31 Brunswick St
San Francisco · Excelsior · San Francisco · Coordinates: 37.71175, -122.43854
Parcel & Assessor
- Lot size:
- —
- Assessor use:
- —
- Addresses on lot:
- 31A BRUNSWICK ST; 31 BRUNSWICK ST
Zoning & Land Use
RH-1 — RESIDENTIAL- HOUSE, ONE FAMILY (Residential)
State Housing Pathways Screen (ADU & SB 9)
- ADU or junior ADULikely eligible
Zoned RH-1 (single-family residential): state law allows ADUs where homes are allowed.
- SB 9: two homes on the lotLikely eligible
Zoned RH-1, a single-family residential zone.
- SB 9: split into two lotsUnlikely
Zoned RH-1, a single-family residential zone. The lot is 1,872 sq ft on the parcel map; a split needs at least 2,400 sq ft (two lots of 1,200 sq ft or more).
Mapped Hazard Zones on This Lot
- CAL FIRE Fire Hazard Severity Zone
- Not in a State-mapped fire hazard severity zone
- FEMA National Flood Hazard Layer
- Zone X: minimal flood hazard (all of the lot) · FIRM panel 0602980230A, effective March 23, 2021
- CGS Alquist-Priolo Earthquake Fault Zone
- Not in an Alquist-Priolo Earthquake Fault Zone
Surrounding Rent & Value Benchmarks (Public Records)
Range: $1,216,000 – $1,646,000 · Status: Off market
HUD Metro FMR (San Francisco, CA HUD Metro FMR Area) · FY 2026
Studio $2,485 · 1BR $2,977 · 2BR $3,604 · 3BR $4,604 · 4BR $4,772
Nearby Activity (½ mile radius, since October 2024)
21 active or recent development projects (31 housing units across completed, permitted, and pipeline stages) and 501 total building permits recorded within ½ mile.
- Adds housing (ADU)16 permits (17 units)
- Demolition2 permits
Developments Deserving Closer Investigation & Active Area Builders
- Accessory dwelling unit at 31a Brunswick St (Issued)On this parcel
Active in "Issued" for 3 yr (first record Oct 20, 2023) with no new permit activity recorded in 16 mo.
- 50 new homes (Entitled)0.31 mi NW
Active in "Entitled" for 2.7 yr (first record Feb 8, 2024) with no new permit activity recorded in 2.7 yr. High-impact scale (50 housing units, 12 deed-restricted affordable across 0 permits).
- 0 Guttenberg (Issued)0.33 mi W
Active in "Issued" for 5.6 yr (first record Mar 11, 2021) with no new permit activity recorded in 4 yr. High-impact scale (4 housing units, $1,975,700 declared valuation across 4 permits).
- Accessory dwelling unit at 1155 Naples St (Applied)510 ft NE
Active in "Applied" for 5.6 yr (first record Mar 16, 2021) with no new permit activity recorded in 5.6 yr.
Permit & Project History on This Parcel (2 permits, 1 grouped projects)
| Record # | Category | Status | Applied / Issued | Valuation | Description |
|---|---|---|---|---|---|
| 202601214258 | Plan revision / deferred submittal | issued | Iss. Jul 2, 2026 | $58,000 | rev 202310209116 to the structural plans only. excavation due to (e) house conditions. |
| 202310209116 | Accessory dwelling unit (new or conversion) | issued | Iss. Jul 1, 2025 | $227,000 | adding adu per state adu program. the adu will be added "per planning code section 207.2" at lower level |
State HCD Housing Element APR records on this parcel: 1 entry (report years 2025).