Parcel Context · Public-Records Property BriefBlock/lot 6113/039
665 Colby St
San Francisco · Portola · San Francisco · Coordinates: 37.72218, -122.41085
Parcel & Assessor
- Lot size:
- —
- Assessor use:
- —
- Addresses on lot:
- 665 COLBY 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 4,201 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 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
ACS 2020–2024 Median Gross Rent (Portola):$2,094±$410 Source: ACS 2020–2024 5-year estimates. Geography: Portola.
ACS 2020–2024 Median Home Value (Portola):$1,212,000±$35,800 Source: ACS 2020–2024 5-year estimates. Geography: Portola.
Nearby Activity (½ mile radius, since October 2024)
15 active or recent development projects (18 housing units across completed, permitted, and pipeline stages) and 404 total building permits recorded within ½ mile.
- New construction1 permit (1 units)
- Adds housing (ADU)11 permits (11 units)
- Additions & renovations110 permits
- Building systems242 permits
Permit & Project History on This Parcel (5 permits, 2 grouped projects)
New home at 665 Colby StStage: Issued · 1 units · $85,000 declared valuation · Last record Sep 5, 2026
New home at 665 Colby StStage: Issued · 1 units · $200,000 declared valuation · Last record Dec 9, 2019
| Record # | Category | Status | Applied / Issued | Valuation | Description |
|---|---|---|---|---|---|
| 202607315900 | Accessory dwelling unit (new or conversion) | filed | App. Sep 5, 2026 | $85,000 | erect new 1-story type vb detached adu in rear yard. |
| 202508082633 | Plan revision / deferred submittal | issued | Iss. Aug 8, 2025 | $7,500 | revision to pa # 202405061438: enlarge office by relocating the proposed partition wall at 2nd fl. revise windows to vin… |
| 202409100408 | Roof replacement | issued | Iss. Sep 23, 2024 | $82,000 | infill light well and convert roof deck into relocated (n) kitchen and convert (e) kitchen into (n) bedroom located at 3… |