450 Plymouth Ave
San Francisco · Oceanview/Merced/Ingleside · San Francisco · Coordinates: 37.71481, -122.45583
Parcel & Assessor
- Lot size:
- —
- Assessor use:
- —
- Addresses on lot:
- 450 PLYMOUTH AVE; 452 PLYMOUTH 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 0602980230A, 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: $1,161,000 – $1,571,000 · 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)
36 active or recent development projects (45 housing units across completed, permitted, and pipeline stages) and 597 total building permits recorded within ½ mile.
- New construction4 permits (10 units)
Developments Deserving Closer Investigation & Active Area Builders
- Accessory dwelling unit at 450 Plymouth Ave (Issued)On this parcel
Active in "Issued" for 8.7 yr (first record Jan 30, 2018) with no new permit activity recorded in 5.9 yr.
- 6 new homes at 2834 San Jose Ave (Applied)0.17 mi SE
Active in "Applied" for 13 mo (first record Sep 23, 2025) with no new permit activity recorded in 13 mo. High-impact scale (6 housing units, $1,000,000 declared valuation across 2 permits).
- 3 new homes at 745 Capitol Ave (Approved)0.25 mi NW
Active in "Approved" for 3.4 yr (first record Jun 2, 2023) with no new permit activity recorded in 3.4 yr. High-impact scale (3 housing units, $895,424 declared valuation across 3 permits).
- Accessory dwelling unit at 218a Montana St (Applied)0.26 mi NW
Active in "Applied" for 3 yr (first record Oct 19, 2023) with no new permit activity recorded in 3 yr. High-impact scale (2 housing units, $1,543,059 declared valuation across 1 permit).
Permit & Project History on This Parcel (3 permits, 1 grouped projects)
| Record # | Category | Status | Applied / Issued | Valuation | Description |
|---|---|---|---|---|---|
| 201801309942 | Accessory dwelling unit (new or conversion) | issued | Iss. Nov 20, 2020 | $138,000 | add a new unit with 3 bedrooms & 2 bath at 1st flr area to comply with ordinance 162-16. |
| 201703070820 | Remodel / interior alteration | cancelled | App. Mar 7, 2017 | $25,000 | convert one bathroom to 2 bathrooms on 2nd floor. |
| 201609097323 | Repair tied to a housing/code case | complete | Iss. Sep 9, 2016 | $2,000 | to comply with nov# 201611892. repair damaged stucco at front of bldg and water damage framing material. |