1027 Erica Rd
Mill Valley 94941 · Tamalpais · Unincorporated Marin · Coordinates: 37.88685, -122.54638
Executive Verdict · Public-Records Synthesis
Zoned RSP-2 in Unincorporated Marin with likely ADU & SB 9 infill eligibility and mapped CAL FIRE high fire hazard severity zone (state responsibility area) due diligence; benchmark value $2,117,000 ($1,863,000–$2,371,000).
Upsides & Opportunities
- ✓ ADU & SB 9 infill pathways screen as likely eligible
Zoned RSP-2 supports ministerial ADU/JADU review plus SB 9 both two-unit development and ministerial urban lot split on a 7,884 sq ft lot. Local precedent is active with 5 ADU permits within ¼ mile over the last 36 months.
Source: Unincorporated Marin zoning · CA Gov. Code 66314 & 65852.21
- ✓ Documented permitted upgrades (+$3,795 contributory est.)
Public building records show issued construction/renovation work on this parcel (9 total permits, latest Mar 29, 2024).
Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) (parcel APN)
- ✓ Above-average reinvestment in Tamalpais
50 substantial renovation & housing permits over 24 months (20.5 per 1,000 parcels vs. 16.4 citywide baseline) (#3 of 22 neighborhoods).
Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) (Tamalpais)
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 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
Other (167685): Issued after 2 mo — above the 75th percentile for other permits in Unincorporated Marin (median 0d, 75th pct 1d, n=1,560).
Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) (review-time benchmark)
- ! 5 slow or stalled nearby projects within ½ mile
Closest lead: New home at 560 Alta Way (0.33 mi E, 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:
- 7,884 sq ft (0.18 ac)
- Assessor use:
- Single-Resid. - Improved
- Addresses on lot:
- 1027 ERICA RD
Zoning & Land Use
RSP-2 — Residential Single Family Planned (Unincorporated Marin)
State Housing Pathways Screen (ADU & SB 9)
- ADU or junior ADULikely eligible
Zoned RSP-2 (single-family residential): state law allows ADUs where homes are allowed.
- SB 9: two homes on the lotLikely eligible
Zoned RSP-2, a single-family residential zone.
- SB 9: split into two lotsLikely eligible
Zoned RSP-2, a single-family residential zone. The lot is 7,884 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
- 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 06041C0468F, 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: $1,863,000 – $2,371,000 · Status: Off market
HUD Small Area FMR (ZIP 94941) · FY 2026
Studio $2,730 · 1BR $3,270 · 2BR $3,960 · 3BR $5,060 · 4BR $5,240
Developments Deserving Closer Investigation & Active Area Builders
- New home at 560 Alta Way (Applied)0.33 mi E
In "Applied" for 3.3 yr (since Aug 10, 2023), 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, $975,000 declared valuation across 1 permit).
- New home at 510 Browning Ct (Issued)0.42 mi SE
Active in "Issued" for 10.2 yr (first record Aug 15, 2016) with no new permit activity recorded in 9.9 yr. High-impact scale (1 housing unit, $900,000 declared valuation across 1 permit).
- New home (Entitled)0.11 mi W
In "Entitled" for 4.8 yr (since Jan 19, 2022), exceeding the 253d median and 686d 90th percentile for new single-family home permits in Unincorporated Marin (n=121).
- New home (Entitled)0.12 mi NE
In "Entitled" for 5.6 yr (since Apr 5, 2021), exceeding the 253d median and 686d 90th percentile for new single-family home permits in Unincorporated Marin (n=121).
Entity-resolved builders & contractors in ½ mile: Maap (3 on parcel, 3 in ½ mi · Windows / doors / siding); Rebath By Schicker (1 on parcel, 1 in ½ mi · Other); Rps Remodeling (1 on parcel, 1 in ½ mi · Windows / doors / siding); Thd At Home Services Home Depot (1 on parcel, 1 in ½ mi · Windows / doors / siding); Jiopbjk (1 on parcel, 1 in ½ mi · HVAC / heat pump).
Permit & Project History on This Parcel (9 permits, 0 grouped projects)
| Record # | Category | Status | Applied / Issued | Valuation | Description |
|---|---|---|---|---|---|
| 176300 | Remodel / interior alteration | Issued | Iss. Mar 29, 2024 | $7,500 | Bathroom Remode1 |
| B27493 | Windows / doors / siding | Issued | Iss. Oct 21, 2021 | $28,500 | Install James Hardie fiber cement siding to all exterior walls of home. — Siding Replacement |
| 167685 | Other | Issued | Iss. Apr 5, 2021 | $52,700 | (23 Bathroom Remodel |
| B24652 | Windows / doors / siding | Issued | Iss. Jan 20, 2021 | $11,152 | Replace 4 non-opening windows in-kind - WUI glass — Non-structural Door/Window Replacement |
| B23580 | Windows / doors / siding | Issued | Iss. Sep 16, 2020 |