45 Wellington Ave
San Anselmo 94960 · Ross · Coordinates: 37.96995, -122.55669
Parcel & Assessor
- Lot size:
- 12,153 sq ft (0.28 ac)
- Assessor use:
- Single-Resid. - Improved
- Addresses on lot:
- 45 WELLINGTON AVE
Zoning & Land Use
R-1_B-10 — SINGLE FAMILY RESIDENTIAL (Ross)
State Housing Pathways Screen (ADU & SB 9)
- ADU or junior ADULikely eligible
Zoned R-1_B-10 (single-family residential): state law allows ADUs where homes are allowed.
- SB 9: two homes on the lotLikely eligible
Zoned R-1_B-10, a single-family residential zone.
- SB 9: split into two lotsLikely eligible
Zoned R-1_B-10, a single-family residential zone. The lot is 12,153 sq ft by the assessor, 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
- Moderate Fire Hazard Severity Zone (Local Responsibility Area) (all of the lot, map Mar 24, 2025)
- FEMA National Flood Hazard Layer
- Zone X: minimal flood hazard (all of the lot) · FIRM panel 06041C0456F, 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: $1,529,000 – $2,069,000 · Status: Off market
HUD Small Area FMR (ZIP 94960) · FY 2026
Studio $2,510 · 1BR $3,010 · 2BR $3,640 · 3BR $4,650 · 4BR $4,820
Nearby Activity (½ mile radius, since October 2024)
13 active or recent development projects (15 housing units across completed, permitted, and pipeline stages) and 1 total building permits recorded within ½ mile.
- Adds housing (ADU)1 permit (1 units)
Developments Deserving Closer Investigation & Active Area Builders
- 25 new homes (Issued)0.5 mi W
Active in "Issued" for 5.8 yr (first record Jan 1, 2021) with no new permit activity recorded in 5.8 yr. High-impact scale (25 housing units across 0 permits).
- 12 Garden (Issued)0.1 mi W
Active in "Issued" for 19 mo (first record Apr 4, 2025) with no new permit activity recorded in 19 mo. High-impact scale (1 housing unit, 1 deed-restricted affordable across 0 permits).
- 5 new homes (Entitled)0.38 mi W
Active in "Entitled" for 2.3 yr (first record Jul 2, 2024) with no new permit activity recorded in 2.3 yr. High-impact scale (5 housing units across 0 permits).
- 45 Ross (Entitled)0.41 mi W
Active in "Entitled" for 6.9 yr (first record Nov 18, 2019) with no new permit activity recorded in 6.9 yr. High-impact scale (6 housing units 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).