331 28th Ave
San Francisco · Outer Richmond · San Francisco · Coordinates: 37.78310, -122.48850
Parcel & Assessor
- Lot size:
- —
- Assessor use:
- —
- Addresses on lot:
- 331 28TH AVE; 331A 28TH AVE; 333 28TH AVE
Zoning & Land Use
RH-2 — RESIDENTIAL- HOUSE, TWO FAMILY (Residential)
State Housing Pathways Screen (ADU & SB 9)
- ADU or junior ADULikely eligible
Zoned RH-2 (two-family residential): state law allows ADUs where homes are allowed.
- SB 9: two homes on the lotUnlikely
Zoned RH-2 (two-family residential), not a single-family residential zone.
- SB 9: split into two lotsUnlikely
Zoned RH-2 (two-family residential), not a single-family residential zone.
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 0602980111A, 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: $1,595,000 – $2,157,000 · 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 (42 housing units across completed, permitted, and pipeline stages) and 984 total building permits recorded within ½ mile.
- New construction2 permits (10 units)
- Adds housing (ADU)
Developments Deserving Closer Investigation & Active Area Builders
- Accessory dwelling unit at 331 28th Ave (Issued)On this parcel
Active in "Issued" for 3.8 yr (first record Jan 23, 2023) with no new permit activity recorded in 6 mo.
- 478 27th Avenue & 6210 Geary Blvd. (Issued)0.21 mi SE
Active in "Issued" for 6.9 yr (first record Dec 9, 2019) with no new permit activity recorded in 3.6 yr. High-impact scale (5 housing units, $1,966,580 declared valuation across 4 permits).
- New commercial building at 6210 Geary Bl (Issued)0.22 mi SE
Active in "Issued" for 6.9 yr (first record Dec 9, 2019) with no new permit activity recorded in 3.6 yr. High-impact scale ($1,250,000 declared valuation across 2 permits).
- 2 new homes at 496 Seacliff Ave (Applied)0.32 mi NW
Active in "Applied" for 2 yr (first record Oct 31, 2024) with no new permit activity recorded in 19 mo. High-impact scale (2 housing units, $5,000,000 declared valuation across 2 permits).
Permit & Project History on This Parcel (6 permits, 1 grouped projects)
| Record # | Category | Status | Applied / Issued | Valuation | Description |
|---|---|---|---|---|---|
| 202608136534 | Plan revision / deferred submittal | issued | Iss. Aug 14, 2026 | $6,000 | revision to 202301230597 and 202608035987. 1st flr: change existing office to bedroom. 2nd & 3rd: replace existing windo… |
| 202608035987 | Plan revision / deferred submittal | issued | Iss. Aug 7, 2026 | $1 | revision to 202301230597: reconfigure kitchen & bathroom, delect 1 bedroom room per plan at first floor. |
| 202301230597 | Accessory dwelling unit (new or conversion) | issued | Iss. May 1, 2026 | $200,000 | comply with nov#202182981 & planning case #2022-00833enf.1st fl:legalize dwelling unit @ ground fl per ordinance #43-14.… |
| 202207118177 | Remodel / interior alteration |