Parcel Context · Public-Records Property BriefBlock/lot 6539/009
4230 25th St
San Francisco · Noe Valley · San Francisco · Coordinates: 37.74989, -122.43471
Parcel & Assessor
- Lot size:
- —
- Assessor use:
- —
- Addresses on lot:
- 4230 25TH ST; 4230A 25TH ST; 4232 25TH ST
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 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)
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 (Noe Valley):$3,308±$126 Source: ACS 2020–2024 5-year estimates. Geography: Noe Valley.
ACS 2020–2024 Median Home Value (Noe Valley):$2,000,000+ Source: ACS 2020–2024 5-year estimates. Geography: Noe Valley.
Nearby Activity (½ mile radius, since October 2024)
61 active or recent development projects (89 housing units across completed, permitted, and pipeline stages) and 1,640 total building permits recorded within ½ mile.
- New construction4 permits (11 units)
- Adds housing (ADU)38 permits (48 units)
- Demolition4 permits
- Additions & renovations594 permits
Permit & Project History on This Parcel (6 permits, 1 grouped projects)
Accessory dwelling unit at 4232 25th StStage: Applied · 3 units · $350,000 declared valuation · Last record Jun 14, 2026
| Record # | Category | Status | Applied / Issued | Valuation | Description |
|---|---|---|---|---|---|
| 202604169600 | Accessory dwelling unit (new or conversion) | filed | App. Jun 14, 2026 | $350,000 | convert part of detached garage into adu (state program), with 1-bedroom unit with kitchen and bathroom. (n) unit to be … |
| 202504023552 | Fire alarm / sprinkler | issued | Iss. Jan 14, 2026 | $150,000 | rear bldg: legalize one (e) unit at first flr of the (e) northwest single family bldg. the unit will be 1-bedroom unit w… |
| 202308285461 | Remodel / interior alteration | withdrawn | App. Aug 28, 2023 | $72,000 | rear building. legalize one (e) unit at the first floor of the (e) northwest single family building. the unit will be a … |
| 202109108188 | Remodel / interior alteration |