865 Autumn Ln
Mill Valley 94941 · Tamalpais · Unincorporated Marin · Coordinates: 37.87487, -122.54698
Parcel & Assessor
- Lot size:
- 7,579 sq ft (0.17 ac)
- Assessor use:
- Single-Resid. - Improved
- Addresses on lot:
- 865 AUTUMN LN
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 7,579 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 06041C0510E, effective August 15, 2017
- CGS Alquist-Priolo Earthquake Fault Zone
- Not in an Alquist-Priolo Earthquake Fault Zone
Surrounding Rent & Value Benchmarks (Public Records)
Range: $2,047,000 – $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
Developments Deserving Closer Investigation & Active Area Builders
- Accessory dwelling unit at 865 Autumn Ln (Issued)On this parcel
Active in "Issued" for 6 yr (first record Oct 21, 2020) with no new permit activity recorded in 5.7 yr.
- New home at 812 Spring Dr (Issued)0.21 mi NE
Active in "Issued" for 4.1 yr (first record Sep 19, 2022) with no new permit activity recorded in 3.2 yr. High-impact scale (1 housing unit, $1,006,000 declared valuation across 1 permit).
- New home at 808 Spring Dr (Issued)0.22 mi E
Active in "Issued" for 4.9 yr (first record Dec 13, 2021) with no new permit activity recorded in 4.7 yr. High-impact scale (1 housing unit, $850,000 declared valuation across 1 permit).
- New home at 746 Alta Vista Rd (Issued)0.29 mi E
Active in "Issued" for 3.3 yr (first record Jul 19, 2023) with no new permit activity recorded in 2.2 yr. High-impact scale (1 housing unit, $1,183,700 declared valuation across 2 permits).
Permit & Project History on This Parcel (6 permits, 1 grouped projects)
| Record # | Category | Status | Applied / Issued | Valuation | Description |
|---|---|---|---|---|---|
| B48389 | Windows / doors / siding | Issued | Iss. Sep 23, 2026 | $70,000 | Siding Replacement, Non-structural Door/Window Replacement |
| 181923 | Windows / doors / siding | Issued | Iss. Jun 16, 2026 | $12,000 | Replace Structural Beam With A New Single Beam. |
| B27891 | Electrical / panel | Issued | Iss. Nov 26, 2021 | $5,200 | Electrical service upgrade 200A like-for-like — Service Upgrade |
| 168531 | Roof replacement | Issued | Iss. Jun 17, 2021 | $7,545 | Reroof |