503 B St
Point Reyes Station 94956 · Pt. Reyes Station · Unincorporated Marin · Coordinates: 38.06860, -122.80895
Executive Verdict · Public-Records Synthesis
Zoned C-RA-B2 in Unincorporated Marin with likely ministerial ADU eligibility and mapped CAL FIRE moderate fire hazard severity zone (state responsibility area) due diligence; benchmark value $1,842,000 ($1,621,000–$2,063,000).
Upsides & Opportunities
- ✓ Ministerial ADU / JADU pathway likely eligible
Zone C-RA-B2 allows residential use qualifying for ministerial ADU review under state law (2 ADU permits permitted within ¼ mile in 36 months).
Source: Unincorporated Marin zoning · CA Gov. Code 66314
- ✓ Documented permitted upgrades (+$35,280 contributory est.)
Public building records show issued construction/renovation work on this parcel (9 total permits, latest Aug 19, 2026).
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
Solar / battery storage (182337): Issued after 3 mo — slower than 90% of solar / battery storage permits in Unincorporated Marin (median 0d, 90th pct 2d, n=2,977).
Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) (review-time benchmark)
- ! 4 slow or stalled nearby projects within ½ mile
Closest lead: 5 new homes at 11401 State Route (0.12 mi 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:
- 40,729 sq ft (0.94 ac)
- Assessor use:
- Exemption - Improved
- Addresses on lot:
- 503 B ST
Zoning & Land Use
C-RA-B2 — Residential Agriculture (Unincorporated Marin)
State Housing Pathways Screen (ADU & SB 9)
- ADU or junior ADULikely eligible
Zoned C-RA-B2 (single-family residential): state law allows ADUs where homes are allowed.
- SB 9: two homes on the lotCan't tell
Zoned C-RA-B2 (single-family residential): we can't tell whether it counts as a single-family zone for SB 9. Residential agriculture, estate and restricted: large-lot residential; confirm SB 9 with the county.
- SB 9: split into two lotsCan't tell
Zoned C-RA-B2 (single-family residential): we can't tell whether it counts as a single-family zone for SB 9. Residential agriculture, estate and restricted: large-lot residential; confirm SB 9 with the county.
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 06041C0233D, effective May 4, 2009
- CGS Alquist-Priolo Earthquake Fault Zone
- Not in an Alquist-Priolo Earthquake Fault Zone
Surrounding Rent & Value Benchmarks (Public Records)
Range: $1,621,000 – $2,063,000 · Status: Off market
HUD Small Area FMR (ZIP 94956) · FY 2026
Studio $2,050 · 1BR $2,510 · 2BR $2,990 · 3BR $3,730 · 4BR $3,960
Nearby Activity (½ mile radius, since November 2024)
5 active or recent development projects (8 housing units across completed, permitted, and pipeline stages) and 123 total building permits recorded within ½ mile.
- New construction14 permits
- Adds housing (ADU)4 permits (4 units)
- Additions & renovations5 permits
- Building systems89 permits
- Other11 permits
Developments Deserving Closer Investigation & Active Area Builders
- 5 new homes at 11401 State Route (Applied)0.12 mi E
In "Applied" for 2.6 yr (since Apr 10, 2024), exceeding the 292d median and 313d 90th percentile for new multifamily / condos / mixed-use permits in Unincorporated Marin (n=21). High-impact scale (5 housing units, $1,200,000 declared valuation across 1 permit).
- Solar / battery storage (182337) (Issued)On this parcel
Issued after 3 mo — slower than 90% of solar / battery storage permits in Unincorporated Marin (median 0d, 90th pct 2d, n=2,977).
- HVAC / heat pump (175752) (Issued)On this parcel
Issued after 5 mo — slower than 90% of hvac / heat pump permits in Unincorporated Marin (median 0d, 90th pct 0d, n=2,946).
- New home at 350 Mesa Rd (Issued)0.28 mi NW
Active in "Issued" for 4.3 yr (first record Jul 21, 2022) with no new permit activity recorded in 3.3 yr. High-impact scale (1 housing unit, $1,370,000 declared valuation across 1 permit).
Entity-resolved builders & contractors in ½ mile: Sun Solar Electric (2 on parcel, 2 in ½ mi · Electrical / panel); American Solar (1 on parcel, 1 in ½ mi · Solar / battery storage); Stevenson Mechanical (1 on parcel, 1 in ½ mi · HVAC / heat pump); Ontop Weather Roofing (1 on parcel, 1 in ½ mi · Roof replacement); North Cal Restoration And Construction (1 on parcel, 1 in ½ mi · Windows / doors / siding).
Permit & Project History on This Parcel (9 permits, 0 grouped projects)
| Record # | Category | Status | Applied / Issued | Valuation | Description |
|---|---|---|---|---|---|
| 182337 | Solar / battery storage | Issued | Iss. Aug 19, 2026 | $49,412 | 5.22kw Dc Roof-Mounted Pv Array W/ 15kwh Battery Ess Installation |
| B46470 | Electrical / panel | Issued | Iss. Apr 13, 2026 | $2,000 | New Circuits / Outlets |
| B46065 | Roof replacement | Issued | Iss. Mar 4, 2026 | $24,500 | ReRoofing; With Electronic Inspection |
| B42749 | Solar / battery storage | Issued | Iss. Jun 13, 2025 | $98,299 | Installation of 9.84kW PV system on rooftop, flushmount. (24) 410w PV Modules, (12) RSD devices, Installation of ESS sys… |
| B42699 | Roof replacement | Issued | Iss. Jun 10, 2025 | $8,686 | We are only removing and replacing one section of the roof 9 sq. The whole roof is 48 sq. — ReRoofing; With Electronic I… |
| 175752 | HVAC / heat pump | Issued | Iss. Jan 12, 2024 | $38,410 | Remove (E) Type 2 Hood And Replace W/ (N) Type 1 & Associated Ducting + Electrical T.D. 11/29/23 |
| B32373 | HVAC / heat pump | Issued | Iss. Jan 24, 2023 | $8,150 | DUCT REPLACEMENT ONLY — Replace Ductwork |
| B27649 | HVAC / heat pump | Issued | Iss. Nov 4, 2021 | $6,013 | Remove and Replace Furnace with Bryant 95% AFUE Furnace Model# 915SB036060E14 complete with all final connections. — Rep… |
| B14660 | Windows / doors / siding | Issued | Iss. Apr 4, 2018 | $16,300 | Remove Vrustic siding with Redwood siding — Siding Replacement |