275 Grandview Ave
Novato 94945 · Black Point · Unincorporated Marin · Coordinates: 38.10611, -122.49972
Executive Verdict · Public-Records Synthesis
Zoned A2 in Unincorporated Marin and mapped CAL FIRE high fire hazard severity zone (state responsibility area) due diligence; benchmark value $1,239,000 ($1,090,000–$1,388,000).
Upsides & Opportunities
- ✓ 3 documented municipal building permits on file
On-parcel permit history is indexed through May 22, 2025, letting you verify roof, HVAC, electrical, or structural work against seller disclosures.
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) (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: Accessory dwelling unit at 315 Laurel Ave (0.17 mi E, 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)
- ! Year 1 Prop 13 tax reset (~$14,699/yr at $1,239,000)
Sale triggers reassessment to 1.00% base + ~0.15% voter debt (~$1,225/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:
- 8,407 sq ft (0.19 ac)
- Assessor use:
- Single-Resid. - Improved
- Addresses on lot:
- 275 GRANDVIEW AVE
Zoning & Land Use
A2 — Agriculture Limited (Unincorporated Marin)
Undesignated — Undesignated (Novato)
State Housing Pathways Screen (ADU & SB 9)
- ADU or junior ADUCan't tell
Zoned A2 (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 A2 (agricultural), not a single-family residential zone. The parcel point also falls in Undesignated.
- SB 9: split into two lotsUnlikely
Zoned A2 (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
- 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 06041C0301E, 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: $1,090,000 – $1,388,000 · 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
- Accessory dwelling unit at 315 Laurel Ave (Applied)0.17 mi E
In "Applied" for 2.8 yr (since Feb 7, 2024), exceeding the 253d median and 686d 90th percentile for new single-family home permits in Unincorporated Marin (n=121).
- Accessory dwelling unit at 363 Grandview Ave (Applied)0.2 mi S
In "Applied" for 2.5 yr (since Apr 26, 2024), exceeding the 253d median and 686d 90th percentile for new single-family home permits in Unincorporated Marin (n=121).
- New home at 5 Bay Canyon Rd (Applied)0.27 mi NW
In "Applied" for 2.3 yr (since Jul 30, 2024), exceeding the 253d median and 686d 90th percentile for new single-family home permits in Unincorporated Marin (n=121).
- Accessory dwelling unit at 302 Grandview Ave (Issued)290 ft SW
Active in "Issued" for 3.5 yr (first record May 30, 2023) with no new permit activity recorded in 3.5 yr.
Entity-resolved builders & contractors in ½ mile: Ernest Ongaro And Sons (1 on parcel, 1 in ½ mi · HVAC / heat pump); Aaero Heating And Sheet Metal (1 on parcel, 1 in ½ mi · HVAC / heat pump); Thompson Electric (1 on parcel, 1 in ½ mi · Electrical / panel); Owner Builder (6 in ½ mi · New garage / accessory structure); Owner (4 in ½ mi · Remodel / interior alteration).
Permit & Project History on This Parcel (3 permits, 0 grouped projects)
| Record # | Category | Status | Applied / Issued | Valuation | Description |
|---|---|---|---|---|---|
| B42493 | HVAC / heat pump | Issued | Iss. May 22, 2025 | $18,000 | Replace 5 runs of failed ducting with new ducting and Install heat pump new — Replace Ductwork, Mechanical Appliance |
| B42394 | Electrical / panel | Issued | Iss. May 13, 2025 | $3,000 | Replace main electric service with new 200Amp service. New panel to be install in the existing location or per PG&E requ… |
| 150552 | HVAC / heat pump | Issued | Iss. Jan 28, 2016 | $3,968 | Repl Furnace |