Parcel Context · Public-Records Property BriefAPN 164-650-15
103 A Erin Ct
San Rafael 94903 · Marinwood · Unincorporated Marin · Coordinates: 38.02589, -122.54350
Parcel & Assessor
- Lot size:
- 29,272 sq ft (0.67 ac)
- Assessor use:
- Single-Resid. - Unimproved
- Addresses on lot:
- 103A ERIN CT; 103 ERIN CT
Zoning & Land Use
RMP-1.38 — Residential Multiple Planned (Unincorporated Marin)
State Housing Pathways Screen (ADU & SB 9)
- ADU or junior ADULikely eligible
Zoned RMP-1.38 (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. The assessor lists the lot as vacant: an ADU needs an existing or proposed main home.
- SB 9: two homes on the lotUnlikely
Zoned RMP-1.38 (multifamily residential), not a single-family residential zone.
- SB 9: split into two lotsUnlikely
Zoned RMP-1.38 (multifamily residential), not a single-family residential zone.
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 06041C0293E, 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 94903) · FY 2026
Studio $2,880 · 1BR $3,450 · 2BR $4,180 · 3BR $5,340 · 4BR $5,530
ACS 2020–2024 Median Gross Rent (Marinwood):$3,500+ Source: ACS 2020–2024 5-year estimates. Geography: Marinwood.
ACS 2020–2024 Median Gross Rent (ZIP 94903):$2,982±$267 Source: ACS 2020–2024 5-year estimates. Geography: San Rafael.
Zillow Home Value Index (ZIP 94903, September 2026):$1,250,063
ACS 2020–2024 Median Home Value (Marinwood):$1,267,000±$76,000 Source: ACS 2020–2024 5-year estimates. Geography: Marinwood.
ACS 2020–2024 Median Home Value (ZIP 94903):
Permit & Project History on This Parcel (2 permits, 1 grouped projects)
Accessory dwelling unit at 103 Erin Ct (adu 103 A) - LotStage: Issued · 1 units · $705,832 declared valuation · Last record Oct 20, 2026
| Record # | Category | Status | Applied / Issued | Valuation | Description |
|---|---|---|---|---|---|
| 182770 | Accessory dwelling unit (new or conversion) | Issued | Iss. Oct 20, 2026 | $705,832 | New S F D; A D U; Garage & Covered Porch/Decks; Decks Lot 15 |
| 178476 | General repair | Issued | Iss. Jan 17, 2025 | $26,800 | Retaining Wall |