2172 20th Ave
San Francisco · Sunset/Parkside · San Francisco · Coordinates: 37.74725, -122.47673
Parcel & Assessor
- Lot size:
- —
- Assessor use:
- —
- Addresses on lot:
- 2172 20TH AVE; 2174 20TH AVE
Zoning & Land Use
RH-1 — RESIDENTIAL- HOUSE, ONE FAMILY (Residential)
State Housing Pathways Screen (ADU & SB 9)
- ADU or junior ADULikely eligible
Zoned RH-1 (single-family residential): state law allows ADUs where homes are allowed.
- SB 9: two homes on the lotLikely eligible
Zoned RH-1, a single-family residential zone.
- SB 9: split into two lotsLikely eligible
Zoned RH-1, a single-family residential zone. The lot is 3,005 sq ft on the parcel map, room for two lots of at least 1,200 sq ft, each at least 40% of the original.
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: $1,268,000 – $1,716,000 · 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)
18 active or recent development projects (21 housing units across completed, permitted, and pipeline stages) and 791 total building permits recorded within ½ mile.
- Adds housing (ADU)10 permits (10 units)
Developments Deserving Closer Investigation & Active Area Builders
- New home at 2027 20th Ave (Issued)0.19 mi N
Active in "Issued" for 5.8 yr (first record Jan 21, 2021) with no new permit activity recorded in 17 mo. High-impact scale (1 housing unit, $864,000 declared valuation across 3 permits).
- Accessory dwelling unit at 1937 17th Ave (Issued)0.33 mi N
Active in "Issued" for 7.2 yr (first record Aug 6, 2019) with no new permit activity recorded in 2.5 yr. High-impact scale (1 housing unit, $1,000,000 declared valuation across 1 permit).
- New home at 1925 23rd Ave (Applied)0.38 mi NW
Active in "Applied" for 4.4 yr (first record Jun 7, 2022) with no new permit activity recorded in 4.4 yr. High-impact scale (1 housing unit, $800,000 declared valuation across 1 permit).
- Accessory dwelling unit at 1900 15th Ave (Issued)0.45 mi NE
Active in "Issued" for 13 mo (first record Oct 7, 2025) with no new permit activity recorded in 9 mo. current_status changed to "approved" in snapshot Oct 29, 2026.
Permit & Project History on This Parcel (7 permits, 1 grouped projects)
| Record # | Category | Status | Applied / Issued | Valuation | Description |
|---|---|---|---|---|---|
| 202508082668 | Remodel / interior alteration | complete | Iss. Aug 15, 2025 | $1 | addressing permit only. refer to pa# 2023-0428-6737 to legalize ground floor unit. add a new address 2172 20th ave to th… |
| 202304286737 | Plan revision / deferred submittal | complete | Iss. Jun 5, 2024 | $488,833 | revision to pa 2017-0919-9022 remodel & legalize ground floor unit; remodel main floor unit; to comply with 201791662 & … |
| 202303133598 | Remodel / interior alteration | withdrawn | App. Mar 13, 2023 | — | to comply with 202173697: open all walls for complete rewire, new insulation and repiping replace all plaster with 5/8 d… |
| 201709199022 | Repair tied to a housing/code case |