25 Callender Way
Inverness 94937 · Inverness · Unincorporated Marin · Coordinates: 38.10077, -122.85878
Executive Verdict · Public-Records Synthesis
Zoned C-RSP-1 in Unincorporated Marin and mapped CAL FIRE very high fire hazard severity zone (state responsibility area) due diligence; benchmark value $1,751,000 ($1,541,000–$1,961,000).
Upsides & Opportunities
- ✓ Documented permitted upgrades (+$39,600 contributory est.)
Public building records show issued construction/renovation work on this parcel (3 total permits, latest Nov 7, 2019).
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 Very 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)
- ! Delayed or open permit activity on this parcel
New garage / accessory structure (79428): Pending in review for 9.9 yr (22.0× the 164d median) — slower than 90% of new garage / accessory structure permits in Unincorporated Marin (median 164d, 90th pct 485d, n=356).
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: New home at 60 Trossach Way (0.28 mi SW, 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:
- 15,725 sq ft (0.36 ac)
- Assessor use:
- Single-Resid. - Improved
- Addresses on lot:
- 25 CALLENDER WAY
Zoning & Land Use
C-RSP-1 — Residential Single Family Planned (Unincorporated Marin)
State Housing Pathways Screen (ADU & SB 9)
- ADU or junior ADUPossible, with conditions
Zoned C-RSP-1 (single-family residential): state law allows ADUs where homes are allowed. Very High Fire Hazard Severity Zone covers all of the lot: cities may limit ADUs here for fire safety and evacuation.
- SB 9: two homes on the lotPossible, with conditions
Zoned C-RSP-1, a single-family residential zone. Very High Fire Hazard Severity Zone (State responsibility area) covers all of the lot: SB 9 requires the project to meet the fire hazard mitigation standards.
- SB 9: split into two lotsPossible, with conditions
Zoned C-RSP-1, a single-family residential zone. The lot is 15,725 sq ft by the assessor, room for two lots of at least 1,200 sq ft, each at least 40% of the original. Very High Fire Hazard Severity Zone (State responsibility area) covers all of the lot: SB 9 requires the project to meet the fire hazard mitigation standards.
Mapped Hazard Zones on This Lot
- CAL FIRE Fire Hazard Severity Zone
- Very High 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 06041C0230E, effective August 15, 2017
- CGS Alquist-Priolo Earthquake Fault Zone
- Not in an Alquist-Priolo Earthquake Fault Zone
Surrounding Rent & Value Benchmarks (Public Records)
Range: $1,541,000 – $1,961,000 · Status: Off market
HUD Small Area FMR (ZIP 94937) · FY 2026
Studio $2,400 · 1BR $2,870 · 2BR $3,480 · 3BR $4,450 · 4BR $4,610
Nearby Activity (½ mile radius, since November 2024)
3 active or recent development projects (3 housing units across completed, permitted, and pipeline stages) and 101 total building permits recorded within ½ mile.
- New construction6 permits (2 units)
- Adds housing (ADU)1 permit (1 units)
- Additions & renovations5 permits
- Building systems71 permits
- Repairs2 permits
- Other16 permits
Developments Deserving Closer Investigation & Active Area Builders
- New home at 60 Trossach Way (Applied)0.28 mi SW
In "Applied" for 5.9 yr (since Dec 15, 2020), exceeding the 253d median and 686d 90th percentile for new single-family home permits in Unincorporated Marin (n=121). High-impact scale (1 housing unit, $1,400,000 declared valuation across 1 permit).
- New garage / accessory structure (79428) (Applied)On this parcel
Pending in review for 9.9 yr (22.0× the 164d median) — slower than 90% of new garage / accessory structure permits in Unincorporated Marin (median 164d, 90th pct 485d, n=356).
- Remodel / interior alteration (160471) (Issued)On this parcel
Issued after 8 mo (2.8× the 83d median) — above the 75th percentile for remodel / interior alteration permits in Unincorporated Marin (median 83d, 75th pct 148d, n=1,054).
- New home at 179 Keith Way (Issued)0.36 mi NW
Active in "Issued" for 17 mo (first record Jun 9, 2025) with no new permit activity recorded in 10 mo. High-impact scale (1 housing unit, $1,160,000 declared valuation across 1 permit).
Entity-resolved builders & contractors in ½ mile: Lino James Construction (2 on parcel, 2 in ½ mi · Electrical / panel); Stryker Builders (6 in ½ mi · New garage / accessory structure); Owner Builder (6 in ½ mi · Remodel / interior alteration); Oakwood Construction (2 in ½ mi · New garage / accessory structure); Design Build Alliance (2 in ½ mi · Addition (adds square footage)).
Permit & Project History on This Parcel (3 permits, 0 grouped projects)
| Record # | Category | Status | Applied / Issued | Valuation | Description |
|---|---|---|---|---|---|
| 163152 | Electrical / panel | Issued | Iss. Nov 7, 2019 | $1,500 | Replace Electrical Meter Main |
| 160471 | Remodel / interior alteration | Issued | Iss. Jan 7, 2019 | $100,000 | Addition, Rmdl, Minor Footing Repair, Struct Windows T.D. 7/6/18 |
| 79428 | New garage / accessory structure | Applied | App. Dec 27, 2016 | $500,000 | Rmdl; Addn; Storage Superceded By New Submission 3/22/18 T.D. 2/23/17 |