San Francisco — Design Standards

Last reviewed: July 6, 2026

Overview

San Francisco’s Design Standards establish objective, citywide rules for the form and frontage of new development, focusing on massing, stepbacks, ground-floor design, fenestration, and materials. For projects that qualify under California’s Housing Accountability Act (HAA), these standards are mandatory and used alongside the San Francisco Planning Code to shape buildings and streetscapes. Projects not subject to HAA rely on the City’s adopted design guidelines (Urban Design Guidelines, Residential Design Guidelines, and Ground Floor Residential Design Guidelines) to inform discretionary design review.

For HAA-eligible housing projects in San Francisco, apply the objective Citywide Design Standards first; where there’s any conflict, the Planning Code controls.

What the San Francisco Design Standards cover

• Applicability

  • The Design Standards are objective and “regulatory,” intended to be applied without subjective judgment; they complement but do not replace Planning Code controls on setbacks, height, and other development standards.
  • HAA-eligible projects (generally 2+ units or mixed-use projects ≥ two-thirds residential) are subject only to objective design standards, which in San Francisco means the Citywide Design Standards plus any objective Planning Code frontage/massing controls.
  • For non-HAA projects, staff applies the Urban Design Guidelines, Residential Design Guidelines, and Ground Floor Residential Design Guidelines during design review under Planning Code procedures.

• Citywide Design Standards — Topics (objective)

  • Site Design: Large sites, rear/side stepbacks, tall buildings, modulation, lightwells and side setbacks.
  • Architecture: façade articulation, ground-floor commercial, ground-floor residential, non-active frontages, blind walls, fenestration, residential lobby entries, materials.
  • These standards are cataloged and numbered in the document; projects must satisfy all applicable standards, and where standards differ from the Planning Code, the Code governs.

• Historic/Conservation context (Article 11)

  • Within Conservation Districts and other reviewed areas under Article 11, new construction and major alterations must be compatible with surrounding buildings in composition and massing, scale, materials/colors, and detailing/ornament; compatibility is determined per § 309.
  • Guidelines emphasize maintaining streetwall height, avoiding breaks in the property-line building rhythm, and using two- or three-part vertical compositions with a defined pedestrian base.

Street frontage, massing, and related Planning Code controls that pair with the Design Standards

• Street Frontage Requirements — § 145.1: Many districts require active, transparent, pedestrian-friendly ground floors by regulating setbacks of above-grade parking, loading entrances, active uses, ground-floor ceiling heights, street-facing spaces, and fenestration.
• Height sculpting on alleys — § 261.1 and horizontal mass reduction — § 270.1: Applied in multiple mixed-use/industrial districts to shape upper massing and reduce perceived bulk.
• Mid-block alleys — § 270.2: Required in certain districts to break up large blocks and improve pedestrian permeability.
• Special overlays may add objective stepbacks, streetwall articulation, and tower separation (e.g., Central SoMa SUD — §§ 132.4, 249.78).

For broader context on zoning districts and entitlements, see the San Francisco zoning & planning overview and use the San Francisco Permits & Forms hub to navigate submittals. Building and fire-life-safety remain under the California Building Standards Code and San Francisco Fire Code.

District-by-district: how objective Design Standards interact with common SF districts

Below, “Key dimensional controls” highlight Planning Code items that often interface with the Design Standards’ massing/frontage topics. Always check the parcel’s actual zoning map and any Special Use District.

NC-1 — Neighborhood Commercial Cluster

• Purpose and uses: Neighborhood-serving commercial clusters; housing is encouraged above the ground story; ADUs are permitted per § 207.1.
• Key dimensional controls: Typical height generally 40‑X; rear yard at dwelling levels: 25% lot depth (min 15 ft); front/side yards not required; street frontage controls required (§ 145.1; some streets require § 145.4 active commercial).
• Where it applies: Neighborhood commercial nodes citywide; subject to the Urban Design Guidelines for discretionary cases and objective Design Standards for HAA-eligible projects.

NCT-2 — Small-Scale Neighborhood Commercial Transit

• Purpose and uses: Transit-served corridors with neighborhood commercial and upper-story housing.
• Key dimensional controls: Height varies; rear yard at residential stories: 25% lot depth (min 15 ft); front/side yards not required; § 145.1 street frontage required; § 145.4 active commercial required on some streets; alley sculpting § 261.1.
• Where it applies: Transit-priority commercial streets.

NCT-3 — Moderate-Scale Neighborhood Commercial Transit

• Purpose and uses: Larger transit corridors with moderate scale mixed-use and housing.
• Key dimensional controls: Height varies; rear yard at dwelling levels: 25% lot depth (min 15 ft); front/side yards not required; § 145.1 frontage required; § 145.4 active commercial on certain streets; vehicular access restrictions on specified streets under § 155(r).
• Where it applies: Transit corridors such as Market/Church/Mission segments noted in controls.

Mission Bernal NCD — Neighborhood Commercial District

• Purpose and uses: Neighborhood-serving commercial with upper-story residential.
• Key dimensional controls: Generally 40‑X; rear yard at dwelling levels: 25% lot depth (min 15 ft); front/side yards not required; § 145.1 frontage required; § 145.4 active commercial on some streets.
• Where it applies: Mission/Bernal commercial corridors.

24th Street–Noe Valley NCD

• Purpose and uses: Local-serving retail village with housing above.
• Key dimensional controls: Generally 40‑X; rear yard at dwelling levels: 25% lot depth (min 15 ft); front/side yards not required; § 145.1 frontage required; active commercial not required citywide here.
• Where it applies: Along 24th Street in Noe Valley.

Union Street NCD

• Purpose and uses: Boutique commercial corridor with mixed-use buildings.
• Key dimensional controls: 40‑X; rear yard at dwelling levels: 25% lot depth (min 15 ft); front/side yards not required; § 145.1 frontage required; active commercial not required citywide here.
• Where it applies: Union Street corridor.

Chinatown Residential NCD

• Purpose and uses: Dense mixed-use neighborhood with strong preservation policies.
• Key dimensional controls: Heights vary (40‑X to 110‑G, per map); Sun Access Setbacks § 132.3 (e.g., 15 ft at specified heights); § 145.1 frontage required; § 145.3 may limit maximum street frontage per building.
• Where it applies: Chinatown residential-commercial core.

WMUG — Western SoMa Mixed Use–General

• Purpose and uses: Mixed-use with production and residential; subject to additional Western SoMa design standards.
• Key dimensional controls: Height varies by map; § 261.1 alley height sculpting; § 270.1 horizontal mass reduction; § 270.2 mid-block alleys; § 145.1 frontage required; front setbacks for residential governed by Ground Floor Residential guidelines.
• Where it applies: Western SoMa Special Use District area.

MUO — Mixed Use–Office (incl. Central SoMa SUD areas)

• Purpose and uses: Office/mixed-use with objective massing, setback, and tower separation overlays in Central SoMa.
• Key dimensional controls: § 261.1 alley sculpting; § 270.1 horizontal mass reduction; § 270.2 mid-block alleys; §§ 132.4 & 249.78 apply within Central SoMa SUD (setbacks, streetwall articulation, tower separation). § 145.1 frontage required.
• Where it applies: Central and South of Market mixed-use/office corridors.

Folsom Street NCT

• Purpose and uses: Transit-oriented neighborhood commercial along Folsom with tailored height controls.
• Key dimensional controls: Heights 65‑X to 75‑X; rear yard at dwelling levels: 25% lot depth (min 15 ft); front/side yards not required; § 145.1 frontage required.
• Where it applies: Folsom Street corridor in SoMa.

Street-frontage and massing hot‑spots (quick reference)

How the Design Standards read on the building

• Massing and stepbacks: Maintain prevailing streetwall height and break down long façades with bays and modulation; add stepbacks above the streetwall to limit perceived bulk.
• Street frontage: Place active, transparent uses and lobbies on the street; limit or recess parking/loading entries and manage ground-floor ceiling heights for pedestrian scale.
• Architecture and detailing: Use façade articulation, fenestration depth, and materials to create human scale; avoid blind walls and over-large blank surfaces.
• Historic/comparable context: In conservation/historic areas, echo the block’s rhythms, proportions, and two- to three-part vertical compositions without imitating historic styles; staff determines compatibility under § 309.

For life-safety, structure, and fire-resistance, comply with the California Building Standards Code and San Francisco Fire Code. For tenant protection and alterations in occupied buildings, see the San Francisco Rent Ordinance and San Francisco Administrative Code. For accessory units, see San Francisco ADUs and applicable California housing laws.

Checklist

• Confirm HAA eligibility; if yes, apply the objective Citywide Design Standards and relevant objective Planning Code controls.
• Identify the zoning district and any Special Use District; pull applicable height/bulk maps and street frontage controls (e.g., § 145.1, § 145.4).
• Map required stepbacks and massing controls (e.g., § 261.1 alley sculpting; § 270.1 mass reduction; § 270.2 mid-block alleys).
• Lay out ground-floor frontages: transparency, active use, ceiling height, lobby location, and parking/loading entrances per § 145.1.
• Address Citywide Design Standards topics (large sites; modulation; blind walls; fenestration; materials; residential/commercial ground floors).
• If in a conservation/historic context, document compatibility with surrounding massing, rhythm, and detailing; coordinate under § 309.
• Check corridor- or SUD-specific overlays (e.g., Central SoMa §§ 132.4, 249.78).
• Verify other objective requirements triggered by scale (e.g., § 429 public art threshold, § 138.1 streetscape, §§ 135.3/426 open space).

Risks & Ambiguities

Plain-English Summary

If your project is HAA-eligible, San Francisco will judge its look and street presence against a set of objective Citywide Design Standards and the Planning Code’s frontage/massing rules. That means clear, check-the-box expectations for stepbacks, façade articulation, and active street fronts—no guessing and fewer surprises at review.

Source References

• San Francisco Citywide Design Standards: applicability, structure, and topics (objective standards; HAA projects) — see Design Standards document.
• Planning Code objective frontage/massing controls frequently used with the Design Standards:
  • Street Frontage Requirements — § 145.1 (see NC‑1/NCT tables for application)
  • Active Ground-Floor Uses — § 145.4 (district/street-specific)
  • Height Sculpting on Alleys — § 261.1; Horizontal Mass Reduction — § 270.1; Mid-block Alleys — § 270.2 (WMUG/MUO)
  • Central SoMa SUD setbacks/streetwall/tower separation — §§ 132.4, 249.78 (MUO table)
  • Streetscape improvements — § 138.1; Open space — §§ 135.3, 426; Public Art — § 429 (as triggered)
• Article 11 Conservation District Standards and compatibility determination — § 309; Article 11 Appendix § 7 (composition/massing, scale, materials, detailing)
• California Housing Accountability Act (statute referenced by SF Design Standards): Gov. Code § 65589.5 (external) — https://leginfo.legislature.ca.gov/faces/codes_displaySection.xhtml?sectionNum=65589.5.&lawCode=GOV

Retrieved passages

• San Francisco Zoning Code (Section 6) High relevance show source text
• San Francisco Zoning Code (Section 6) High relevance show source text
• San Francisco Zoning Code (chapter focuses) High relevance show source text
• San Francisco Zoning Code (chapter focuses) High relevance show source text
• San Francisco Zoning Code (§ References) Medium relevance show source text
• San Francisco Zoning Code (Section 6) Medium relevance show source text

Cited sections

• San Francisco Citywide Design Standards: applicability, structure, and topics (objective standards; HAA projects) — see Design Standards document.
• Planning Code objective frontage/massing controls frequently used with the Design Standards:
• Street Frontage Requirements — § 145.1 (see NC‑1/NCT tables for application) (§ 145.1)
• Active Ground-Floor Uses — § 145.4 (district/street-specific) (§ 145.4)
• Height Sculpting on Alleys — § 261.1; Horizontal Mass Reduction — § 270.1; Mid-block Alleys — § 270.2 (WMUG/MUO) (§ 261.1)
• Central SoMa SUD setbacks/streetwall/tower separation — §§ 132.4, 249.78 (MUO table) (§ 132.4)
• Streetscape improvements — § 138.1; Open space — §§ 135.3, 426; Public Art — § 429 (as triggered) (§ 138.1)
• Article 11 Conservation District Standards and compatibility determination — § 309; Article 11 Appendix § 7 (composition/massing, scale, materials, detailing) (Article 11)
• California Housing Accountability Act (statute referenced by SF Design Standards): Gov. Code § 65589.5 (external) — (§ 65589.5)
• San-Francisco-Design-Standards.md
• SF Planning Code.md