Petaluma 94952 · APN 125-040-45 · Unincorporated Marin
Zoned A60 in Unincorporated Marin and mapped CAL FIRE moderate fire hazard severity zone (state responsibility area) due diligence.
On-parcel permit history is indexed through Jun 2, 2025, letting you verify roof, HVAC, electrical, or structural work against seller disclosures.
Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) (parcel APN)
all of the lot of the parcel intersects Zone X: minimal flood hazard. Outside mandatory federal SFHA insurance rules, but check local drainage and finished-floor requirements.
Source: FEMA National Flood Hazard Layer (parcel polygon)
Located in a mapped Fire Hazard Severity Zone. Expect Chapter 7A ignition-resistant building standards, defensible-space inspections, and stricter property insurance underwriting.
Source: CAL FIRE FHSZ (map Apr 1, 2024)
New home at 5231 Red Hill Rd: Active in "Issued" for 11.9 yr (first record Dec 23, 2014) with no new permit activity recorded in 8.2 yr.
Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) (review-time benchmark)
Automated synthesis of indexed municipal, county, state, and federal public records — informational context only, not a formal appraisal, survey, or legal/tax determination.
2 permits within ½ mile since November 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 Nov 13, 2026
Insufficient area benchmark data
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 Nov 13, 2026) · CAL FIRE Office of the State Fire Marshal, Fire Hazard Severity Zones in the State Responsibility Area (effective 2024-04-01) (retrieved Nov 9, 2026) · CAL FIRE Office of the State Fire Marshal, Fire Hazard Severity Zones in the Local Responsibility Area (map dated 2025-03-24) (retrieved Nov 9, 2026) · FEMA, National Flood Hazard Layer — flood hazard zones (retrieved Nov 9, 2026) · FEMA, National Flood Hazard Layer — FIRM panels (retrieved Nov 9, 2026) · California Geological Survey, Alquist-Priolo Earthquake Fault Zones (retrieved Nov 9, 2026) · Zoning classes: our classification of A60 as agricultural, 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 23, 2014), with no completion or new permit record in 8.2 yr. · 1 unit · $666,750 declared valuation
Nearby solar / battery storage (5549 Pt Reyes-Petaluma Rd): Description text was updated
Record 182717 · Detected between snapshots
Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) · Snapshot diff within ½ mile
HVAC / heat pump permit application filed (B42601)
Current status: Issued
replace ductless heatpump. install mitsubshi unit — Replace Mechanical Appliance · Declared valuation: $6,000 · Contractor: Adams Refrigeration Service Inc A California Corpo
Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) · Geography: parcel
HVAC / heat pump permit issued (B42601)
Recorded status: Issued
replace ductless heatpump. install mitsubshi unit — Replace Mechanical Appliance · Declared valuation: $6,000 · Contractor: Adams Refrigeration Service Inc A California Corpo
Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) · Geography: parcel
Solar / battery storage permit issued (166069)
Recorded status: Issued
Pv Solar 8.60kw - F.T. · Declared valuation: $38,831 · Contractor: Sun First Inc
Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) · Geography: parcel
Solar / battery storage permit issued (166070)
Recorded status: Issued
Battery Back Up · Declared valuation: $26,000 · Contractor: Sun First Inc
Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) · Geography: parcel
Solar / battery storage permit application filed (166069)
Current status: Issued
Pv Solar 8.60kw - F.T. · Declared valuation: $38,831 · Contractor: Sun First Inc
Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) · Geography: parcel
Solar / battery storage permit application filed (166070)
Current status: Issued
Battery Back Up · Declared valuation: $26,000 · Contractor: Sun First Inc
Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) · Geography: parcel
Building permit reported to State HCD for 1 housing unit (159554)
Reported in 2018 Housing Element Annual Progress Report
SFD · Owner
Source: California HCD, Housing Element Annual Progress Report — Table A2 · Geography: parcel
New single-family home permit issued (159554)
Recorded status: Issued
.S F D T.D. 1/31/18 · Declared valuation: $666,750 · 1 housing unit · Contractor: Owner/Builder
Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) · Geography: parcel
General repair permit issued (159555)
Recorded status: Issued
Retaining Wall - Main · Declared valuation: $15,000 · Contractor: Owner/Builder
Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) · Geography: parcel
General repair permit issued (159556)
Recorded status: Issued
Retaining Wall - Upper · Declared valuation: $15,000 · Contractor: Owner/Builder
Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) · Geography: parcel
General repair permit issued (159557)
Recorded status: Issued
Retaining Wall - Lower · Declared valuation: $30,000 · Contractor: Owner/Builder
Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) · Geography: parcel
New single-family home permit application filed (159554)
Current status: Issued
.S F D T.D. 1/31/18 · Declared valuation: $666,750 · Contractor: Owner/Builder
Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) · Geography: parcel
General repair permit application filed (159555)
Current status: Issued
Retaining Wall - Main · Declared valuation: $15,000 · Contractor: Owner/Builder
Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) · Geography: parcel
General repair permit application filed (159556)
Current status: Issued
Retaining Wall - Upper · Declared valuation: $15,000 · Contractor: Owner/Builder
Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) · 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 Unincorporated Marin development graph →Active in "Issued" for 11.9 yr (first record Dec 23, 2014) with no new permit activity recorded in 8.2 yr.
Issued after 9 mo (3.2× the 83d median) — above the 75th percentile for general repair permits in Unincorporated Marin (median 83d, 75th pct 181d, n=693).
Issued after 9 mo (3.2× the 83d median) — above the 75th percentile for general repair permits in Unincorporated Marin (median 83d, 75th pct 181d, n=693).
Issued after 9 mo (3.2× the 83d median) — above the 75th percentile for general repair permits in Unincorporated Marin (median 83d, 75th pct 181d, n=693).
| Builder / contractor | Primary specialty | Here / ½ mi | ½ mi valuation | Citywide 24m trend |
|---|---|---|---|---|
| Owner Builder | General repair | 4 on parcel4 in ½ mi | $726,750 | 226 vs 240 prior−6% |
| Sun First | Solar / battery storage | 2 on parcel2 in ½ mi | $64,831 | 0 vs 0 prior |
| Morita Construction | New single-family home | 1 on parcel1 in ½ mi | $200,000 |
| Permit category | Sample (n) | 25th pct | Median (50th) | 75th pct | 90th pct | Recent 24m median |
|---|---|---|---|---|---|---|
| New single-family homeOn this parcel | 121 | 166d | 253d | 456d | 686d | 211d(vs 273d prior) |
| New multifamily / condos / mixed-use | 21 | 272d | 292d | 293d | 313d | 293d(vs 197d prior) |
| Accessory dwelling unit (new or conversion) | 298 | 120d | 204d | 331d | 549d | 214d(vs 181d prior) |
HUD Small Area Fair Market Rent · ZIP 94952
HUD FY 2026 · 40th-percentile gross rentArea 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 ($5,500/yr) + local voter-approved bond debt ($825/yr) + fixed direct levies/Mello-Roos ($450/yr).
Mapped hazard zone insurance context on this parcel:
Model adding a backyard ADU or garage conversion under California's Prop 13 blended new-construction assessment (existing house & land tax base stays intact; only ADU build cost is assessed) and SB 13 impact-fee rules.
−$15,584/yr
Cash needed: $121,000
NOI: $17,789/yr
P&I: $2,781/mo
For $0/mo net cash flow
At $3,000/mo gross 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 | $2,760/mo | −$1,643/mo | -16.3% | $5,054/mo | −$1,594/mo |
| Base (your inputs) | Your entered assumptions, 3.0%/yr rent growth | $3,000/mo | −$1,299/mo | -12.9% | $4,678/mo | −$1,079/mo |
| Optimistic (cap-limited) | +6% starting rent, 3% vacancy, 4.5%/yr rent growth (capped by AB 1482 ceiling of 8.6%/yr) | $3,180/mo | −$1,101/mo | -10.9% | $4,569/mo | −$688/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 23, 2014 – Sep 12, 2018
We group related permits and State housing reports into projects. That grouping is our inference, not an official record.
replace ductless heatpump. install mitsubshi unit — Replace Mechanical Appliance
Battery Back Up
Pv Solar 8.60kw - F.T.
Retaining Wall - Lower
Retaining Wall - Upper
Retaining Wall - Main
.S F D T.D. 1/31/18
P V Sys 4.5 K W - Express
Tear Down & Rbld 750 Sf N.S.F.D. W/ Garage Below & Patio T.D. 02/17/15
Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) · Geography: parcel (APN) · Retrieved Nov 13, 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 |
|---|---|---|---|---|---|---|
| 2018 | —(159554) | SFD · Owner | — | 1 (Sep 12, 2018) | — | — |
Source: California HCD, Housing Element Annual Progress Report — Table A2 · Geography: project (parcel) · Retrieved Nov 9, 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 Nov 13, 2026
6.54 acres
Assessor's classification for assessment purposes. This is not zoning.
5231 RED HILL RD; 5233 RED HILL RD
Source: County of Marin GIS (MarinMap), Parcels · Geography: parcel · Retrieved Nov 13, 2026
Search by parcel number 125-040-45. Assessed value is not market value.
Search by parcel number 125-040-45 (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.
| 0 vs 0 prior |
| American Solar | Solar / battery storage | 1 on parcel1 in ½ mi | $26,350 | 0 vs 0 prior |
| Adams Refrigeration Service A California Corpo | HVAC / heat pump | 1 on parcel1 in ½ mi | $6,000 | 0 vs 0 prior |
| Addition (adds square footage) | 316 | 103d | 160d | 249d | 440d | 157d(vs 167d prior) |
| Remodel / interior alteration | 1,054 | 36d | 83d | 148d | 266d | 112d(vs 77d prior) |
| Commercial tenant improvement | 81 | 99d | 148d | 233d | 443d | 152d(vs 150d prior) |
| Solar / battery storageOn this parcel | 2,977 | 0d | 0d | 0d | 2d | 0d |
| HVAC / heat pumpOn this parcel | 2,946 | 0d | 0d | 0d | 0d | 0d |
Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) · Computed from issued permits with recorded application and issuance dates over the trailing 60 months. Categories with fewer than 20 permits are excluded.