331 W Thomson Ave, Sonoma, CA 95476 Property Records

Sonoma County property record for 331 W Thomson Ave, Sonoma, CA 95476

Property Summary

Property Type	Planned Unit Development
Details	2 bd · 1 ba · 760 sqft · built 1985
Lot Size	2.29 acres (1 sqft)
Owner	Individual Name on File
Last Sale	$498,500 (Aug 2024)
Tax Bill	$7,325 (2025)
Deeds & Mortgages	Jul 2021 Mortgage
Flood Zone	Zone X (minimal risk)
APN	`056-680-021-000`

Property Details

APN / Parcel Number

Primary APN	`056-680-021-000`
Alternative APN	`056-680-021`

Interior

Bedrooms	2 Beds
Full Baths	1 Bath
Total Rooms	2 Rooms
Stories	1 Story
Building Area	760 sqft Living Area
1st Floor Area	760 sqft
Fireplaces	1 Fireplace
Fireplace	Fireplace

Exterior

Year Built	Built 1985
Effective Year Built	Effective 2008
Architectural Style	Custom Design
Construction Type	Wood
Lot Area	1 sqft

Utilities, Heating & Cooling

Cooling System	None

Location & Zoning

Old Parcel Number	056-680-021
Street Address	331 W THOMSON AVE
City	SONOMA
State	CA
Zip	95476-4366
Property Category	Residential
Property Type	Residential > Condominium / Townhouse > Planned Unit Development
Local Zoning Code	R15UA
Legal Description	MAP 357 PG 49 LOT 16
Legal Subdivision	DEER CREEK ESTATES UNIT #2
Legal Block	2
Legal Lot Number	16
Jurisdiction	SONOMA CA
Township / Civil Division	SONOMA
Census Block Group	2
Census Block	2000
Census Tract	150305

Owner

331 W Thomson Ave, a planned unit development, is owned and occupied by an individual who bought it in August 2024.

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

Owner of Record	Individual Name on File
Mailing Address	331 W THOMSON AVE, SONOMA, CA 95476-4366
Occupancy	Owner Occupied
Owner Type	Individual
Vesting	Single Woman

Owner names and exact recorded amounts are on file and can be viewed instantly on this page with a free 10-day trial.

Deeds, Mortgages & Sale History

Assessor's Deed Record

Deed Names	Name on Deed
Last Sale	Aug 6, 2024 · Amount on File
Deed Sale	Aug 6, 2024 · Amount on File
Prior Sale	Apr 6, 2004 · Amount on File
Deed Document Number	202435517
Record Updated	Oct 29, 2026

July 2021: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	SONOMA CA
Property Address	331 W THOMSON AVE, SONOMA, CA 95476-4366
Transaction Type	Mortgage
Record Updated	Aug 12, 2021
Title Company	FIRST AMERICAN TITLE

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	331 W THOMSON AVE, SONOMA, CA 95476-4366

Mortgage

Document Number	0000085408
Date	Jul 27, 2021
Instrument	2021085408

Lender

Name	GUARANTEED RATE INC
Type	Mortgage Company
Address	CHICAGO, IL 60613

Agreement

Type	Conventional Mortgage
Amount	Amount on Record
Term	361 Months
Due	Aug 1, 2051

Tax Assessment & Valuation

The 2025 property tax bill for 331 W Thomson Ave was $7,325.

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

Property Jurisdictions

Type	Name
State	California
County	Sonoma County
Unified School District	Sonoma Valley Unified School District (KG - 12)

Tax Bill & Assessment History

Year	Tax Bill	Assessed Value
2026		$508,470 (+2%) Land $244,800 Building $263,670
2025	$7,325.00	$498,500 Land $240,000 Building $258,500
2023	$5,915.00 (+2.34%) Homeowner's exemption	$396,293 Land $170,815 Building $225,478
2022	$5,780.00

Assessed value is set for property tax purposes and is not a market price estimate.

Flood

FEMA maps place 331 W Thomson Ave in Zone X, an area of minimal flood risk, within 100 ft of a high-risk flood zone.

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

FEMA Flood Zone	Zone X minimal risk
Nearest Special Flood Hazard Area	Zone AE, within 100 ft
Flood Insurance Requirement	Not required lenders may require it
Community Rating System	Class 10 (0% premium discount)
Nearby Flood Policies	2 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

Wildfire risk around 331 W Thomson Ave is low, with a 0.02% annual chance of wildfire.

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

Wildfire Risk	Low lower than 80% of the US · lower than 88% of California
Wildfire Likelihood	0.02% annual chance
Exposure	None 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 System	VALLEY OF THE MOON WATER DISTRICT serves 23,140 people · EPA ID CA4910013
Water Source	Groundwater
Last State Inspection	Sep 2022
Lead	Under 1 ppb (2024–2026) action level 15 ppb

Violations Reported to EPA

Water Quality	None last 10 years
Treatment and Procedure	None last 10 years
Monitoring and Reporting	None 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 625 locations within half a mile, as of December 31, 2025

Provider	Max Down / Up (Mbps)
Xfinity Cable	2,000 / 250
Verizon Fixed Wireless	300 / 20
T-Mobile Fixed Wireless	100 / 20
AT&T DSL · Fiber in parts of the area	100 / 20