Parcel Context · Public-Records Property BriefBlock/lot 3141/050
319 Flood Ave
San Francisco · West of Twin Peaks · San Francisco · Coordinates: 37.72963, -122.44706
Parcel & Assessor
- Lot size:
- —
- Assessor use:
- —
- Addresses on lot:
- 319A FLOOD AVE; 319 FLOOD 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 2,753 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)
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
ACS 2020–2024 Median Gross Rent (West of Twin Peaks):$3,357±$344 Source: ACS 2020–2024 5-year estimates. Geography: West of Twin Peaks.
ACS 2020–2024 Median Home Value (West of Twin Peaks):$1,807,000±$49,100 Source: ACS 2020–2024 5-year estimates. Geography: West of Twin Peaks.
Nearby Activity (½ mile radius, since October 2024)
14 active or recent development projects (186 housing units across completed, permitted, and pipeline stages) and 755 total building permits recorded within ½ mile.
- New construction2 permits (174 units)
- Adds housing (ADU)12 permits (12 units)
- Additions & renovations241 permits
- Building systems410 permits
Permit & Project History on This Parcel (4 permits, 2 grouped projects)
Accessory dwelling unit at 319a Flood AveStage: Issued · 1 units · $190,000 declared valuation · Last record Aug 19, 2026
Accessory dwelling unit at 319 Flood AveStage: Issued · 1 units · $10,000 declared valuation · Last record Aug 19, 2026
| Record # | Category | Status | Applied / Issued | Valuation | Description |
|---|---|---|---|---|---|
| 202309207003 | Accessory dwelling unit (new or conversion) | issued | Iss. Aug 19, 2026 | $10,000 | (n) rear deck at the main residence (front bldg) (n) adu under state policy (detached adu under separate permit) |
| 202309207001 | Accessory dwelling unit (new or conversion) | issued | Iss. Aug 19, 2026 | $190,000 | to erect a 1-story, detached adu on rear, type 5b |
| 202105170438 | Roof replacement | complete | Iss. May 17, 2021 | $11,800 | reroofing - reroof 1159s of sheeting, paper torch base . strip sheeting. reroof with added shething over existing sheath… |