Ross — Land Use

Last reviewed: July 3, 2026

Overview

This page summarizes what the Town of Ross zoning ordinance (Title 18) actually says about permitted and conditional land uses in each local district, the key dimensional and parking rules that control those uses, and where combining/overlay districts change the rules. It is drawn directly from the Ross zoning text (Title 18) and cites the controlling code sections; verify parcel-specific questions with the Town. For the Town’s broad zoning program see Ross zoning & planning overview.

What this page covers (and what it does not)

• Covers permitted uses, conditionally permitted uses (use permits), and district-specific dimensional/parking rules that come from Title 18. Where the code is silent or parcel‑specific we state "Not found in retrieved materials" or advise "Verify with the jurisdiction."
• Does not cover building-code requirements (see the California Building Standards Code), tenant/housing law, or procedural filing steps — those live on other pages.

For quick cross-reference of development rules see Ross Development Standards. For design triggers see Ross Design Review. For parking specifics see Ross Parking. For ADU rules see Ross ADUs. For overlay rules see Ross Overlay Districts. For Title 24/building-code connections see California Building Standards Code. For landscaping and other site requirements see Ross Landscaping and Screening. (Each of those phrases above links to the Town menu pages.)

District-by-district breakdown

Below are the Town’s general districts as listed in Title 18 and the ordinance chapters that control permitted uses and standards. The ordinance lists general districts as R-1, C-L, C-D, C-C, P-F, O-S, and F and also establishes combining districts :B, CD, :0, and :H.

Note: "Permitted" = allowed without a use permit; "Conditionally permitted" = may be allowed only with a use permit (use permit findings required). General rules that apply across districts are in Chapter § 18.40.020–§ 18.40.110.

R-1 — Single Family Residence district

• Purpose: Preserve single-family character and established residential patterns. § 18.16.020.
• Typical permitted uses: single-family residences, accessory uses (including residential second units/ADUs considered ministerially), transitional and supportive housing, private garages, greenhouses, terraces, tool sheds, pools, home occupations (subject to home-occupation rules). See § 18.16.030.
• Conditionally permitted uses: Public/private schools with limits on size, parks, churches, nonprofit clubs, residential care facilities, guesthouses, private stables (on <1 acre), nighttime lighting of sports courts, and others listed in § 18.16.030(b) (use permit required).
• Key dimensional standards:
  • Minimum lot area: 5,000 sq ft; minimum lot width: 50 ft; minimum lot depth: 100 ft — § 18.16.040.
  • Front/rear/side yard requirements: see § 18.16.050 (code lists front/rear yard minima).
  • Height, coverage, floor area regulated in § 18.16.060–§ 18.16.090.
• Where it applies: As mapped on the Town zoning map; general mapping rules in § 18.40.030 (uncertainty rules).

R-1 with Special Building Site combining districts (R-1:B- variants)

• Purpose: Applied where larger lot sizes are necessary to preserve character. § 18.32.010–§ 18.32.020.
• Typical permitted uses: Same as R-1, but many uses in a :B district require or are modified by the combining-district rules. § 18.32.020–§ 18.32.070.
• Key dimensional standards (examples; the numeric suffix in the district symbol indicates minimum lot area in thousands of square feet): R-1:B-6, R-1:B-7.5, R-1:B-10, R-1:B-15, R-1:B-20, R-1:B-A, etc.; see table of required minimum lot width, side yard and maximum coverage/FAR in § 18.32.050–§ 18.32.070. Example entries: R-1:B-10 minimum width 85 ft; side yards 15 ft; coverage/FAR often 20% for many B tiers.
• Parking: Special B districts specify minimum parking spaces per lot tier (see § 18.32.040).

C-L — Local Service Commercial district

• Purpose: Small, centrally-located commercial area for local convenience services. § 18.20.020.
• Typical permitted uses (by right): Local retail and service uses such as food/clothing/drug/variety stores, retail bakeries, appliance sales, photo/art/flower/gift shops (in buildings), laundry agencies without on-site drycleaning, shoe repair, medical/dental/real estate/professional offices (not in first-story space fronting the street) — see § 18.20.025(b).
• Conditionally permitted (use permit): banks, beauty/barber/massage, restaurants (including on‑sale liquor), on‑site dry‑cleaning, public utilities, medical/professional offices located in first-story spaces fronting the street, gasoline stations, auto repair, multifamily housing in certain configurations, residential care facilities, SROs (with standards) — see § 18.20.030.
• Key dimensional/operational standards:
  • Maximum height: 2 stories / 30 ft for many C-L buildings — § 18.20.060.
  • Parking: For new or structurally altered buildings, 1 space per 250 sq ft of net rentable floor area (see § 18.20.070). C-L multifamily requires a minimum of one auto parking space per dwelling unit in addition to commercial parking when mixed uses occur — § 18.20.025(a), § 18.20.070.
  • No maximum FAR in some C-L provisions (check § 18.20.080 and related subsections).

C-D — Civic district

• Purpose: Sites for public, quasi‑public, cultural, educational and recreational uses. § 18.24.020.
• Typical permitted uses: Town hall, library, museum, fire/police stations, emergency shelters, multifamily/transitional housing, auditoriums, schools, parks, off‑street parking lots, local utility distribution — § 18.24.030.
• Conditionally permitted: Single‑family residential may be allowed by use permit; multifamily/transitional housing have additional regulations including minimum 1 parking space per dwelling, max height 2 stories/30 ft, max coverage 50%, FAR 50% — § 18.24.035–§ 18.24.040.
• Regulations for CD combining district: where :CD is combined, town council approval of plans and additional protections are required (see § 18.36.020).

C-C — Community Cultural district

• Purpose and specific uses/regulations: The code designates C-C among general districts but the text excerpts for detailed permitted uses and dimensional standards for C-C were Not found in retrieved materials in the provided files. The general district list is in § 18.08.010. Verify the specific C-C chapter with the Town.

P-F — Public Facilities district

• Purpose: For properties used or proposed for public purposes or specified public utility purposes. § 18.29.020.
• Permitted uses: Public schools, parks, recreation, hospitals, libraries, fire stations, historical sites/monuments, public utility facilities for local service (non‑wireless) and accessory uses — § 18.29.030(1).
• Conditional uses: Public utility storage yards and other site uses determined necessary by Council require use permits — § 18.29.030(2).

O-S — Open Space district

• Purpose: Preserve land in natural state and provide open-space buffer areas for recreation and conservation. § 18.30.020.
• Permitted uses: Conservation measures, trails, parks and picnic sites, public riding stables, tennis/swimming facilities, public utility watershed management — § 18.30.030(a).
• Conditional uses: Private nonprofit operations on public lands and living quarters for caretakers/watchmen require use permits § 18.30.030(b).

F — Floodway district

• Purpose: Applied to lands within stream/drainage channels and adjacent areas periodically inundated. § 18.31.020.
• Permitted uses: Recreational uses on open land and flood control management facilities are allowed without a use permit § 18.31.030(a).
• Conditional uses: Water/sewer/roadway/bridge and similar facilities necessary for public health and safety require use permits § 18.31.030(b).

Combining districts and overlays

• :B (Special Building Site): Replaces/increases minimum lot area, width, side yards, coverage and FAR as shown in § 18.32.030–§ 18.32.070 (e.g., R-1:B-10 lot width 85 ft; side yards 15 ft; coverage/FAR 20%).
• CD (Special Civic): When applied in combination, plans for building/alteration must often be submitted to Town Council and meet special findings § 18.36.020.
• :0 (Special Open) and :H (Special Hazard): When combined with other districts they require use permits for permitted uses and conditioning to recognize open-space or hazard features (§ 18.37.020, § 18.38.020).
• For how overlays change uses and where they apply, consult the zone map and the combining-district chapters; when in doubt, Verify with the jurisdiction. (Mapping rules: § 18.40.030).

Summary table — Most decision-relevant permitted uses / standards

Checklist

• Confirm zoning district from Town zoning map (district symbols per § 18.08.030) and check combining/overlay districts.
• Identify whether the proposed use is listed as a permitted use or a conditionally permitted use in the district chapter (e.g., § 18.16.030 for R-1, § 18.20.025–§ 18.20.030 for C-L).
• Confirm dimensional standards that apply (lot area, widths, yards, height, coverage, FAR) in the district chapter and any combining-district chapter (e.g., § 18.32.050–§ 18.32.070 for :B).
• Calculate parking requirements using district parking rules and ADU rules where relevant (see § 18.20.070 and ADU rules § 18.42.055).
• Check if proposed work triggers design review or special Council review per combining district rules (e.g., § 18.36.020); see Ross Design Review.
• If the use is conditional, prepare to satisfy the use-permit findings listed in § 18.20.030(b) and related sections.

Risks & Ambiguities

Plain-English Summary

Ross’s zoning (Title 18) is conservative: R-1 areas are primarily single-family with defined minimum lot sizes and yard rules; small local commercial (C-L) allows neighborhood retail but many uses need a use permit; civic, public-facility, open-space and floodway districts permit public uses with specific conditional exceptions. Combining districts (like :B) change lot-size/yard limits and can turn otherwise‑permitted uses into discretionary reviews. Always confirm the district symbol on the Town map and the applicable combining districts.

Information Gaps

• Full chapter text for C-C (Community Cultural) permitted uses and standards was Not found in retrieved materials (Title 18 lists the district but the detailed chapter text was not in the provided excerpts). Verify with the Town code or planning staff.
• Complete design-review thresholds and the Design Review chapter (if separate) were not fully present in retrieved excerpts; confirm triggers and process with the Town. Not found in retrieved materials (some design-review references appear in sign/fence rules).
• Parcel-level zoning map placement and exact overlay boundaries are not included here — check the official Ross zoning map at the Town for parcel-specific application. Verify with the jurisdiction.

Source References

• Town of Ross, Title 18 — Zoning: General districts and definitions (district list, rules on application/interpretation) § 18.08.010, § 18.04.030–§ 18.04.040, § 18.40.020–§ 18.40.110.
• R-1 Single Family Residence district: § 18.16.020–§ 18.16.100 (permitted uses, minimum lot and yard requirements).
• C-L Local Service Commercial district: § 18.20.020–§ 18.20.100 (permitted/conditional uses, height, parking, floor area).
• C-D Civic district: § 18.24.010–§ 18.24.040 (permitted/case-specific uses, multifamily conditions).
• P-F, O-S, F Districts: § 18.29.010–§ 18.31.030 (public facilities, open space, floodway permitted and conditional uses).
• Special Building Site (:B) Combining District: § 18.32.010–§ 18.32.070 (lot, parking, coverage, FAR tables).
• ADU local standards: § 18.42.055 (size, height, parking exceptions).
• Design-review references and fence/sign rules: § 18.20.090, § 18.40.080.

Retrieved passages

• Ross Zoning Code (Section 18.20.070) High relevance show source text
• Ross Zoning Code (Chapter application.) High relevance show source text
• Ross Zoning Code (§10) High relevance show source text
• Ross Zoning Code (§10) High relevance show source text
• Ross Zoning Code (§10) High relevance show source text
• Ross Zoning Code (§2) High relevance show source text
• Ross Zoning Code (Section 18.20.070) High relevance show source text
• Ross Zoning Code (Chapter 18.29) High relevance show source text

Cited sections

• Town of Ross, Title 18 — Zoning: General districts and definitions (district list, rules on application/interpretation) **§ 18.08.010**, **§ 18.04.030–§ 18.04.040**, **§ 18.40.020–§ 18.40.110**. fileciteturn0file19turn0file10turn0file12 (Title 18)
• **R-1 Single Family Residence district**: **§ 18.16.020–§ 18.16.100** (permitted uses, minimum lot and yard requirements). (§ 18.16.020)
• **C-L Local Service Commercial district**: **§ 18.20.020–§ 18.20.100** (permitted/conditional uses, height, parking, floor area). fileciteturn0file2turn0file14 (§ 18.20.020)
• **C-D Civic district**: **§ 18.24.010–§ 18.24.040** (permitted/case-specific uses, multifamily conditions). (§ 18.24.010)
• **P-F, O-S, F Districts**: **§ 18.29.010–§ 18.31.030** (public facilities, open space, floodway permitted and conditional uses). fileciteturn0file7turn0file3 (§ 18.29.010)
• **Special Building Site (:B) Combining District**: **§ 18.32.010–§ 18.32.070** (lot, parking, coverage, FAR tables). fileciteturn0file3turn0file18 (§ 18.32.010)
• **ADU local standards**: **§ 18.42.055** (size, height, parking exceptions). (§ 18.42.055)
• Design-review references and fence/sign rules: **§ 18.20.090**, **§ 18.40.080**. fileciteturn0file14turn0file10 (§ 18.20.090)
• Ross_ZoningCode.md

• Official Ross code library