2027 20th Ave
San Francisco · Sunset/Parkside · San Francisco · Coordinates: 37.74989, -122.47757
Parcel & Assessor
- Lot size:
- —
- Assessor use:
- —
- Addresses on lot:
- 2027 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 3,000 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: $1,454,000 – $1,968,000 · 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)
19 active or recent development projects (22 housing units across completed, permitted, and pipeline stages) and 813 total building permits recorded within ½ mile.
- Adds housing (ADU)14 permits (14 units)
Developments Deserving Closer Investigation & Active Area Builders
- New home at 2027 20th Ave (Issued)On this parcel
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)0.21 mi NE
Active in "Issued" for 7.2 yr (first record Aug 6, 2019) with no new permit activity recorded in 2.4 yr. High-impact scale (1 housing unit, $1,000,000 declared valuation across 1 permit).
- New home at 1925 23rd Ave (Applied)0.22 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)0.37 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 |
|---|---|---|---|---|---|
| 202111233075 | Plan revision / deferred submittal | issued | Iss. May 29, 2025 | $12,000 | addition of an adu. government code section 65852.2 rev to #201811014764 & 200804048918 (under separate permiit 20210407… |
| 202104078096 | Accessory dwelling unit (new or conversion) | issued | Iss. Feb 22, 2022 | $864,000 | to erect a 3 story type v single family dwelling building. adu under separate permit |
| 202104078095 | Demolition | issued | Iss. Feb 22, 2022 | $15,000 | to demolish existing 1 story single family dwelling building |
| 201902223574 | Fire alarm / sprinkler | issued | Iss. Feb 22, 2019 |