Fairfax 94930 · Unincorporated Fairfax · APN 197-041-17 · Unincorporated Marin
Zoned R1 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 $1,846,000 ($1,624,000–$2,068,000).
Zoned R1 supports ministerial ADU/JADU review plus SB 9 both two-unit development and ministerial urban lot split on a 15,769 sq ft lot. Local precedent is active with 1 ADU permit within ¼ mile over the last 36 months.
Source: Unincorporated Marin zoning · CA Gov. Code 66314 & 65852.21
Public building records show issued construction/renovation work on this parcel (6 total permits, latest May 5, 2026).
Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) (parcel APN)
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)
Automated synthesis of indexed municipal, county, state, and federal public records — informational context only, not a formal appraisal, survey, or legal/tax determination.
Since November 2024 within ½ mile: 1 permitted; 1 demolition.
2 projects with a record in this window, grouped by us from permits and State housing reports. Units are as proposed on each project's latest record and counted at its current stage.
33 permits within ½ mile since November 2024
$1,846,000
Benchmark range: $1,624,000 – $2,068,000
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)
Accessory dwelling unit (new or conversion) (181594): Issued after 21 mo (3.2× the 204d median) — slower than 90% of accessory dwelling unit (new or conversion) permits in Unincorporated Marin (median 204d, 90th pct 549d, n=298).
Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) (review-time benchmark)
Closest lead: Demolition at 2 Mora Ave (0.13 mi NW, 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)
The map shows new construction, ADUs, demolitions, additions, and renovations. Routine systems work (roofs, HVAC, water heaters) is counted but not mapped. Unit counts are as stated on permits.
Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) · Geography: permits located by parcel, ½ mile radius · Retrieved Nov 13, 2026
Public-records benchmark estimate combining Zillow Home Value Index (Data provided by Zillow), Census ACS 5-year estimates, parcel land-use/lot characteristics, and issued building permits. Not an official appraisal.
Permit counts, by the date issued (or applied, if not yet issued). Lot splits are planning cases, which we don't have.
We read public zoning and hazard maps against state law (ADUs: Gov. Code 66314; SB 9: Gov. Code 65852.21 and 66411.7). Local rules, title, tenancy history and site conditions can change the answer. Check with Unincorporated Marin's planning department before relying on it.
Sources: County of Marin GIS (MarinMap), Zoning (11 cities and unincorporated Marin) (retrieved Nov 13, 2026) · CAL FIRE Office of the State Fire Marshal, Fire Hazard Severity Zones in the State Responsibility Area (effective 2024-04-01) (retrieved Nov 9, 2026) · CAL FIRE Office of the State Fire Marshal, Fire Hazard Severity Zones in the Local Responsibility Area (map dated 2025-03-24) (retrieved Nov 9, 2026) · FEMA, National Flood Hazard Layer — flood hazard zones (retrieved Nov 9, 2026) · FEMA, National Flood Hazard Layer — FIRM panels (retrieved Nov 9, 2026) · California Geological Survey, Alquist-Priolo Earthquake Fault Zones (retrieved Nov 9, 2026) · Zoning classes: our classification of R1 as single-family residential, checked against the zone description on Oct 24, 2026
Chronological history of building permit applications and issuances, snapshot-dated status changes, State housing entitlements, surrounding development within ½ mile, and area home-value trends.
Permit issued and active for 2.3 yr (first record Jul 31, 2024), with no completion or new permit record in 6 mo. · 1 unit · $560,000 declared valuation
Permit issued and active for 6.3 yr (first record Jul 16, 2020), with no completion or new permit record in 6.3 yr. · 1 unit
Permit issued and active for 4.5 yr (first record Apr 26, 2022), with no completion or new permit record in 4.5 yr. · $6,000 declared valuation
Permit issued and active for 2.6 yr (first record Apr 12, 2024), with no completion or new permit record in 2.6 yr. · 1 unit · $1 declared valuation
Nearby other (29 Bosque Ave): First appeared in published agency feed
Record B48897 · Detected between snapshots
Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) · Snapshot diff within ½ mile
Latest published Zillow Home Value Index (ZHVI) update
Changed from $1,169,780 in September 2025 to $1,233,096 in September 2026.
Source: Zillow Home Value Index (ZHVI) · Data provided by Zillow · Geography: ZIP 94930 (not a parcel appraisal)
0 Meadow Club Rd · $4,700 valuation
Records span Jun 15, 2026 to Jul 28, 2026 (2 permits).
Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) & HCD APR (grouped project within ½ mile)
Addition (adds square footage) permit issued (181593)
Recorded status: Issued
Addition: Office @ Lower Lvl & Closet @ Upper Lvl; Decks; Outdoor Kitchen · Declared valuation: $300,000 · Contractor: Morgan Key Hammon Construction
Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) · Geography: parcel
Accessory dwelling unit (new or conversion) permit issued (181594)
Recorded status: Issued
New Det A D U; Decks; Ret Walls; Spa · Declared valuation: $560,000 · 1 housing unit · Contractor: Morgan Key Hammon Construction
Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) · Geography: parcel
Annual ZIP 94930 home-value index checkpoint
Changed from $1,215,573 in September 2024 to $1,169,780 in September 2025.
Source: Zillow Home Value Index (ZHVI) · Data provided by Zillow · Geography: ZIP 94930 (not a parcel appraisal)
Annual ZIP 94930 home-value index checkpoint
Changed from $1,214,660 in September 2023 to $1,215,573 in September 2024.
Source: Zillow Home Value Index (ZHVI) · Data provided by Zillow · Geography: ZIP 94930 (not a parcel appraisal)
Accessory dwelling unit (new or conversion) permit application filed (181594)
Current status: Issued
New Det A D U; Decks; Ret Walls; Spa · Declared valuation: $560,000 · Contractor: Morgan Key Hammon Construction
Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) · Geography: parcel
Addition (adds square footage) permit application filed (181593)
Current status: Issued
Addition: Office @ Lower Lvl & Closet @ Upper Lvl; Decks; Outdoor Kitchen · Declared valuation: $300,000 · Contractor: Morgan Key Hammon Construction
Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) · Geography: parcel
740 Bolinas Rd · 1 unit · $1 valuation
Records span Apr 12, 2024 to Apr 22, 2024 (1 permit).
Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) & HCD APR (grouped project within ½ mile)
Annual ZIP 94930 home-value index checkpoint
Changed from $1,278,920 in September 2022 to $1,214,660 in September 2023.
Source: Zillow Home Value Index (ZHVI) · Data provided by Zillow · Geography: ZIP 94930 (not a parcel appraisal)
Annual ZIP 94930 home-value index checkpoint
Changed from $1,178,018 in September 2021 to $1,278,920 in September 2022.
Source: Zillow Home Value Index (ZHVI) · Data provided by Zillow · Geography: ZIP 94930 (not a parcel appraisal)
HVAC / heat pump permit application filed (B30325)
Current status: Issued
INSTALL NEW 3.5 TON 18 SEER 2 HEAD MINI SPLIT SYSTEM ON LEFT SIDE YARD. — Mechanical Appliance · Declared valuation: $18,000 · Contractor: Moore Home Services
Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) · Geography: parcel
HVAC / heat pump permit issued (B30325)
Recorded status: Issued
INSTALL NEW 3.5 TON 18 SEER 2 HEAD MINI SPLIT SYSTEM ON LEFT SIDE YARD. — Mechanical Appliance · Declared valuation: $18,000 · Contractor: Moore Home Services
Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) · Geography: parcel
2 Mora Ave · $6,000 valuation
Records span Apr 26, 2022 to May 16, 2022 (1 permit).
Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) & HCD APR (grouped project within ½ mile)
Cross-referenced intelligence from our historical development graph—connecting parcels, permits, entity-resolved builders, empirical review-time distributions, and neighborhood renovation trends.
Explore full Unincorporated Marin development graph →Issued after 21 mo (3.2× the 204d median) — slower than 90% of accessory dwelling unit (new or conversion) permits in Unincorporated Marin (median 204d, 90th pct 549d, n=298).
Issued after 22 mo (4.1× the 160d median) — slower than 90% of addition (adds square footage) permits in Unincorporated Marin (median 160d, 90th pct 440d, n=316).
Active in "Issued" for 2.3 yr (first record Jul 31, 2024) with no new permit activity recorded in 6 mo.
Active in "Issued" for 4.5 yr (first record Apr 26, 2022) with no new permit activity recorded in 4.5 yr.
Active in "Issued" for 2.6 yr (first record Apr 12, 2024) with no new permit activity recorded in 2.6 yr.
Active in "Issued" for 6.3 yr (first record Jul 16, 2020) with no new permit activity recorded in 6.3 yr.
Substantial improvements (additions, interior remodels, ADUs, commercial TI, and new builds) across 470 parcels
Small prior baseline
City baseline: 16.4 / 1k
6 in trailing 24m
Includes 1 ADUs
| Builder / contractor | Primary specialty | Here / ½ mi | ½ mi valuation | Citywide 24m trend |
|---|---|---|---|---|
| Morgan Key Hammon Construction | Accessory dwelling unit (new or conversion) | 2 on parcel2 in ½ mi | $860,000 | 0 vs 0 prior |
| Simply Solar | Solar / battery storage | 1 on parcel1 in ½ mi | $27,850 | 0 vs 0 prior |
| Moore Home Services | HVAC / heat pump | 1 on parcel1 in ½ mi | $18,000 |
| Permit category | Sample (n) | 25th pct | Median (50th) | 75th pct | 90th pct | Recent 24m median |
|---|---|---|---|---|---|---|
| New single-family home | 121 | 166d | 253d | 456d | 686d | 211d(vs 273d prior) |
| New multifamily / condos / mixed-use | 21 | 272d | 292d | 293d | 313d | 293d(vs 197d prior) |
| Accessory dwelling unit (new or conversion)On this parcel | 298 | 120d | 204d | 331d | 549d | 214d(vs 181d prior) |
HUD Small Area Fair Market Rent · ZIP 94930
HUD FY 2026 · 40th-percentile gross rentCensus ACS 5-year median gross rent (all bedroom counts combined):
Area home-value benchmarks (not an appraisal)
ZIP & neighborhood mediansUnder California Proposition 13, the seller's historical assessed value does not carry over to a buyer. On sale, the parcel is reassessed at the purchase price: 1.00% base rate ($18,450/yr) + local voter-approved bond debt ($2,768/yr) + fixed direct levies/Mello-Roos ($450/yr).
Mapped hazard zone insurance context on this parcel:
Model adding a backyard ADU or garage conversion under California's Prop 13 blended new-construction assessment (existing house & land tax base stays intact; only ADU build cost is assessed) and SB 13 impact-fee rules.
−$106,733/yr
Cash needed: $405,900
NOI: $5,219/yr
P&I: $9,329/mo
For $0/mo net cash flow
At $3,250/mo gross rent
| Scenario | Assumptions | Year 1 Rent | Year 1 Cash Flow | Cash-on-Cash | Break-Even Rent | Year 5 Cash Flow |
|---|---|---|---|---|---|---|
| Conservative | −8% starting rent, +3% vacancy, +3% combined maintenance/CapEx, 1.5%/yr rent growth | $2,990/mo | −$9,268/mo | -27.4% | $15,927/mo | −$9,311/mo |
| Base (your inputs) | Your entered assumptions, 3.0%/yr rent growth | $3,250/mo | −$8,894/mo | -26.3% | $14,742/mo | −$8,753/mo |
| Optimistic (cap-limited) | +6% starting rent, 3% vacancy, 4.5%/yr rent growth (capped by AB 1482 ceiling of 8.6%/yr) | $3,445/mo | −$8,680/mo | -25.7% | $14,399/mo | −$8,329/mo |
Rental regulatory context (informational only — not legal advice):
California AB 1482 (Tenant Protection Act, Civ. Code § 1947.12) caps annual rent increases at 5% + local CPI (max 10%) on covered properties.
Issued1 unitsJul 31, 2024 – May 5, 2026
We group related permits and State housing reports into projects. That grouping is our inference, not an official record.
New Det A D U; Decks; Ret Walls; Spa
Addition: Office @ Lower Lvl & Closet @ Upper Lvl; Decks; Outdoor Kitchen
INSTALL NEW 3.5 TON 18 SEER 2 HEAD MINI SPLIT SYSTEM ON LEFT SIDE YARD. — Mechanical Appliance
Change Out of a 3 ton Split System, like for like, same location. — Replace Mechanical Appliance
Battery Backup For Solar
6.20 Kw Roof-Top Pv - Express
Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) · Geography: parcel (APN) · Retrieved Nov 13, 2026 · Received and issued dates come from the County of Marin. The county publishes no final or expired status, so an issued permit stays 'Issued' after the work is done.
No housing activity reported to the State for this parcel (2018–2025 reports).
Source: California HCD, Housing Element Annual Progress Report — Table A2 · Geography: project (parcel) · Retrieved Nov 9, 2026 · From Unincorporated Marin's Housing Element Annual Progress Reports. A project can appear in several report years as it moves from entitlement to permit to completion.
Source: County of Marin GIS (MarinMap), Zoning (11 cities and unincorporated Marin) · Geography: zoning district polygon at parcel point · Retrieved Nov 13, 2026
0.36 acres
Assessor's classification for assessment purposes. This is not zoning.
45A BOSQUE AVE; 45 BOSQUE AVE
Source: County of Marin GIS (MarinMap), Parcels · Geography: parcel · Retrieved Nov 13, 2026
Search by parcel number 197-041-17. Assessed value is not market value.
Search by parcel number 197-041-17 (Marin County Tax Collector)
Permits issued in unincorporated Marin in the past 48 months. Each city keeps its own records.
The official flood hazard map for this location. Our reading of it is under What could be built here.
This site does not show owner names.
| Tesla Energy | Solar / battery storage | 1 on parcel1 in ½ mi | $14,000 | 0 vs 0 prior |
| Moore Services | HVAC / heat pump | 1 on parcel1 in ½ mi | $9,500 | 0 vs 0 prior |
| Owner Builder Recent nearby: 77 Bosque Ave (Aug 4, 2026) | Remodel / interior alteration | 7 in ½ mi | $500,700 | 226 vs 240 prior−6% |
| Owner Recent nearby: 57 Bosque Ave (Oct 20, 2016) | Addition (adds square footage) | 2 in ½ mi | $725,000 | 25 vs 15 prior+67% |
| Nordby Construction Recent nearby: 1001 Bolinas Rd (Nov 29, 2023) | Commercial tenant improvement | 1 in ½ mi | $2,000,000 | 0 vs 1 prior |
| Building Alchemy Recent nearby: 945 Bolinas Rd (Aug 1, 2019) | Remodel / interior alteration | 1 in ½ mi | $150,000 | 0 vs 0 prior |
| Addition (adds square footage)On this parcel | 316 | 103d | 160d | 249d | 440d | 157d(vs 167d prior) |
| Remodel / interior alteration | 1,054 | 36d | 83d | 148d | 266d | 112d(vs 77d prior) |
| Commercial tenant improvement | 81 | 99d | 148d | 233d | 443d | 152d(vs 150d prior) |
| Solar / battery storageOn this parcel | 2,977 | 0d | 0d | 0d | 2d | 0d |
| HVAC / heat pumpOn this parcel | 2,946 | 0d | 0d | 0d | 0d | 0d |
Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) · Computed from issued permits with recorded application and issuance dates over the trailing 60 months. Categories with fewer than 20 permits are excluded.