1105 Western Ave
Mill Valley 94941 · Homestead · Unincorporated Marin · Coordinates: 37.89005, -122.54189
Parcel & Assessor
- Lot size:
- 5,227 sq ft (0.12 ac)
- Assessor use:
- Single-Resid. - Improved
- Addresses on lot:
- 1105 WESTERN AVE; 1107 WESTERN AVE
Zoning & Land Use
R1-B1 — Residential Single Family (Unincorporated Marin)
State Housing Pathways Screen (ADU & SB 9)
- ADU or junior ADULikely eligible
Zoned R1-B1 (single-family residential): state law allows ADUs where homes are allowed.
- SB 9: two homes on the lotLikely eligible
Zoned R1-B1, a single-family residential zone.
- SB 9: split into two lotsLikely eligible
Zoned R1-B1, a single-family residential zone. The lot is 5,227 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
- High Fire Hazard Severity Zone (State Responsibility Area) (all of the lot, map Apr 1, 2024)
- FEMA National Flood Hazard Layer
- Zone X: minimal flood hazard (all of the lot) · FIRM panel 06041C0468F, 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: $1,852,000 – $2,356,000 · Status: Off market
HUD Small Area FMR (ZIP 94941) · FY 2026
Studio $2,730 · 1BR $3,270 · 2BR $3,960 · 3BR $5,060 · 4BR $5,240
Developments Deserving Closer Investigation & Active Area Builders
- Accessory dwelling unit at 1105 Western Ave (Applied)On this parcel
Active in "Applied" for 5.1 yr (first record Sep 7, 2021) with no new permit activity recorded in 4.9 yr.
- New home at 210 Brabo Ter (Issued)0.22 mi N
Active in "Issued" for 3 yr (first record Oct 12, 2023) with no new permit activity recorded in 2.6 yr. High-impact scale (1 housing unit, $850,000 declared valuation across 1 permit).
- New home at 204 Reed St (Issued)0.25 mi N
Active in "Issued" for 4.2 yr (first record Aug 5, 2022) with no new permit activity recorded in 3.5 yr. High-impact scale (1 housing unit, $950,000 declared valuation across 1 permit).
- New home at 560 Alta Way (Applied)0.32 mi S
Active in "Applied" for 3.2 yr (first record Aug 10, 2023) with no new permit activity recorded in 3.2 yr. High-impact scale (1 housing unit, $975,000 declared valuation across 1 permit).
Permit & Project History on This Parcel (7 permits, 1 grouped projects)
| Record # | Category | Status | Applied / Issued | Valuation | Description |
|---|---|---|---|---|---|
| B32062 | Windows / doors / siding | Issued | Iss. Dec 15, 2022 | $10,867 | Update existing, non-structural windows — Non-structural Door/Window Replacement |
| B30224 | HVAC / heat pump | Issued | Iss. Jun 28, 2022 | $22,430 | Installation of Ducted Heat Pump — Mechanical Appliance |
| B29051 | Windows / doors / siding | Issued | Iss. Mar 14, 2022 | $6,000 | Replacing broken sliding door with French door — Non-structural Door/Window Replacement |
| 89321 | Accessory dwelling unit (new or conversion) | Applied | App. Dec 17, 2021 | $200,000 |