· Dillon Beach · APN 100-321-07 · Unincorporated Marin
Since October 2024 within ½ mile: 3 permitted, 3 proposed or in review.
6 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.
124 permits within ½ mile since October 2024
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.
$1,601,000
Benchmark range: $1,361,000 – $1,841,000
Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) · Geography: permits located by parcel, ½ mile radius · Retrieved Oct 28, 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 Oct 28, 2026) · CAL FIRE Office of the State Fire Marshal, Fire Hazard Severity Zones in the State Responsibility Area (effective 2024-04-01) (retrieved Oct 26, 2026) · CAL FIRE Office of the State Fire Marshal, Fire Hazard Severity Zones in the Local Responsibility Area (map dated 2025-03-24) (retrieved Oct 26, 2026) · FEMA, National Flood Hazard Layer — flood hazard zones (retrieved Oct 26, 2026) · FEMA, National Flood Hazard Layer — FIRM panels (retrieved Oct 26, 2026) · California Geological Survey, Alquist-Priolo Earthquake Fault Zones (retrieved Oct 26, 2026) · Zoning classes: our classification of C-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 11.9 yr (first record Dec 17, 2014), with no completion or new permit record in 11.3 yr. · 1 unit · $400,000 declared valuation
Permit issued and active for 11.3 yr (first record Jul 13, 2015), with no completion or new permit record in 10.6 yr. · 1 unit · $341,800 declared valuation
In "Applied" for 3.8 yr (since Dec 27, 2022), with no new permit record in 3.8 yr. · 1 unit · $1,000,000 declared valuation
In "Applied" for 2.5 yr (since May 13, 2024), with no new permit record in 2.5 yr. · 1 unit
Permit issued and active for 3.9 yr (first record Nov 29, 2022), with no completion or new permit record in 2.3 yr. · 1 unit · $1,000,000 declared valuation
Permit issued and active for 3.4 yr (first record Jun 6, 2023), with no completion or new permit record in 2 yr. · 1 unit · $1,783,932 declared valuation
Nearby plumbing / water heater / sewer (30 Kameha Way): First appeared in published agency feed
Record B48925 · Detected between snapshots
Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) · Snapshot diff within ½ mile
38 Kona Ln · 1 unit · $400,000 valuation
Records span Apr 5, 2022 to Sep 1, 2026 (1 permit).
Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) & HCD APR (grouped project within ½ mile)
0 Kona Ln & Oceana Dr · 1 unit · $525,000 valuation
Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) & HCD APR (grouped project within ½ mile)
22 Kameha Way (Adu 22a) · 1 unit · $156,800 valuation
Records span Dec 2, 2025 to Apr 8, 2026 (1 permit).
Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) & HCD APR (grouped project within ½ mile)
14 Maui Ln · 1 unit
Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) & HCD APR (grouped project within ½ mile)
537 Oceana Dr · 1 unit · $50,000 valuation
Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) & HCD APR (grouped project within ½ mile)
314 Oceana Dr · 1 unit · $1,783,932 valuation
Records span Jun 6, 2023 to Oct 15, 2024 (1 permit).
Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) & HCD APR (grouped project within ½ mile)
429 Oceana Dr · 1 unit · $1,000,000 valuation
Records span Nov 29, 2022 to Jul 12, 2024 (1 permit).
Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) & HCD APR (grouped project within ½ mile)
443 Oceana Dr · 1 unit
Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) & HCD APR (grouped project within ½ mile)
2 Maui Ln · 1 unit · $850,000 valuation
Records span Jul 31, 2023 to May 7, 2024 (1 permit).
Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) & HCD APR (grouped project within ½ mile)
543 Oceana Dr (Aka 545) · 1 unit · $540,000 valuation
Records span Dec 5, 2022 to Sep 14, 2023 (1 permit).
Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) & HCD APR (grouped project within ½ mile)
545 Oceana Dr · 1 unit · $1,300,000 valuation
Records span Dec 2, 2022 to Sep 13, 2023 (1 permit).
Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) & HCD APR (grouped project within ½ mile)
34 Kona Ln · 1 unit · $1,000,000 valuation
Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) & HCD APR (grouped project within ½ mile)
438 Oceana Dr · 1 unit · $1,100,000 valuation
Records span Jun 18, 2021 to Apr 13, 2022 (1 permit).
Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) & HCD APR (grouped project within ½ mile)
201 Oceana Dr · 1 unit · $600,000 valuation
Records span Oct 12, 2016 to Sep 1, 2021 (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 →Active in "Issued" for 11.9 yr (first record Dec 17, 2014) with no new permit activity recorded in 11.3 yr.
Active in "Applied" for 3.8 yr (first record Dec 27, 2022) with no new permit activity recorded in 3.8 yr. High-impact scale (1 housing unit, $1,000,000 declared valuation across 1 permit).
Active in "Issued" for 3.9 yr (first record Nov 29, 2022) with no new permit activity recorded in 2.3 yr. High-impact scale (1 housing unit, $1,000,000 declared valuation across 1 permit).
Active in "Issued" for 3.4 yr (first record Jun 6, 2023) with no new permit activity recorded in 2 yr. High-impact scale (1 housing unit, $1,783,932 declared valuation across 1 permit).
Active in "Applied" for 18 mo (first record May 5, 2025) with no new permit activity recorded in 18 mo.
Active in "Applied" for 22 mo (first record Jan 7, 2025) with no new permit activity recorded in 22 mo.
HUD Metro Fair Market Rent · San Francisco, CA HUD Metro FMR Area
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 ($16,000/yr) + local voter-approved bond debt ($2,400/yr) + fixed direct levies/Mello-Roos ($450/yr).
Mapped hazard zone insurance context on this parcel:
−$85,799/yr
Cash needed: $352,000
NOI: $11,287/yr
P&I: $8,090/mo
For $0/mo net cash flow
At $3,600/mo 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 | $3,312/mo | −$7,564/mo | -25.8% | $13,870/mo | −$7,573/mo |
| Base (your inputs) | Your entered assumptions, 3.0%/yr rent growth | $3,600/mo | −$7,150/mo | -24.4% | $12,838/mo | −$6,955/mo |
| Optimistic (cap-limited) | +6% starting rent, 3% vacancy, 4.5%/yr rent growth (capped by AB 1482 ceiling of 8.6%/yr) | $3,816/mo | −$6,913/mo | -23.6% | $12,540/mo | −$6,485/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 unitsDec 17, 2014 – Jul 14, 2015
We group related permits and State housing reports into projects. That grouping is our inference, not an official record.
New Single Family Dwelling T.D. 2/6/15
Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) · Geography: parcel (APN) · Retrieved Oct 28, 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 Oct 26, 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 Oct 28, 2026
0.20 acres
Assessor's classification for assessment purposes. This is not zoning.
Source: County of Marin GIS (MarinMap), Parcels · Geography: parcel · Retrieved Oct 28, 2026
Search by parcel number 100-321-07. Assessed value is not market value.
Search by parcel number 100-321-07 (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.