523 42nd Ave
San Francisco · Outer Richmond · San Francisco · Coordinates: 37.77869, -122.50323
Parcel & Assessor
- Lot size:
- —
- Assessor use:
- —
- Addresses on lot:
- 523 42ND AVE; 525 42ND 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 0602980094A, 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: $1,345,000 – $1,819,000 · 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)
12 active or recent development projects (13 housing units across completed, permitted, and pipeline stages) and 712 total building permits recorded within ½ mile.
- Adds housing (ADU)7 permits (8 units)
Developments Deserving Closer Investigation & Active Area Builders
- New home at 525 42nd Ave (Issued)On this parcel
Active in "Issued" for 10.2 yr (first record Aug 11, 2016) with no new permit activity recorded in 8.8 yr.
- Accessory dwelling unit at 7915 Geary Bl (Issued)330 ft W
Active in "Issued" for 4 yr (first record Oct 21, 2022) with no new permit activity recorded in 2.5 yr.
- 7700 Geary Boulevard (Entitled)440 ft NE
Active in "Entitled" for 2.4 yr (first record May 21, 2024) with no new permit activity recorded in 2.4 yr.
- Accessory dwelling unit at 574 44th Ave (Issued)0.1 mi SW
Active in "Issued" for 2.3 yr (first record Jul 10, 2024) with no new permit activity recorded in 14 mo.
Permit & Project History on This Parcel (6 permits, 1 grouped projects)
| Record # | Category | Status | Applied / Issued | Valuation | Description |
|---|---|---|---|---|---|
| 202512182206 | Remodel / interior alteration | complete | Iss. Dec 18, 2025 | $1 | to obtain final inspection for work approved under pa # 201608114752, 201803052866, & 201806071301. all work is complete… |
| 202207138403 | Remodel / interior alteration | expired | Iss. Jul 13, 2022 | $1 | to obtain final inspection for work approved under pa#201608114752, 201803052866, and 201806071301. all work is complete… |
| 201809119750 | Roof replacement | complete | Iss. Sep 11, 2018 | $8,200 | re-roofing |
| 201806071301 | Remodel / interior alteration | expired | Iss. Jun 26, 2018 |