680 N San Pedro Rd
San Rafael 94903 · Santa Venetia · Unincorporated Marin · Coordinates: 38.00961, -122.50129
Executive Verdict · Public-Records Synthesis
Zoned RMP-0.2 in Unincorporated Marin with likely ministerial ADU eligibility and mapped FEMA AE flood / CAL FIRE moderate fire hazard severity zone (state responsibility area) due diligence; benchmark value $1,168,000 ($1,028,000–$1,308,000).
Upsides & Opportunities
- ✓ Ministerial ADU / JADU pathway likely eligible
Zone RMP-0.2 allows residential use qualifying for ministerial ADU review under state law.
Source: Unincorporated Marin zoning · CA Gov. Code 66314
- ✓ 1 documented municipal building permit on file
On-parcel permit history is indexed through Jul 30, 2014, 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
- ! FEMA Special Flood Hazard Area (AE, about 30% 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) (about 71% 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)
- ! 5 slow or stalled nearby projects within ½ mile
Closest lead: New home at 35 Pt Gallinas Rd (0.49 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 (~$13,882/yr at $1,168,000)
Sale triggers reassessment to 1.00% base + ~0.15% voter debt (~$1,157/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:
- 3,891,041 sq ft (89.33 ac)
- Assessor use:
- Multiple-Resid. - Improved
- Addresses on lot:
- 680 N SAN PEDRO RD
Zoning & Land Use
RMP-0.2 — Residential Multiple Planned (Unincorporated Marin)
State Housing Pathways Screen (ADU & SB 9)
- ADU or junior ADULikely eligible
Zoned RMP-0.2 (multifamily residential): state law allows ADUs where homes are allowed. On a multifamily lot the state allowance is different: ADUs in non-living space of the building, plus up to eight detached ADUs.
- SB 9: two homes on the lotUnlikely
Zoned RMP-0.2 (multifamily residential), not a single-family residential zone.
- SB 9: split into two lotsUnlikely
Zoned RMP-0.2 (multifamily residential), not a single-family residential zone.
Mapped Hazard Zones on This Lot
- CAL FIRE Fire Hazard Severity Zone
- Moderate Fire Hazard Severity Zone (State Responsibility Area) (about 71% of the lot, map Apr 1, 2024); Moderate Fire Hazard Severity Zone (Local Responsibility Area) (about 16% of the lot, map Mar 24, 2025)
- FEMA National Flood Hazard Layer
- Zone AE: 1% annual chance flood (Special Flood Hazard Area) (about 30% of the lot); Zone X: minimal flood hazard (about 70% of the lot) · FIRM panel 06041C0294E, 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: $1,028,000 – $1,308,000 · Status: Off market
HUD Small Area FMR (ZIP 94903) · FY 2026
Studio $2,880 · 1BR $3,450 · 2BR $4,180 · 3BR $5,340 · 4BR $5,530
Developments Deserving Closer Investigation & Active Area Builders
- New home at 35 Pt Gallinas Rd (Issued)0.49 mi NW
Active in "Issued" for 9.5 yr (first record May 24, 2017) with no new permit activity recorded in 9.3 yr. High-impact scale (1 housing unit, $2,367,450 declared valuation across 1 permit).
- Accessory dwelling unit at 27 Sunny Oaks Dr (aka 29) (Applied)0.41 mi W
In "Applied" for 3.5 yr (since May 2, 2023), exceeding the 253d median and 686d 90th percentile for new single-family home permits in Unincorporated Marin (n=121).
- Demolition at 650 N San Pedro Rd (Issued)0.3 mi NW
Active in "Issued" for 13.1 yr (first record Oct 22, 2013) with no new permit activity recorded in 12 yr.
- New home at 665 N San Pedro Rd (Issued)0.41 mi N
Active in "Issued" for 6.8 yr (first record Feb 11, 2020) with no new permit activity recorded in 6.7 yr.
Entity-resolved builders & contractors in ½ mile: Real Goods Solar Marin (1 on parcel, 1 in ½ mi · Solar / battery storage); Owner Builder (6 in ½ mi · New garage / accessory structure); Redhorse Constructors (2 in ½ mi · New garage / accessory structure); Charles And Sons Builders (2 in ½ mi · Remodel / interior alteration); Sarter Construction And Design (1 in ½ mi · New single-family home).
Permit & Project History on This Parcel (1 permits, 0 grouped projects)
| Record # | Category | Status | Applied / Issued | Valuation | Description |
|---|---|---|---|---|---|
| 143525 | Solar / battery storage | Issued | Iss. Jul 30, 2014 | $16,705 | Rf Mtd P V Sys 3.58 K W - Express |