Local zoning · Richmond

Richmond — Overlay Districts

Overlay Districts under the Richmond local zoning and planning code, with the controlling citations.

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Last reviewed: July 2, 2026

Overview

Richmond’s overlay districts are special zoning layers that sit on top of the city's base zoning and impose additional rules or incentives for geographically- or subject‑specific purposes (for example creek protection, historic preservation, or neighborhood conservation). Overlay rules are combined with the base district and the more restrictive provisions govern; they may be mapped on the Zoning Map or adopted first as regulatory text and mapped later. See the city’s zoning organization for context in the Richmond zoning map and code. § 15.04.301.010 ; Table 15.04.101.060‑B (Overlay Zoning Districts) .

Below is a Richmond‑specific, ordinance‑grounded reference that breaks each overlay down by purpose, decision‑relevant rules, where it applies, and practical next steps for applicants.

How to read this page

  • Bolded district names (for example -CP) and bolded numbers are taken directly from the Richmond Zoning and Subdivision Regulations.
  • Each requirement or quoted rule is grounded in the Richmond ordinance with the controlling code citation (the § number) and the file citation from the retrieved code text.
  • For procedural items such as design review, parking, or development standards referenced here, consult the corresponding Richmond pages: Richmond Zoning, Richmond Development Standards, Richmond Design Review, Richmond Parking, Richmond ADUs, and Richmond Historic Preservation (first natural mention of each topic is linked inline).

Links in the text (first natural mention of each topic):

District-by-district breakdown

Note: overlays are applied in addition to the base zoning district; unless the overlay text specifically changes uses or dimensional standards, the underlying base district’s rules remain in effect but the more restrictive rule applies. See § 15.04.301.010.

-CP — Creek Protection Overlay District

  • Purpose: Preserve and enhance creeks and riparian corridors, require best management practices for construction and maintenance, promote daylighting of culverted creeks where feasible, and secure adjacent lands as permanent open space or easements where appropriate. § 15.04.302.010 .
  • Typical permitted uses: The ordinance applies its standards to development and redevelopment affecting creeks/riparian corridors shown in the General Plan maps and Figure 15.04.302.030; uses follow the base district but any work within a creek or creek buffer triggers overlay rules and discretionary review. § 15.04.302.010 .
  • Key regulatory features / dimensional controls:
    • Required creek determinations and mapping procedures (creek boundaries are established per the code and General Plan figure). § 15.04.302.020 — Not fully reproduced in the provided excerpts; see the ordinance for mapping details. .
    • Culverts, riprap and in‑channel structures are generally prohibited unless no feasible alternative; an administrative use permit is required for walls, culverts, bulkheads, or riprap in a creek. § 15.04.302.070 .
    • Construction monitoring, inspection, maintenance and long‑term funding/monitoring programs are required; the city can require dedication of easements or fee interests for long‑term management. § 15.04.302.080 .
  • Where it applies: To all creeks and riparian systems as defined by the General Plan and Figure 15.04.302.030; property‑specific creek determinations are made under the overlay procedures. § 15.04.302.010–.020 .
  • Practical note: projects proposing any in‑channel work (including bank stabilization, culvert removal or replacement, flood control or daylighting) should budget for biological surveys, parallel state/federal permits, and an administrative use permit per § 15.04.302.070. .

-H and -L — Historic Districts and Landmarks Overlay Districts

  • Purpose: The Historic Overlay article is Richmond’s historic preservation ordinance—identify, protect, conserve, and enable adaptive reuse of historic resources; support economic incentives (Mills Act) and provide procedures for designation, conservation plans and enforcement. § 15.04.303.010 .
  • Typical permitted uses: Underlying base district uses remain allowed, but alterations/demolition/major changes are subject to the Historic Preservation Commission (HPC) review and standards in the article; designation does not repeal other code requirements. § 15.04.303.040 .
  • Key controls and standards:
    • Overlay mapping: an -H or -L suffix is added to the base zoning map symbol when adopted; designations may be applied to buildings, structures, sites or areas by Council action after HPC recommendation. § 15.04.303.040 .
    • Designation criteria: the code lists historical/architectural criteria (e.g., exemplifies historic elements, associations with persons/events, architectural significance) used to justify -H/-L designations. § 15.04.303.060 .
    • Optional Historic District Conservation Plans and design standards may be required/encouraged prior to rezoning to an -H overlay. § 15.04.303.070 .
    • Mills Act: properties in -H/-L overlays are eligible for Mills Act contracts; the code describes contract term, application, required provisions and inspection/recordation routines. § 15.04.303.160 and § 15.04.303.150 (enforcement) ; § 15.04.303.160 and detailed Mills Act provisions are set out in the article. .
  • Where it applies: To resources listed on the Richmond Historic Register or areas meeting the designation criteria; the overlay can be combined with any base district. § 15.04.303.040–.070 .
  • Practical note: any exterior alteration, relocation, demolition or significant change to a designated historic property will be reviewed under the historic article; applicants should consult the HPC early and review the conservation plan provisions. § 15.04.303.070–.150 .

-IS — Interim Study Overlay District

  • Purpose: Allow discretionary (or administrative in some subareas) review where zoning is under study or pending a specific plan so development does not preempt plan decisions. § 15.04.304.010 .
  • Typical permitted uses: Uses in the IS district may follow the base district, but establishment of a new use or expansion may require a conditional use permit (or administrative use permit in IS‑1/IS‑2). § 15.04.304.040 .
  • Key features:
    • Zoning map designator: IS districts carry an “‑IS” suffix and are numbered by ordinance; prior to rezoning, a study plan must be approved that identifies issues to be resolved. § 15.04.304.020 .
    • Known IS areas: IS‑1 (Form‑Based Code study area, downtown and adjacent corridors), IS‑2 (Richmond Bay Specific Plan study area), IS‑3 (Point Molate study area). These were established by ordinance and may have expiration language. § 15.04.304.030 .
    • Expiration/renewal: ordinances establishing an IS district must contain a termination date (commonly one or two years) unless extended by Council action. § 15.04.304.060 .
  • Where it applies: Specific study areas shown and described in the ordinance and associated study plans; IS may be combined with any base district. § 15.04.304.020–.030 .
  • Practical note: in IS areas expect extra discretionary review, potential limits on new intensification, and the possibility the IS designation will expire or be replaced by a specific plan—verify current map status with Planning. § 15.04.304.060 .

-NC — Neighborhood Conservation Overlay District

  • Purpose: Conserve or revitalize older residential neighborhoods with distinctive character by adopting a Neighborhood Conservation Plan (NCP) that can alter base district standards to preserve character. § 15.04.305.010 .
  • Eligibility and minimum area: An -NC district must include a contiguous area of minimum 15 acres and at least 25 separate lots; additional criteria include an age threshold and a minimum of 75% development in the proposed area. § 15.04.305.020 and § 15.04.305.030 .
  • Typical permitted uses: All permitted and conditional uses allowed in the underlying base district remain allowed unless the Neighborhood Conservation Plan specifically limits or prohibits a use. § 15.04.305.070 .
  • Key controls (setbacks, density, height):
    • The NCP specifies maximum residential density, setbacks, and height; where the NCP conflicts with the base district, the NCP controls. § 15.04.305.080(A–C) .
    • Existing lots/structures at the time of adoption are not automatically nonconforming; additions/alterations must comply with the NCP unless a waiver is approved. § 15.04.305.090 .
  • Where it applies: Only where the City Council adopts a zoning map amendment to add an ‑NC designator together with an approved Neighborhood Conservation Plan. § 15.04.305.030–.060 .
  • Practical note: if your property is in an ‑NC district, the NCP often sets the critical dimensional standards (setbacks, height, density); do not assume base district numbers apply—consult the adopted NCP. § 15.04.305.080 .

-S — Shoreline Overlay District

  • Purpose: Implement General Plan shoreline policies to protect water quality, wildlife/habitats, and provide public shoreline access where appropriate. § 15.04.306.010 .
  • Typical permitted uses: Development that affects shoreline and tidelands is regulated to ensure protection of habitat and water quality and to provide public access consistent with the General Plan; underlying uses remain subject to overlay standards. § 15.04.306.010–.020 — specific use matrix excerpt not found in the retrieved snippets. .
  • Key controls: Shoreline development must protect water quality and habitat and may be subject to specialized public access, setback, and resource protection measures in the overlay text and General Plan maps. § 15.04.306.010 .
  • Where it applies: To shoreline and tideland areas identified in the General Plan and the zoning documents (mapping described in the ordinance). § 15.04.306.020 — full mapping details not reproduced in the retrieved excerpts. .
  • Practical note: shoreline projects will typically require coordination with state and federal resource agencies in addition to city review; check the overlay mapping and the General Plan shoreline policies before design. § 15.04.306.010–.020 .

Quick comparison table — overlays at a glance

Overlay (map symbol) Primary purpose / decision trigger Decision‑relevant rule(s) (short) Code reference
-CP (Creek Protection) Protect and restore creek corridors; any work in/near a creek triggers overlay controls In‑channel work generally prohibited without admin use permit; construction monitoring/maintenance programs required § 15.04.302.010; § 15.04.302.070; § 15.04.302.080
-H / -L (Historic / Landmark) Preserve historic resources; HPC review for changes; Mills Act eligibility Designation criteria; conservation plans; Mills Act application and contract rules; enforcement/penalties § 15.04.303.010; § 15.04.303.060; § 15.04.303.160
-IS (Interim Study) Hold areas pending planning (specific plan/FBC); discretionary review Study plan prerequisite; IS may require conditional or administrative permits; IS ordinances include expiration § 15.04.304.010–.030; § 15.04.304.060
-NC (Neighborhood Conservation) Protect neighborhood character via Neighborhood Conservation Plan (NCP) NCP sets density, setbacks, height; where conflict exists NCP controls; minimum 15 acres/25 lots to form district § 15.04.305.010; § 15.04.305.020; § 15.04.305.080
-S (Shoreline) Protect shoreline, habitat and public access Shoreline protections and public access measures in the overlay; coordinate with state/federal permits § 15.04.306.010–.020

Checklist

  • Confirm whether the property is within any overlay on the Richmond Zoning Map (check for -CP, -H/-L, -IS, -NC, -S) per § 15.04.101.060‑B and the Zoning Map.
  • Read the overlay article that applies to your parcel: § 15.04.302 for -CP, § 15.04.303 for -H/-L, § 15.04.304 for -IS, § 15.04.305 for -NC, § 15.04.306 for -S.
  • If property is in -NC, obtain and apply the Neighborhood Conservation Plan standards for setbacks, height and density (NCP controls where conflicting with base zoning). § 15.04.305.080
  • If work affects a creek or riparian corridor: prepare biological resources documentation, a construction management plan, and expect permit coordination with state/federal resource agencies; administrative use permit is required for culverts/major in‑channel work. § 15.04.302.070–.080
  • If property is designated -H / -L, engage the Historic Preservation Commission early; evaluate Mills Act eligibility and required conservation standards. § 15.04.303.070; § 15.04.303.160
  • In -IS areas, confirm whether the IS designation is still active or has been superseded by a specific plan (IS ordinances may have automatic expiration clauses). § 15.04.304.060
  • Check whether your project requires design review and how overlay standards interact with those reviews. Consult the city’s design review rules early. Richmond Design Review
  • Verify applicable development standards (setbacks, buffering, parking) using the Richmond Development Standards and Parking pages; overlays can change setbacks and densities. Richmond Development Standards Richmond Parking

Risks & Ambiguities

Issue Why it matters What to verify
Overlay mapping vs. text Some overlays are adopted as text first and mapped later; whether the overlay applies to your parcel depends on the map and Council action Verify the current Zoning Map and relevant rezoning ordinance; confirm overlay suffix on parcel (‑CP, ‑H, ‑NC, etc.). § 15.04.301.020–.030
Numeric standards not repeated in overlay text Many overlays refer projects back to base district or to separate plans (e.g., NCP or conservation plan) for concrete numbers If overlay references a Neighborhood Conservation Plan or FBC, pull that plan for the numeric setbacks, heights and densities. § 15.04.305.080
Conflicts between overlay and base district Overlay text says "the more restrictive controls will govern." Misreading which standard is more restrictive can cause re‑submittal delays Compare overlay language to the underlying base district standards and the Richmond Development Standards; when in doubt, confirm with the Zoning Administrator. § 15.04.301.010
State/federal permits (creek/shoreline) Creek and shoreline work commonly require parallel permits (Corps, State water boards, CDFW) Budget time and consultant costs for concurrent permitting and coordinate submittal schedules. § 15.04.302.070; § 15.04.302.080
Mills Act complexity for historic properties Mills Act contracts include inspection and recorded obligations that run with title; failing to follow required treatment may trigger enforcement Review § 15.04.303.160 for application steps and contract term; verify the Secretary of the Interior standards and State Historic Building Code requirements. § 15.04.303.160
IS district expiration or supersession IS districts are interim by design and often expire or are replaced by specific plans Confirm whether the IS designation and its study plan still apply or whether a specific plan/FBC has superseded it. § 15.04.304.060

Plain-English Summary

Richmond’s overlays (listed as -CP, -H/-L, -IS, -NC, -S) layer additional rules on top of your base zoning; they usually do not change allowed uses unless the overlay expressly does so—instead they add site‑specific controls (e.g., creek protections, historic review, neighborhood plans) that you must follow in addition to the base district rules. Verify the overlay on your parcel, read the specific overlay article cited below, and consult the applicable Neighborhood Conservation Plan, conservation plan, or study plan where the overlay points to one. § 15.04.301.010; § 15.04.305.080; § 15.04.302.070

Information Gaps (what the retrieved materials did not show)

  • Exact creek buffer widths, numeric shoreline setbacks, or a complete list of allowed/prohibited uses specific to each overlay mapping polygon (Figure references exist but the specific figures or numeric tables were not included in the retrieved excerpts). Not found in retrieved materials. Verify with the jurisdiction.
  • Map figures (for example Figure 15.04.302.030) and the current, up‑to‑date Zoning Map image were not included in the text excerpts; the exact overlay boundaries must be verified on the city's official zoning map. Not found in retrieved materials.
  • Any local implementation rules or administrative checklists the Planning Department uses for overlay review (city practice documents, application forms) were not included in the retrieved ordinance excerpt. Not found in retrieved materials.

Source References

  • Richmond Municipal Code, Chapter 15.04 — Zoning and Subdivision Regulations: Series 300 — Overlay District Regulations, § 15.04.301.010 (Purpose & applicability). § 15.04.301.010
  • ARTICLE 15.04.302 — Creek Protection Overlay District, § 15.04.302.010, § 15.04.302.070, § 15.04.302.080 (creek standards, culverts, monitoring). § 15.04.302.010; § 15.04.302.070; § 15.04.302.080
  • ARTICLE 15.04.303 — Historic Districts & Landmarks Overlay (‑H, ‑L), including designation criteria, procedures, and Mills Act details. § 15.04.303.010; § 15.04.303.040; § 15.04.303.060; § 15.04.303.070; § 15.04.303.150; § 15.04.303.160
  • ARTICLE 15.04.304 — Interim Study Overlay District (‑IS), IS‑1/IS‑2/IS‑3 study areas and expiration rules. § 15.04.304.010–.030; § 15.04.304.060
  • ARTICLE 15.04.305 — Neighborhood Conservation Overlay District (‑NC), including eligibility, plan contents, and NCP controls on setbacks/density/height. § 15.04.305.010; § 15.04.305.020; § 15.04.305.050; § 15.04.305.070; § 15.04.305.080; § 15.04.305.090
  • ARTICLE 15.04.306 — Shoreline Overlay District (‑S). § 15.04.306.010–.020
  • Table: Overlay Zoning Districts (Table 15.04.101.060‑B) listing CP, IS, H/L, NC, S. Table 15.04.101.060‑B

Sources

Retrieved passages

  • Richmond Zoning Code (Article XV) High relevance
  • Richmond Zoning Code (Article 15.04.814) High relevance
  • Richmond Zoning Code (§ I) High relevance
  • Richmond Zoning Code (§ I) High relevance
  • Richmond Zoning Code (Article 15.04.803) High relevance
  • Richmond Zoning Code (ARTICLE 15.04.304) High relevance
  • Richmond Zoning Code (Article 15.04.104) High relevance
  • Richmond Zoning Code (Article 15.04.814) High relevance
  • Richmond Zoning Code (§ 1) Medium relevance
  • Richmond Zoning Code Medium relevance
  • Richmond Zoning Code (§ I) Medium relevance
  • CBC § 21084.1 (article are) Medium relevance
  • Richmond Zoning Code (section shall) Medium relevance

Cited sections

Frequently asked questions

What overlays might affect a single‑family lot in Richmond?

Most frequently the -CP (Creek Protection), -NC (Neighborhood Conservation), and -H/-L (Historic) overlays affect residential lots; which overlay applies depends on the Zoning Map. Confirm the parcel’s map symbol (the overlay is added as a suffix, e.g., RL‑1‑NC) and then read the corresponding article: see § 15.04.101.060‑B and the overlay article for details. § 15.04.101.060‑B; § 15.04.305.010

If my property is in an **-NC** district, which rules control setbacks and height?

The Neighborhood Conservation Plan (NCP) adopted with the ‑NC overlay specifies maximum residential density, setbacks and height; when the NCP conflicts with the underlying base district, the NCP controls. See § 15.04.305.080. § 15.04.305.080

Do overlays change what land uses are allowed on a site?

Generally overlays add requirements or restrictions but do not automatically create whole new use categories; permitted and conditional uses of the underlying base district remain allowed unless the overlay (for example an NCP) expressly limits or prohibits a particular use. See § 15.04.301.010 and § 15.04.305.070. § 15.04.301.010; § 15.04.305.070

Does a historic **-H / -L** overlay prevent demolition or give me tax benefits?

A designation subjects exterior changes and demolition to HPC review and can deter demolition by neglect; it also makes properties eligible for Mills Act contracts (tax incentive) if they are on the Richmond Historic Register and within an ‑H/‑L overlay. See the historic article and the Mills Act details. § 15.04.303.010; § 15.04.303.160

What happens if I need to place a culvert or bank stabilization in a creek?

Culverting and riprap are generally prohibited unless the applicant demonstrates no feasible alternative; an administrative use permit is required for walls, culverts or other structures within creeks and the city will require coordination with state/federal resource agencies and construction monitoring. § 15.04.302.070; § 15.04.302.080

Are there time limits on **-IS** designations?

Yes. Ordinances establishing an ‑IS district must contain a termination (one or two years, unless extended by Council). Always verify whether the IS designation is still in force or has been superseded by a specific plan or FBC. § 15.04.304.060

If an overlay is silent about parking or ADUs, which rules apply?

If the overlay does not specifically change parking or accessory dwelling unit rules, the underlying base district and the city's parking/development standards apply; you must therefore check the base district standards and Richmond’s development/parking rules. See § 15.04.301.010 (overlay adds rules to base zoning). Consult the city's parking page and the ADU page for procedural specifics. § 15.04.301.010

How do I find out whether my lot is mapped in a specific overlay?

Check the official Richmond Zoning Map and the Zoning Map amendment ordinances that added the overlay (the ordinance adopting an overlay will include the map designator and date of enactment). The overlay rules require map designators (e.g., “‑H” or “‑IS”) and a public notice process for designation. § 15.04.303.040; § 15.04.304.020

Who decides overlay designations and what public notice is required?

Overlay map amendments and new overlay ordinances are initiated by the Planning Commission or City Council (or by residents in some cases) and require public notice and hearings per the city’s amendment procedures; the zoning administrator posts public notice and notifies affected property owners when historic designations are proposed. § 15.04.301.020–.030; § 15.04.303.050

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