Greenbrae 94904 · Kentfield · APN 022-060-22 · Unincorporated Marin
Since October 2024 within ½ mile: 11 permitted; 1 commercial or mixed-use project.
12 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.
232 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.
$2,216,000
Benchmark range: $1,950,000 – $2,482,000
Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) · Geography: permits located by parcel, ½ mile radius · Retrieved Oct 31, 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 Oct 31, 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 PF as public / institutional, 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 12.7 yr (first record Mar 6, 2014), with no completion or new permit record in 12.4 yr. · $2,400,000 declared valuation
Permit issued and active for 11.9 yr (first record Dec 8, 2014), with no completion or new permit record in 11.6 yr. · $1,000 declared valuation
Permit issued and active for 11.7 yr (first record Feb 17, 2015), with no completion or new permit record in 11.4 yr. · 1 unit · $600,000 declared valuation
Permit issued and active for 11.4 yr (first record May 19, 2015), with no completion or new permit record in 10.5 yr. · $80,000 declared valuation
Permit issued and active for 11.6 yr (first record Mar 18, 2015), with no completion or new permit record in 9.4 yr. · $7,200 declared valuation
Permit issued and active for 8.5 yr (first record May 9, 2018), with no completion or new permit record in 6.7 yr. · $345,000 declared valuation
Nearby windows / doors / siding (160 Tioga Ln): First appeared in published agency feed
Record B48932 · Detected between snapshots
Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) · Snapshot diff within ½ mile
Nearby other (70 Lancaster Ave): First appeared in published agency feed
Record B48941 · Detected between snapshots
Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) · Snapshot diff within ½ mile
Nearby other (110 Corte Anita): First appeared in published agency feed
Record B48939 · Detected between snapshots
Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) · Snapshot diff within ½ mile
Nearby commercial tenant improvement (250 Bon Air Rd): First appeared in published agency feed
Record 94609 · Detected between snapshots
Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) · Snapshot diff within ½ mile
Nearby permit (b8db6838c020c1df3849679810d5f2210e644e76): First appeared in published agency feed
Detected between snapshots
Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) · Snapshot diff within ½ mile
Nearby permit (d167602d8a61a9dbcae8bb0646178d41cefc3920): First appeared in published agency feed
Detected between snapshots
Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) · Snapshot diff within ½ mile
General repair permit issued (182729)
Recorded status: Issued
Retaining Wall, Fencing, Gate
Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) · Geography: parcel
Plumbing / water heater / sewer permit issued (182730)
Recorded status: Issued
(N) 1625 Kw Natural Gas Exterior Fuel Cell System
Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) · Geography: parcel
Latest published Zillow Home Value Index (ZHVI) update
Changed from $2,157,052 in September 2025 to $2,308,409 in September 2026.
Source: Zillow Home Value Index (ZHVI) · Data provided by Zillow · Geography: ZIP 94904 (not a parcel appraisal)
435 Los Cerros Dr · 1 unit · $150,000 valuation
Records span Jul 11, 2025 to Jun 5, 2026 (1 permit).
Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) & HCD APR (grouped project within ½ mile)
General repair permit application filed (182729)
Current status: Issued
Retaining Wall, Fencing, Gate
Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) · Geography: parcel
Plumbing / water heater / sewer permit application filed (182730)
Current status: Issued
(N) 1625 Kw Natural Gas Exterior Fuel Cell System
Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) · Geography: parcel
70 Berens Dr (A D U 70 A) · 1 unit · $200,000 valuation
Records span Jul 18, 2025 to Nov 26, 2025 (1 permit).
Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) & HCD APR (grouped project within ½ mile)
Annual ZIP 94904 home-value index checkpoint
Changed from $2,256,428 in September 2024 to $2,157,052 in September 2025.
Source: Zillow Home Value Index (ZHVI) · Data provided by Zillow · Geography: ZIP 94904 (not a parcel appraisal)
33 Bretano Way · 1 unit · $750,000 valuation
Records span Apr 11, 2025 to Sep 24, 2025 (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 "Entitled" for 3.7 yr (first record Feb 1, 2023) with no new permit activity recorded in 3.7 yr. High-impact scale (20 housing units, 4 deed-restricted affordable across 0 permits).
Active in "Issued" for 12.7 yr (first record Mar 6, 2014) with no new permit activity recorded in 12.4 yr. High-impact scale ($2,400,000 declared valuation across 2 permits).
Active in "Issued" for 19 mo (first record Apr 11, 2025) with no new permit activity recorded in 13 mo. High-impact scale (1 housing unit, $750,000 declared valuation across 1 permit).
Active in "Applied" for 2.8 yr (first record Jan 17, 2024) with no new permit activity recorded in 2.8 yr. High-impact scale (1 housing unit, $750,000 declared valuation across 1 permit).
Active in "Issued" for 11.6 yr (first record Mar 18, 2015) with no new permit activity recorded in 9.4 yr.
Active in "Issued" for 11.4 yr (first record May 19, 2015) with no new permit activity recorded in 10.5 yr.
Substantial improvements (additions, interior remodels, ADUs, commercial TI, and new builds) across 2,520 parcels
−34.9% YoY
City baseline: 16.5 / 1k
104 in trailing 24m
Includes 30 ADUs
HUD Small Area Fair Market Rent · ZIP 94904
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 ($22,150/yr) + local voter-approved bond debt ($3,323/yr) + fixed direct levies/Mello-Roos ($450/yr).
Insurance & hazard context:
−$131,887/yr
Cash needed: $487,300
NOI: $2,516/yr
P&I: $11,200/mo
For $0/mo net cash flow
At $3,275/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 | $3,013/mo | −$11,367/mo | -28.0% | $18,880/mo | −$11,427/mo |
| Base (your inputs) | Your entered assumptions, 3.0%/yr rent growth | $3,275/mo | −$10,991/mo | -27.1% | $17,475/mo | −$10,865/mo |
| Optimistic (cap-limited) | +6% starting rent, 3% vacancy, 4.5%/yr rent growth (capped by AB 1482 ceiling of 8.6%/yr) | $3,472/mo | −$10,774/mo | -26.5% | $17,069/mo | −$10,437/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.
(N) 1625 Kw Natural Gas Exterior Fuel Cell System
Retaining Wall, Fencing, Gate
Reconstruct Ada Ramp Walkway ***Extended To 6/30/22 Nh
Wall-Mounted Ev Charging Stations In Parking Garage
New Asphalt& Permeable Surface Drive Aisles, Accessible Curb And Ped. Pathways***Expired
Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) · Geography: parcel (APN) · Retrieved Oct 31, 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 31, 2026
15.87 acres
Assessor's classification for assessment purposes. This is not zoning.
250 BON AIR RD
Source: County of Marin GIS (MarinMap), Parcels · Geography: parcel · Retrieved Oct 31, 2026
Search by parcel number 022-060-22. Assessed value is not market value.
Search by parcel number 022-060-22 (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.