3333 Paradise Dr
Tiburon 94920 · Unincorporated Tiburon · Unincorporated Marin · Coordinates: 37.89190, -122.45245
Executive Verdict · Public-Records Synthesis
Zoned R1-B4 in Unincorporated Marin with likely ADU & SB 9 infill eligibility and mapped CAL FIRE moderate fire hazard severity zone (state responsibility area) due diligence; benchmark value $3,421,000 ($3,010,000–$3,832,000).
Upsides & Opportunities
- ✓ ADU & SB 9 infill pathways screen as likely eligible
Zoned R1-B4 supports ministerial ADU/JADU review plus SB 9 both two-unit development and ministerial urban lot split on a 41,164 sq ft lot.
Source: Unincorporated Marin zoning · CA Gov. Code 66314 & 65852.21
- ✓ Documented permitted upgrades (+$96,800 contributory est.)
Public building records show issued construction/renovation work on this parcel (3 total permits, latest Jun 29, 2023).
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)
- ! 4 slow or stalled nearby projects within ½ mile
Closest lead: Accessory dwelling unit at 21 Teaberry Ln (300 ft S, 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)
- ! Year 1 Prop 13 tax reset (~$39,792/yr at $3,421,000)
Sale triggers reassessment to 1.00% base + ~0.15% voter debt (~$3,316/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:
- 41,164 sq ft (0.94 ac)
- Assessor use:
- Single-Resid. - Improved
- Addresses on lot:
- 3333 PARADISE DR
Zoning & Land Use
R1-B4 — Residential Single Family (Unincorporated Marin)
State Housing Pathways Screen (ADU & SB 9)
- ADU or junior ADULikely eligible
Zoned R1-B4 (single-family residential): state law allows ADUs where homes are allowed.
- SB 9: two homes on the lotLikely eligible
Zoned R1-B4, a single-family residential zone.
- SB 9: split into two lotsLikely eligible
Zoned R1-B4, a single-family residential zone. The lot is 41,164 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 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: $3,010,000 – $3,832,000 · 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
Developments Deserving Closer Investigation & Active Area Builders
- Accessory dwelling unit at 21 Teaberry Ln (Applied)300 ft S
In "Applied" for 4.5 yr (since May 5, 2022), exceeding the 253d median and 686d 90th percentile for new single-family home permits in Unincorporated Marin (n=121).
- New home (Issued)340 ft SE
Active in "Issued" for 6.7 yr (first record Feb 20, 2020) with no new permit activity recorded in 6.7 yr.
- New home (Issued)0.38 mi SW
Active in "Issued" for 2 yr (first record Nov 21, 2024) with no new permit activity recorded in 2 yr.
- New home (Issued)0.41 mi SW
Active in "Issued" for 3.6 yr (first record Apr 24, 2023) with no new permit activity recorded in 3.6 yr.
Entity-resolved builders & contractors in ½ mile: Simple Living (1 on parcel, 1 in ½ mi · Remodel / interior alteration); Sustainable Living Builders (1 on parcel, 1 in ½ mi · Roof replacement); Schalich Brothers Construction (3 in ½ mi · Remodel / interior alteration); Owner (2 in ½ mi · Addition (adds square footage)); G Family (2 in ½ mi · Remodel / interior alteration).
Permit & Project History on This Parcel (3 permits, 0 grouped projects)
| Record # | Category | Status | Applied / Issued | Valuation | Description |
|---|---|---|---|---|---|
| 174388 | Remodel / interior alteration | Issued | Iss. Jun 29, 2023 | $200,000 | Convert 2nd Unit To Master Suite & Bedrm;& Add Staircase To Attach To Main Level |
| B31548 | Roof replacement | Issued | Iss. Oct 26, 2022 | $33,832 | Removal of existing roof material, installing Polyglass poly flex G flat roof system on single family dwelling, 35.33 sq… |
| 170780 | General repair | Issued | Iss. Mar 2, 2022 | $21,500 | Repair/Replace Parking Deck & Driveway T.D. 2/10/22 |