125 Iolanthus Ave
Novato 94945 · Black Point · Unincorporated Marin · Coordinates: 38.10645, -122.49719
Executive Verdict · Public-Records Synthesis
Zoned A2 in Unincorporated Marin and mapped FEMA AE flood / CAL FIRE high fire hazard severity zone (state responsibility area) due diligence; benchmark value $1,245,000 ($1,096,000–$1,394,000).
Upsides & Opportunities
- ✓ 3 documented municipal building permits on file
On-parcel permit history is indexed through Aug 19, 2026, letting you verify roof, HVAC, electrical, or structural work against seller disclosures.
Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) (parcel APN)
Watchouts & Due Diligence
- ! FEMA Special Flood Hazard Area (AE, about 8% 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)
- ! CAL FIRE High 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)
- ! 6 slow or stalled nearby projects within ½ mile
Closest lead: Accessory dwelling unit at 315 Laurel Ave (410 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 (~$14,768/yr at $1,245,000)
Sale triggers reassessment to 1.00% base + ~0.15% voter debt (~$1,231/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:
- 8,973 sq ft (0.21 ac)
- Assessor use:
- Single-Resid. - Improved
- Addresses on lot:
- 125 IOLANTHUS AVE
Zoning & Land Use
A2 — Agriculture Limited (Unincorporated Marin)
Undesignated — Undesignated (Novato)
State Housing Pathways Screen (ADU & SB 9)
- ADU or junior ADUCan't tell
Zoned A2 (agricultural): ADUs are allowed if the zone allows a home, which depends on the zone's rules. The parcel point also falls in Undesignated.
- SB 9: two homes on the lotUnlikely
Zoned A2 (agricultural), not a single-family residential zone. The parcel point also falls in Undesignated.
- SB 9: split into two lotsUnlikely
Zoned A2 (agricultural), not a single-family residential zone. The parcel point also falls in Undesignated.
Mapped Hazard Zones on This Lot
- CAL FIRE Fire Hazard Severity Zone
- High Fire Hazard Severity Zone (State Responsibility Area) (all of the lot, map Apr 1, 2024)
- FEMA National Flood Hazard Layer
- Zone AE: 1% annual chance flood (Special Flood Hazard Area) (about 8% of the lot); Zone X: minimal flood hazard (about 92% of the lot) · FIRM panel 06041C0301E, 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: $1,096,000 – $1,394,000 · Status: Off market
HUD Small Area FMR (ZIP 94945) · FY 2026
Studio $2,050 · 1BR $2,510 · 2BR $2,990 · 3BR $3,770 · 4BR $3,960
Developments Deserving Closer Investigation & Active Area Builders
- Accessory dwelling unit at 315 Laurel Ave (Applied)410 ft S
In "Applied" for 2.8 yr (since Feb 7, 2024), exceeding the 253d median and 686d 90th percentile for new single-family home permits in Unincorporated Marin (n=121).
- Accessory dwelling unit at 363 Grandview Ave (Applied)0.27 mi SW
In "Applied" for 2.5 yr (since Apr 26, 2024), exceeding the 253d median and 686d 90th percentile for new single-family home permits in Unincorporated Marin (n=121).
- New home at 5 Bay Canyon Rd (Applied)0.38 mi W
In "Applied" for 2.3 yr (since Jul 30, 2024), exceeding the 253d median and 686d 90th percentile for new single-family home permits in Unincorporated Marin (n=121).
- New home at 342 Laurel Ave (Issued)0.15 mi S
Active in "Issued" for 8.2 yr (first record Sep 18, 2018) with no new permit activity recorded in 7.1 yr.
Entity-resolved builders & contractors in ½ mile: Jemico (1 on parcel, 1 in ½ mi · Windows / doors / siding); Ground Up Construction Development (1 on parcel, 1 in ½ mi · Roof replacement); Americas Vinyl Exteriors (1 on parcel, 1 in ½ mi · Other); Owner Builder (6 in ½ mi · New garage / accessory structure); Owner (4 in ½ mi · Remodel / interior alteration).
Permit & Project History on This Parcel (3 permits, 0 grouped projects)
| Record # | Category | Status | Applied / Issued | Valuation | Description |
|---|---|---|---|---|---|
| B47968 | Other | Issued | Iss. Aug 19, 2026 | $4,026 | — |
| B32874 | Roof replacement | Issued | Iss. Mar 19, 2023 | $6,500 | remove and replace approx. 2000 sq ft of Roofing material comp on and comp off no plywood to be replaced — ReRoofing; Wi… |
| B30839 | Windows / doors / siding | Issued | Iss. Aug 24, 2022 | $10,868 | Replacing 1 patio door, retrofit. — Non-structural Door/Window Replacement |