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1.7-acre residential lot near Jenner, Sonoma County

10801 Willig Dr · Parcel 099-131-051

County file October 2026

  • Acres1.7
  • Land typeVacancy not verifiedNo building found, October 2026
  • ZoningRR CC B7Exurban residential (state class)
  • Future land useRR 20
  • Flood zoneX
  • Assessed value (county)$27.1kProp. 13 value, not a market price
  • Last recorded saleJul 20, 2021 · $25k
  • Road accessHas road accessRoads: US Census TIGER/Line 2026 roads, Oct 2026
  • Road frontage376 ft on Willig Dr
  • BuildingNone on the roll
  • Who zones itSonoma CountyUnincorporated

Land facts

From public records and official maps, each with its source and date.

  • Section, township, rangeTownship 8 North, Range 13 West, Mount Diablo MeridianBLM PLSS (CadNSDI), at the parcel's center · Oct 2026
  • Septic (soils)Very limitedUSDA NRCS soil survey (SSURGO), septic absorption fields · Oct 2026
  • Ground elevationAbout 177–259 ft above sea levelUSGS 3DEP 1/3 arc-second (about 10 m), NAVD88; about ±1–2 ft · Oct 2026

Services and surroundings

Public federal and state records, each with its source and date. Area facts, not a survey of this parcel.

  • USDA home loan areaInside an eligible areaUSDA Rural Development eligibility map, last edited Jul 2023, read Oct 2026. Household income limits also apply
  • Well depth nearbyMedian 120 ft (middle half 54–138 ft)27 household well logs within 2 mi, drilled 1957–2018; water level 61 ft below ground (California DWR well completion reports). Area figures, not this parcel
  • Public land nearbyJenner Headlands Preserve, under 0.1 miNon-Governmental Organization, open to the public, 5,645 acres (USGS PAD-US 4.1). Nearby is not access, and never a hunting right

School district

Public federal records, each with its source and date.

  • School districtMonte Rio Union Elementary School District (grades K–8); West Sonoma County Union High School District (grades 9–12)NCES EDGE school district boundaries, school year 2024–25 (Census TIGER 2025 lines), released Mar 2026. A district, not an assigned school

District details at NCES: Monte Rio Union Elementary School District, West Sonoma County Union High School District

Utility service areas

Public service-area maps, each with its source and date. An area, not a connection at this parcel.

  • Electric service areaInside the service area of Pacific Gas & Electric Co. (approximate)Investor-owned utility · HIFLD electric retail service territories, frozen 2025 copy, edited Aug 2025; approximate, confirm with the utility
  • Water system areaInside the service area of Sonoma County Csa 41-jennerPublic water system CA4900532 · Boundary verified by the State Water Board, Sep 2019 · California State Water Board water system area boundaries, edited Oct 2020. Not a water line at the lot

Mapped ground hazards

State and federal geologic and well maps, each with its agency and date. Distances are from the parcel's map point; a mapped area is not a finding about this parcel.

  • Young faults (USGS)None mapped within 1 miUSGS: Quaternary Fault and Fold Database (historic and latest-Quaternary faults), read Oct 2026. USGS Quaternary Fault and Fold Database traces, mapped at 1:24,000 to 1:250,000; positions approximate. Not a state fault-zone (Alquist-Priolo) determination

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Land price (est.)No price estimate for this parcel yet
Open on the map
In this areaSonoma CountyParcels, flood and zoning12,509vacant parcels6.5%in a FEMA flood zone189,233parcels on the roll

Property tax

California Constitution art. XIII A (Prop 13) and the county assessment roll · 2026

Tax rate
About 1% of assessed value plus local voter-approved rates
If you buy
About 1% of the price you pay each year, plus local voter-approved ratesProp 13 resets the assessed value to the purchase price at a sale

The 1% general levy (Prop 13) plus the voter-approved rate of the parcel's tax rate area; bills also carry Mello-Roos and special assessments. California bills come from the county tax collector; we don't show bill amounts here.

California 2026-27 taxes: bills go out by November 1; first installment due by December 10, 2026, second by April 12, 2027; assessment appeals open until November 30, 2026. Pay or check a bill at the Sonoma County Auditor-Controller-Treasurer-Tax Collector.

Sources: California Revenue and Taxation Code 2617, 2618, 2619 and 1603; the State Board of Equalization’s 2026 appeal filing periods. Checked Oct 13, 2026.

Value history

2026: $27,060 ($27,060 land)

Roll values set for property tax · Sonoma County assessment roll · as of Oct 2026

Who decides

  • City or countyUnincorporated Sonoma County (Jenner, a Census community, not a city)The county sets zoning, ADU and SB 9 rules.California Department of Technology city boundaries · Sep 21, 2026

Assessed value (Prop 13)

  • $27,0602026 roll · The county does not publish the base yearIn California this is not a market value. Under Prop 13 it starts at the purchase price and rises at most 2% a year, so long-held property is usually assessed far below what it would sell for. Sonoma County publishes recorded sale prices, and Pro lists recorded land sales nearby. We show an estimated land value range on land with no building, and a price range on homes, only where our pre-registered test passed.County of Sonoma (CC BY-SA 3.0 US) · 2026

Zoning

  • RR CC B7 (Sonoma County's own code), state class “Exurban residential”. As of Q2 2022, collected from GIS Hub. Verify with Sonoma County: the state's classes are generalized.LCI California Zoning (New Classes), release Jan 15, 2026 · Q2 2022
  • General planRR 20 (Sonoma County's own designation), state class “Very low density residential”. As of Q2 2022.LCI California General Plan Land Use · Q2 2022

SB 9 signals

What the public maps say about this lot. Not a determination of eligibility and not legal advice; only Sonoma County decides.

  • Single-family zoneZoned RR CC B7, state class “Exurban residential”: looks single-family. Verify with Sonoma County: the state's classes are generalized.LCI California Zoning (New Classes), release Jan 15, 2026 · Q2 2022
  • Prime farmlandMapped as Urban and Built-Up Land, not prime farmland or farmland of statewide importance.DOC FMMP Important Farmland · 2022
  • WetlandsNo wetland mapped on the lot.USFWS National Wetlands Inventory · Oct 9, 2026
  • Fire hazard zoneNot in a mapped Very High zone, nor a High zone in the State Responsibility Area. A hazard map, not a risk score.CAL FIRE Fire Hazard Severity Zones · SRA Apr 1, 2024; LRA Mar 24, 2025 · Official map
  • Hazardous waste siteIn this parcel's environmental records check: EnviroStor cleanup and investigation sites (California Department of Toxic Substances Control (DTSC), as of Oct 17, 2026); GeoTracker cleanup cases (statewide snapshot) (California State Water Resources Control Board, as of Jan 26, 2023).California Department of Toxic Substances Control (DTSC); California State Water Resources Control Board · Jan 26, 2023 · Official map
  • Earthquake fault zoneCheck the California Geological Survey's earthquake fault zone map.CGS Alquist-Priolo · Official map
  • FEMA flood zoneNot in a Special Flood Hazard Area (zone X).FEMA National Flood Hazard Layer · Oct 10, 2026
  • FloodwayNo FEMA regulatory floodway on the lot.FEMA National Flood Hazard Layer · Oct 10, 2026
  • Conservation easement or planNone in PAD-US 4.1 easements (USGS Gap Analysis Project, as of 2025) at this parcel's map point. PAD-US does not carry every easement or habitat plan: check CCED and the city or county too.USGS Gap Analysis Project · 2025 · Official map
  • Protected species habitatCheck USFWS critical habitat.USFWS critical habitat · Official map
  • Historic propertyCheck with Sonoma County: no statewide layer lists historic landmarks and districts (AB 1061).No statewide layer
  • Tenants, rent control, Ellis ActCheck: whether a tenant lived here in the last 3 years, rent control and Ellis Act withdrawals are not in any public map. Ask Sonoma County.Not in public data
  • Lot split: urban areaOutside a 2020 Census urban area: the lot split needs a lot in an urbanized area or urban cluster.US Census 2020 urban areas · 2020
  • Lot split: lot sizeMapped lot area about 74,050 sq ft: two lots of at least 1,200 sq ft and 40% each could fit, on mapped lot area only.Parcel outline (county GIS) · Oct 11, 2026
  • Coastal ZoneIn the Coastal Zone: the Coastal Act and a Coastal Development Permit still apply.California Coastal Commission Coastal Zone · Oct 22, 2019

Gov. Code 65852.21 (two units) and 66411.7 (urban lot split), site exclusions in 65913.4(a)(6)(B)-(K); as amended by SB 450 (effective 2025-01-01) and AB 1061 (effective 2026-01-01, historic exclusion); Executive Order N-32-25 (2025 Los Angeles fires). Statute version read 2026-10-11.

ADU

  • Accessory dwelling unitsState ADU law (Gov. Code 66310-66342) applies to residential lots: at least 1 ADU + 1 JADU by right, subject to local standards. Check Sonoma County.HCD ADU Handbook (March 2026); Gov. Code 66310-66342

Housing

  • SB 35 / SB 423 streamliningSonoma County (unincorporated)'s SB 35 status: Exempt (HCD determination, data last edited Jun 23, 2023; no newer layer found). A possible streamlined site is not evaluated here.HCD SB 35 determinations · Jun 23, 2023

Fire

  • Fire Hazard Severity ZoneIn a mapped Moderate Fire Hazard Severity Zone (CAL FIRE Fire Hazard Severity Zone map, State Responsibility Area, effective Apr 1, 2024).CAL FIRE Fire Hazard Severity Zones · SRA Apr 1, 2024; LRA Mar 24, 2025 · Official map

Groundwater

  • Not over a DWR Bulletin 118 groundwater basin; well rules here come from the county.DWR Bulletin 118 (2025), SGMA basin priority (2019), Groundwater Sustainability Agencies · B118 2025; SGMA priority 2019; GSA layer read Oct 11, 2026

Coastal

  • Coastal ZoneIn the Coastal Zone: a Coastal Development Permit may be required (approximate boundary; the Coastal Commission determines).California Coastal Commission Coastal Zone boundary · Oct 22, 2019

Check before you buy

  • Earthquake fault zone (Alquist-Priolo)Check the California Geological Survey's official Earthquake Zones of Required Investigation map.Official map
  • Liquefaction / landslide zoneCheck the California Geological Survey's official Earthquake Zones of Required Investigation map. Many areas have not been evaluated by the state.Official map
  • Williamson Act contractCheck with the county assessor or planning department whether the parcel is under a Williamson Act contract.Official map

Owner: on the county assessment roll (not shown here). Request removal

Data: County of Sonoma (CC BY-SA 3.0 US). Sonoma County data is shared under CC BY-SA 3.0 US (https://creativecommons.org/licenses/by-sa/3.0/us/): credit “County of Sonoma”; anything built from it and shared in bulk carries the same licence.

Governor's Office of Land Use and Climate Innovation (LCI), California Zoning (New Classes). Zoning from the State of California's statewide zoning layer, provided as a public service for informational purposes only; it is not legal advice. Each jurisdiction's own zoning map governs.

Governor's Office of Land Use and Climate Innovation (LCI), California General Plan Land Use. General plan land use from the State of California's statewide layer, for informational purposes only; not legal advice. The jurisdiction's adopted general plan governs.

California Department of Housing and Community Development (HCD), SB 35 statewide determination. HCD's determination for the jurisdiction as published; a project's eligibility for streamlining is decided by the jurisdiction.

California Department of Technology, California city boundaries (from CDTFA / BOE). City limits as compiled by the state for tax administration; the city and county confirm jurisdiction.

Hazards

FEMA National Risk Index v1.20, planning-level · For this census tract, not this parcel · as of Dec 2025

Landslide
Very High
Earthquake
Relatively High
Wildfire
Relatively High
Riverine flooding
Relatively High
Coastal flooding
Relatively Low
Heat wave
Very Low
Strong wind
Very Low
Drought
No RatingFEMA computed no expected annual loss for this census tract; not a statement about this parcel

Ratings are from public federal and state maps (named on each row), not a private climate model. FEMA rates each census tract from expected annual losses, community resilience and social vulnerability, for planning; it is not an assessment of this parcel.

Recorded flood claims

OpenFEMA NFIP Redacted Claims v3 · Insured buildings near this parcel, not the parcel itself · as of Sep 2026

Claims since 1978
30In this census block group
Outside the mapped flood zone
37%Rated zone X, B or C

Neighborhood (Census)

Census ACS 2020–2024 5-year · as of Jan 2026

Median household income
$73,667± $24,204 · this block group
Median home value (owner-reported)
$742,500± $86,448 · census tract (block group sample too small)
Median rent (gross)
$1,693± $349 · this block group
Homes lived in by their owners
82%± 18 pts · this block group
Median year homes were built
1964± 5 yr · this block group
Average commute (one way)
30 min± 12 min · census tract (not published for block groups)
Population
445± 178 · this block group

Figures for the census block group around this parcel (a few hundred homes), not this property. ± is the Census 90% margin of error; a figure comes from the larger census tract when the block group's sample is too small. This product uses Census Bureau data but is not endorsed or certified by the Census Bureau.

Nearby parcels

Land and farm parcels of 1 acre or more in Sonoma County, nearest first.

Every parcel page in Sonoma County (459)

About these numbersSources, county file October 2026

Assessed value

Assessed value (Prop. 13), not a market price. County file, October 2026.

Assessed value $27,060 (2026 roll; the county does not publish the base year). In California this is not a market value. Under Prop 13 it starts at the purchase price and rises at most 2% a year, so long-held property is usually assessed far below what it would sell for.

Land type

No building found: county roll (2026) and building footprints (Overture Maps with Microsoft and OpenStreetMap, Sep 2026) · County assessor roll; Overture Maps 2026-09-23.1

Parcel outline

The outline and its edge lengths are measured on the parcel map the map draws; the aerial loads from the public imagery named under it.

Source

Sonoma County of Sonoma, county file Oct 11, 2026.

Record

Public records can be wrong; check before you act.

Parcel: 099-131-051

Coordinates: 38.4528° N, 123.1194° W