581 Hamilton St
San Francisco · Portola · San Francisco · Coordinates: 37.72406, -122.40842
Parcel & Assessor
- Lot size:
- —
- Assessor use:
- —
- Addresses on lot:
- 581 HAMILTON ST; 583 HAMILTON ST
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 lotsUnlikely
Zoned RH-1, a single-family residential zone. The lot is 2,063 sq ft on the parcel map; a split needs at least 2,400 sq ft (two lots of 1,200 sq ft or more).
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 0602980231A, 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
Nearby Activity (½ mile radius, since October 2024)
23 active or recent development projects (29 housing units across completed, permitted, and pipeline stages) and 449 total building permits recorded within ½ mile.
- New construction1 permit (1 units)
- Adds housing (ADU)12 permits (12 units)
- Additions & renovations129 permits
- Building systems252 permits
Developments Deserving Closer Investigation & Active Area Builders
- Mixed-use development at 770 Woolsey St (Applied)240 ft SW
Active in "Applied" for 4.9 yr (first record Nov 18, 2021) with no new permit activity recorded in 3.4 yr. High-impact scale (62 housing units, 11 deed-restricted affordable, $300,000 declared valuation across 52 permits).
- 2861-2865 San Bruno Ave (Entitled)0.33 mi E
Active in "Entitled" for 3.5 yr (first record May 4, 2023) with no new permit activity recorded in 3.5 yr. High-impact scale (18 housing units, 4 deed-restricted affordable across 0 permits).
- New home at 539 Goettingen St (Issued)0.17 mi NE
Active in "Issued" for 3.6 yr (first record Mar 29, 2023) with no new permit activity recorded in 2 yr. High-impact scale (1 housing unit, $822,256 declared valuation across 1 permit).
- New duplex at 816 Silliman St (Applied)0.46 mi NW
Active in "Applied" for 4.7 yr (first record Mar 1, 2022) with no new permit activity recorded in 4.7 yr. High-impact scale (2 housing units, $1,250,000 declared valuation across 1 permit).
Permit & Project History on This Parcel (2 permits, 1 grouped projects)
| Record # | Category | Status | Applied / Issued | Valuation | Description |
|---|---|---|---|---|---|
| 202605261833 | Accessory dwelling unit (new or conversion) | filed | App. Jun 11, 2026 | $115,000 | new adu first floor using state program sec. 65852.2. adu will incl. new bedrm, kitchen, bathrm, & living rm. new deck o… |
| 202512182114 | Remodel / interior alteration | issued | Iss. Dec 18, 2025 | $25,000 | remodel primary bathroom like for like, remodel hall bathroom like for like. |