Olema 94950 · Olema · APN 166-220-12 · Unincorporated Marin
Zoned C-RCR in Unincorporated Marin and mapped FEMA AE flood / CAL FIRE moderate fire hazard severity zone (state responsibility area) / Alquist-Priolo fault due diligence; benchmark value $1,250,000 ($1,063,000–$1,438,000).
On-parcel permit history is indexed through Jul 14, 2026, 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)
Zone AE: 1% annual chance flood (Special Flood Hazard Area) overlaps this parcel. Expect mandatory flood insurance for federally backed loans and floodplain elevation/mitigation rules for new units or SB 9 applications.
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.
Automated synthesis of indexed municipal, county, state, and federal public records — informational context only, not a formal appraisal, survey, or legal/tax determination.
7 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 14, 2026
$1,250,000
Benchmark range: $1,063,000 – $1,438,000
Source: CAL FIRE FHSZ (map Apr 1, 2024)
Intersects a State-mapped surface fault rupture zone. Adding habitable structures or subdividing typically requires a site-specific geologic fault investigation.
Source: California Geological Survey Alquist-Priolo Zones
General repair (160958): Issued after 6 mo (2.2× the 83d median) — above the 75th percentile for general repair permits in Unincorporated Marin (median 83d, 75th pct 181d, n=693).
Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) (review-time benchmark)
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 Nov 14, 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 C-RCR as commercial, 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.
Electrical / panel permit application filed (B47496)
Current status: Issued
Service Upgrade · Declared valuation: $5,000 · Contractor: Entwisle Electric Llc
Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) · Geography: parcel
Electrical / panel permit issued (B47496)
Recorded status: Issued
Service Upgrade · Declared valuation: $5,000 · Contractor: Entwisle Electric Llc
Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) · Geography: parcel
Electrical / panel permit application filed (B29152)
Current status: Issued
The work includes wiring 6 pumps and control wiring with panel and motor starters. 480 panel to transfer to 240 panel. Electrician is a C10, Nicholas Ioannou, license # 682841. This is for work at the Olema Campground wastewater system which is connected to the grid. NSU is an A-Engineering Contractor and is subcontracting Nicholas Ioannou DBA, NCI Electric. — New Circuits / Outlets, Service Upgrade · Declared valuation: $10,000 · Contractor: Natural Systems Utilities - Ca Inc
Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) · Geography: parcel
Electrical / panel permit issued (B29152)
Recorded status: Issued
The work includes wiring 6 pumps and control wiring with panel and motor starters. 480 panel to transfer to 240 panel. Electrician is a C10, Nicholas Ioannou, license # 682841. This is for work at the Olema Campground wastewater system which is connected to the grid. NSU is an A-Engineering Contractor and is subcontracting Nicholas Ioannou DBA, NCI Electric. — New Circuits / Outlets, Service Upgrade · Declared valuation: $10,000 · Contractor: Natural Systems Utilities - Ca Inc
Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) · Geography: parcel
Electrical / panel permit issued (B23931)
Recorded status: Issued
The work includes replacing 5 grinder pumps and control panels for the Olema Campground wastewater system to the existing grid. The replacement pumps are equivalent to the ones that are currently in place. We hold an A-Engineering Contractor's license and will subcontract a C10 to do the work. Nichole Houstone indicated it was acceptable for us to pull the permit. — Replace Circuits / Outlets · Declared valuation: $10,000 · Contractor: Natural Systems Utilities - Ca Inc
Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) · Geography: parcel
Electrical / panel permit application filed (B23931)
Current status: Issued
The work includes replacing 5 grinder pumps and control panels for the Olema Campground wastewater system to the existing grid. The replacement pumps are equivalent to the ones that are currently in place. We hold an A-Engineering Contractor's license and will subcontract a C10 to do the work. Nichole Houstone indicated it was acceptable for us to pull the permit. — Replace Circuits / Outlets · Declared valuation: $10,000 · Contractor: Natural Systems Utilities - Ca Inc
Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) · Geography: parcel
General repair permit issued (160958)
Recorded status: Issued
Rpr So. Wall & Foundation T.D. 9/24/18 · Declared valuation: $3,100 · Contractor: Owner
Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) · Geography: parcel
General repair permit application filed (160958)
Current status: Issued
Rpr So. Wall & Foundation T.D. 9/24/18 · Declared valuation: $3,100 · Contractor: Owner
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 →Issued after 6 mo (2.2× 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 |
|---|---|---|---|---|
| Natural Utilities CA | Electrical / panel | 2 on parcel2 in ½ mi | $20,000 | 0 vs 0 prior |
| Entwisle Electric | Electrical / panel | 1 on parcel1 in ½ mi | $5,000 | 0 vs 0 prior |
| Owner | General repair | 1 on parcel1 in ½ mi | $3,100 | 25 vs 15 prior+67% |
| Bic Construction Recent nearby: 10005 State Route 1 (Aug 4, 2022) | Commercial tenant improvement | 2 in ½ mi | $60,800 |
| Permit category | Sample (n) | 25th pct | Median (50th) | 75th pct | 90th pct | Recent 24m median |
|---|---|---|---|---|---|---|
| New single-family home | 121 | 166d | 253d | 456d | 686d | 210d(vs 276d 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) |
| Addition (adds square footage) |
HUD Small Area Fair Market Rent · ZIP 94950
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 ($12,500/yr) + local voter-approved bond debt ($1,875/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.
−$66,109/yr
Cash needed: $275,000
NOI: $9,739/yr
P&I: $6,321/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 | −$5,854/mo | -25.5% | $10,931/mo | −$5,860/mo |
| Base (your inputs) | Your entered assumptions, 3.0%/yr rent growth | $3,000/mo | −$5,509/mo | -24.0% | $10,118/mo | −$5,345/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 | −$5,311/mo | -23.2% | $9,883/mo | −$4,953/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.
Service Upgrade
The work includes wiring 6 pumps and control wiring with panel and motor starters. 480 panel to transfer to 240 panel. Electrician is a C10, Nicholas Ioannou, license # 682841. This is for work at the Olema Campground wastewater system which is connected to the grid. NSU is an A-Engineering Contractor and is subcontracting Nicholas Ioannou DBA, NCI Electric. — New Circuits / Outlets, Service Upgrade
The work includes replacing 5 grinder pumps and control panels for the Olema Campground wastewater system to the existing grid. The replacement pumps are equivalent to the ones that are currently in place. We hold an A-Engineering Contractor's license and will subcontract a C10 to do the work. Nichole Houstone indicated it was acceptable for us to pull the permit. — Replace Circuits / Outlets
Rpr So. Wall & Foundation T.D. 9/24/18
Source: County of Marin Community Development Agency, Building Permits (unincorporated Marin) · Geography: parcel (APN) · Retrieved Nov 14, 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 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 14, 2026
13.09 acres
Assessor's classification for assessment purposes. This is not zoning.
10155 STATE ROUTE 1
Source: County of Marin GIS (MarinMap), Parcels · Geography: parcel · Retrieved Nov 14, 2026
Search by parcel number 166-220-12. Assessed value is not market value.
Search by parcel number 166-220-12 (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.
| Diamond Engineering Services Dba Des Builders Recent nearby: 10005 State Route 1 (May 23, 2022) | New garage / accessory structure | 1 in ½ mi | $180,000 | 0 vs 0 prior |
| 316 |
| 103d |
| 160d |
| 249d |
| 440d |
| 159d(vs 166d 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) |
| Electrical / panelOn this parcel | 3,020 | 0d | 0d | 0d | 2d | 0d |
| General repairOn this parcel | 693 | 38d | 83d | 181d | 328d | 97d(vs 66d prior) |
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.