Bolinas 94924 · Bolinas · APN 190-042-40 · Unincorporated Marin
Zoned C-RA-B2 in Unincorporated Marin with likely ministerial ADU eligibility and mapped CAL FIRE high fire hazard severity zone (state responsibility area) due diligence; benchmark value $2,193,000 ($1,930,000–$2,456,000).
Zone C-RA-B2 allows residential use qualifying for ministerial ADU review under state law.
Source: Unincorporated Marin zoning · CA Gov. Code 66314
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)
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)
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: 5 permitted, 2 proposed or in review; 1 commercial or mixed-use project.
8 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.
39 permits within ½ mile since November 2024
$2,193,000
Benchmark range: $1,930,000 – $2,456,000
Closest lead: Accessory dwelling unit at 387 Ocean Pkwy A K A (0.23 mi S, 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)
Sale triggers reassessment to 1.00% base + ~0.15% voter debt (~$2,139/mo). Confirm exact Mello-Roos / CFD special assessments on the county tax bill.
Source: CA Const. Art. XIIIA (Prop 13) · County Tax Collector
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 14, 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.
No ADU or new-home permits recorded within ¼ mile in this window.
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 14, 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 C-RA-B2 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 9.5 yr (first record May 24, 2017), with no completion or new permit record in 9.5 yr. · $100 declared valuation
Permit issued and active for 9.7 yr (first record Mar 9, 2017), with no completion or new permit record in 7.8 yr. · 1 unit · $76,000 declared valuation
Permit issued and active for 8.1 yr (first record Oct 16, 2018), with no completion or new permit record in 6.6 yr. · 1 unit · $18,000 declared valuation
Permit issued and active for 2.3 yr (first record Jul 17, 2024), with no completion or new permit record in 21 mo. · 1 unit · $64,500 declared valuation
Permit issued and active for 3.1 yr (first record Sep 21, 2023), with no completion or new permit record in 19 mo. · 1 unit · $725,000 declared valuation
Permit issued and active for 2.2 yr (first record Sep 17, 2024), with no completion or new permit record in 19 mo. · 1 unit · $150,000 declared valuation
Nearby accessory dwelling unit (new or conversion) (460 Fern Rd): No longer present in latest agency feed
Record 93841 · Detected between snapshots
Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) · Snapshot diff within ½ mile
Nearby other (460 Fern Rd): No longer present in latest agency feed
Record 94065 · Detected between snapshots
Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) · Snapshot diff within ½ mile
Nearby other (460 Fern Rd (A D U 460 A)): First appeared in published agency feed
Record 182819 · Detected between snapshots
Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) · Snapshot diff within ½ mile
Nearby other (460 Fern Rd): First appeared in published agency feed
Record 182820 · Detected between snapshots
Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) · Snapshot diff within ½ mile
225 Hawthorne Rd · $10,000 valuation
Records span Dec 11, 2025 to Oct 19, 2026 (1 permit).
Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) & HCD APR (grouped project within ½ mile)
Latest published Zillow Home Value Index (ZHVI) update
Changed from $1,796,016 in September 2025 to $1,954,560 in September 2026.
Source: Zillow Home Value Index (ZHVI) · Data provided by Zillow · Geography: ZIP 94924 (not a parcel appraisal)
185 Kale Rd · 1 unit · $200,000 valuation
Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) & HCD APR (grouped project within ½ mile)
123 Jute Rd · 1 unit · $684,617 valuation
Records span Sep 24, 2025 to Mar 9, 2026 (1 permit).
Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) & HCD APR (grouped project within ½ mile)
185 Iris Rd (Adu 150 Juniper Rd) · 1 unit · $119,520 valuation
Records span May 23, 2024 to Oct 31, 2025 (1 permit).
Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) & HCD APR (grouped project within ½ mile)
Annual ZIP 94924 home-value index checkpoint
Changed from $2,016,418 in September 2024 to $1,796,016 in September 2025.
Source: Zillow Home Value Index (ZHVI) · Data provided by Zillow · Geography: ZIP 94924 (not a parcel appraisal)
460 Fern Rd · 1 unit · $50,000 valuation
Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) & HCD APR (grouped project within ½ mile)
105 Kale Rd · 1 unit · $725,000 valuation
Records span Sep 21, 2023 to Apr 14, 2025 (1 permit).
Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) & HCD APR (grouped project within ½ mile)
105 Kale Rd (Adu 105a) · 1 unit · $150,000 valuation
Records span Sep 17, 2024 to Apr 14, 2025 (1 permit).
Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) & HCD APR (grouped project within ½ mile)
230 Ocean Pkwy · 1 unit · $64,500 valuation
Records span Jul 17, 2024 to Feb 6, 2025 (1 permit).
Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) & HCD APR (grouped project within ½ mile)
Annual ZIP 94924 home-value index checkpoint
Changed from $2,068,626 in September 2023 to $2,016,418 in September 2024.
Source: Zillow Home Value Index (ZHVI) · Data provided by Zillow · Geography: ZIP 94924 (not a parcel appraisal)
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 →Active in "Issued" for 8.1 yr (first record Oct 16, 2018) with no new permit activity recorded in 6.6 yr.
Active in "Issued" for 9.7 yr (first record Mar 9, 2017) with no new permit activity recorded in 7.8 yr.
Active in "Issued" for 9.5 yr (first record May 24, 2017) with no new permit activity recorded in 9.5 yr.
Active in "Issued" for 2.5 yr (first record May 23, 2024) with no new permit activity recorded in 12 mo.
Active in "Issued" for 2.2 yr (first record Sep 17, 2024) with no new permit activity recorded in 19 mo.
Active in "Issued" for 3.1 yr (first record Sep 21, 2023) with no new permit activity recorded in 19 mo.
Substantial improvements (additions, interior remodels, ADUs, commercial TI, and new builds) across 1,184 parcels
Small prior baseline
City baseline: 16.3 / 1k
12 in trailing 24m
Includes 6 ADUs
| Builder / contractor | Primary specialty | Here / ½ mi | ½ mi valuation | Citywide 24m trend |
|---|---|---|---|---|
| Owner Builder Recent nearby: 225 Hawthorne Rd (Oct 19, 2026) | New garage / accessory structure | 11 in ½ mi | $2,028,100 | 226 vs 240 prior−6% |
| Upscale Construction Recent nearby: 160 Iris Rd (May 20, 2021) | Demolition | 3 in ½ mi | $2,009,100 | 1 vs 0 prior |
| Owner Recent nearby: 334 Jute Rd (Dec 19, 2017) |
| Permit category | Sample (n) | 25th pct | Median (50th) | 75th pct | 90th pct | Recent 24m median |
|---|---|---|---|---|---|---|
| New single-family home | 121 | 166d | 253d | 456d | 686d | 210d(vs 276d prior) |
| New multifamily / condos / mixed-use | 21 | 272d | 292d | 293d | 313d | 293d(vs 197d prior) |
| Accessory dwelling unit (new or conversion) | 298 | 120d | 204d | 331d | 549d | 214d(vs 181d prior) |
| Addition (adds square footage) |
HUD Small Area Fair Market Rent · ZIP 94924
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 ($21,950/yr) + local voter-approved bond debt ($3,293/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.
−$134,318/yr
Cash needed: $482,900
NOI: -$1,128/yr
P&I: $11,099/mo
For $0/mo net cash flow
At $3,000/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 | $2,760/mo | −$11,538/mo | -28.7% | $18,865/mo | −$11,619/mo |
| Base (your inputs) | Your entered assumptions, 3.0%/yr rent growth | $3,000/mo | −$11,193/mo | -27.8% | $17,461/mo | −$11,104/mo |
| Optimistic (cap-limited) | +6% starting rent, 3% vacancy, 4.5%/yr rent growth (capped by AB 1482 ceiling of 8.6%/yr) | $3,180/mo | −$10,995/mo | -27.3% | $17,056/mo | −$10,712/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.
No building permits are recorded for this parcel since 2016.
Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) · Geography: parcel (APN) · Retrieved Nov 14, 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 14, 2026
0.70 acres
Assessor's classification for assessment purposes. This is not zoning.
450 WALNUT RD
Source: County of Marin GIS (MarinMap), Parcels · Geography: parcel · Retrieved Nov 14, 2026
Search by parcel number 190-042-40. Assessed value is not market value.
Search by parcel number 190-042-40 (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.
| Addition (adds square footage) |
| 3 in ½ mi |
| $704,263 |
| 25 vs 15 prior+67% |
| Nemec Construction Recent nearby: 182 Hawthorne Rd (Oct 7, 2019) | New garage / accessory structure | 2 in ½ mi | $230,000 | 0 vs 0 prior |
| Vida Building Recent nearby: 230 Ocean Pkwy (Feb 6, 2025) | New garage / accessory structure | 2 in ½ mi | $215,000 | 3 vs 2 prior |
| Peacock Roger S Jr Recent nearby: 210 Laurel Rd (Sep 9, 2015) | Addition (adds square footage) | 2 in ½ mi | $140,000 | 0 vs 0 prior |
| Cohan Structures Recent nearby: 123 Jute Rd (Mar 9, 2026) | New single-family home | 1 in ½ mi | $684,617 | 6 vs 0 prior |
| Creative Contractg Of CA Kasten Builders Recent nearby: 35 Queen Rd (Sep 3, 2020) | New garage / accessory structure | 1 in ½ mi | $375,000 | 0 vs 0 prior |
| 316 |
| 103d |
| 160d |
| 249d |
| 440d |
| 159d(vs 166d 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) |
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.