401 23rd St
San Francisco · Potrero Hill · San Francisco · Coordinates: 37.75498, -122.38518
Parcel & Assessor
- Lot size:
- —
- Assessor use:
- —
- Addresses on lot:
- 401 23RD ST; 435 23RD ST; 501 23RD ST
Zoning & Land Use
PDR-1-G — PRODUCTION, DISTRIBUTION & REPAIR - 1 - GENERAL (Industrial)
State Housing Pathways Screen (ADU & SB 9)
- ADU or junior ADUUnlikely
Zoned PDR-1-G (industrial): the zone doesn't allow homes, so state ADU rules don't apply.
- SB 9: two homes on the lotUnlikely
Zoned PDR-1-G (industrial), not a single-family residential zone.
- SB 9: split into two lotsUnlikely
Zoned PDR-1-G (industrial), 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 VE: 1% annual chance flood (Special Flood Hazard Area) (about 6% of the lot); Zone X: minimal flood hazard (about 94% of the lot) · FIRM panel 0602980119A, 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)
4 active or recent development projects (106 housing units across completed, permitted, and pipeline stages) and 186 total building permits recorded within ½ mile.
- New construction2 permits (1 units)
Developments Deserving Closer Investigation & Active Area Builders
- New commercial building at 601 23rd St (Applied)On this parcel
Active in "Applied" for 14 mo (first record Aug 28, 2025) with no new permit activity recorded in 14 mo. High-impact scale ($762,635 declared valuation across 1 permit).
- 348 new homes at 151 Humboldt St (Applied)0.18 mi NE
Active in "Applied" for 4.4 yr (first record May 19, 2022) with no new permit activity recorded in 4.4 yr. High-impact scale (348 housing units, $175,000,000 declared valuation across 1 permit).
- 275 new homes at 8 22nd St (Approved)0.22 mi NE
Active in "Approved" for 7.9 yr (first record Dec 20, 2018) with no new permit activity recorded in 7.9 yr. High-impact scale (275 housing units, $67,837,000 declared valuation across 2 permits).
- 241 new homes at 919 Illinois St (Approved)0.38 mi N
Active in "Approved" for 6.9 yr (first record Nov 25, 2019) with no new permit activity recorded in 6.9 yr. High-impact scale (241 housing units, $150,000,000 declared valuation across 2 permits).
Permit & Project History on This Parcel (17 permits, 1 grouped projects)
Showing 15 most recent permits| Record # | Category | Status | Applied / Issued | Valuation | Description |
|---|---|---|---|---|---|
| 202412126667 | New commercial / non-residential building | filed | App. Aug 28, 2025 | $762,635 | erect a one story, type 5b, warehouse building. |
| 202508042278 | Remodel / interior alteration | filed | App. Aug 4, 2025 | $95,000 | partial site demolition of a portion of a vacant lot including the removal of various asphalt concrete and portland ceme… |
| 202311030116 | Plan revision / deferred submittal | complete | Iss. Nov 3, 2023 | $1 | revision to the previously approval permit 202209212882. to change address on plans to 501 23rd st. sf ca. also adding m… |
| 202308315649 | Fire alarm / sprinkler |