1446 42nd Ave
San Francisco · Sunset/Parkside · San Francisco · Coordinates: 37.75973, -122.50125
Parcel & Assessor
- Lot size:
- —
- Assessor use:
- —
- Addresses on lot:
- 1446 42ND AVE; 1446A 42ND 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 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: $1,478,000 – $2,000,000 · 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)
23 active or recent development projects (29 housing units across completed, permitted, and pipeline stages) and 694 total building permits recorded within ½ mile.
- New construction2 permits (2 units)
Developments Deserving Closer Investigation & Active Area Builders
- Accessory dwelling unit at 1446a 42nd Ave (Issued)On this parcel
Active in "Issued" for 8.1 yr (first record Oct 10, 2018) with no new permit activity recorded in 6.8 yr.
- Accessory dwelling unit at 3713 Lawton St (Issued)0.22 mi S
Active in "Issued" for 15 mo (first record Aug 11, 2025) with no new permit activity recorded in 10 mo. High-impact scale (1 housing unit, $1,062,978 declared valuation across 1 permit).
- Accessory dwelling unit at 1719 39th Ave (Applied)0.38 mi SE
Active in "Applied" for 22 mo (first record Jan 9, 2025) with no new permit activity recorded in 11 mo. High-impact scale (1 housing unit, $900,000 declared valuation across 1 permit).
- Accessory dwelling unit at 1486 44th Ave (Applied)0.13 mi SW
Active in "Applied" for 12 mo (first record Oct 28, 2025) with no new permit activity recorded in 12 mo.
Permit & Project History on This Parcel (8 permits, 1 grouped projects)
| Record # | Category | Status | Applied / Issued | Valuation | Description |
|---|---|---|---|---|---|
| 202211156493 | Windows / doors / siding | issued | Iss. Nov 15, 2022 | $2,200 | garage door replacement: install new garage door and door opener. (e) material: sectional wood door. (n) material to ins… |
| 202009164321 | Plan revision / deferred submittal | issued | Iss. Jun 18, 2021 | $10,000 | revision to pa #2018-1010-2775: make existing rear yard cottage into an adu. work is limited to basement of main buildin… |
| 201810102775 | Accessory dwelling unit (new or conversion) | issued | Iss. Dec 31, 2019 | $25,000 | rear building. renovation of existing rear yard cottage to be an accessory dweling unit per ordinance 95-17 |
| 201811296992 | Remodel / interior alteration |