Parcel Context · Public-Records Property BriefBlock/lot 8933/003
401 California Ave
San Francisco · Treasure Island · San Francisco · Coordinates: 37.81953, -122.36870
Parcel & Assessor
- Lot size:
- —
- Assessor use:
- —
- Addresses on lot:
- 401 CALIFORNIA AVE UNIT BLDG 140
Zoning & Land Use
TI-MU — TREASURE ISLAND MIXED USE (Mixed Use)
State Housing Pathways Screen (ADU & SB 9)
- ADU or junior ADULikely eligible
Zoned TI-MU (mixed use): state law allows ADUs where homes are allowed. On a multifamily lot the state allowance is different: ADUs in non-living space of the building, plus up to eight detached ADUs.
- SB 9: two homes on the lotUnlikely
Zoned TI-MU (mixed use), not a single-family residential zone.
- SB 9: split into two lotsUnlikely
Zoned TI-MU (mixed use), 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: 0.2% annual chance flood hazard (shaded X) (all of the lot) · FIRM panel 0602980128A, effective March 23, 2021
- CGS Alquist-Priolo Earthquake Fault Zone
- Not in an Alquist-Priolo Earthquake Fault Zone
Surrounding Rent & Value Benchmarks (Public Records)
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
ACS 2020–2024 Median Gross Rent (Treasure Island):$2,415±$241 Source: ACS 2020–2024 5-year estimates. Geography: Treasure Island.
Nearby Activity (½ mile radius, since October 2024)
7 active or recent development projects (545 housing units across completed, permitted, and pipeline stages) and 49 total building permits recorded within ½ mile.
- New construction4 permits (370 units)
- Demolition7 permits
- Additions & renovations19 permits
- Building systems5 permits
- Repairs4 permits
- Other10 permits
Permit & Project History on This Parcel (1 permits, 1 grouped projects)
150 new homes at 401 California AveStage: Issued · 150 units · $79,391,871 declared valuation · Last record Jul 1, 2026
| Record # | Category | Status | Applied / Issued | Valuation | Description |
|---|---|---|---|---|---|
| 202506209120 | New multifamily / condos / mixed-use | issued | Iss. Jul 1, 2026 | $79,391,871 | to erect 6 stories, no basement, type i-a & ii-a, 150 units residential units with child development center (warmshell),… |