471 Throckmorton Ave
Mill Valley 94941 · Mill Valley · Coordinates: 37.90778, -122.55742
Parcel & Assessor
- Lot size:
- 28,880 sq ft (0.66 ac)
- Assessor use:
- Single-Resid. - Improved
- Addresses on lot:
- 471 THROCKMORTON AVE; 471 THROCKMORTON 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 28,880 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: $2,066,000 – $2,795,000 · 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)
11 active or recent development projects (11 housing units across completed, permitted, and pipeline stages) and 9 total building permits recorded within ½ mile.
Developments Deserving Closer Investigation & Active Area Builders
- New home (Issued)On this parcel
Active in "Issued" for 8.2 yr (first record Aug 28, 2018) with no new permit activity recorded in 8.2 yr.
- conversion of exisitng space (Issued)320 ft N
Active in "Issued" for 6 yr (first record Nov 4, 2020) with no new permit activity recorded in 6 yr.
- New home (Issued)0.12 mi NW
Active in "Issued" for 9.1 yr (first record Sep 15, 2017) with no new permit activity recorded in 9.1 yr.
- Attached ADU (Entitled)0.17 mi E
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, 2 grouped projects)
No building permits recorded on this parcel in our dataset.
State HCD Housing Element APR records on this parcel: 2 entries (report years 2018, 2023).