Oakland — Overlay Districts

Last reviewed: July 2, 2026

Overview

Oakland's zoning code uses combining/overlay zones (sometimes called "Combining Zones" or "District Zones") to layer special standards and procedures on top of base zoning. These overlays (for example the D‑KP medical center district, S‑13, S‑14, S‑17, and S‑19) modify permitted uses, development standards, and review processes for parcels where the city has specific policy goals. Read this page alongside the city's base zone standards in the Oakland Zoning and Oakland Development Standards pages for a complete project picture.

Important links (first natural mention): parking rules referenced below are in Oakland Parking; dimensional references tie into Oakland Development Standards; overlay-triggered design review references link to Oakland Design Review; historic/district preservation cross-references appear with Oakland Historic Preservation; landscaping requirements are in Oakland Landscaping and Screening; ADU rules are discussed on the Oakland ADUs page; and state technical standards live under the California Building Standards Code.

All ordinance citations below use the code § number from the Oakland Planning Code and reference the retrieved ordinance text. For original ordinance text and parcel-specific application, Verify with the jurisdiction.

How Oakland uses overlays (short synthesis)

• Overlays in Oakland are implemented as "Combining Zones" (S‑prefix chapters) or as special District Zones (D‑prefix chapters) that sit on top of the underlying base zone; the underlying zone's regulations generally remain in force except where the overlay explicitly modifies them (see § 17.99.010, § 17.101D.010) .
• Overlays can do at least three things: (1) change permitted uses and use-permit triggers, (2) change development standards such as height, setbacks, FAR or open-space requirements, and (3) create specific design review, affordability, or health‑and‑safety rules that apply before the underlying zone rules take effect (see § 17.101D.010; § 17.95.020; § 17.100A.010) .

District‑by‑District breakdown

D‑KP — Kaiser Permanente Oakland Medical Center District (overlay)

• Purpose: Establish standards and design review framework for the Kaiser Oakland campus and adjacent parcels included in the medical center plan (§ 17.101D.010) .
• How it applies: The D‑KP is applied as an overlay to properties in the project area; the existing base zoning stays in effect until a property owner consents and design review under D‑KP is approved — after that the D‑KP standards govern the parcel (§ 17.101D.010.C) .
• Typical permitted uses: The Chapter lists zone‑specific permitted and conditionally permitted activities in Table 17.101D.01; for the residential subarea D‑KP‑4, uses are limited while parcels remain part of the medical center, for example to single‑family and limited temporary housing uses (§ 17.101D.020; § 17.101D.030) .
• Key standards & review: Design Review under the D‑KP is a gating step that, once approved, substitutes the D‑KP standards for the underlying zoning on that parcel (§ 17.101D.010.C) . For the specific list of permitted and conditional uses consult Table 17.101D.01 in the D‑KP chapter (see § 17.101D.030) .

S‑13 — Affordable Housing Bonus (Combining Zone)

• Purpose: The S‑13 Combining Zone provides an optional local program to allow bonus height, relaxation of other development standards, and elimination of maximum residential density for eligible affordable housing projects; developers may opt to use S‑13 provisions instead of other density bonus programs but cannot combine options (§ 17.95.010 et seq.; § 17.95.020) .
• Typical permitted uses: Applies to residential developments seeking the by‑right residential approval pathway for qualifying affordable developments (see § 17.95.020) .
• Key dimensional standards: S‑13 allows bonus height and relaxations of listed site development standards when projects meet the chapter's affordability thresholds and other criteria (§ 17.95.010—.030) .
• Where it applies: The chapter establishes the S‑13 rules and states developers can opt into the S‑13 combining zone’s procedures; if an applicant does not opt in, the underlying base zone controls (§ 17.95.010) .

S‑14 — Prior Housing Element Sites / Minimum Density Combining Zone

• Purpose: The S‑14 Combining Zone sets minimum residential density requirements and provides a pathway for By‑Right Residential Approval for prior Housing Element site parcels when threshold affordability is met (§ 17.96.050—17.96.060) .
• Typical permitted uses: Residential development that meets the minimum density and affordability thresholds is eligible for by‑right treatment (§ 17.96.060) .
• Key standards: Minimum density = 70% of “Realistic Capacity” unless other affordability combinations apply; exceptions and calculation rules are in § 17.96.050 .
• Where it applies: Applies only on parcels identified as Prior Housing Element Sites on the Housing Sites Inventory (§ 17.96.050) .

S‑17 — Downtown Residential Open Space Combining Zone

• Purpose: S‑17 sets supplemental open‑space standards appropriate for high‑density downtown zones, providing categories like rooftop open space, widened sidewalks, and public plazas (§ 17.99.010—§ 17.99.040) .
• Typical permitted uses: Does not change use types; it supplements the underlying downtown zones with open‑space standards for residential development (§ 17.99.010) .
• Key standards: Defines categories (Private Usable Open Space, Public Ground‑Level Plazas, Widened Sidewalks, Rooftop Open Space) and requires combinations to meet usable open‑space standards per § 17.99.040—17.99.050 .
• Where it applies: The S‑17 may be combined with portions of any zone that lie within the Downtown District (§ 17.99.020) .

S‑19 — Health & Safety Protection Combining Zone (Hazardous Materials)

• Purpose: The S‑19 Combining Zone is intended to protect public health by regulating locations and development standards for activities using or storing hazardous materials and wastes (§ 17.100A.010) .
• Typical permitted uses: S‑19 imposes restrictions and special standards on industrial, commercial, and other activities that use hazardous substances; its definitions of hazardous material, hazardous waste and explosives are in § 17.100A.020 .
• Key standards: The chapter lists which base zones S‑19 can combine with and establishes handling, siting, and special permit standards (§ 17.100A.030) .
• Where it applies: S‑19 lists the zones with which it may be combined (for example HBX zones, certain Downtown zones, commercial/industrial mix zones) (§ 17.100A.030) .

Selected Other Combining/Overlay Rules to know

• Many D‑zones (Downtown and District Zones such as D‑CE, D‑CO, D‑GI) reference overlays like the S‑19 as applying to them, and include cross‑references to other chapters for parking, buffering, landscaping, and nonconforming uses (see examples in § 17.101E.112; § 17.101H.100) .
• Design review: Overlays frequently create or change design review applicability and procedures — see the general design‑review rules (e.g., § 17.136.038, § 17.136.035) for small, special, and regular project design review thresholds and processes (§ 17.136.035—§ 17.136.038) .
• Parking and ADUs: If an overlay affects parking or ADU allowances, the underlying parking rules in Chapter 17.116 and ADU-specific rules (for example parking exemptions and unit size limits referenced in Table 17.103.02) still apply unless the overlay says otherwise (see Table 17.103.02 notes; § 17.103 reference) .

Quick reference table — decision‑relevant overlay standards (examples)

Checklist — what an applicant must satisfy when an overlay applies

• Confirm whether the parcel is mapped into the overlay on the City Zoning Map (Verify with the jurisdiction).
• Read the overlay chapter text (e.g., § 17.101D.010 for D‑KP; § 17.95.010 for S‑13) to confirm whether the overlay is optional or mandatory for your proposed use .
• Confirm permitted vs. conditionally permitted uses in the overlay’s table (for D‑KP see Table 17.101D.01) .
• Determine if the overlay imposes extra review (Design Review tracks § 17.136.035/038) and budget time for that process .
• Check overlay‑specific development standards (height, setbacks, open space, density) and compare to base zone standards using Oakland Development Standards (Verify with the jurisdiction) .
• Confirm off‑street parking requirements or exemptions per Chapter 17.116 and ADU rules in Table 17.103.02 if the overlay affects housing or ADUs (see Oakland Parking and Oakland ADUs) .
• Check cross‑references: buffering, landscaping, nonconforming uses, performance standards mentioned in the overlay (e.g., Chapters 17.110, 17.114, 17.120, 17.124) .
• For hazardous materials or health‑safety overlays, verify compliance with the overlay’s definitions and siting lists (S‑19) .

Risks & Ambiguities

Plain‑English Summary

If your Oakland property falls inside an overlay/combining zone (for example D‑KP, S‑13, S‑17, S‑19, or S‑14) the overlay adds or changes rules on top of the usual zoning — it can change uses, add design‑review steps, or let you build a taller/denser project if you meet special criteria; always check the overlay chapter for exact tests and whether it’s optional or mandatory (see the cited §§ below) .

Information Gaps

• A parcel‑level overlay map showing exact parcels included in each combining/district zone: Not found in retrieved materials (Verify with the jurisdiction).
• Full text for every combining zone in Title 17 (we retrieved many chapters but not a consolidated overlay map or every S‑chapter): Not found in retrieved materials (Verify with the jurisdiction).
• Procedural timelines and submittal checklists specific to each overlay beyond the design‑review references: Not found in retrieved materials (Verify with the jurisdiction).

Source References

• Oakland Planning Code — D‑KP (Kaiser Permanente District), § 17.101D.010—.030
• Oakland Planning Code — S‑13 Combining Zone (Affordable Housing Bonus), § 17.95.010—.030
• Oakland Planning Code — S‑14 Combining Zone (Housing Element sites), § 17.96.050—.060
• Oakland Planning Code — S‑17 Downtown Residential Open Space Combining Zone, § 17.99.010—.050
• Oakland Planning Code — S‑19 Health and Safety Protection Combining Zone, § 17.100A.010—.030
• Oakland Planning Code — Design Review procedures (Small, Special, Regular), § 17.136.035—.038
• Oakland Planning Code — ADU and parking notes (table and parking exemptions), Table notes and § 17.103/17.116 (see Table 17.103.02 notes)

Retrieved passages

• Oakland Zoning Code (§ 2) Medium relevance show source text
• Oakland Zoning Code (§ 4) Medium relevance show source text
• Oakland Zoning Code (Chapter establishes) Medium relevance show source text
• Oakland Zoning Code (Title 17) Medium relevance show source text
• Oakland Zoning Code (Chapter shall) Medium relevance show source text
• Oakland Zoning Code (§ 5) Medium relevance show source text
• Oakland Zoning Code (Section 17.96.050) Medium relevance show source text
• Oakland Zoning Code (Chapter 17.116) Medium relevance show source text

Cited sections

• Oakland Planning Code — D‑KP (Kaiser Permanente District), **§ 17.101D.010—.030** (§ 17.101D.010)
• Oakland Planning Code — S‑13 Combining Zone (Affordable Housing Bonus), **§ 17.95.010—.030** (§ 17.95.010)
• Oakland Planning Code — S‑14 Combining Zone (Housing Element sites), **§ 17.96.050—.060** (§ 17.96.050)
• Oakland Planning Code — S‑17 Downtown Residential Open Space Combining Zone, **§ 17.99.010—.050** (§ 17.99.010)
• Oakland Planning Code — S‑19 Health and Safety Protection Combining Zone, **§ 17.100A.010—.030** (§ 17.100A.010)
• Oakland Planning Code — Design Review procedures (Small, Special, Regular), **§ 17.136.035—.038** (§ 17.136.035)
• Oakland Planning Code — ADU and parking notes (table and parking exemptions), Table notes and **§ 17.103/17.116** (see Table 17.103.02 notes) (§ 17.103)
• Oakland_ZoningCode.md

• Official Oakland code library