155 Elm Ave
Mill Valley 94941 · Mill Valley · Coordinates: 37.90260, -122.53607
Parcel & Assessor
- Lot size:
- 9,714 sq ft (0.22 ac)
- Assessor use:
- Single-Resid. - Improved
- Addresses on lot:
- 155 ELM AVE; 155 ELM AVE UNIT A
Zoning & Land Use
RS-6 — Single Fam Res (min 6,000 SF) (Mill Valley)
State Housing Pathways Screen (ADU & SB 9)
- ADU or junior ADULikely eligible
Zoned RS-6 (single-family residential): state law allows ADUs where homes are allowed.
- SB 9: two homes on the lotLikely eligible
Zoned RS-6, a single-family residential zone.
- SB 9: split into two lotsLikely eligible
Zoned RS-6, a single-family residential zone. The lot is 9,714 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
- 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 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: $1,925,000 – $2,605,000 · 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
Nearby Activity (½ mile radius, since October 2024)
20 active or recent development projects (20 housing units across completed, permitted, and pipeline stages) and 27 total building permits recorded within ½ mile.
Developments Deserving Closer Investigation & Active Area Builders
- Detached ADU (Issued)On this parcel
Active in "Issued" for 14 mo (first record Sep 3, 2025) with no new permit activity recorded in 14 mo.
- 25 new homes (Entitled)0.37 mi E
Active in "Entitled" for 3.5 yr (first record May 6, 2023) with no new permit activity recorded in 3.5 yr. High-impact scale (25 housing units, 6 deed-restricted affordable across 0 permits).
- New home at 107 Montford Ave (Issued)0.5 mi SW
Active in "Issued" for 3.9 yr (first record Dec 15, 2022) with no new permit activity recorded in 2.5 yr. High-impact scale (1 housing unit, $1,375,000 declared valuation across 1 permit).
- New home (Entitled)250 ft NE
Active in "Entitled" for 4.4 yr (first record May 24, 2022) with no new permit activity recorded in 4.4 yr.
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).