San Francisco County — Development Standards

Last reviewed: July 3, 2026

Overview

This page summarizes the Planning Code development standards that govern land use, bulk, and siting in the unincorporated areas of San Francisco County (unincorporated areas). It focuses on the Planning Code controls for setbacks, height, lot coverage, density / FAR, and related siting rules as they apply in each zoning and Special Use District. Expect district-level overrides (Special Use Districts and height/bulk maps) and project‑specific design guidance; verify parcel‑level rules with the jurisdiction. See first for on‑site parking, design review, and how overlay districts or ADU rules may change standards.

Important: the code organizes controls by base use districts (R, C, DTR, etc.), Height & Bulk maps, and numerous Special Use Districts (SUDs) that can modify or replace baseline standards; measurement rules and exceptions live in Article 2.5 and § 270 (bulk controls). See the Planning Code sections cited throughout for the authoritative text and verify with the Planning Department for parcel-specific application. Relevant building‑code matters are separate under the California Building Standards Code.

How the Planning Code organizes Development Standards (quick primer)

• Base rules (front/rear/side setbacks, lot coverage, usable open space, dwelling exposure) are found in Articles governing yards and open space (e.g., § 132, § 133, § 134, § 135, § 140) and general bulk rules in § 270. See the Planning Code references in the file excerpts for these citations .
• Floor Area Ratio (FAR) and numeric density are set per use district (e.g., C‑2 table gives base FAR values) and may be adjusted by proximity to other districts or SUD rules (see § 210.1, § 123, § 124) .
• Height and bulk are controlled by the Height & Bulk maps (e.g., Height Map HT01, HT11) and Article 2.5 measurement rules (§ 260), plus district bulk limits in § 270; many SUDs adopt tailored height/bulk rules (see SUD excerpts) .
• Special Use Districts (SUDs) frequently replace or waive base numeric standards (density limits, lot coverage, lot size) and apply project‑level Design Standards & Guidelines (DSG) instead; read the SUD text for overrides (examples below) .
• Project exceptions and variances follow the Planning Code procedures; use the variances and exceptions process when standards cannot be met.

Common controls (plain synthesis with code anchors)

• Setbacks / Yards — Base front, side, and rear yard requirements are governed by § 132, § 133, and § 134; districts such as Downtown Residential (DTR) and many SUDs explicitly modify or exempt these (§ 134 exceptions in DTRs) .
• Lot coverage / Site coverage — Many downtown/dense districts allow high coverage; DTR rules limit residential‑level lot coverage to 80% except where all residential units face a street/alley (then up to 100% in certain situations) as described in § 134 / DTR rules .
• Height measurement & limits — Height is measured under Article 2.5 rules (see § 260); Height limits for any parcel are shown on the Height & Bulk maps (HT##) and are implemented in individual district tables (examples in SUD text refer to HT01 and HT11) .
• Bulk / tower separation / podiums — Where towers are permitted, podium limits, tower separation (e.g., 82.5 ft in some subdistricts), and podium height caps (e.g., 85 ft) appear in SUD controls and § 270 bulk standards (see examples) .
• FAR & Density — Commercial and mixed‑use districts list base FAR values (for example, C‑2 basic FAR = 3.6:1, with adjustments under certain adjacency rules) under the use‑district Zoning Control Tables and §§ 123–124 . Certain SUDs remove numeric density caps and use Form‑Based or DSG‑based density rules instead (see Parkmerced, Van Ness, etc.) .
• Open space and usable open space — Section § 135 and district tables (or DSG) set required usable open space amounts (some SUDs set per‑unit minimums or waive Section 135) .
• Parking — Parking minimums/maximums are set per district and SUD; some SUDs eliminate minimums (e.g., certain downtown SUDs have no minimum off‑street parking) and require on‑ or below‑grade parking — consult the district table and § 151.1; surface and above‑grade parking is commonly limited in dense districts. See the parking page and district tables for specifics .
• ADUs — Accessory Dwelling Units are explicitly allowed in several downtown districts subject to § 207.1 and state ADU law; check local ADU provisions together with California ADU law and the local § references .

District-by-district summary (where the Planning Code provides district controls)

Below are representative district summaries drawn from the Planning Code excerpts. Each sub‑section states purpose, typical permitted uses, key dimensional standards, and where it applies. These entries reflect the Planning Code text for the named district; verify parcel applicability using the Zoning Map (Height & Bulk/ZN maps) and the Planning Department.

Downtown Residential (DTR)

• Purpose: Transit‑oriented, high‑density mixed‑use residential neighborhoods near downtown; encourage housing and ground‑floor pedestrian uses. § 102, § 101 descriptions apply; see DTR table for specifics .
• Typical permitted uses: High‑density residential towers, ground‑floor retail and neighborhood services; pedestrian‑oriented uses required on special streets. See § 145.1 for street‑facing use requirements .
• Key dimensional standards: Lot coverage: 80% at residential levels (with conditions allowing 100% where all units face a street/alley); height and bulk vary by mapped height districts (see HT maps and § 270 for bulk) .
• Where it applies: Multiple DTR districts (see Zoning Map and the Zoning Control Tables in the Code) .

South Beach Downtown Residential (SB‑DTR)

• Purpose: High‑density residential mixed use adjacent to the Embarcadero and the Bay Bridge. See Table 829 and district narrative .
• Typical permitted uses: High‑density residential, supporting commercial and institutional uses; townhouse entries encouraged on certain streets. ADUs permitted per § 207.1 .
• Key dimensional standards: Height: 40–200 ft (varies by parcel/HT map); lot coverage: up to 100% in some contexts; building setbacks: 3–10 ft for ground floor residential per Ground Floor Residential Design Guidelines (see district table) .
• Where it applies: South Beach area — consult Zoning Map and Table 829 for parcel‑level limits .

Rincon Hill Downtown Residential Mixed Use (Rincon Hill)

• Purpose: Create a mixed‑use neighborhood with towers and podiums; pedestrian ground floor required on certain streets. See Table 827 (Rincon Hill controls) .
• Typical permitted uses: High‑density residential, ground‑floor retail, townhouse units on residential streets; ADUs permitted pursuant to § 207.1 .
• Key dimensional standards: Heights vary from ~45 to 550 ft depending on HT map and location; lot coverage: up to 100% in many cases, with 3–10 ft building setbacks typical for non‑tower buildings on some streets; detailed bulk controls found in § 270(e) and the district DSG .
• Where it applies: Rincon Hill Special Use District parcels listed in the SUD text; see Table 827 and the Zoning Maps .

C‑2 (Community Business) District (example commercial district)

• Purpose: Retail and neighborhood shopping corridors; supports mixed commercial uses while balancing neighborhood character (see § 210.1). Typical controls are in Table 210.1 .
• Typical permitted uses: Retail, services, limited automobile‑oriented uses where appropriate; many non‑residential uses are permitted in enclosed buildings only § 210.1 table .
• Key dimensional standards: Basic FAR = 3.6:1 (adjustable — near RM‑4 or RC‑4 increases to 4.8:1, near C‑3 up to 10:1, with special district exceptions) and height/bulk per HT maps and §§ 102, 250–270 .
• Where it applies: Community business corridors mapped as C‑2 on the Zoning Map; see Table 210.1 for site‑specific references .

Parkmerced Special Use District (PM)

• Purpose: Implements Parkmerced Development Agreement and Design Standards; modifies density and bulk rules per the DSG and Development Agreement (Parkmerced removes some numeric density limits in favor of DSG controls) .
• Typical permitted uses: PM‑R, PM‑MU, community facilities, open space as mapped in ZN13; uses and controls are governed by the Parkmerced Design Standards & Guidelines and the Planning Code SUD text .
• Key dimensional standards: DSG‑driven; Parkmerced SUD specifically allows removal of some height/bulk/density limits and includes tailored setback/open space rules (see § 249.64) .
• Where it applies: Parkmerced mapped parcels (see Sectional Map SU13 / ZN13) .

Van Ness Special Use District

• Purpose: Implements Van Ness Avenue Area Plan, encourages mixed residential/commercial uses and medical uses in the Van Ness Medical Use Subdistrict; applies modified FAR and height limits for the corridor per the SUD text § 243 .
• Typical permitted uses: RC‑4 base district uses with SUD modifications; medical centers allowed with special bulk rules in the medical subdistrict (see SUD controls) .
• Key dimensional standards: Basic FAR: 7.0:1 in 130‑ft districts (Van Ness Medical site), 4.8:1 in 80‑ft districts; Height & Bulk controlled by HT02 and § 270 bulk limits (with medical exceptions via Conditional Use) .
• Where it applies: Van Ness corridor parcels per SU02 / HT02 maps .

Quick Decision‑Relevance Table (selected standards)

Checklist (what an applicant must satisfy before filing a development application)

• Confirm the lot’s base zoning and any Overlay / SUD boundaries on the official Zoning Map (verify HT map designation) — see relevant SUD text (e.g., § 249.x, § 263.x) .
• Determine applicable height (HT map) and bulk limits and applicable measurement method under § 260 and § 270 .
• Calculate allowable FAR / density per the district table (e.g., Table 210.1 for C‑2) and check SUD exceptions (some SUDs use Form‑Based density) .
• Check lot coverage and rear yard rules (e.g., DTR = 80% residential‑level lot coverage) and any appeal/exception processes in § 309 / 309.1 .
• Confirm parking requirements and whether the SUD waives minima or imposes caps; plan for below‑grade parking if required in downtown districts .
• Identify whether design review or large‑project review is required and assemble applicable DSG materials — see the design review and district DSG references .
• If proposing ADUs, follow local § 207.1 while ensuring compliance with California ADU law and state ADU limitations .
• For any non‑standard relief, prepare a Variance/Exception application per the variances and exceptions procedure and cite the specific Code findings needed .

Risks & Ambiguities

Plain‑English Summary

If your lot is in San Francisco County’s unincorporated areas, the Planning Code sets baseline rules for how close you can build to property lines, how tall buildings can be, how much of your lot you can cover, and how dense a project may be — but many mapped districts and Special Use Districts change those numbers, so look up the parcel’s exact zoning, HT map, and any SUD/overlay before designing a project. Verify parking and ADU rules and whether your project will need design review; for parcel‑specific edges and exceptions, contact the Planning Department. Relevant code anchors include the yard/open space articles and Article 2.5 bulk rules (e.g., § 132–§ 136, § 135, § 260, § 270).

Information Gaps

• A distinct, separate “San Francisco County — unincorporated areas” Planning Code document or ordinance title was not provided among the retrieved materials; the uploaded materials appear to be the City & County Planning Code with SUDs. Verify whether a separate county (unincorporated) code applies. Not found in retrieved materials.
• Parcel‑level Zoning Map (Height & Bulk map HT##) images and exact lot‑by‑lot assignments were not included; those are required to determine exact numeric limits for a given lot. Not found in retrieved materials.
• Local administrative forms and the exact thresholds that trigger design review for small projects in unincorporated areas were not present. Verify with the Planning Department. Not found in retrieved materials.

Source References

• Planning Code: yard/open space and obstructions (see § 132, § 133, § 134, § 135, § 136) — Code excerpts in upload .
• Downtown Residential (DTR) district controls and lot coverage rules (Table descriptions) — DTR Zoning Control Table and narrative .
• Rincon Hill controls (Table 827; setbacks, lot coverage notes) — Rincon Hill district table and controls .
• SB‑DTR (Table 829) — South Beach district controls (setbacks, heights, coverage) .
• C‑2 district Zoning Control Table and FAR guidance (Table 210.1) — commercial FAR examples and references .
• Special Use District examples and SUD general controls (Parkmerced, SUD definitions) — SUD text including § 249.64, § 249.9 .
• Height & Bulk, measurement and tower/podium controls, Article 2.5 references (HT maps, § 260, § 270) — SUD and bulk excerpts .
• Specific tower/podium examples and separation rules (e.g., 85 ft podium cap, 82.5 ft separation) — SUD examples and bulk standards .

Retrieved passages

• San Francisco County Zoning Code (Section 211.1) High relevance show source text
• San Francisco County Zoning Code (Section 207.1) High relevance show source text
• San Francisco County Zoning Code (Section 304.) High relevance show source text
• San Francisco County Zoning Code (Section 249.22) High relevance show source text
• San Francisco County Zoning Code (Section 249.40A) High relevance show source text
• San Francisco County Zoning Code (Section 135) High relevance show source text
• San Francisco County Zoning Code (Section 136) High relevance show source text
• San Francisco County Zoning Code (Section 828) High relevance show source text

Cited sections

• Planning Code: yard/open space and obstructions (see **§ 132, § 133, § 134, § 135, § 136**) — Code excerpts in upload . (§ 132)
• Downtown Residential (DTR) district controls and lot coverage rules (Table descriptions) — DTR Zoning Control Table and narrative .
• Rincon Hill controls (Table 827; setbacks, lot coverage notes) — Rincon Hill district table and controls .
• SB‑DTR (Table 829) — South Beach district controls (setbacks, heights, coverage) .
• C‑2 district Zoning Control Table and FAR guidance (Table 210.1) — commercial FAR examples and references .
• Special Use District examples and SUD general controls (Parkmerced, SUD definitions) — SUD text including § 249.64, § 249.9 . (§ 249.64)
• Height & Bulk, measurement and tower/podium controls, Article 2.5 references (HT maps, § 260, § 270) — SUD and bulk excerpts . (Article 2.5)
• Specific tower/podium examples and separation rules (e.g., 85 ft podium cap, 82.5 ft separation) — SUD examples and bulk standards .
• SanFranciscoCounty_ZoningCode.md

• Official San Francisco County code library