East Palo Alto — Overlay Districts

Last reviewed: July 2, 2026

Overview

East Palo Alto uses overlay or combining zones to layer special regulations on top of base zoning. The primary overlay documented in the Development Code is the Ravenswood Specific Plan Overlay (RSP) and its subdistricts; overlay rules are a supplement to the base zone rules and to the City’s zoning map. The Development Code explains how overlays interact with base standards and points applicants to the specific plan for subdistrict rules. See § 18.06.020 for the overlay/combining-zone authority and § 18.18.020 for the RSP establishment.

District-by-district breakdown (Ravenswood Specific Plan Overlay Subdistricts)

The Development Code establishes the Ravenswood Specific Plan Overlay District and explicitly divides it into subdistricts; each subdistrict is described in § 18.18.020 and incorporated into the Development Code by reference (the RSP document and Figure 6‑1 contain the map and detailed standards). Where the Development Code text summarizes the subdistrict purpose or allowed uses, that language is cited below. Numeric, site-level standards (lot-by-lot setbacks, FAR, building envelopes) are held in the RSP and/or underlying zone and must be checked in the RSP or the Official Zoning Map; when those numeric figures are not reproduced in the retrieved Development Code excerpts, the entry says "Not found in retrieved materials" and points you to verify with the RSP. Always verify on the Official Zoning Map before design work. § 18.18.020.

4 Corners Gateway — 4C

• Purpose: The 4C subdistrict is intended to support a compact, enlivened downtown centered at University Avenue and Bay Road with multi‑story mixed‑use buildings containing ground-floor retail/community uses and upper‑floor housing. § 18.18.020 (B)(1).
• Typical permitted uses: ground-floor retail, community facilities, upper‑floor apartments/condos; mixed-use buildings are the normative form. § 18.18.020.
• Key dimensional standards: Numeric building envelopes, FAR, setbacks and permitted heights for sites within 4C are set in the Ravenswood Specific Plan (RSP) and/or applicable base zone standards; Not found in retrieved materials in this Development Code excerpt—verify in the RSP and on the Official Zoning Map. § 18.18.010(B).

Bay Road Central — BRC

• Purpose: BRC makes Bay Road a pedestrian‑oriented mixed‑use corridor connecting 4 Corners to Cooley Landing; it encourages retail/storefront offices on the ground floor with housing above and performance/nonprofit uses. § 18.18.020 (B)(2).
• Typical permitted uses: retail, storefront offices, nonprofit uses, performing arts; mixed-use, pedestrian-supportive development. § 18.18.020.
• Key dimensional standards: See the RSP and the Development Code chapters on general development standards; RSP numeric standards not reproduced in the retrieved materials—verify with the RSP. § 18.18.010(B).

Ravenswood — Employment Center — R-EC

• Purpose: R-EC supports a range of job‑creating uses, especially high‑quality research & development (R&D) and similar employment centers. § 18.18.020 (B)(3).
• Typical permitted uses: R&D, offices, some light production/distribution/repair uses provided they do not negatively affect neighbors. § 18.18.020.
• Key dimensional standards: Use and site standards for R-EC are established in the RSP and by applicable base zone chapters (e.g., commercial/office development standards); numeric RSP standards are Not found in retrieved materials—verify with the RSP. § 18.18.010(B).

Industrial Transition — IT

• Purpose: IT accommodates light industrial uses and live‑work in locations adjacent to single‑family neighborhoods while requiring development that avoids adverse impacts on residences. § 18.18.020 (B)(4).
• Typical permitted uses: light manufacturing, repair businesses, live‑work units, low‑intensity industrial activities that minimize traffic/noise. § 18.18.020.
• Key dimensional standards: Check RSP and Development Code chapters (setbacks, screening, hours); the Development Code also applies sign orientation and size rules in Industrial Transition (see sign table). Numeric RSP thickness of standards: Not found in retrieved materials—verify with the RSP and Official Zoning Map. § 18.18.020.

Waterfront Office — WO

• Purpose: WO is intended to support Class A office development with limited supporting retail in the Plan Area. § 18.18.020 (B)(5).
• Typical permitted uses: professional offices, limited retail/support uses for office workers. § 18.18.020.
• Key dimensional standards: See RSP for site‑specific regulations; not reproduced in retrieved Development Code excerpts—verify with RSP. § 18.18.010(B).

Urban Residential — UR

• Purpose: UR promotes moderate‑density single‑ and multi‑family housing, including small‑lot detached homes, townhomes, duplexes through mid‑rise multi‑family. § 18.18.020 (B)(6).
• Typical permitted uses: small-lot single-family, attached townhomes, duplexes, triplexes, four‑plexes, apartments/condos. § 18.18.020.
• Key dimensional standards: Base residential development standards (setbacks, height adjustments above 18 ft, open space rules) in the Development Code apply; see § 18.10.030 and § 18.22.010. Specific UR numeric envelopes in the RSP: Not found in retrieved materials—verify with RSP.

University Village — UV

• Purpose: UV preserves and enhances the University Village neighborhood character (predominantly single‑family plus related public uses). § 18.18.020 (B)(7).
• Typical permitted uses: single‑family homes, schools, parks, and related public uses. § 18.18.020.
• Key dimensional standards: Governed by residential chapters and the RSP; numeric standards not reproduced in retrieved materials—verify with RSP. § 18.18.010(B).

Ravenswood — Open Space — R-OS

• Purpose: R-OS is reserved for conservation/open space, parks, linear parks and similar public open space within the RSP. § 18.18.020 (B)(8).
• Typical permitted uses: parks, conserved open space, public access improvements. § 18.18.020.
• Key dimensional standards: Open‑space standards and required dedications are in the RSP / Public Works conditions; numeric figures not reproduced in the Development Code excerpts—verify with the RSP. § 18.18.010(B).

Ravenswood — Flex Overlay — R-FO

• Purpose: The R-FO (Flex Overlay) provides alternative development options to accommodate high‑quality office buildings with a limited range of low‑impact manufacturing/repair. § 18.18.020 (B)(9).
• Typical permitted uses: professional offices, limited low‑intensity manufacturing/repair compatible with offices. § 18.18.020.
• Key dimensional standards: The RSP and R‑FO provisions establish the specific limits and options; numeric choices are in the RSP and are Not found in retrieved materials—verify with the RSP. § 18.18.010(B).

At-a-glance table — RSP subdistricts and code references

Most decision-relevant standards (example: signs in RSP subdistricts)

The Development Code reproduces sign limits tied to RSP district keys. These are concrete numerical standards available in the Development Code sign tables (useful for façade and freestanding sign sizing). Example values below are taken from the Code’s sign tables and should be checked against the Official Zoning Map and RSP for site application. See Chapter 18.32 (sign regulations) and the Zoning District Key for the RSP district labels.

(These are sample, decision-relevant numeric items that the Code includes; other site-specific metrics—FAR, heights, setbacks—are controlled by the RSP and/or base zone tables and must be confirmed in the RSP or the specific zone tables in Title 18.)

How overlays interact with base rules — practical takeaways

• Overlays are a supplement: the overlay/combining zone adds special rules in addition to the underlying base zone; where a conflict exists the City generally applies the most restrictive standard unless otherwise provided. See § 18.06.020.
• The RSP is an incorporated specific plan: the RSP contains detailed architectural/design guidelines, site development standards and a Table 6‑1 (uses and permit requirements) that the Code references. Where the Development Code defers to a specific plan, applicants must follow the RSP text/figures as adopted. See § 18.18.010 and § 18.18.020.
• Citywide development standards (setbacks, height rules, corner‑vision triangles, landscaping, parking and signage) remain applicable; consult the chapters on development standards, parking, and Chapter 18.22 for rules that apply across zones. § 18.22.010.

Checklist — what an applicant must verify before applying

• Confirm overlay designation on the Official Zoning Map and identify which RSP subdistrict (e.g., 4C, BRC, IT) applies to the parcel. § 18.06.030.
• Read the Ravenswood Specific Plan (RSP) subdistrict standards and Figure 6‑1 (uses, Table 6‑1) because the RSP controls specific development outcomes. § 18.18.020.
• Confirm applicable base zone development standards (setbacks, height, FAR) and site‑wide rules in Chapter 18.10–18.16 and Chapter 18.22; for design/concept review consult design review. § 18.22.010.
• Check sign allowances for the RSP district labels in Chapter 18.32 and apply for sign permits if needed. § 18.32.
• Confirm parking requirements in parking (Chapter 18.30) as they may vary by overlay or by incentives/density‑bonus decisions. § 18.36 (density bonus guidance).
• If proposing ADUs, confirm overlay interaction with ADU rules in Title 18 and the statewide California ADU law and the local ADU guidance. § 18.10–18.96 as applicable.
• For any requested modifications, evaluate whether a Variance or Minor Variance is required (see variance limits such as max percentage adjustments). § 18.90.030.

Risks & Ambiguities

Plain-English Summary

East Palo Alto’s main overlay in Title 18 is the Ravenswood Specific Plan Overlay (RSP), split into subdistricts such as 4C, BRC, R-EC, IT, and WO; the RSP describes what uses and forms are expected in each subdistrict, while the rest of Title 18 (setbacks, parking, signs, design review) still applies—always confirm the subdistrict on the Official Zoning Map and read the RSP for the numeric site standards before you design. § 18.18.020 and § 18.06.020.

Source References

• City of East Palo Alto Development Code — Ravenswood Specific Plan Overlay / Subdistricts, § 18.18.020.
• City of East Palo Alto Development Code — Establishment of Zones / Overlay/Combining Zones, § 18.06.020.
• City of East Palo Alto Development Code — Site Planning & General Development Standards (setbacks, applicability), § 18.22.010.
• City of East Palo Alto Development Code — Sign regulations and sign tables (district keys for 4C, BRC, REC, IT, WO), Chapter 18.32.
• City of East Palo Alto Development Code — Continuation and expiration of existing interim use permits (RSP). § 18.18.020(C).
• City of East Palo Alto Development Code — Variances and Minor Variances (limits and review authority), Chapter 18.90.

Information Gaps

• The Development Code excerpts retrieved describe subdistrict purposes and refer to the RSP but do not reproduce the full numeric development standards (parcel‑by‑parcel setbacks, FAR, exact height envelopes) for the RSP subdistricts. Not found in retrieved materials: the detailed numeric RSP tables/figures (e.g., Figure 6‑1 and Table 6‑1 within the adopted Ravenswood Specific Plan). Verify those specifics with the City’s RSP PDF and the Official Zoning Map. § 18.18.010(B).

Retrieved passages

• East Palo Alto Zoning Code (Title 18) High relevance show source text
• East Palo Alto Zoning Code (chapter serves) High relevance show source text
• East Palo Alto Zoning Code (Title 18) High relevance show source text
• East Palo Alto Zoning Code (Title 18) High relevance show source text
• East Palo Alto Zoning Code (Title 18) High relevance show source text
• East Palo Alto Zoning Code (Title 18) High relevance show source text
• East Palo Alto Zoning Code (Title 18) High relevance show source text
• East Palo Alto Zoning Code (Title 18) High relevance show source text
• East Palo Alto Zoning Code (Chapter 18.28) High relevance show source text
• CFC § 50093.5 (Section 50093.5.) Medium relevance show source text
• East Palo Alto Zoning Code (Title 18) Medium relevance show source text
• East Palo Alto Zoning Code (Title 18) Medium relevance show source text

Cited sections

• City of East Palo Alto Development Code — **Ravenswood Specific Plan Overlay / Subdistricts**, **§ 18.18.020**. (§ 18.18.020)
• City of East Palo Alto Development Code — **Establishment of Zones / Overlay/Combining Zones**, **§ 18.06.020**. (§ 18.06.020)
• City of East Palo Alto Development Code — **Site Planning & General Development Standards (setbacks, applicability)**, **§ 18.22.010**. (§ 18.22.010)
• City of East Palo Alto Development Code — **Sign regulations and sign tables** (district keys for 4C, BRC, REC, IT, WO), Chapter **18.32**.
• City of East Palo Alto Development Code — **Continuation and expiration of existing interim use permits (RSP)**. **§ 18.18.020(C)**. (§ 18.18.020)
• City of East Palo Alto Development Code — **Variances and Minor Variances** (limits and review authority), Chapter **18.90**.
• EastPaloAlto_ZoningCode.md

• Official East Palo Alto code library