301 Perth Way
Inverness 94937 · Inverness · Unincorporated Marin · Coordinates: 38.09518, -122.86616
Executive Verdict · Public-Records Synthesis
Zoned C-RSP-0.33 in Unincorporated Marin and mapped CAL FIRE high fire hazard severity zone (state responsibility area) due diligence; benchmark value $1,620,000 ($1,426,000–$1,814,000).
Upsides & Opportunities
- ✓ Documented permitted upgrades (+$31,500 contributory est.)
Public building records show issued construction/renovation work on this parcel (1 total permit, latest Apr 28, 2016).
Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) (parcel APN)
Watchouts & Due Diligence
- ! Mapped flood awareness zone (Zone X: minimal flood hazard)
all of the lot of the parcel intersects Zone X: minimal flood hazard. Outside mandatory federal SFHA insurance rules, but check local drainage and finished-floor requirements.
Source: FEMA National Flood Hazard Layer (parcel polygon)
- ! CAL FIRE High Fire Hazard Severity Zone (State Responsibility Area) (about 7% of the lot of lot)
Located in a mapped Fire Hazard Severity Zone. Expect Chapter 7A ignition-resistant building standards, defensible-space inspections, and stricter property insurance underwriting.
Source: CAL FIRE FHSZ (map Apr 1, 2024)
- ! Delayed or open permit activity on this parcel
Addition (adds square footage) (151779): Issued after 10 mo (1.9× the 160d median) — above the 75th percentile for addition (adds square footage) permits in Unincorporated Marin (median 160d, 75th pct 249d, n=316).
Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) (review-time benchmark)
- ! 5 slow or stalled nearby projects within ½ mile
Closest lead: New home at 60 Trossach Way (0.28 mi NE, applied). Inspect timeline history before assuming near-term completion.
Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) · HCD APR (½-mile radius)
Parcel & Assessor
- Lot size:
- 136,256 sq ft (3.13 ac)
- Assessor use:
- Single-Resid. - Improved
- Addresses on lot:
- 301 PERTH WAY
Zoning & Land Use
C-RSP-0.33 — Residential Single Family Planned (Unincorporated Marin)
State Housing Pathways Screen (ADU & SB 9)
- ADU or junior ADUPossible, with conditions
Zoned C-RSP-0.33 (single-family residential): state law allows ADUs where homes are allowed. Very High Fire Hazard Severity Zone covers about 93% of the lot: cities may limit ADUs here for fire safety and evacuation.
- SB 9: two homes on the lotPossible, with conditions
Zoned C-RSP-0.33, a single-family residential zone. Very High Fire Hazard Severity Zone (State responsibility area) covers about 93% of the lot: SB 9 requires the project to meet the fire hazard mitigation standards.
- SB 9: split into two lotsPossible, with conditions
Zoned C-RSP-0.33, a single-family residential zone. The lot is 136,256 sq ft by the assessor, room for two lots of at least 1,200 sq ft, each at least 40% of the original. Very High Fire Hazard Severity Zone (State responsibility area) covers about 93% of the lot: SB 9 requires the project to meet the fire hazard mitigation standards.
Mapped Hazard Zones on This Lot
- CAL FIRE Fire Hazard Severity Zone
- High Fire Hazard Severity Zone (State Responsibility Area) (about 7% of the lot, map Apr 1, 2024); Very High Fire Hazard Severity Zone (State Responsibility Area) (about 93% of the lot, map Apr 1, 2024)
- FEMA National Flood Hazard Layer
- Zone X: minimal flood hazard (all of the lot) · FIRM panel 06041C0230E, 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: $1,426,000 – $1,814,000 · Status: Off market
HUD Small Area FMR (ZIP 94937) · FY 2026
Studio $2,400 · 1BR $2,870 · 2BR $3,480 · 3BR $4,450 · 4BR $4,610
Developments Deserving Closer Investigation & Active Area Builders
- New home at 60 Trossach Way (Applied)0.28 mi NE
In "Applied" for 5.9 yr (since Dec 15, 2020), exceeding the 253d median and 686d 90th percentile for new single-family home permits in Unincorporated Marin (n=121). High-impact scale (1 housing unit, $1,400,000 declared valuation across 1 permit).
- Addition (adds square footage) (151779) (Issued)On this parcel
Issued after 10 mo (1.9× the 160d median) — above the 75th percentile for addition (adds square footage) permits in Unincorporated Marin (median 160d, 75th pct 249d, n=316).
- New home at 70 Heather Ln (Issued)0.21 mi N
Active in "Issued" for 12.5 yr (first record Apr 28, 2014) with no new permit activity recorded in 12.2 yr.
- New home at 182 Laurel Ave (Issued)0.26 mi E
Active in "Issued" for 12.9 yr (first record Dec 31, 2013) with no new permit activity recorded in 11.9 yr.
Entity-resolved builders & contractors in ½ mile: Korhummel Paul Frederick (1 on parcel, 2 in ½ mi · Addition (adds square footage)); Oakwood Construction (2 in ½ mi · New garage / accessory structure); Design Build Alliance (2 in ½ mi · Addition (adds square footage)); Owner (2 in ½ mi · Addition (adds square footage)); Owner Builder (2 in ½ mi · Remodel / interior alteration).
Permit & Project History on This Parcel (1 permits, 0 grouped projects)
| Record # | Category | Status | Applied / Issued | Valuation | Description |
|---|---|---|---|---|---|
| 151779 | Addition (adds square footage) | Issued | Iss. Apr 28, 2016 | $70,000 | Addition, Remodel, New Deck T.D. 7/22/15 |