129 Saturn St
San Francisco · Castro/Upper Market · San Francisco · Coordinates: 37.76248, -122.44368
Parcel & Assessor
- Lot size:
- —
- Assessor use:
- —
- Addresses on lot:
- 129 SATURN ST; 131 SATURN ST
Zoning & Land Use
RH-2 — RESIDENTIAL- HOUSE, TWO FAMILY (Residential)
State Housing Pathways Screen (ADU & SB 9)
- ADU or junior ADULikely eligible
Zoned RH-2 (two-family residential): state law allows ADUs where homes are allowed.
- SB 9: two homes on the lotUnlikely
Zoned RH-2 (two-family residential), not a single-family residential zone.
- SB 9: split into two lotsUnlikely
Zoned RH-2 (two-family residential), 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 X: minimal flood hazard (all of the lot) · FIRM panel 0602980114A, 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)
36 active or recent development projects (44 housing units across completed, permitted, and pipeline stages) and 1,315 total building permits recorded within ½ mile.
- New construction1 permit (2 units)
- Adds housing (ADU)23 permits (28 units)
- Demolition1 permit
- Additions & renovations483 permits
Developments Deserving Closer Investigation & Active Area Builders
- New duplex at 247 Upper Tr (Issued)420 ft W
Active in "Issued" for 6.1 yr (first record Sep 22, 2020) with no new permit activity recorded in 20 mo. High-impact scale (2 housing units, $1,400,000 declared valuation across 4 permits).
- New home at 35 Belgrave Ave (Issued)0.36 mi SW
Active in "Issued" for 5.9 yr (first record Nov 14, 2020) with no new permit activity recorded in 2.7 yr. High-impact scale (1 housing unit, $1,700,000 declared valuation across 2 permits).
- Accessory dwelling unit at 144 Parnassus Ave (Issued)0.43 mi NW
Active in "Issued" for 8.8 yr (first record Jan 24, 2018) with no new permit activity recorded in 3.2 yr. High-impact scale (4 housing units, $175,000 declared valuation across 2 permits).
- New home at 109 Grand View Ave (Issued)0.48 mi SE
Active in "Issued" for 3.7 yr (first record Feb 16, 2023) with no new permit activity recorded in 19 mo. High-impact scale (1 housing unit, $1,195,000 declared valuation across 1 permit).
Permit & Project History on This Parcel (5 permits, 1 grouped projects)
| Record # | Category | Status | Applied / Issued | Valuation | Description |
|---|---|---|---|---|---|
| 202607145041 | Accessory dwelling unit (new or conversion) | filed | App. Sep 3, 2026 | $195,000 | new two story adu within existing building envelope of a duplex residence |
| 202601133783 | Remodel / interior alteration | complete | Iss. Feb 2, 2026 | $30,000 | kitchen remodel including wall removal and new beams within unit 129 of the existing duplex residence. |
| 202506098242 | Remodel / interior alteration | complete | Iss. Jun 9, 2025 | $2,000 | handrail to stairs for condo conversion. comply with inspection report cc-8659. work is not visible from st. |
| 202501108146 | Remodel / interior alteration | complete |