2246 Mar East St
Tiburon 94920 · Tiburon · Coordinates: 37.87490, -122.44649
Executive Verdict · Public-Records Synthesis
Zoned Marine in Tiburon and mapped FEMA VE flood due diligence; benchmark value $3,793,000 ($3,224,000–$4,362,000).
Upsides & Opportunities
- ✓ Area valuation benchmark anchored at $3,793,000
Estimated range $3,224,000–$4,362,000 derived from area zhvi + acs + permit benchmark and 30,840 sq ft lot geometry.
Source: ZIP 94920 Zillow Home Value Index ($3,404,730, September 2026) (Data provided by Zillow)
Watchouts & Due Diligence
- ! FEMA Special Flood Hazard Area (VE, about 97% of the lot of lot)
Zone VE: 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 (430 ft W, 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)
- ! Bulk building permits not published for Tiburon
Permit counts and nearby activity on this page may omit municipal counter records. Request a parcel permit report directly from the local building department.
Source: Source coverage registry (Tiburon)
- ! Year 1 Prop 13 tax reset (~$44,070/yr at $3,793,000)
Sale triggers reassessment to 1.00% base + ~0.15% voter debt (~$3,672/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:
- 30,840 sq ft (0.71 ac)
- Assessor use:
- Multiple-Resid. - Improved
- Addresses on lot:
- 2246 MAR EAST ST
Zoning & Land Use
Marine — Marine (Tiburon)
State Housing Pathways Screen (ADU & SB 9)
- ADU or junior ADUCan't tell
Zoned Marine (other): ADUs are allowed if the zone allows a home, which depends on the zone's rules.
- SB 9: two homes on the lotUnlikely
Zoned Marine (other), not a single-family residential zone.
- SB 9: split into two lotsUnlikely
Zoned Marine (other), not a single-family residential zone.
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 VE: 1% annual chance flood (Special Flood Hazard Area) (about 97% of the lot); Zone X: minimal flood hazard (about 3% of the lot) · FIRM panel 06041C0489E, 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: $3,224,000 – $4,362,000 · Status: Off market
HUD Small Area FMR (ZIP 94920) · FY 2026
Studio $2,820 · 1BR $3,380 · 2BR $4,100 · 3BR $5,230 · 4BR $5,420
Nearby Activity (½ mile radius, since November 2024)
9 active or recent development projects (9 housing units across completed, permitted, and pipeline stages) and 28 total building permits recorded within ½ mile.
Developments Deserving Closer Investigation & Active Area Builders
- New home (Issued)430 ft W
Active in "Issued" for 3.4 yr (first record Jul 6, 2023) with no new permit activity recorded in 3.4 yr.
- New home (Entitled)0.12 mi W
Active in "Entitled" for 20 mo (first record Mar 4, 2025) with no new permit activity recorded in 20 mo.
- New home (Issued)0.13 mi NW
Active in "Issued" for 22 mo (first record Jan 14, 2025) with no new permit activity recorded in 22 mo.
- New home (Issued)0.14 mi N
Active in "Issued" for 2 yr (first record Oct 28, 2024) with no new permit activity recorded in 2 yr.
Permit & Project History on This Parcel (0 permits, 1 grouped projects)
No building permits recorded on this parcel in our dataset.
State HCD Housing Element APR records on this parcel: 1 entry (report years 2025).