50 Argyle St
Inverness 94937 · Inverness · Unincorporated Marin · Coordinates: 38.10159, -122.85718
Executive Verdict · Public-Records Synthesis
Zoned C-RSP-1 in Unincorporated Marin and mapped CAL FIRE very high fire hazard severity zone (state responsibility area) due diligence; benchmark value $1,638,000 ($1,441,000–$1,835,000).
Upsides & Opportunities
- ✓ Documented permitted upgrades (+$18,873 contributory est.)
Public building records show issued construction/renovation work on this parcel (7 total permits, latest Dec 24, 2025).
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 Very High Fire Hazard Severity Zone (State Responsibility Area) (all 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
Remodel / interior alteration (93864): Pending in review for 11 mo (3.9× the 83d median) — slower than 90% of remodel / interior alteration permits in Unincorporated Marin (median 83d, 90th pct 266d, n=1,054).
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 (0.38 mi SW, 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:
- 7,623 sq ft (0.17 ac)
- Assessor use:
- Single-Resid. - Improved
- Addresses on lot:
- 50 ARGYLE ST
Zoning & Land Use
C-RSP-1 — Residential Single Family Planned (Unincorporated Marin)
State Housing Pathways Screen (ADU & SB 9)
- ADU or junior ADUPossible, with conditions
Zoned C-RSP-1 (single-family residential): state law allows ADUs where homes are allowed. Very High Fire Hazard Severity Zone covers all 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-1, a single-family residential zone. Very High Fire Hazard Severity Zone (State responsibility area) covers all 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-1, a single-family residential zone. The lot is 7,623 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 all 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
- Very 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 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: $1,441,000 – $1,835,000 · 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)0.38 mi SW
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).
- Remodel / interior alteration (93864) (Applied)On this parcel
Pending in review for 11 mo (3.9× the 83d median) — slower than 90% of remodel / interior alteration permits in Unincorporated Marin (median 83d, 90th pct 266d, n=1,054).
- New home at 179 Keith Way (Issued)0.42 mi W
Active in "Issued" for 17 mo (first record Jun 9, 2025) with no new permit activity recorded in 10 mo. High-impact scale (1 housing unit, $1,160,000 declared valuation across 1 permit).
- Accessory dwelling unit at 125 Forres Way (Issued)0.28 mi SW
Active in "Issued" for 20 mo (first record Mar 14, 2025) with no new permit activity recorded in 19 mo.
Entity-resolved builders & contractors in ½ mile: Ielmorini Electric (2 on parcel, 2 in ½ mi · Electrical / panel); High Definition Solar (1 on parcel, 1 in ½ mi · Solar / battery storage); Ramon Garcia Roofing (1 on parcel, 1 in ½ mi · Roof replacement); Elite Energy Electric (1 on parcel, 1 in ½ mi · Solar / battery storage); Bellows Plumbing Heating And Air (1 on parcel, 1 in ½ mi · HVAC / heat pump).
Permit & Project History on This Parcel (7 permits, 0 grouped projects)
| Record # | Category | Status | Applied / Issued | Valuation | Description |
|---|---|---|---|---|---|
| 93864 | Remodel / interior alteration | Applied | App. Dec 24, 2025 | $100,000 | Bathroom, Laundry Room And Downstairs Bedroom Remodel |
| B37575 | Solar / battery storage | Issued | Iss. Apr 23, 2024 | $10,000 | Adding ESS battery to existing solar system |
| B33454 | EV charger | Issued | Iss. Apr 15, 2023 | $3,860 | EV charger install — EV Charging Station; With Electronic Inspection |
| B33217 | Roof replacement | Issued | Iss. Mar 29, 2023 | $16,650 | TEAR OFF COMPOSITION SHINGLES INSTALL COMPOSITION SHINGLES BACK ON — ReRoofing |
| B33115 | Solar / battery storage | Issued | Iss. Mar 23, 2023 |