13 Portola Ave
San Rafael 94903 · Santa Venetia · Unincorporated Marin · Coordinates: 37.99648, -122.52530
Parcel & Assessor
- Lot size:
- 7,405 sq ft (0.17 ac)
- Assessor use:
- Single-Resid. - Improved
- Addresses on lot:
- 13 PORTOLA AVE; 15 PORTOLA AVE
Zoning & Land Use
R1 — Residential Single Family (Unincorporated Marin)
State Housing Pathways Screen (ADU & SB 9)
- ADU or junior ADULikely eligible
Zoned R1 (single-family residential): state law allows ADUs where homes are allowed.
- SB 9: two homes on the lotLikely eligible
Zoned R1, a single-family residential zone.
- SB 9: split into two lotsLikely eligible
Zoned R1, a single-family residential zone. The lot is 7,405 sq ft by the assessor, room for two lots of at least 1,200 sq ft, each at least 40% of the original.
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 06041C0457E, 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: $1,192,000 – $1,516,000 · 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
- Accessory dwelling unit at 15 Portola Ave (Issued)On this parcel
Active in "Issued" for 10.1 yr (first record Oct 3, 2016) with no new permit activity recorded in 9.4 yr.
- New commercial building at 170 N San Pedro Rd (Issued)0.22 mi NE
Active in "Issued" for 4.9 yr (first record Dec 1, 2021) with no new permit activity recorded in 4.3 yr. High-impact scale ($18,000,000 declared valuation across 1 permit).
- Accessory dwelling unit at 10 Carmel Ct (Issued)240 ft SE
Active in "Issued" for 10.2 yr (first record Aug 29, 2016) with no new permit activity recorded in 9.2 yr.
- New home at 8 Edgehill Wy (Applied)0.11 mi SE
Active in "Applied" for 10.7 yr (first record Feb 4, 2016) with no new permit activity recorded in 10.7 yr.
Permit & Project History on This Parcel (1 permits, 1 grouped projects)
| Record # | Category | Status | Applied / Issued | Valuation | Description |
|---|---|---|---|---|---|
| 155595 | Accessory dwelling unit (new or conversion) | Issued | Iss. May 31, 2017 | $250,000 | Rmdl, Legal 2nd Unit, Deck - Bwop***Extended To 5/31/19 T.D. 11/9/16 |