677 Atherton Ave
Novato 94945 · North Novato · Unincorporated Marin · Coordinates: 38.11749, -122.54834
Executive Verdict · Public-Records Synthesis
Zoned A2-B4 in Unincorporated Marin and mapped CAL FIRE moderate fire hazard severity zone (state responsibility area) due diligence; benchmark value $1,470,000 ($1,294,000–$1,646,000).
Upsides & Opportunities
- ✓ Documented permitted upgrades (+$186,210 contributory est.)
Public building records show issued construction/renovation work on this parcel (6 total permits, latest Feb 18, 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 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)
- ! Delayed or open permit activity on this parcel
Pool / spa (150146): Issued after 23 mo (5.1× the 136d median) — slower than 90% of pool / spa permits in Unincorporated Marin (median 136d, 90th pct 393d, n=162).
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 675 Atherton Ave (150 ft 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)
Parcel & Assessor
- Lot size:
- 56,280 sq ft (1.29 ac)
- Assessor use:
- Single-Resid. - Improved
- Addresses on lot:
- 677 ATHERTON AVE
Zoning & Land Use
A2-B4 — Agriculture Limited (Unincorporated Marin)
Undesignated — Undesignated (Novato)
State Housing Pathways Screen (ADU & SB 9)
- ADU or junior ADUCan't tell
Zoned A2-B4 (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-B4 (agricultural), not a single-family residential zone. The parcel point also falls in Undesignated.
- SB 9: split into two lotsUnlikely
Zoned A2-B4 (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 X: minimal flood hazard (all of the lot) · FIRM panel 06041C0281E, 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: $1,294,000 – $1,646,000 · 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 675 Atherton Ave (Applied)150 ft E
In "Applied" for 5.5 yr (since May 18, 2021), 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, $1,500,000 declared valuation across 3 permits).
- Pool / spa (150146) (Issued)On this parcel
Issued after 23 mo (5.1× the 136d median) — slower than 90% of pool / spa permits in Unincorporated Marin (median 136d, 90th pct 393d, n=162).
- New home at 569 Atherton Ave (Applied)0.48 mi SE
In "Applied" for 9.9 yr (since Dec 20, 2016), exceeding the 253d median and 686d 90th percentile for new single-family home permits in Unincorporated Marin (n=121).
- Accessory dwelling unit at 98 Kristin Marie Ct A K A (Issued)520 ft NW
Active in "Issued" for 8.6 yr (first record Mar 20, 2018) with no new permit activity recorded in 8.1 yr.
Entity-resolved builders & contractors in ½ mile: Riptide Construction (1 on parcel, 1 in ½ mi · Pool / spa); Hooked On Solar (1 on parcel, 1 in ½ mi · Solar / battery storage); Bei (1 on parcel, 1 in ½ mi · Plumbing / water heater / sewer); Marin H20 (1 on parcel, 1 in ½ mi · Plumbing / water heater / sewer); Owner Builder (16 in ½ mi · New garage / accessory structure).
Permit & Project History on This Parcel (6 permits, 1 grouped projects)
| Record # | Category | Status | Applied / Issued | Valuation | Description |
|---|---|---|---|---|---|
| B41287 | Plumbing / water heater / sewer | Issued | Iss. Feb 18, 2025 | $4,500 | replace water service from meter to house — Replace Plumbing Fixtures(s) |
| 165106 | Solar / battery storage | Issued | Iss. Jul 14, 2020 | $30,000 | Rooftop Solar 9.00 K W - Express |
| 165036 | Plumbing / water heater / sewer | Issued | Iss. Jul 1, 2020 | $20,073 | Generator. Fastrack T.D. 6/24/20 |
| 157926 | New garage / accessory structure | Issued | Iss. Mar 15, 2018 | $5,000 | Trellis T.D. 12/20/17 |