Local zoning · Rio Dell

Rio Dell — Parking

Parking under the Rio Dell local zoning and planning code, with the controlling citations.

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Last reviewed: July 2, 2026

Overview

This page explains how the Rio Dell Zoning Ordinance regulates parking, off‑street loading, bicycle parking, surfacing and stall dimensions, and related site standards. The city’s off‑street parking requirements are located in RDMC § 17.30.230 (the Parking Regulations), with zone‑specific development rules (e.g., flag lots, recreational vehicle parks) appearing elsewhere in Title 17. All numeric standards below are taken from the Rio Dell zoning ordinance and the cited local sections.

(First references — internal links: see Rio Dell Zoning overview, Zoning, Development Standards, Design Review, Overlay Districts, ADUs, and the California Building Standards Code.)

What the ordinance requires (core rules)

  • The City’s off‑street parking program is codified at § 17.30.230. That section sets the purpose and intent, the required number of off‑street spaces by land use, special rules for handicap accessible spaces, bicycle parking, motorcycle parking, stall and aisle dimensions, surfacing, striping, curbing/wheel stops, driveway standards, and exceptions/administrative variances. See RDMC § 17.30.230 for the full text.

  • Required numbers of spaces: the ordinance lists minimum ratios by detailed use. Examples (minimums): Single‑family and duplex = 2 spaces per dwelling unit; Multifamily 1‑BR = 1, 2–3 BR = 2, 4+ BR = 2.5; Guest parking = 0.5 spaces per dwelling. Commercial/assembly/industrial uses each have specific ratios in the table in § 17.30.230(17). Use types not listed are determined by the Community Development Director in consultation with Public Works.

  • Dimensions and layout: stall widths and lengths and minimum aisle widths are fixed in § 17.30.230(6) (e.g., standard perpendicular stall: 8.5 ft × 19 ft; compact stalls defined and limited to 25% of a lot; one‑way aisle minimum 12–25 ft depending on layout).

  • Handicap (accessible) parking: design, size and quantity rules are in § 17.30.230(18) (size minimums — e.g., accessible stalls at least 9 ft wide × 18 ft long; van access aisles 8 ft wide; number of spaces: at least 1 for 1–25 total spaces and one more for each additional 25 or fraction).

  • Bicycle parking: multifamily and nonresidential uses must provide bicycle parking under § 17.30.230(19). Design minimum: each bicycle space at least 6 ft × 2 ft and a rack/shelter that secures bikes upright. Required counts are tied to vehicle parking totals (e.g., 3–25 vehicle spaces = 3 bicycle spaces; 26–50 = 5; 51–75 = 10; etc.).

  • Loading: off‑street loading requirements and dimensions are in § 17.30.230(21) (e.g., industrial/institutional 5,000–40,000 sq ft = 1 loading space; loading berths minimum 11 ft × 35 ft with 14 ft vertical clearance; loading areas placed near the rear of the parcel and screened). The ordinance also exempts loading spaces for certain existing Wildwood Avenue properties (see the code).

  • Surfacing, striping, curbs and wheel‑stops: parking surfaces (all‑weather asphalt, concrete or equivalent) and striping/curbing standards are in § 17.30.230(7–9); single‑family required spaces may use gravel/decomposed granite except the first 25 ft from a paved street which must be paved.

  • Exceptions / administrative flexibility: The Community Development Director (with Public Works) may approve exceptions to location or amount of required parking based on site constraints, proximity to urban centers, historically designated structures, or when an alternative substitute parking area is provided (see § 17.30.230(4–5)). For ministerial projects subject to state streamlined approval, Rio Dell will not require parking beyond state maximums per the ministerial approvals chapter § 17.35.040(d).

District‑by‑district breakdown — how parking rules apply

The Rio Dell ordinance establishes principal zones in § 17.15.010 (e.g., SR, UR, TC, NC, CC, R, PF, S, I, IC, NR, SM). For parking, the controlling rule is citywide in § 17.30.230; zone rules modify how parking is provided on parcels in those zones (examples below).

Note: each district summary below quotes the zone designation and shows the most relevant parking‑related local references (where the zone explicitly modifies parking requirements. For full zone purposes/uses/dimensional standards see Chapter 17.20 and the City’s Development Standards.)

Urban Residential (UR)

  • Purpose / typical uses: urban/medium‑density housing; multifamily permitted. See Chapter 17.20 UR specifics.
  • Parking implications: off‑street parking ratios in § 17.30.230(17) apply (multifamily stall counts, guest parking). Multifamily projects must also provide bicycle parking per § 17.30.230(19).

Suburban Residential (SR)

  • Purpose / typical uses: lower‑density single‑family; zones where driveways and on‑lot parking dominate.
  • Parking implications: residential minima (2 spaces/unit for single‑family/duplex) are in § 17.30.230(17); single‑family driveway/stall surfacing allowances (gravel allowed except first 25 ft) in § 17.30.230(7) apply.

Town Center (TC)

  • Purpose / typical uses: main commercial corridor (Wildwood Ave, etc.).
  • Parking implications: TC uses follow the commercial ratios in § 17.30.230(17). Important TC‑specific notes: temporary storage/long‑term parking of RVs/boats is treated specially in the TC along Wildwood Avenue (limits on storage duration and requiring full on‑lot placement) under § 17.30.230(2)(d); and the ordinance contains a specific exception for required loading spaces south of Elm Street on Wildwood Avenue.

Neighborhood Center (NC) and Community Commercial (CC)

  • Purpose / typical uses: small‑scale (NC) and broader retail / services (CC).
  • Parking implications: commercial parking ratios and loading standards in § 17.30.230(17) and (21) govern; landscape/lot screening rules for parking lots apply (see § 17.30.230(12–13)).

Industrial (I) and Industrial Commercial (IC)

  • Purpose / typical uses: manufacturing, warehouses, light industrial. IC has detailed dimensional tables in § 17.20.110.
  • Parking/loading implications: industrial uses have distinct loading ratios in § 17.30.230(21) (e.g., 5,000–40,000 sq ft = 1 loading space) and vehicle parking ratios in § 17.30.230(17). Off‑street loading standards (dimensions, clearance, location) are binding.

Rural (R), Suburban (S), Suburban Medium (SM), Natural Resource (NR)

  • Purpose / typical uses: lower density or resource uses. Development standards (minimum lot sizes, setbacks) appear in Chapter 17.20 tables like Table 17.20.130 (SM).
  • Parking implications: the base off‑street parking tables in § 17.30.230(17) apply; special site constraints, topography, and rural road frontage can be considered under the exceptions in § 17.30.230(5). Flag lots and some rural lot types have an extra parking requirement (see flag lot standards below).

Public Facility (PF)

  • Purpose / typical uses: parks, schools, public buildings.
  • Parking implications: required parking is the higher of the PF‑use table entry or a site‑specific determination by the Community Development Director; accessible parking rules per § 17.30.230(18) apply.

Special local rules (site types)

  • Flag lots: the flag‑lot development standards require in addition to RDMC § 17.30.230 two additional independently accessible parking spaces because on‑street parking is limited — the flag‑lot standards include that extra requirement in the flag‑lot section of Chapter 17.30 (flag‑lot text references RDMC § 17.30.230). The flag‑lot clause is included in the land division/flag lot development rules in Chapter 17.30 (see the flag‑lot development standards text).
  • Recreational vehicle parks: RV parks have their own parking/site access standards (paving, internal circulation and guest amenities) in § 17.30.290 (e.g., paved access ways and spaces; max 20 spaces/acre; 15 ft open space between RVs). These rules affect parking layout and surfacing for that use.

Quick reference table — most used numeric standards

Standard / Use Requirement (decision‑relevant) Code Reference
Single‑family / duplex parking 2 spaces per dwelling unit § 17.30.230(17)
Multifamily (1 BR / 2–3 BR / 4+ BR) 1 / 2 / 2.5 spaces per unit; 0.5 guest per unit § 17.30.230(17)
Accessible parking (size/qty) Stalls ≥9 ft × 18 ft; van aisle 8 ft; 1 space for 1–25 total spaces, +1 per 25 after § 17.30.230(18)
Bicycle parking (counts) 3–25 vehicle spaces → 3 bike spaces; 26–50 → 5; 51–75 → 10; 76–100 → 15; 100+ → 20 § 17.30.230(19)
Loading berth dims Minimum 11 ft × 35 ft; 14 ft vertical clearance § 17.30.230(21)
Standard stall dims Perpendicular: 8.5 ft × 19 ft; Compact: 7.5–7 ft widths; aisle widths depend on angle (per § 17.30.230(6)) § 17.30.230(6)
Surfacing All parking/aisles must be paved with durable surface; residential may use gravel except first 25 ft from paved street § 17.30.230(7)
Flag lots (extra spaces) Flag lots must provide two additional independently accessible parking spaces beyond § 17.30.230 minima (flag‑lot standards). Flag‑lot development standards (Chapter 17.30)

Checklist (what an applicant must satisfy)

  • Confirm the parcel’s zone (e.g., UR, SR, TC) in RDMC § 17.15.010 and apply the base parking ratios in § 17.30.230(17).
  • Calculate required accessible, motorcycle and bicycle spaces (see § 17.30.230(18–20)).
  • Provide dimensioned parking layout meeting stall/aisle dimensions in § 17.30.230(6) and surfacing/striping/curbing standards (7–9).
  • Locate loading berths per § 17.30.230(21) and include screening/lighting/striping details.
  • For special parcel types (flag lot, RV park, historic structure), check the applicable chapter (flag lots / RV parks in Chapter 17.30) for extra requirements or exceptions.
  • If requesting a parking reduction, prepare a written justification tied to the exception criteria in § 17.30.230(5) (geography, transit proximity, historic designation, topography).
  • If the project is a ministerial state‑streamlined housing approval, confirm parking caps in § 17.35.040(d).

Risks & Ambiguities

Issue Why it matters What to verify
Flag‑lot extra spaces — section number not obvious Flag‑lot text requires 2 extra independently accessible spaces but the current RDMC header for that paragraph is not displayed in all printouts Verify current flag‑lot section header and cross‑reference the flag‑lot text in Chapter 17.30; check whether the requirement was re‑numbered in recent ordinances. See flag‑lot standards text.
Historic buildings and parking Historic designation can trigger exceptions to parking counts but may also create constraints on lot modifications Confirm historic status and whether the Community Development Director may allow parking exceptions per § 17.30.230(5).
Wildwood Ave / Elm St exceptions Loading exemptions and RV storage limits are geographically specific (Wildwood Ave / Elm St) Confirm exact parcel location relative to the Wildwood/Elm exceptions in § 17.30.230(21)(c)(v) and (2)(d).
Compact stall allowances vs. total lot size Compact stalls limited to 25% of lot but compact thresholds interact with lot size and total stall count Make sure compact stall math uses the site’s total spaces per § 17.30.230(6).
Ministerial housing (state law) parking caps State ministerial approvals can limit local parking requirements; Rio Dell references this in its ministerial chapter If project is ministerial housing, confirm which state program applies and that the City will not require parking beyond the state cap per § 17.35.040(d).

Plain‑English summary

Rio Dell requires on‑site parking for nearly all new or expanded uses and sets minimum counts, stall sizes, surfacing, bicycle parking and loading standards in § 17.30.230; some zones and special situations (flag lots, RV parks, parts of Wildwood Avenue) have additional or modified requirements — always confirm the parcel’s zone and any site‑specific exceptions with the Community Development Director.

Source References

  • RDMC § 17.30.230 (Parking regulations: parking counts, bicycle/motorcycle/handicap parking, dimensions, surfacing, striping, curbing, access, exceptions).
  • RDMC § 17.30.230(6–9) (parking dimensions, surfacing, striping, curbing/wheel stops).
  • RDMC § 17.30.230(18–21) (handicap, bicycle parking, motorcycle parking, loading requirements and dimensions).
  • Flag‑lot development standards (Chapter 17.30 — flag‑lot text requires two additional independently accessible parking spaces in addition to § 17.30.230 minima).
  • Recreational vehicle park standards (RDMC § 17.30.290) — paved spaces, internal circulation and spacing requirements.
  • Principal zones (list of zone designations: SR, UR, TC, NC, CC, R, PF, S, I, IC, NR, SM) — RDMC § 17.15.010.
  • Ministerial approvals / parking limits for state‑streamlined housing — RDMC § 17.35.040(d).

Sources

Retrieved passages

  • Rio Dell Zoning Code (section are) High relevance
  • Rio Dell Zoning Code (section and) High relevance
  • Rio Dell Zoning Code (section shall) High relevance
  • Rio Dell Zoning Code (section of) High relevance
  • Rio Dell Zoning Code (section of) Medium relevance
  • Rio Dell Zoning Code Medium relevance
  • Rio Dell Zoning Code (Section 18009.3) Medium relevance
  • Rio Dell Zoning Code Medium relevance
  • Rio Dell Zoning Code (§ 4) High relevance
  • Rio Dell Zoning Code (section for) High relevance
  • CBC § 4 (Title 25) Medium relevance
  • Rio Dell Zoning Code (§ 17.30.290.) Medium relevance
  • Rio Dell Zoning Code (§ 66314) Medium relevance
  • Rio Dell Zoning Code (section of) Medium relevance
  • Rio Dell Zoning Code (Title 17.) Medium relevance
  • Rio Dell Zoning Code (section may) Medium relevance
  • Rio Dell Zoning Code (section may) Medium relevance
  • California Building Code (title or) Medium relevance
  • Rio Dell Zoning Code (chapter or) Medium relevance
  • Rio Dell Zoning Code Medium relevance
  • CRC § 130 Medium relevance

Cited sections

Frequently asked questions

What are the basic off‑street parking counts for a single‑family home in Rio Dell?

Single‑family and duplex units require 2 off‑street spaces per dwelling unit according to the city's parking schedule in RDMC § 17.30.230(17). Required residential driveway surfacing exceptions (gravel allowed except the first 25 ft from a paved street) are in § 17.30.230(7).

How many bicycle parking spaces must I provide for a small retail shop?

Bicycle parking requirements are tied to vehicle parking totals in RDMC § 17.30.230(19). For example, a lot with 3–25 vehicle spaces must provide 3 bicycle spaces; 26–50 vehicle spaces require 5 bicycle spaces. Bicycle stalls must be at least 6 ft × 2 ft and secure.

Do loading berths have a standard size in Rio Dell?

Yes. Off‑street loading spaces must meet minimum dimensions of 11 ft width × 35 ft length with 14 ft vertical clearance; siting and screening rules are in RDMC § 17.30.230(21).

Can I use compact parking stalls to meet required counts?

Compact stalls are allowed but limited: no compact stalls in parking areas with fewer than 12 spaces; where allowed, up to 25% of the lot's spaces may be compact. Stall widths and lengths for standard vs. compact stalls are in § 17.30.230(6).

Are there accessible parking (ADA) rules in the Rio Dell zoning code?

Yes — RDMC § 17.30.230(18) sets accessible parking size and quantity: accessible stalls ≥9 ft × 18 ft, van access aisles 8 ft, and one accessible stall for 1–25 total spaces with one additional for each 25 thereafter. However, building/code specifics for signage and slope must also follow state accessibility and building code (consult the California Building Standards Code).

What if my project can't physically fit the required parking?

The Community Development Director (in consultation with Public Works) may approve exceptions to the amount or location of off‑street parking when justified by site constraints, geographic location, topography, historic structures, or proximity to transit — see § 17.30.230(4–5). Prepare evidence demonstrating why the exception is warranted.

Do parking rules change for ministerial, state‑streamlined housing projects?

Yes. For ministerially approved projects under the State Streamlined Ministerial Approval Process or other state housing laws, the City will not require parking beyond the maximum ratios specified by state law; see RDMC § 17.35.040(d) for the local implementation note.

Are there Rio Dell rules that affect RV / boat storage on parcels in the Town Center?

Yes. RDMC § 17.30.230(2)(d) restricts long‑term storage/parking of RVs, boats and trailers; storage longer than 24–72 hours is only allowed if fully on the property and not within the public right‑of‑way, and along Wildwood Avenue special limits apply. Check that your parcel is outside the prohibited frontage or complies with the on‑lot location requirement.

Does Rio Dell require parking lot landscaping and screening?

Yes. Parking lots with three or more spaces (non‑single‑family residential) require interior landscaping, perimeter screening from streets and adjoining properties, and a landscaped buffer strip adjacent to public streets (minimum 6 ft depth), per RDMC § 17.30.230(12–13).

Where are the parking rules written in the code I should cite on plans?

Primary parking requirements are in § 17.30.230 (all subsections 1–21 cover the full program). Cite that section for tabulating required spaces, dimensions, surfacing, bicycle/motorcycle/accessible spaces, loading, and exceptions.

My lot is a flag lot — anything special about parking?

Yes. The flag‑lot development standards specify that, in addition to the minima in § 17.30.230, two additional independently accessible parking spaces must be provided because of limited on‑street availability (see the flag‑lot standards in Chapter 17.30). Confirm the flag‑lot provisions for the current section number in the ordinance text.

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