673 A Atherton Ave
Novato 94945 · North Novato · Unincorporated Marin · Coordinates: 38.11709, -122.54752
Parcel & Assessor
- Lot size:
- 46,130 sq ft (1.06 ac)
- Assessor use:
- Single-Resid. - Unimproved
- Addresses on lot:
- 673A ATHERTON AVE; 673 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)
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)210 ft NW
Active in "Applied" for 5.4 yr (first record May 18, 2021) with no new permit activity recorded in 5 yr. High-impact scale (1 housing unit, $1,500,000 declared valuation across 3 permits).
- New home at 673 Atherton Ave (Issued)On this parcel
High-impact scale (1 housing unit, $1,000,000 declared valuation across 2 permits).
- New home at 689 Atherton Ave (Issued)0.14 mi S
Active in "Issued" for 16.4 yr (first record May 21, 2010) with no new permit activity recorded in 12.3 yr.
- Accessory dwelling unit at 98 Kristin Marie Ct A K A (Issued)0.15 mi NW
Active in "Issued" for 8.6 yr (first record Mar 20, 2018) with no new permit activity recorded in 8 yr.
Permit & Project History on This Parcel (3 permits, 1 grouped projects)
| Record # | Category | Status | Applied / Issued | Valuation | Description |
|---|---|---|---|---|---|
| 182363 | Accessory dwelling unit (new or conversion) | Issued | Iss. Aug 13, 2026 | $350,000 | Detached A D U |
| 182362 | New single-family home | Issued | Iss. Aug 13, 2026 | $1,000,000 | New S F D; Garage |
| 93490 | Pool / spa | Applied | App. Sep 2, 2025 | — | Pool |