824 Rincon Way
San Rafael 94903 · Santa Venetia · Unincorporated Marin · Coordinates: 38.01734, -122.51471
Executive Verdict · Public-Records Synthesis
Zoned R1-B1 in Unincorporated Marin with likely ministerial ADU eligibility and mapped FEMA AE flood due diligence; benchmark value $1,183,000 ($1,041,000–$1,325,000).
Upsides & Opportunities
- ✓ Ministerial ADU / JADU pathway likely eligible
Zone R1-B1 allows residential use qualifying for ministerial ADU review under state law (1 ADU permit permitted within ¼ mile in 36 months).
Source: Unincorporated Marin zoning · CA Gov. Code 66314
- ✓ Documented permitted upgrades (+$16,478 contributory est.)
Public building records show issued construction/renovation work on this parcel (6 total permits, latest Oct 26, 2026).
Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) (parcel APN)
Watchouts & Due Diligence
- ! FEMA Special Flood Hazard Area (AE, all 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)
- ! 6 slow or stalled nearby projects within ½ mile
Closest lead: New home at 35 Pt Gallinas Rd (0.43 mi SE, 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 (~$14,055/yr at $1,183,000)
Sale triggers reassessment to 1.00% base + ~0.15% voter debt (~$1,171/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:
- 5,924 sq ft (0.14 ac)
- Assessor use:
- Single-Resid. - Improved
- Addresses on lot:
- 824 RINCON WAY
Zoning & Land Use
R1-B1 — Residential Single Family (Unincorporated Marin)
State Housing Pathways Screen (ADU & SB 9)
- ADU or junior ADULikely eligible
Zoned R1-B1 (single-family residential): state law allows ADUs where homes are allowed.
- SB 9: two homes on the lotPossible, with conditions
Zoned R1-B1, a single-family residential zone. FEMA Special Flood Hazard Area (Zone AE) covers all of the lot: the project must meet the National Flood Insurance Program floodplain standards, or the lot needs a map revision.
- SB 9: split into two lotsPossible, with conditions
Zoned R1-B1, a single-family residential zone. The lot is 5,924 sq ft by the assessor, room for two lots of at least 1,200 sq ft, each at least 40% of the original. FEMA Special Flood Hazard Area (Zone AE) covers all of the lot: the project must meet the National Flood Insurance Program floodplain standards, or the lot needs a map revision.
Mapped Hazard Zones on This Lot
- CAL FIRE Fire Hazard Severity Zone
- Not in a State-mapped fire hazard severity zone
- FEMA National Flood Hazard Layer
- Zone AE: 1% annual chance flood (Special Flood Hazard Area) (all 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: $1,041,000 – $1,325,000 · 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
Nearby Activity (½ mile radius, since November 2024)
3 active or recent development projects (2 housing units across completed, permitted, and pipeline stages) and 158 total building permits recorded within ½ mile.
- New construction1 permit
- Adds housing (ADU)2 permits (2 units)
- Demolition1 permit
- Additions & renovations2 permits
- Building systems126 permits
- Repairs3 permits
- Other23 permits
Developments Deserving Closer Investigation & Active Area Builders
- New home at 35 Pt Gallinas Rd (Issued)0.43 mi SE
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 798 Hacienda Way (Applied)0.11 mi SW
In "Applied" for 11.1 yr (since Oct 5, 2015), exceeding the 253d median and 686d 90th percentile for new single-family home permits in Unincorporated Marin (n=121).
- Accessory dwelling unit at 835 Rosal Way (Applied)0.11 mi SE
In "Applied" for 2.2 yr (since Sep 11, 2024), exceeding the 253d median and 686d 90th percentile for new single-family home permits in Unincorporated Marin (n=121).
- Demolition at 1145 Adrian Way (Applied)0.32 mi SE
In "Applied" for 4.9 yr (since Dec 2, 2021), exceeding the 55d median and 261d 90th percentile for demolition permits in Unincorporated Marin (n=130).
Entity-resolved builders & contractors in ½ mile: Owner Builder (2 on parcel, 16 in ½ mi · Remodel / interior alteration); Owner (1 on parcel, 13 in ½ mi · Remodel / interior alteration); Apollo Building And Roofing Group (1 on parcel, 1 in ½ mi · Roof replacement); Bellows Plumbing Heating And Air (1 on parcel, 1 in ½ mi · Other); Lsr Maintenancellc (5 in ½ mi · Remodel / interior alteration).
Permit & Project History on This Parcel (6 permits, 0 grouped projects)
| Record # | Category | Status | Applied / Issued | Valuation | Description |
|---|---|---|---|---|---|
| B48898 | Roof replacement | Issued | Iss. Oct 26, 2026 | $40,000 | ReRoofing |
| B47339 | Other | Issued | Iss. Jun 29, 2026 | $7,730 | Mechanical Appliance |
| 167629 | General repair | Issued | Iss. Mar 31, 2021 | $3,700 | Dry Rot Repair To Eaves And Rafter & Siding |
| 163272 | Remodel / interior alteration | Issued | Iss. Nov 18, 2019 | $35,000 | Kitchn And 2 Bath Rmdl 11/5/19 |
| B16316 | Electrical / panel | Issued | Iss. Nov 13, 2018 | $1,000 | Upgrade electrical panel — Service Upgrade |
| 159901 | Remodel / interior alteration | Issued | Iss. Oct 18, 2018 | $7,000 | Bathroom Rmdl T.D. 10/8/18 |