Fairfax 94930 · Unincorporated Fairfax · APN 174-034-05 · Unincorporated Marin
Since October 2024 within ½ mile: 1 homes completed.
1 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.
111 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 31, 2026
$1,452,000
Benchmark range: $1,278,000 – $1,626,000
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 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 7.9 yr (first record Nov 26, 2018), with no completion or new permit record in 7.9 yr. · 54 units
Permit issued and active for 5.7 yr (first record Jan 29, 2021), with no completion or new permit record in 5.7 yr. · 1 unit
In "Entitled" for 5.3 yr (since Jul 9, 2021), with no new permit record in 5.3 yr. · 1 unit
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)
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)
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 $1,214,660 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)
HVAC / heat pump permit application filed (B38447)
Current status: Issued
Replace water heater with 58 gallon heat pump water heater. — Replace Plumbing Fixtures(s) · Declared valuation: $7,066 · Contractor: John Owens Services Inc
Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) · Geography: parcel
HVAC / heat pump permit issued (B38447)
Recorded status: Issued
Replace water heater with 58 gallon heat pump water heater. — Replace Plumbing Fixtures(s) · Declared valuation: $7,066 · Contractor: John Owens Services Inc
Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) · Geography: parcel
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)
1 housing unit completed (89897)
Reported in 2023 Housing Element Annual Progress Report
ADU · Renter
Source: California HCD, Housing Element Annual Progress Report — Table A2 · Geography: parcel
Solar / battery storage permit application filed (B32479)
Current status: Issued
PHOTOVOLTAIC - RESIDENTIAL FLUSH ROOF MOUNT, GRID TIED. SYSTEM SIZE 6.80 kW (DC STC) · Declared valuation: $30,000 · Contractor: Sonomarin Solar_inc
Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) · Geography: parcel
Solar / battery storage permit issued (B32479)
Recorded status: Issued
PHOTOVOLTAIC - RESIDENTIAL FLUSH ROOF MOUNT, GRID TIED. SYSTEM SIZE 6.80 kW (DC STC) · Declared valuation: $30,000 · Contractor: Sonomarin Solar_inc
Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) · Geography: parcel
HVAC / heat pump permit application filed (B32328)
Current status: Issued
Install new heat pump system and replace ducts. — Replace Ductwork, Mechanical Appliance · Declared valuation: $34,098 · Contractor: John Owens Services Inc
Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) · Geography: parcel
HVAC / heat pump permit issued (B32328)
Recorded status: Issued
Install new heat pump system and replace ducts. — Replace Ductwork, Mechanical Appliance · Declared valuation: $34,098 · Contractor: John Owens Services Inc
Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) · Geography: parcel
Building permit reported to State HCD for 1 housing unit (89897)
Reported in 2023 Housing Element Annual Progress Report
ADU · Renter
Source: California HCD, Housing Element Annual Progress Report — Table A2 · Geography: parcel
Accessory dwelling unit (new or conversion) permit issued (172492)
Recorded status: Issued
New Detached A D U; Deck; M P U · Declared valuation: $169,400 · 1 housing unit · Contractor: Burton Builders Llc
Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) · Geography: parcel
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)
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 7.9 yr (first record Nov 26, 2018) with no new permit activity recorded in 7.9 yr. High-impact scale (54 housing units, 54 deed-restricted affordable across 0 permits).
Active in "Entitled" for 5.3 yr (first record Jul 9, 2021) with no new permit activity recorded in 5.3 yr.
Active in "Issued" for 5.7 yr (first record Jan 29, 2021) with no new permit activity recorded in 5.7 yr.
High-impact scale (54 housing units, 54 deed-restricted affordable across 0 permits).
Substantial improvements (additions, interior remodels, ADUs, commercial TI, and new builds) across 470 parcels
Small prior baseline
City baseline: 16.5 / 1k
6 in trailing 24m
Includes 1 ADUs
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 ($14,500/yr) + local voter-approved bond debt ($2,175/yr) + fixed direct levies/Mello-Roos ($450/yr).
Mapped hazard zone insurance context on this parcel:
−$78,223/yr
Cash needed: $319,000
NOI: $9,761/yr
P&I: $7,332/mo
For $0/mo net cash flow
At $3,250/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 | $2,990/mo | −$6,892/mo | -25.9% | $12,610/mo | −$6,904/mo |
| Base (your inputs) | Your entered assumptions, 3.0%/yr rent growth | $3,250/mo | −$6,519/mo | -24.5% | $11,672/mo | −$6,346/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 | −$6,304/mo | -23.7% | $11,401/mo | −$5,922/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.
Finaled / completed1 unitsMay 17, 2022 – Oct 24, 2022
We group related permits and State housing reports into projects. That grouping is our inference, not an official record.
Replace water heater with 58 gallon heat pump water heater. — Replace Plumbing Fixtures(s)
PHOTOVOLTAIC - RESIDENTIAL FLUSH ROOF MOUNT, GRID TIED. SYSTEM SIZE 6.80 kW (DC STC)
Install new heat pump system and replace ducts. — Replace Ductwork, Mechanical Appliance
New Detached A D U; Deck; M P U
REMOVE AND REPLACE CLASS A COMP SHINGLE ROOF — ReRoofing; With Electronic Inspection
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.
| Report year | Project / record | Type | Entitled | Permitted | Completed | Deed-restricted |
|---|---|---|---|---|---|---|
| 2023 | —(89897) | ADU · Renter | — | 1 (Oct 24, 2022) | 1 (Jul 5, 2023) | — |
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
0.16 acres
Assessor's classification for assessment purposes. This is not zoning.
31 GREGORY DR; 33 GREGORY DR
Source: County of Marin GIS (MarinMap), Parcels · Geography: parcel · Retrieved Oct 31, 2026
Search by parcel number 174-034-05. Assessed value is not market value.
Search by parcel number 174-034-05 (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.