277 A Union St
San Rafael 94901 · San Rafael · Coordinates: 37.97541, -122.51388
Parcel & Assessor
- Lot size:
- 7,405 sq ft (0.17 ac)
- Assessor use:
- Single-Resid. - Improved
- Addresses on lot:
- 277A UNION ST; 277 UNION ST
Zoning & Land Use
MR3 (San Rafael)
State Housing Pathways Screen (ADU & SB 9)
- ADU or junior ADULikely eligible
Zoned MR3 (multifamily residential): state law allows ADUs where homes are allowed. We read MR3 from the zoning code's name; we haven't checked it against San Rafael's code text. On a multifamily lot the state allowance is different: ADUs in non-living space of the building, plus up to eight detached ADUs.
- SB 9: two homes on the lotUnlikely
Zoned MR3 (multifamily residential), not a single-family residential zone. We read MR3 from the zoning code's name; we haven't checked it against San Rafael's code text.
- SB 9: split into two lotsUnlikely
Zoned MR3 (multifamily residential), not a single-family residential zone. We read MR3 from the zoning code's name; we haven't checked it against San Rafael's code text.
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 06041C0457E, effective March 16, 2016
- CGS Alquist-Priolo Earthquake Fault Zone
- Not in an Alquist-Priolo Earthquake Fault Zone
Surrounding Rent & Value Benchmarks (Public Records)
Range: $1,205,000 – $1,631,000 · Status: Off market
HUD Small Area FMR (ZIP 94901) · FY 2026
Studio $2,150 · 1BR $2,580 · 2BR $3,120 · 3BR $3,990 · 4BR $4,130
Nearby Activity (½ mile radius, since October 2024)
7 active or recent development projects (216 housing units across completed, permitted, and pipeline stages) and 23 total building permits recorded within ½ mile.
- New construction1 permit
Developments Deserving Closer Investigation & Active Area Builders
- New home (Issued)On this parcel
Active in "Issued" for 14 mo (first record Sep 3, 2025) with no new permit activity recorded in 14 mo.
- 4 level Bldg & remodel (E) Bldg (Issued)0.25 mi SW
Active in "Issued" for 3.1 yr (first record Sep 6, 2023) with no new permit activity recorded in 3.1 yr. High-impact scale (35 housing units across 0 permits).
- 210 new homes (Entitled)0.44 mi SW
Active in "Entitled" for 18 mo (first record May 13, 2025) with no new permit activity recorded in 18 mo. High-impact scale (210 housing units, 18 deed-restricted affordable across 0 permits).
- New home (Entitled)0.18 mi S
Active in "Entitled" for 6.9 yr (first record Nov 26, 2019) with no new permit activity recorded in 6.9 yr. High-impact scale (1 housing unit, 1 deed-restricted affordable across 0 permits).
Permit & Project History on This Parcel (0 permits, 1 grouped projects)
No building permits recorded on this parcel in our dataset.
State HCD Housing Element APR records on this parcel: 1 entry (report years 2025).