40 Gaven St
San Francisco · Portola · San Francisco · Coordinates: 37.73402, -122.40732
Parcel & Assessor
- Lot size:
- —
- Assessor use:
- —
- Addresses on lot:
- 40 GAVEN 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 lotsLikely eligible
Zoned RH-1, a single-family residential zone. The lot is 5,443 sq ft on the parcel map, room for two lots of at least 1,200 sq ft, each at least 40% of the original.
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 0602980231A, 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: $1,327,000 – $1,795,000 · 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)
22 active or recent development projects (33 housing units across completed, permitted, and pipeline stages) and 579 total building permits recorded within ½ mile.
- Adds housing (ADU)9 permits (19 units)
- Demolition3 permits
Developments Deserving Closer Investigation & Active Area Builders
- 6 new homes at 40 Gaven St (Finaled / completed)On this parcel
High-impact scale (6 housing units, $46,601 declared valuation across 5 permits).
- New duplex at 816 Silliman St (Applied)0.48 mi SW
Active in "Applied" for 4.7 yr (first record Mar 1, 2022) with no new permit activity recorded in 4.7 yr. High-impact scale (2 housing units, $1,250,000 declared valuation across 1 permit).
- 2 new homes at 139a Sweeny St (Issued)0.1 mi SW
Active in "Issued" for 9 yr (first record Nov 13, 2017) with no new permit activity recorded in 3.1 yr.
- Accessory dwelling unit at 39 Girard St (Applied)0.18 mi SE
Active in "Applied" for 19 mo (first record Apr 7, 2025) with no new permit activity recorded in 19 mo.
Permit & Project History on This Parcel (8 permits, 1 grouped projects)
| Record # | Category | Status | Applied / Issued | Valuation | Description |
|---|---|---|---|---|---|
| 202511199985 | Remodel / interior alteration | issued | Iss. Nov 19, 2025 | $1 | to obtain final inspection for work approved under pa#201705055874. all work is complete |
| 202508082673 | Plan revision / deferred submittal | filed | App. Aug 8, 2025 | $5,000 | revision to 201705055874. revise concrete footings and wood beams |
| 202506209126 | Accessory dwelling unit (new or conversion) | complete | Iss. Jun 20, 2025 | $46,601 | upgrade (e) fire alarm system to comply with sffc section 1103.7.6.1 and include sprinkler monitoring ref adu 2017-0505-… |
| 202505297477 | Fire alarm / sprinkler | complete | Iss. May 29, 2025 |