San Francisco ADU permit requirements
Last reviewed: June 20, 2026
Quick answer
Permitting an accessory dwelling unit (ADU) in San Francisco, California means pulling a building permit from the local authority that issues it. ArchPermit tracks 17 source-cited requirements (14 required, the rest conditional) for this jurisdiction. Submittals go through PermitSF Portal (OpenGov), with plan review via Bluebeam Revu. These requirements were last reviewed June 20, 2026; confirm the exact forms and fees with the local permitting authority.
A source-cited checklist of what an ADU (accessory dwelling unit) permit package needs in City and County of San Francisco. Every item links to its authoritative source; items that vary are flagged to confirm locally.
SF runs two ADU tracks: the State/Hybrid program (ministerial, streamlined) and the Local program (adds a 15-day neighborhood notice + SF Rent Board / Costa-Hawkins steps). Review is multi-agency: Planning, DBI, Fire, Public Works, and PUC. An ADU Screening Form (DBI Information Sheet G-23, Attachment B) is submitted WITH the building permit application via the PermitSF (OpenGov) portal.
- ADU Screening Form (IS G-23, Attachment B)required
DBI screening form selecting the State/Hybrid or Local ADU program; Section 1 (administrative) by owner or agent, Section 2 (owner affidavit) by owner only. Completed prior to / submitted with the permit application.
source · reviewed 2026-06-20 - Building Permit Applicationrequired
A building permit is required for ADU construction in SF, submitted through the PermitSF (OpenGov) portal; the specific application form depends on scope of work.
source · reviewed 2026-06-20 - Building Section(s)required
Provide a section confirming floor-to-ceiling heights and/or excavation at the ADU level(s). If heights change or excavation is proposed, include separate existing and proposed sections.
source · reviewed 2026-06-20 - Floor Plans (Existing and Proposed)required
Existing and proposed floor plans for all floors, labeling street names, rooms, areas, exits and egress; show location and square footage of each new ADU and label all existing dwelling units and their room uses.
source · reviewed 2026-06-20 - Gas and Electrical Metersrequired
Show location of existing and proposed gas and electrical meters on the plans.
source · reviewed 2026-06-20 - Owner Affidavit: Housing Services (Rent Ordinance 37.2(r))required
Section 2 of the Screening Form, signed by the owner, acknowledging Rent Ordinance 'just cause' rules for severing garage/parking/storage/laundry and other housing services when converting space to an ADU.
source · reviewed 2026-06-20 - Parking (Vehicle and Bicycle)required
Include dimensions and outline of all existing and proposed vehicle and bicycle parking. If off-street parking is removed, show curb cut(s) to be removed and note 'remove curb cut'.
source · reviewed 2026-06-20 - Plumbing Fixtures / SFPUC Fixture Count Formrequired
Show location of plumbing fixtures of all existing units. In lieu of drawing them, SFPUC accepts a completed, signed and stamped Existing and Proposed Fixture Count form.
source · reviewed 2026-06-20 - Room and Glazing Dimensionsrequired
Label the dimensions of the rooms and windows within the ADU.
source · reviewed 2026-06-20 - Site Planrequired
Site plan showing adjacent lots (both sides) with full building outlines, true north, and dimensions from building walls to property lines/structures and sidewalk width. Separate existing and proposed site plans if exterior changes are proposed.
source · reviewed 2026-06-20 - Street Tree Location / In-Lieu Fee Noterequired
Indicate location of existing and proposed street trees (Public Works requirement) or add a notation if opting to pay the in-lieu fee.
source · reviewed 2026-06-20 - Trash / Recycling / Compost (Toter) Spacerequired
Show dedicated space for trash, recycling, and compost carts on private property, screened from public view.
source · reviewed 2026-06-20 - Usable Open Space Dimensionsrequired
On the site plan, dimension decks, terraces, and yards counting as usable open space.
source · reviewed 2026-06-20 - Window Details / EERO Identificationrequired
For windows: include dimensions, operation, material type, fire ratings, whether adjacent to property-line openings, and which serve as Emergency Escape and Rescue Openings (EERO); provide a plan section detail of new windows.
source · reviewed 2026-06-20 - Building Elevationsconditional
If exterior changes are proposed, provide separate existing and proposed elevations for the affected building face(s), including exterior materials. Partial elevations accepted for minor non-public-facing modifications when no expansion is proposed.
source · reviewed 2026-06-20 - Fire / Egress Package (3+ units, R-2 Occupancy)conditional
For buildings of 3+ units (R-2): exiting plan, EERO locations and travel paths, egress/exit analysis, fire department access point, FDC and hydrant locations, sprinkler riser/clearances, fire underground service and backflow preventer, fire alarm control unit/annunciator, and SFFD water-flow information.
source · reviewed 2026-06-20 - Tenant Notification of ADU Conversionconditional
If the project removes housing services from existing tenants: notice posted 15 days in a common area and mailed to all tenants and the owner; copy of the posted/mailed notice and mailing list submitted with the Screening Form.
source · reviewed 2026-06-20
San Francisco ADU permit questions
- Do I need a permit to build an ADU in San Francisco?
- Yes. An accessory dwelling unit (ADU) in San Francisco requires a building permit. ArchPermit tracks 17 cited requirements for this jurisdiction (14 required, the rest conditional). Always confirm the exact forms, fees, and code edition with the local permitting authority that issues the permit.
- What does an ADU permit package require in San Francisco?
- Core required items include: ADU Screening Form (IS G-23, Attachment B); Building Permit Application; Building Section(s); Floor Plans (Existing and Proposed); Gas and Electrical Meters; Owner Affidavit: Housing Services (Rent Ordinance 37.2(r)), plus 8 more. Each requirement links to its authoritative source, and nothing is permit-ready until an independent licensed professional reviews and seals it.
- How are ADU permits submitted in San Francisco?
- San Francisco accepts permit submittals via PermitSF Portal (OpenGov), with plan review via Bluebeam Revu. ArchPermit prepares a draft package you can submit there after a licensed architect reviews and seals it.