631 Morse St
San Francisco · Excelsior · San Francisco · Coordinates: 37.71130, -122.44470
Parcel & Assessor
- Lot size:
- —
- Assessor use:
- —
- Addresses on lot:
- 631 MORSE 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 lotsLikely eligible
Zoned RH-1, a single-family residential zone. The lot is 2,893 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)
Range: $1,005,000 – $1,359,000 · 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)
20 active or recent development projects (30 housing units across completed, permitted, and pipeline stages) and 450 total building permits recorded within ½ mile.
- Adds housing (ADU)13 permits (14 units)
- Demolition1 permit
Developments Deserving Closer Investigation & Active Area Builders
- Accessory dwelling unit at 631 Morse St (Approved)On this parcel
Active in "Approved" for 16 mo (first record Jun 24, 2025) with no new permit activity recorded in 16 mo.
- 50 new homes (Entitled)0.16 mi N
Active in "Entitled" for 2.7 yr (first record Feb 8, 2024) with no new permit activity recorded in 2.7 yr. High-impact scale (50 housing units, 12 deed-restricted affordable across 0 permits).
- 0 Guttenberg (Issued)170 ft SE
Active in "Issued" for 5.6 yr (first record Mar 11, 2021) with no new permit activity recorded in 4 yr. High-impact scale (4 housing units, $1,975,700 declared valuation across 4 permits).
- Accessory dwelling unit at 114 Florentine Ave (Issued)410 ft E
Active in "Issued" for 7.7 yr (first record Feb 5, 2019) with no new permit activity recorded in 4.1 yr.
Permit & Project History on This Parcel (1 permits, 1 grouped projects)
| Record # | Category | Status | Applied / Issued | Valuation | Description |
|---|---|---|---|---|---|
| 202506098214 | Accessory dwelling unit (new or conversion) | approved | App. Jun 24, 2025 | $52,220 | add 1 adu per state law. 1st floor: add media & kitchen for adu. |