: Multiple‑family dwelling units, public parks/playgrounds, accessory uses (private garages, cabanas), home occupations, and small/large family day care in limited circumstances. § 18.17.06.
• Key standards: density limited by suffix (max 8 du/ac), parking ratios and minimum unit sizes/details are prescribed for specialized projects (see § 18.17.06 and related subsections). The chapter also points to Architectural Review and Conditional Use Permit chapters for plan approvals. § 18.17.06.
• Where it applies: mapped as R‑3 with numeric suffix; confirm the suffix and net‑acre calculation on the zoning map. § 18.17.04.

Practical note: supportive and transitional housing are listed as permitted types in R‑3 (see definitions and § references).

Hillside Zone — § 18.26 series

• Purpose: Regulate development in hillside areas to protect safety, avoid mass grading, and preserve rural hillside character. § 18.26.02–.04.
• Typical permitted uses: Agricultural uses, single‑family detached dwellings (one per lot), home occupations, animal keeping (with special rules), and limited supportive/transitional housing. § 18.26.06.
• Key standards: All hillside projects require Planning Commission review; where conflict exists, the hillside chapter controls. Application of special review procedures and flexibility in standards is spelled out in § 18.26.04–.08.
• Where it applies: to mapped hillside parcels; any grading, subdivision, or construction within the Hillside Zone triggers the chapter’s procedures. § 18.26.04.

LD (Limited Development) — Chapter 18.11

• Purpose: Hold a base land use where future planning is incomplete or where government/public utility properties exist; often interim until rezoning occurs. § 18.11.02.
• Typical permitted uses: The LD zone generally adopts the OS zone permitted uses; see § 18.11.06.
• Key standards: minimum lot size 1 acre (no lot created under that standard), minimum width 100 ft, depth 200 ft, and a max lot coverage 15% for permanent structures. § 18.11.10–.20.
• Where it applies: mapped LD parcels; often public/quasi‑public parcels awaiting final plan. § 18.11.02.

C‑G (Commercial General) — Chapter 18.29

• Purpose: Provide for general retail, service, office, and compatible commercial activities while protecting adjacent residential and equestrian character. See Chapter title and intent language in 18.29.
• Typical permitted uses: Mixed retail and service categories are listed in a Table 1 (use matrix): general retail, groceries, medical/dental offices, theaters, many personal services are permitted (P); others (motels, certain entertainment, drive‑throughs, some animal services) require a conditional use permit (CUP). See Chapter 18.29 Table 1 for the full list.
• Key standards: Development standards are summarized in Table 2: minimum lot size 13,125 sq ft, min width 75 ft, min depth 175 ft, building street side setback 25 ft, parking setback 10 ft, interior/rear setbacks 0 ft except when abutting an A or R zone (then 50 ft setback), maximum height 35 ft (CUP may allow increase to 50 ft). See § 18.29.30 and Table 2.
• Where it applies: mapped commercial corridors and parcels as shown on the zoning map; special frontage rules apply to urban arterials (see Chapter notes). § 18.29.30 and accompanying tables.

Practical note: Many C‑G uses include specific notes (e.g., limits on drive‑throughs, ancillary liquor sales, and massage area limits) — always check Table 1 footnotes.

M‑1 (Heavy Commercial / Light Manufacturing) — Chapter 18.24

• Purpose: Provide areas for heavy commercial and light industrial uses while minimizing impacts to sensitive uses; includes redevelopment rules for large warehouses. § 18.24.02–.04.
• Typical permitted uses: See Table 1: Allowed Uses for the M‑1 zone; the chapter lists numerous permitted (P) and conditionally permitted (CUP) industrial and heavy commercial activities. § 18.24.06.
• Key standards: The chapter ties allowed uses to specific development standards in the M‑1 chapter and establishes special rules for reusing warehouses > 50,000 sq ft (e.g., limits on expansion, reuse triggers). § 18.24.04–.06.
• Where it applies: mapped industrial/commercial areas where heavy commercial/manufacturing is intended; redevelopment of large warehouses is subject to the chapter’s special applicability rules. § 18.24.04.

M‑2 (Manufacturing / Industrial) — Chapter 18.25

• Purpose: Provide for manufacturing, wholesale, warehousing, research and compatible uses while protecting non‑industrial areas. § 18.25.* intent language.
• Typical permitted uses: Broad manufacturing/processing (except uses specifically listed as conditional), wholesaling, warehousing, research labs, accessory uses (offices incidental to industrial uses, cafeterias) and permitted animal‑care/farrier uses in certain circumstances. § 18.25.06.
• Conditional uses: Restaurants, industrial hospitals/clinics, service stations (meeting § 18.33), animal hospitals/kennels, public utility uses, caretaker dwellings, and many heavy or potentially noxious uses are listed as uses which may be permitted by a conditional use permit. § 18.25.08.
• Key standards: front yard (yard abutting street) minimum 30 ft (parking allowed in front yard except first 5 ft must be landscaped), interior side/rear yards often no requirement except 50 ft where abutting an A or R zone, maximum height 2 stories or 35 ft (CUP may allow up to 50 ft), building separation rules and screening/wall requirements where adjoining residential/OS/LD zones. § 18.25.16–.28.
• Where it applies: mapped industrial areas; verify on the city zoning map. § 18.25.02/other chapter intro material.

Practical note: M‑2 explicitly allows outdoor display/sales for certain uses (nurseries, lumber yards, equipment sales) subject to site plan review and Planning Director decisions on “similar uses.” § 18.25.28 and cross‑references to Chapter 18.42.

Overlay and Special Zones

• Housing Development Overlay (HDO) — § 18.64.02 et seq: created to facilitate affordable housing and requires a HDO site plan; HDO sites must have a specific plan in effect before subdivision or major grading. § 18.64.02–.12.
• Animal‑Keeping Overlay (AKO) — § 18.16.: establishes conditions to protect equestrian/animal‑keeping lifestyles (e.g., minimum flat usable area per animal, setbacks 35 ft from adjacent residences unless fenced, adjacency to horse trails). § 18.16. and cross‑refs to Chapter 18.13.
• Planned Development (PD) Overlay — § 18.27.*: establishes procedures for creating PD overlays, requires preliminary and final development plans, and allows customized development standards by ordinance condition. § 18.27.44–.52.

When an overlay applies the overlay’s site plan and special rules take precedence; always check the zoning map for overlay boundaries. § 18.64.04 and § 18.16.60.

Quick decision table (most decision‑relevant standards / permitted uses)

Always review the full Table 1 (use lists) and Table 2 (development standards) in the chapter for the zone — the chapter text includes detailed footnotes and exceptions.

How the code treats discretionary vs. permitted uses

• A use marked P in a zone’s Table 1 is permitted subject to code standards; a use marked C requires a conditional use permit (CUP) processed under Chapter 18.45. See each zone table and the CUP chapter cross‑references in the zone chapters. § 18.24.06; § 18.25.08; Chapter 18.45.
• The Planning Director or Planning Commission may apply the “similar uses” procedure to place a specific activity into a broader use category — see Chapter 18.42 for the similar‑use process. Multiple zone chapters reference Chapter 18.42 for ambiguous uses.

Practical guidance: if your proposed business is not literally listed in Table 1, expect the City to ask whether it fits an existing use category or whether you need a formal determination under Chapter 18.42.

Checklist — what an applicant must satisfy for a new use/change of use in Norco

• Confirm the parcel’s base zone and any overlays on the City zoning map (e.g., HDO, AKO, PD). Verify overlay applicability. § 18.64.04; § 18.16.60.
• Confirm whether the proposed use is a permitted (P) use or requires a CUP by checking the zone’s Table 1 (or Table 1 equivalent). See the Table 1 in the applicable chapter (e.g., C‑G, M‑1, M‑2). § 18.29 Table 1; § 18.24.06; § 18.25.06.
• If CUP required, prepare application materials per Chapter 18.45 and supporting site plan materials (site, circulation, landscaping, screening). See PD/plan submittal lists for planned developments. § 18.27.46; Chapter 18.45.
• Provide a site plan consistent with the zone’s development standards (lot size, setbacks, height, lot coverage) — see the zone’s Table 2 / development standards (e.g., § 18.29.30 for C‑G). § 18.29.30.
• Show compliance with off‑street parking and loading requirements in the referenced parking chapter for that zone (the chapter reference is zone specific; e.g., M‑2 references Chapter 18.32, C‑G references Chapter 18.38). § 18.25.26; § 18.29.30.
• Address screening/buffering and walls where abutting residential, A, LD or OS zones (masonry walls and landscape requirements may apply). (See § 18.25.24; § 18.29.50/70).
• If project is within an overlay (HDO, AKO, PD), deliver the overlay‑required plan or specifics (HDO requires HDO site plan / specific plan). § 18.64.02; § 18.27.46.
• Anticipate referrals or architectural/design review where required (see Chapter 18.41 referenced by R‑3 and CUP/plan review rules). § 18.17.06.
• Where the code or zone cross‑references other chapters (landscaping, signs, animal keeping), prepare compliance submittals (Chapters 18.37, 18.35, 18.68 as applicable). See relevant zone sections.

Also consult the City pages on design review and overlay districts early — they guide plan content and expectations.

Risks & Ambiguities

Plain‑English summary

Norco’s zoning ordinance assigns each parcel to a zone (A‑1, R‑3, C‑G, M‑1, M‑2, Hillside, LD, etc.) that lists permitted uses (P) and conditionally permitted uses (CUP). Each zone chapter contains its own development standards (lot sizes, setbacks, heights) and specific footnotes; overlays (HDO, AKO, PD) or Chapters such as 18.42 (similar uses) and 18.45 (CUP) can materially change what you must do to develop a site — always check the specific zone chapter and the applicable overlay on the official zoning map.

Source References

• Norco zoning text — M‑2 zone permitted & conditional uses; yards, height, parking: § 18.25.06, § 18.25.08, § 18.25.16.
• Norco zoning text — R‑3 zone density and uses: § 18.17.04, § 18.17.06.
• Norco zoning text — A‑1 zone subzones and permitted uses: § 18.13.04, § 18.13.06.
• Norco zoning text — C‑G zone use table and development standards (Table 1, Table 2): § 18.29.30 and Table 1 excerpts in chapter text.
• Norco zoning text — M‑1 allowed uses & applicability (warehouse rules): § 18.24.02–.06.
• Norco zoning text — Hillside Zone requirements & uses: § 18.26.04, § 18.26.06, § 18.26.08.
• Norco zoning text — Overlay zones (HDO): § 18.64.02–.12.
• Norco zoning text — Animal‑Keeping Overlay and animal rules: AKO establishment and animal keeping rules referenced in § 18.16.60 and cross‑reference portions of § 18.13.06.
• Norco zoning text — Planned Development Overlay procedures: § 18.27.44–.52 (preliminary and final plan requirements).
• For conditional use process: Chapter 18.45 (Conditional Use Permits) is the controlling chapter referenced throughout zone sections. (Referenced in multiple zone chapters.)

Also see the City pages: Norco Zoning, Development Standards, Parking, Design Review, Overlay Districts, and the state California Building Standards Code for building code requirements (note: building code and permit processes live in other chapters/pages). These links are to Norco menu pages referenced above.

Retrieved passages

• Norco Zoning Code (§ 18.25.06.) High relevance show source text
• Norco Zoning Code (§ 18.17.06.) High relevance show source text
• Norco Zoning Code (§ 18.63.06.) High relevance show source text
• Norco Zoning Code (§ 18.26.04.) High relevance show source text
• Norco Zoning Code High relevance show source text
• Norco Zoning Code (§ 18.25.08.) High relevance show source text
• Norco Zoning Code (§ 18.25.16.) High relevance show source text
• Norco Zoning Code (§ 18.21.18.) High relevance show source text

Cited sections

• Norco zoning text — **M‑2 zone permitted & conditional uses; yards, height, parking**: **§ 18.25.06**, **§ 18.25.08**, **§ 18.25.16**. (§ 18.25.06)
• Norco zoning text — **R‑3 zone density and uses**: **§ 18.17.04**, **§ 18.17.06**. (§ 18.17.04)
• Norco zoning text — **A‑1 zone subzones and permitted uses**: **§ 18.13.04**, **§ 18.13.06**. (§ 18.13.04)
• Norco zoning text — **C‑G zone use table and development standards (Table 1, Table 2)**: **§ 18.29.30** and Table 1 excerpts in chapter text. (§ 18.29.30)
• Norco zoning text — **M‑1 allowed uses & applicability (warehouse rules)**: **§ 18.24.02–.06**. (§ 18.24.02)
• Norco zoning text — **Hillside Zone requirements & uses**: **§ 18.26.04**, **§ 18.26.06**, **§ 18.26.08**. (§ 18.26.04)
• Norco zoning text — **Overlay zones (HDO)**: **§ 18.64.02–.12**. (§ 18.64.02)
• Norco zoning text — **Animal‑Keeping Overlay and animal rules**: AKO establishment and animal keeping rules referenced in **§ 18.16.60** and cross‑reference portions of **§ 18.13.06**. (§ 18.16.60)
• Norco zoning text — **Planned Development Overlay procedures**: **§ 18.27.44–.52** (preliminary and final plan requirements). (§ 18.27.44)
• For conditional use process: Chapter **18.45** (Conditional Use Permits) is the controlling chapter referenced throughout zone sections. (Referenced in multiple zone chapters.) (chapter referenced)
• Norco_ZoningCode.md

• Official Norco code library