81 Cornelia Ave
Mill Valley 94941 · Mill Valley · Coordinates: 37.90852, -122.55350
Parcel & Assessor
- Lot size:
- 15,725 sq ft (0.36 ac)
- Assessor use:
- Single-Resid. - Improved
- Addresses on lot:
- 81 CORNELIA AVE; 81 CORNELIA AVE UNIT A
Zoning & Land Use
RS-7.5 — Single Fam Res (min 7,500 SF) (Mill Valley)
State Housing Pathways Screen (ADU & SB 9)
- ADU or junior ADULikely eligible
Zoned RS-7.5 (single-family residential): state law allows ADUs where homes are allowed.
- SB 9: two homes on the lotLikely eligible
Zoned RS-7.5, a single-family residential zone.
- SB 9: split into two lotsLikely eligible
Zoned RS-7.5, a single-family residential zone. The lot is 15,725 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 (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 06041C0466F, 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: $1,998,000 – $2,703,000 · 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)
13 active or recent development projects (17 housing units across completed, permitted, and pipeline stages) and 5 total building permits recorded within ½ mile.
- Building systems4 permits
- Other1 permit
Developments Deserving Closer Investigation & Active Area Builders
- Convert Unconditioned (Issued)On this parcel
Active in "Issued" for 2.6 yr (first record Mar 28, 2024) with no new permit activity recorded in 2.6 yr.
- MFR/Office Overlay (Entitled)0.42 mi SE
Active in "Entitled" for 13 mo (first record Oct 13, 2025) with no new permit activity recorded in 13 mo. High-impact scale (5 housing units across 0 permits).
- New home (Entitled)0.42 mi E
Active in "Entitled" for 6.1 yr (first record Sep 9, 2020) with no new permit activity recorded in 6.1 yr. High-impact scale (1 housing unit, 1 deed-restricted affordable across 0 permits).
- Attached ADU (Entitled)500 ft SW
Active in "Entitled" for 3.9 yr (first record Dec 22, 2022) with no new permit activity recorded in 3.9 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 2024).