816 A Smith Rd
Mill Valley 94941 · Tamalpais · Unincorporated Marin · Coordinates: 37.87480, -122.54207
Parcel & Assessor
- Lot size:
- 4,966 sq ft (0.11 ac)
- Assessor use:
- Single-Resid. - Improved
- Addresses on lot:
- 816A SMITH RD; 816 SMITH RD
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 4,966 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: $2,013,000 – $2,561,000 · 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 816 Smith Rd (adu 816a) (Issued)On this parcel
Active in "Issued" for 2.1 yr (first record Oct 3, 2024) with no new permit activity recorded in 22 mo.
- New home at 808 Spring Dr (Issued)0.1 mi NW
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)0.11 mi N
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).
- New home at 812 Spring Dr (Issued)0.12 mi NW
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).
Permit & Project History on This Parcel (2 permits, 1 grouped projects)
| Record # | Category | Status | Applied / Issued | Valuation | Description |
|---|---|---|---|---|---|
| 178426 | Accessory dwelling unit (new or conversion) | Issued | Iss. Jan 10, 2025 | $60,000 | Attached A D U In Rear Yard; Attached Conc Ret Wall (Contiguous With Foundations) |
| 169113 | New garage / accessory structure | Issued | Iss. Aug 16, 2021 | $310,000 | Add Bdrm, Bath, Fam Rm, Utility Rm, Int Stair; Firepl Gas Insert |
State HCD Housing Element APR records on this parcel: 1 entry (report years 2025).