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6.28 acres of farmland in Sonoma County

700 Curtin Ln, Sonoma, CA · Parcel 018-550-014

County file October 2026

  • Home5,154 sq ftLiving area of all buildings on the parcel
  • Acres6.28
  • Land typeFarm and timber
  • ZoningR-OHousing opportunity (15-20 d.u./acre)
  • Future land useSonoma ResidentialHigh density residential (state class)
  • Flood zoneEdge of flood zone AE (5%)The rest: X (95%)
  • Wetlands2% of the parcel
  • Assessed value (county)$257kProp. 13 value, not a market price
  • 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 frontage121 ft on 7th St W
  • 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 6 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 53–80 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 176 ft (middle half 116–325 ft)99 household well logs within 1 mi, drilled 1951–2025; water level 30 ft below ground (California DWR well completion reports). Area figures, not this parcel
  • Public land nearbyScwa, 0.4 miRegional Water Districts, open with restrictions (permit or registration), 780 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 classFarmland of statewide importanceMap unit Huichica loam, 2 to 9 percent slopes, about 57% of the parcel · USDA NRCS soil survey (SSURGO), survey area CA097, version Sep 2026
  • Crop productivity (NCCPI)0.51 of 1National Commodity Crop Productivity Index 3.0 of the main soil, Huichica; higher is more productive for non-irrigated commodity crops · USDA NRCS soil survey (SSURGO), version Sep 2026
  • Land capability classClass 3e of 8: severe limits for crops (erosion)Non-irrigated, Huichica; 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.

  • Crop history (CDL)2025 grapes · 2024 grapes · 2023 developed (low intensity) · 2022 developed (low intensity) · 2021 developed (low intensity)the most common class in the 90 m around the parcel's map point, from satellite imagery; a classification, not a farm record · USDA NASS Cropland Data Layer 2021–2025
  • Hydric soils8% of the parcelShare 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 parcels4.3%in a FEMA flood zone4,787parcels on the roll

Home facts

County of Sonoma · as of Oct 2026

Bedrooms
4 (all buildings)
Bathrooms
2 (all buildings)
Living area
5,154 sq ft, all buildings
Year built
Not in this county's published parcel file
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: $256,699 ($118,638 land, $138,061 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)

  • $256,6992026 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-O (Sonoma's own code), state class “Multi-family”. 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 planSonoma Residential (Sonoma's own designation), state class “High density residential”. As of Q1 2022.LCI California General Plan Land Use · Q1 2022

ADU

  • Accessory dwelling unitsOn a lot with multifamily housing, state ADU law (Gov. Code 66323) allows ADUs in existing non-living space (at least one, up to a quarter of the units) and detached ADUs, subject to local standards. Check the City of Sonoma.HCD ADU Handbook (March 2026); Gov. Code 66310-66342

Housing

  • SB 35 / SB 423 streamliningSonoma'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
  • Opportunity mapCTCAC/HCD opportunity area: Low Resource (used for tax-credit housing).CTCAC/HCD Opportunity Map 2026 · 2025-12

Fire

  • Fire Hazard Severity ZoneIn a mapped Moderate 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. The Moderate zone covers about 7% of the parcel. The parcel's centre is outside the mapped zones.CAL FIRE Fire Hazard Severity Zones · SRA Apr 1, 2024; LRA Mar 24, 2025 · Official map

Groundwater

  • Groundwater basin: NAPA-SONOMA VALLEY - SONOMA VALLEY (2-002.02); SGMA priority High; groundwater agency: Sonoma Valley GSA.DWR Bulletin 118 (2025), SGMA basin priority (2019), Groundwater Sustainability Agencies · B118 2025; SGMA priority 2019; GSA layer read Oct 11, 2026 · Official map

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
  • Conservation easementNone 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
  • Historic propertyCheck with the City of Sonoma: no statewide layer lists historic landmarks and districts.No statewide layer
  • Tenants and rent controlCheck with the City of Sonoma: tenancy and rent control are not in any public map.Not in public data

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.

California Department of Water Resources (DWR), SGMA 2019 basin prioritization. DWR's basin priority under the Sustainable Groundwater Management Act; well rules are set by the local groundwater agency and county.

Hazards

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

Riverine flooding
Very High
Earthquake
Relatively High
Wildfire
Relatively Low
Heat wave
Relatively Low
Drought
Relatively Low
Strong wind
Very Low
Landslide
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
Fewer than 10In this census tract

Neighborhood (Census)

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

Median household income
$75,417± $34,351 · this block group
Median home value (owner-reported)
$989,700± $115,365 · census tract (block group sample too small)
Median rent (gross)
$1,477± $703 · this block group
Homes lived in by their owners
67%± 16 pts · this block group
Median year homes were built
1975± 4 yr · this block group
Average commute (one way)
30 min± 9 min · census tract (not published for block groups)
Population
1,979± 647 · 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 $256,699 (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: 018-550-014

Coordinates: 38.2904° N, 122.4736° W