90 Atherton Ave
Novato 94945 · Green Point · Unincorporated Marin · Coordinates: 38.10586, -122.51478
Executive Verdict · Public-Records Synthesis
Zoned ARP-2 in Unincorporated Marin and mapped FEMA AE flood / CAL FIRE moderate fire hazard severity zone (state responsibility area) due diligence; benchmark value $1,216,000 ($1,070,000–$1,362,000).
Upsides & Opportunities
- ✓ Documented permitted upgrades (+$16,560 contributory est.)
Public building records show issued construction/renovation work on this parcel (2 total permits, latest Sep 9, 2024).
Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) (parcel APN)
Watchouts & Due Diligence
- ! FEMA Special Flood Hazard Area (AE, about 28% of the lot of lot)
Zone AE: 1% annual chance flood (Special Flood Hazard Area) overlaps this parcel. Expect mandatory flood insurance for federally backed loans and floodplain elevation/mitigation rules for new units or SB 9 applications.
Source: FEMA National Flood Hazard Layer (parcel polygon)
- ! CAL FIRE Moderate 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)
- ! 6 slow or stalled nearby projects within ½ mile
Closest lead: New home at 50 Lockton Ln (0.34 mi NW, issued). Inspect timeline history before assuming near-term completion.
Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) · HCD APR (½-mile radius)
- ! Year 1 Prop 13 tax reset (~$14,434/yr at $1,216,000)
Sale triggers reassessment to 1.00% base + ~0.15% voter debt (~$1,203/mo). Confirm exact Mello-Roos / CFD special assessments on the county tax bill.
Source: CA Const. Art. XIIIA (Prop 13) · County Tax Collector
Parcel & Assessor
- Lot size:
- 102,584 sq ft (2.36 ac)
- Assessor use:
- Single-Resid. - Improved
- Addresses on lot:
- 90 ATHERTON AVE
Zoning & Land Use
ARP-2 — Agriculture Residential Planned (Unincorporated Marin)
Undesignated — Undesignated (Novato)
State Housing Pathways Screen (ADU & SB 9)
- ADU or junior ADUCan't tell
Zoned ARP-2 (agricultural): ADUs are allowed if the zone allows a home, which depends on the zone's rules. The parcel point also falls in Undesignated.
- SB 9: two homes on the lotUnlikely
Zoned ARP-2 (agricultural), not a single-family residential zone. The parcel point also falls in Undesignated.
- SB 9: split into two lotsUnlikely
Zoned ARP-2 (agricultural), not a single-family residential zone. The parcel point also falls in Undesignated.
Mapped Hazard Zones on This Lot
- CAL FIRE Fire Hazard Severity Zone
- Moderate Fire Hazard Severity Zone (State Responsibility Area) (all of the lot, map Apr 1, 2024)
- FEMA National Flood Hazard Layer
- Zone AE: 1% annual chance flood (Special Flood Hazard Area) (about 28% of the lot); Zone X: minimal flood hazard (about 72% of the lot) · FIRM panel 06041C0282E, 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: $1,070,000 – $1,362,000 · Status: Off market
HUD Small Area FMR (ZIP 94945) · FY 2026
Studio $2,050 · 1BR $2,510 · 2BR $2,990 · 3BR $3,770 · 4BR $3,960
Developments Deserving Closer Investigation & Active Area Builders
- New home at 50 Lockton Ln (Issued)0.34 mi NW
Active in "Issued" for 8.7 yr (first record Feb 21, 2018) with no new permit activity recorded in 8.5 yr. High-impact scale (1 housing unit, $1,090,000 declared valuation across 1 permit).
- New home (Entitled)0.16 mi E
In "Entitled" for 2 yr (since Nov 13, 2024), exceeding the 253d median and 686d 90th percentile for new single-family home permits in Unincorporated Marin (n=121).
- Accessory dwelling unit at 8 Glen Ln (Applied)0.24 mi N
In "Applied" for 2.4 yr (since Jul 2, 2024), exceeding the 253d median and 686d 90th percentile for new single-family home permits in Unincorporated Marin (n=121).
- Accessory dwelling unit at 10 Atherton Oaks Dr (Applied)0.46 mi W
In "Applied" for 5.8 yr (since Feb 10, 2021), exceeding the 253d median and 686d 90th percentile for new single-family home permits in Unincorporated Marin (n=121).
Entity-resolved builders & contractors in ½ mile: Ambrose Construction (1 on parcel, 1 in ½ mi · Solar / battery storage); Cost U Less Roofing (1 on parcel, 1 in ½ mi · Roof replacement); Tj Built Construction (4 in ½ mi · Accessory dwelling unit (new or conversion)); Valencia Landscaping (1 in ½ mi · New single-family home); Alliance Custom Builders (1 in ½ mi · Remodel / interior alteration).
Permit & Project History on This Parcel (2 permits, 0 grouped projects)
| Record # | Category | Status | Applied / Issued | Valuation | Description |
|---|---|---|---|---|---|
| B39424 | Roof replacement | Issued | Iss. Sep 9, 2024 | $21,515 | Roof replacement: Tear off existing roof material and install new cool roof shingles - CCRS 0850-0068 (30sq) — ReRoofing… |
| B39381 | Solar / battery storage | Issued | Iss. Sep 5, 2024 | $70,558 | 12.3kW PV(30xREC410AA PURE-R) & ESS(1xTESLA PW3 1707000-XX-Y) 11.5kW |