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3.97 acres of farm and timber land in Sonoma County

247 4th St E, Sonoma, CA · Parcel 018-141-012

County file October 2026

  • Home4,382 sq ft · built 1946Living area of all buildings on the parcel
  • Acres3.97
  • Land typeFarm and timber
  • ZoningR-HSHillside residential (1 d.u./10 acres maximum)
  • Future land useHillsideLow density residential (state class)
  • Flood zoneX · minimal flood hazard
  • WetlandsNone mappedNational Wetlands Inventory
  • Assessed value (county)$2.57MProp. 13 value, not a market price · 2026 roll
  • Last saleNo recorded sale in the county file (as of Aug 2026)Sonoma County sales file
  • Road accessHas road accessRoads: US Census TIGER/Line 2026 roads, Oct 2026
  • Road frontage302 ft on 4th St E
  • Who zones itInside the City of Sonoma limits; Sonoma sets the zoning
  • Zoned bySonoma

Land facts

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

  • Section, township, rangeTownship 5 North, Range 5 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 118–177 ft above sea level; average slope 15.3%USGS 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 410 ft (middle half 300–540 ft)193 household well logs within 1 mi, drilled 1956–2025; water level 70 ft below ground (California DWR well completion reports). Area figures, not this parcel
  • Public land nearbySonoma State Historic Park, 0.3 miState Park and Recreation, open to the public, 65 acres (USGS PAD-US 4.1). Nearby is not access, and never a hunting right

School district and farmland

Public federal records, each with its source and date.

  • School districtSonoma Valley Unified School DistrictGrades K–12 · NCES EDGE school district boundaries, school year 2024–25 (Census TIGER 2025 lines), released Mar 2026. A district, not an assigned school
  • Farmland classNot prime farmlandMap unit Goulding-Toomes complex, 9 to 50 percent slopes, about 91% of the parcel · USDA NRCS soil survey (SSURGO), survey area CA097, version Sep 2026
  • Crop productivity (NCCPI)0.34 of 1National Commodity Crop Productivity Index 3.0 of the main soil, Goulding; higher is more productive for non-irrigated commodity crops · USDA NRCS soil survey (SSURGO), version Sep 2026
  • Land capability classClass 6e of 8: generally unsuited to tilled crops (erosion)Non-irrigated, Goulding; class 1 has the fewest limits · USDA NRCS soil survey (SSURGO), version Sep 2026

District details at NCES: Sonoma Valley Unified School District

Crops and forest

Public federal records, each with its source and year. Satellite classifications, not farm records.

  • Hydric soilsNone mappedShare of the outline on soils rated hydric: the soil test of a wetland determination and of an NRCS wetland reserve easement (ACEP-WRE) · USDA NRCS soil survey (SSURGO)

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 City of SonomaPublic water system CA4910012 · 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 areaSonomaParcels, flood and zoning124vacant-coded on the roll, not verified4.3%in a FEMA flood zone4,787parcels on the roll

Home facts

County of Sonoma · as of Oct 2026

Bedrooms
4 (all buildings)
Bathrooms
4 (all buildings)
Living area
4,382 sq ft, all buildings
Year built
1946
Buildings
2

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: $2,568,355 ($1,685,864 land, $882,491 improvements)

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

Who decides

  • City or countyInside the City of Sonoma's limitsThe City of Sonoma sets zoning, ADU and SB 9 rules.California Department of Technology city boundaries · Sep 21, 2026

Assessed value (Prop 13)

  • $2,568,3552026 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

  • R-HS (Sonoma's own code), state class “Exurban residential”. As of Q1 2022, collected from Direct. Verify with Sonoma: the state's classes are generalized.LCI California Zoning (New Classes), release Jan 15, 2026 · Q1 2022
  • General planHillside (Sonoma's own designation), state class “Low density residential”. As of Q1 2022.LCI California General Plan Land Use · Q1 2022

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 the City of Sonoma.HCD ADU Handbook (March 2026); Gov. Code 66310-66342

Housing

  • SB 35 / SB 423 streamliningCheck HCD's current determination for Sonoma: the only map layer HCD publishes is its June 2023 determination, HCD has determined again since (June 2025), and under SB 423 a city or county without a compliant housing element must streamline projects with 10% affordable units. A possible streamlined site is not evaluated here.HCD SB 35 / SB 423 determinations · Jun 23, 2023 · Official map
  • Opportunity mapCTCAC/HCD opportunity area: High Resource (used for tax-credit housing).CTCAC/HCD Opportunity Map 2026 · 2025-12

Fire

  • Fire Hazard Severity ZoneIn a mapped Very High Fire Hazard Severity Zone (CAL FIRE Fire Hazard Severity Zone map, Local Responsibility Area, dated Mar 24, 2025). Local Responsibility Area maps take effect when the city or county adopts them by ordinance, and the adopted map can differ from CAL FIRE's; check with the City of Sonoma.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

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 Tax Credit Allocation Committee (CTCAC) and HCD, 2026 Opportunity Map. Used by CTCAC to score tax-credit housing applications; it describes the census tract, not the parcel.

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

Earthquake
Relatively High
Riverine flooding
Relatively High
Wildfire
Relatively Moderate
Landslide
Relatively Moderate
Drought
Relatively Low
Heat wave
Very Low
Strong wind
Very Low
Coastal flooding
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
12In this census tract
Outside the mapped flood zone
Fewer than 10Rated zone X, B or C

Neighborhood (Census)

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

Median household income
$98,144± $28,492 · this block group
Median home value (owner-reported)
$941,700± $172,987 · this block group
Median rent (gross)
$2,696± $96 · this block group
Homes lived in by their owners
52%± 3 pts · this block group
Median year homes were built
1975± 2 yr · this block group
Average commute (one way)
19 min± 9 min · census tract (not published for block groups)
Population
700± 197 · 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.

Land and farm parcels of 1 acre or more in Sonoma County: 459 parcel pages

About these numbersSources, county file October 2026

Assessed value

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

Assessed value $2,568,355 (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.

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: 018-141-012

Coordinates: 38.2961° N, 122.4503° W