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17939 Spring St, Sonoma, CA 95476 Property Records

Sonoma County property record for 17939 Spring St, Sonoma, CA 95476

Property Summary

Property TypeSingle Family Home
Details1 bd · 1 ba · 504 sqft · built 1942
Lot Size0.087 acres (3,800 sqft)
OwnerIndividual Name on Record
Last Sale$535,000 (Nov 2025)
Tax Bill$5,264 (2025)
Deeds & MortgagesNov 2025 Sale & Mortgage
Flood ZoneZone X (minimal risk)
APN056-373-025-000

Property Details

APN / Parcel Number

Primary APN056-373-025-000
Alternative APN
  • 056-373-025

Interior

Bedrooms1 Bed
Full Baths1 Bath
Total Rooms1 Room
Stories1 Story
Building Area504 sqft Living Area
Gross Area768 sqft
1st Floor Area504 sqft

Exterior

Year BuiltBuilt 1942
Effective Year BuiltEffective 2010
Architectural StyleCustom Design
Construction TypeWood
Lot Area3,800 sqft (0.087 acres)
Garage TypeAttached
Garage Area264 sqft
PorchPorch

Utilities, Heating & Cooling

Cooling SystemHVAC
Heating SystemFloor/Wall Furnace

Location & Zoning

Old Parcel Number056-373-025
Street Address17939 SPRING ST
CitySONOMA
StateCA
Zip95476-3486
Property CategoryResidential
Property TypeResidential > Single Family > Home
Legal Description69 FORM 23 C/W PT OF 15 PT TO PT OF 26 OR 2345-92
Legal SubdivisionBOYES SPRINGS HOTEL GROUNDS
Legal Block4
Legal Lot Number205
JurisdictionSONOMA CA
Township / Civil DivisionSONOMA
Census Block Group4
Census Block4006
Census Tract150305

Owner

Source: Sonoma County records, as of September 1, 2026

Owner names and exact recorded amounts shown locked on this page are available instantly with a free trial.

Owner of RecordIndividual Name on Record
Mailing Address17939 SPRING ST, SONOMA, CA 95476-3486
OccupancyOwner Occupied
Owner TypeIndividual
VestingSingle Man

Deeds, Mortgages & Sale History

Assessor's Deed Record

Deed NamesName on Deed
Last SaleNov 5, 2025 · Amount on Record
Deed SaleNov 5, 2025 · Amount on Record
Prior SaleFeb 19, 2025 · Amount on Record
Deed Document Number202556699
Prior Transfer DateDec 17, 2004
Prior Transfer Doc0000193674
Record UpdatedOct 29, 2026

November 2025: Deed, Transfer

Document TypeDeed
JurisdictionSONOMA CA
Recording DateNov 5, 2025
Property Address17939 SPRING ST, SONOMA, CA 95476-3486
Document Number0000056699
Map ReferenceMB 33 PG 19&20
Instrument DateNov 3, 2025
Instrument2025056699
Transaction TypeTransfer
Record UpdatedApr 2, 2026
Title CompanyTWFG NATIONAL TITLE INSURANCE COMPANY, WFG NATL TITLE INS COMPANY

Transaction

AmountAmount Recorded
DownpaymentDownpayment on Record
Loan-to-Value (LTV)LTV on Record
Tax$588.50
Amount AccuracyRounded by County
Additional
  • Arm's Length

Transferred From (Grantor/Seller)

NameVerified Name

Transferred To (Grantee/Buyer)

NameVerified Name
Address17939 SPRING ST, SONOMA, CA 95476-3486

Mortgage

Document Number0000056700
DateNov 5, 2025
Instrument2025056700
Lender
NameSYNERGY ONE LENDING
TypeMortgage Company
Agreement
TypeFHA Mortgage
AmountAmount Recorded
Term361 Months
DueDec 1, 2055

Tax Assessment & Valuation

Source: Sonoma County assessment roll, as of September 1, 2026

Property Jurisdictions

TypeName
StateCalifornia
CountySonoma County
Unified School DistrictSonoma Valley Unified School District (KG - 12)

Tax Bill & Assessment History

YearTax BillAssessed Value
2026$535,000 (+225.69%) Land $275,000 Building $260,000
2025$5,264.00 (+66.74%)$164,268 (+27.39%) Land $100,525 Building $63,743
2023$3,157.00 (+15.94%) Homeowner's exemption$128,950 Land $63,123 Building $65,827
2022$2,723.00

Assessed value and assessed market value are set for property tax purposes, not market price estimates; both are a fraction of this property's market value.

Flood

Source: FEMA National Flood Hazard Layer, effective February 15, 2026 · OpenFEMA NFIP redacted claims and policies, as of September 2026

FEMA Flood ZoneZone X
minimal risk
Flood Insurance RequirementNot required
lenders may require it
Community Rating SystemClass 10 (0% premium discount)
Nearby Flood Policies1 in force

Values are read at the parcel center point; flood claims are located to the census block group, not this parcel; lenders make the official flood determination.

Wildfire

Source: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024

Wildfire RiskLow
lower than 80% of the US · lower than 88% of California
Wildfire Likelihood0.01% annual chance
ExposureNone
beyond ember reach

Values cover an area roughly 900 ft across, not the parcel itself; insurers use their own ratings.

Drinking Water

Source: EPA Safe Drinking Water Information System, as of September 2026

Water SystemVALLEY OF THE MOON WATER DISTRICT
serves 23,140 people · EPA ID CA4910013
Water SourceGroundwater
Last State InspectionSep 2022
LeadUnder 1 ppb (2024–2026)
action level 15 ppb

Violations Reported to EPA

Water QualityNone
last 10 years
Treatment and ProcedureNone
last 10 years
Monitoring and ReportingNone
last 3 years

Results are for the whole water system, not water tested at this address; lead at the tap also depends on the building's own pipes.

Internet Providers

Source: FCC Broadband Data Collection, based on 711 locations within half a mile, as of December 31, 2025

ProviderMax Down / Up (Mbps)
Xfinity
Cable		2,000 / 250
T-Mobile
Fixed Wireless		100 / 20
AT&T
DSL · Fiber, Fixed Wireless in parts of the area		100 / 20

May also be available: Verizon.

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