Ross 94957 · APN 072-061-18 · Ross
Since October 2024 within ½ mile: 3 homes completed, 3 permitted, 72 proposed or in review.
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.
138 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.
$4,844,000
Benchmark range: $4,117,000 – $5,571,000
Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) · Geography: permits located by parcel, ½ mile radius · Retrieved Oct 30, 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.
We don't have building permits for Ross, so we can't show what has been permitted nearby.
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 Ross's planning department before relying on it.
Sources: County of Marin GIS (MarinMap), Zoning (11 cities and unincorporated Marin) (retrieved Oct 30, 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 R-1_B-5A 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.
In "Entitled" for 2.5 yr (since Apr 25, 2024), with no new permit record in 2.5 yr. · 1 unit
Permit issued and active for 12.7 yr (first record Feb 4, 2014), with no completion or new permit record in 12.6 yr. · $5,000 declared valuation
In "Entitled" for 8.3 yr (since Jun 28, 2018), with no new permit record in 8.3 yr. · 1 unit
Permit issued and active for 8.5 yr (first record Apr 23, 2018), with no completion or new permit record in 8.1 yr. · 1 unit · $1,020,000 declared valuation
In "Entitled" for 8 yr (since Oct 18, 2018), with no new permit record in 8 yr. · 1 unit
Permit issued and active for 7.7 yr (first record Feb 28, 2019), with no completion or new permit record in 7.7 yr. · 1 unit
Nearby roof replacement (255 Poplar Dr): First appeared in published agency feed
Record B48953 · Detected between snapshots
Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) · Snapshot diff within ½ mile
Nearby plumbing / water heater / sewer (141 Laurel Grove Ave): First appeared in published agency feed
Record B48905 · Detected between snapshots
Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) · Snapshot diff within ½ mile
Latest published Zillow Home Value Index (ZHVI) update
Changed from $3,952,811 in September 2025 to $4,347,413 in September 2026.
Source: Zillow Home Value Index (ZHVI) · Data provided by Zillow · Geography: ZIP 94957 (not a parcel appraisal)
324 Palm Ave · 1 unit · $752,950 valuation
Records span Apr 8, 2026 to Sep 16, 2026 (1 permit).
Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) & HCD APR (grouped project within ½ mile)
71 units
Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) & HCD APR (grouped project within ½ mile)
Annual ZIP 94957 home-value index checkpoint
Changed from $3,924,850 in September 2024 to $3,952,811 in September 2025.
Source: Zillow Home Value Index (ZHVI) · Data provided by Zillow · Geography: ZIP 94957 (not a parcel appraisal)
231 Poplar Dr · 1 unit
Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) & HCD APR (grouped project within ½ mile)
Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) & HCD APR (grouped project within ½ mile)
Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) & HCD APR (grouped project within ½ mile)
450 Palm Ave · 1 unit · $33,636 valuation
Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) & HCD APR (grouped project within ½ mile)
237 Laurel Grove Ave (Adu 237a) · 1 unit · $500,000 valuation
Records span Aug 16, 2024 to Feb 11, 2025 (1 permit).
Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) & HCD APR (grouped project within ½ mile)
Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) & HCD APR (grouped project within ½ mile)
Annual ZIP 94957 home-value index checkpoint
Changed from $4,039,358 in September 2023 to $3,924,850 in September 2024.
Source: Zillow Home Value Index (ZHVI) · Data provided by Zillow · Geography: ZIP 94957 (not a parcel appraisal)
109 Hill Dr (Aka 111) · 1 unit · $480,000 valuation
Records span Apr 3, 2023 to May 29, 2024 (2 permits).
Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) & HCD APR (grouped project within ½ mile)
Planning entitlement approved for 1 housing unit (313 Upper Toyon)
Reported in 2024 Housing Element Annual Progress Report
ADU · Owner
Source: California HCD, Housing Element Annual Progress Report — Table A2 · Geography: parcel
Cross-referenced intelligence from our historical development graph—connecting parcels, permits, entity-resolved builders, empirical review-time distributions, and neighborhood renovation trends.
Explore full Ross development graph →Active in "Entitled" for 2.5 yr (first record Apr 25, 2024) with no new permit activity recorded in 2.5 yr.
Active in "Issued" for 3.1 yr (first record Sep 29, 2023) with no new permit activity recorded in 2.8 yr. High-impact scale (1 housing unit, $1,000,000 declared valuation across 1 permit).
Active in "Issued" for 8.5 yr (first record Apr 23, 2018) with no new permit activity recorded in 8.1 yr. High-impact scale (1 housing unit, $1,020,000 declared valuation across 2 permits).
Active in "Issued" for 3.6 yr (first record Apr 3, 2023) with no new permit activity recorded in 2.4 yr.
Active in "Issued" for 12.7 yr (first record Feb 4, 2014) with no new permit activity recorded in 12.6 yr.
Active in "Entitled" for 6.9 yr (first record Nov 25, 2019) with no new permit activity recorded in 6.9 yr.
HUD Small Area Fair Market Rent · ZIP 94957
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 ($48,450/yr) + local voter-approved bond debt ($7,268/yr) + fixed direct levies/Mello-Roos ($450/yr).
Mapped hazard zone insurance context on this parcel:
−$311,659/yr
Cash needed: $1,065,900
NOI: -$17,671/yr
P&I: $24,499/mo
For $0/mo net cash flow
At $4,500/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 | $4,140/mo | −$26,489/mo | -29.8% | $41,115/mo | −$26,718/mo |
| Base (your inputs) | Your entered assumptions, 3.0%/yr rent growth | $4,500/mo | −$25,972/mo | -29.2% | $38,055/mo | −$25,946/mo |
| Optimistic (cap-limited) | +6% starting rent, 3% vacancy, 4.5%/yr rent growth (capped by AB 1482 ceiling of 8.6%/yr) | $4,770/mo | −$25,675/mo | -28.9% | $37,171/mo | −$25,358/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.
Entitled1 unitsApr 25, 2024 – Apr 25, 2024
We group related permits and State housing reports into projects. That grouping is our inference, not an official record.
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 Oct 30, 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 |
|---|---|---|---|---|---|---|
| 2024 | 313 Upper Toyon(ADU24-0008) | ADU · Owner | 1 (Apr 25, 2024) | — | — | — |
Source: California HCD, Housing Element Annual Progress Report — Table A2 · Geography: project (parcel) · Retrieved Oct 26, 2026 · From Ross'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 30, 2026
1.00 acres
Assessor's classification for assessment purposes. This is not zoning.
313 UPPER TOYON DR
Source: County of Marin GIS (MarinMap), Parcels · Geography: parcel · Retrieved Oct 30, 2026
Search by parcel number 072-061-18. Assessed value is not market value.
Search by parcel number 072-061-18 (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.