Mill Valley 94941 · Strawberry · APN 043-293-41 · Unincorporated Marin
Since October 2024 within ½ mile: 3 permitted, 2 proposed or in review; 3 demolitions.
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.
149 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.
Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) · Geography: permits located by parcel, ½ mile radius · Retrieved Oct 28, 2026
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 RSP-1-BFC 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 12 yr (first record Nov 5, 2014), with no completion or new permit record in 11.9 yr. · $10,000 declared valuation
Permit issued and active for 12.1 yr (first record Oct 2, 2014), with no completion or new permit record in 11.1 yr. · 1 unit · $631,507 declared valuation
Permit issued and active for 9.5 yr (first record Apr 13, 2017), with no completion or new permit record in 9.5 yr. · $55,000 declared valuation
Permit issued and active for 8.1 yr (first record Sep 19, 2018), with no completion or new permit record in 7.9 yr. · 1 unit · $30,000 declared valuation
In "Applied" for 7.6 yr (since Mar 14, 2019), with no new permit record in 7.6 yr. · 1 unit · $140,000 declared valuation
Permit issued and active for 7.6 yr (first record Mar 14, 2019), with no completion or new permit record in 7.4 yr. · 1 unit · $170,000 declared valuation
Nearby windows / doors / siding (145 Great Circle Dr): First appeared in published agency feed
Record B48901 · Detected between snapshots
Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) · Snapshot diff within ½ mile
Nearby remodel / interior alteration (263 Richardson Dr): No longer present in latest agency feed
Record 94402 · Detected between snapshots
Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) · Snapshot diff within ½ mile
Nearby remodel / interior alteration (263 Richardson Dr): First appeared in published agency feed
Record 182821 · Detected between snapshots
Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) · Snapshot diff within ½ mile
Nearby commercial tenant improvement (201 Seminary Dr (Building 3)): Description text was updated
Record 94586 · Detected between snapshots
Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) · Snapshot diff within ½ mile
Accessory dwelling unit (new or conversion) permit issued (182771)
Recorded status: Issued
Convert Basement Into Category 1 A D U. Replace Portion Of Existing Foundation. · Declared valuation: $225,000 · 1 housing unit
Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) · Geography: parcel
Latest published Zillow Home Value Index (ZHVI) update
Changed from $1,980,059 in September 2025 to $2,181,389 in September 2026.
Source: Zillow Home Value Index (ZHVI) · Data provided by Zillow · Geography: ZIP 94941 (not a parcel appraisal)
300 Storer Dr · $235,000 valuation
Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) & HCD APR (grouped project within ½ mile)
Remodel / interior alteration permit application filed (94356)
Current status: Applied
Remove And Replace (E) Skylights At Home Office With New Dormer And Window. Int. Office Remodel With (N) Partition Wall, Mini-Split Hvac, And Door. · Declared valuation: $68,000
Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) · Geography: parcel
Accessory dwelling unit (new or conversion) permit application filed (182771)
Current status: Issued
Convert Basement Into Category 1 A D U. Replace Portion Of Existing Foundation. · Declared valuation: $225,000
Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) · Geography: parcel
431 E Strawberry Dr · 1 unit · $400,000 valuation
Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) & HCD APR (grouped project within ½ mile)
201 Seminary Dr · $125,000 valuation
Records span Aug 22, 2025 to Jan 28, 2026 (2 permits).
Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) & HCD APR (grouped project within ½ mile)
4 Heron Dr · 1 unit · $225,000 valuation
Records span Sep 2, 2025 to Dec 3, 2025 (1 permit).
Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) & HCD APR (grouped project within ½ mile)
HVAC / heat pump permit application filed (B44856)
Current status: Issued
Remove & replace furnace & all ductwork located in crawlspace like for like. — Replace Ductwork, Replace Mechanical Appliance · Declared valuation: $40,000
Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) · Geography: parcel
HVAC / heat pump permit issued (B44856)
Recorded status: Issued
Remove & replace furnace & all ductwork located in crawlspace like for like. — Replace Ductwork, Replace Mechanical Appliance · Declared valuation: $40,000
Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) · Geography: parcel
Annual ZIP 94941 home-value index checkpoint
Changed from $2,042,452 in September 2024 to $1,980,059 in September 2025.
Source: Zillow Home Value Index (ZHVI) · Data provided by Zillow · Geography: ZIP 94941 (not a parcel appraisal)
HUD Small Area Fair Market Rent · ZIP 94941
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 ($21,800/yr) + local voter-approved bond debt ($3,270/yr) + fixed direct levies/Mello-Roos ($450/yr).
Insurance & hazard context:
−$123,092/yr
Cash needed: $479,600
NOI: $9,188/yr
P&I: $11,023/mo
For $0/mo net cash flow
At $3,950/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 | $3,634/mo | −$10,712/mo | -26.8% | $18,586/mo | −$10,741/mo |
| Base (your inputs) | Your entered assumptions, 3.0%/yr rent growth | $3,950/mo | −$10,258/mo | -25.7% | $17,203/mo | −$10,063/mo |
| Optimistic (cap-limited) | +6% starting rent, 3% vacancy, 4.5%/yr rent growth (capped by AB 1482 ceiling of 8.6%/yr) | $4,187/mo | −$9,997/mo | -25.0% | $16,803/mo | −$9,548/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 unitsJun 18, 2026 – Oct 20, 2026
We group related permits and State housing reports into projects. That grouping is our inference, not an official record.
Convert Basement Into Category 1 A D U. Replace Portion Of Existing Foundation.
Remove And Replace (E) Skylights At Home Office With New Dormer And Window. Int. Office Remodel With (N) Partition Wall, Mini-Split Hvac, And Door.
Remove & replace furnace & all ductwork located in crawlspace like for like. — Replace Ductwork, Replace Mechanical Appliance
(N) Residential Roof-mount Solar PV, (23) Modules, (9.315) kW (N) Battery Backup, (3) Tesla Powerwall
Firepit Plmbg; Ret Wall
Rpr/Rpl Parking Deck; Entry Stairs; Fence & Gate; New Doors Incl Garage Door & Gar Siding
Rmdl; Popout For Built-In Drawers; Repl Deck (Decks Removed From Scope 4/12/17) Decks Returned To Scope 5/11/17
Reroof With E-Inspection
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
0.38 acres
Assessor's classification for assessment purposes. This is not zoning.
427A STRAWBERRY DR; 427 E STRAWBERRY DR
Source: County of Marin GIS (MarinMap), Parcels · Geography: parcel · Retrieved Oct 28, 2026
Search by parcel number 043-293-41. Assessed value is not market value.
Search by parcel number 043-293-41 (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.