1850 Thornsberry Rd, Sonoma, CA 95476 Property Records

Sonoma County property record for 1850 Thornsberry Rd, Sonoma, CA 95476

Property Summary

Property Type	Single Family Home
Details	3 bd · 3.5 ba · 3,605 sqft · built 2018
Lot Size	0.735 acres (32,000 sqft)
Owner	2 Individual Names on File
Last Sale	$555,000 (May 2021)
Tax Bill	$28,171 (2025)
Deeds & Mortgages	May 2021 Sale & Mortgage Mar 2018 Construction Loan + 1 more
Flood Zone	Zone X (minimal risk)
APN	`127-192-045-000`

Property Details

APN / Parcel Number

Primary APN	`127-192-045-000`
Alternative APN	`127-192-045`

Interior

Bedrooms	3 Beds
Full Baths	3.5 Baths
Half Baths	1 Half Bath
Total Rooms	5 Rooms
Stories	2 Stories
Building Area	3,605 sqft Living Area
Gross Area	4,415 sqft
1st Floor Area	1,355 sqft
Fireplaces	1 Fireplace
Fireplace	Fireplace

Exterior

Year Built	Built 2018
Effective Year Built	Effective 2018
Construction Type	Wood
Lot Area	32,000 sqft (0.735 acres)
Garage Type	Attached
Garage Area	810 sqft
Parking Spaces	3 Parking Spaces

Utilities, Heating & Cooling

Cooling System	None

Location & Zoning

Old Parcel Number	127-192-045
Street Address	1850 THORNSBERRY RD
City	SONOMA
State	CA
Zip	95476-4819
Property Category	Residential
Property Type	Residential > Single Family > Home
Legal Description	74 FORM PT OF 127-192-11 M/D
Legal Subdivision	PARCEL MAP NO 4177
Legal Block	1
Legal Lot Number	2
Jurisdiction	SONOMA CA
Township / Civil Division	SONOMA
Census Block Group	1
Census Block	1004
Census Tract	150100

Owner

1850 Thornsberry Rd is owned and occupied by two individuals who bought it in May 2021.

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

Owner of Record	2 Individual Names on File
Mailing Address	1850 THORNSBERRY RD, SONOMA, CA 95476-4819
Occupancy	Owner Occupied
Owner Type	Individual

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

Date	Document
May 14, 2021	Grant Deed, Transfer · Conventional Mortgage FIRST REPUBLIC BANK
Mar 16, 2018	Trustee's Deed, Construction Loan · Construction Mortgage FIRST REPUBLIC BK
Mar 8, 2018	Quit Claim Deed, Transfer FIRST AMERICAN TITLE

Assessor's Deed Record

Deed Names	2 Names on Deed
Last Sale	May 14, 2021 · Amount on File
Deed Sale	May 14, 2021 · Amount on File
Prior Sale	Nov 6, 2015 · Amount on File
Deed Document Number	202159069
Prior Transfer Date	Jun 21, 2001
Prior Transfer Doc	0000086749
Record Updated	Oct 29, 2026

May 2021: Grant Deed, Transfer

Document Type	Grant Deed
Jurisdiction	SONOMA CA
Recording Date	May 14, 2021
Property Address	1850 THORNSBERRY RD, SONOMA, CA 95476-4819
Document Number	0000059069
Map Reference	MB 203 PG 24
Instrument Date	May 4, 2021
Instrument	2021059069
Transaction Type	Transfer
Record Updated	Jul 25, 2022
Title Company	CHICAGO TITLE COMPANY

Transaction

Amount	Amount on Record
Tax	$610.50
Amount Accuracy	Rounded by County
Additional	Arm's Length

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Joint Tenants
Address	1850 THORNSBERRY RD, SONOMA, CA 95476-4819

Mortgage

Document Number	0000059070
Date	May 14, 2021
Instrument	2021059070

Lender

Name	FIRST REPUBLIC BANK
Type	Bank

Agreement

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

Mortgage

Document Number	0000059071
Date	May 14, 2021
Instrument	2021059071

Lender

Name	FIRST REPUBLIC BANK
Type	Bank
Address	SAN FRANCISCO, CA 94111

Agreement

Type	Line of Credit
Amount	Amount on Record
Term	300 Months
Due	May 26, 2046

Interest

Rate Type	Adjustable Rate
Change Frequency	Monthly

March 2018: Trustee's Deed, Construction Loan

Document Type	Trustee's Deed
Jurisdiction	SONOMA CA
Recording Date	Mar 16, 2018
Property Address	1850 THORNSBERRY RD, SONOMA, CA 95476-4819
Instrument Date	Mar 9, 2018
Instrument	18281
Transaction Type	Construction Loan
Record Updated	Nov 22, 2018
Title Company	FIDELITY NATIONAL TITLE, FIDELITY NATIONAL TITLE CO

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Separate Estate/Property
Address	431 2ND ST SONOMA CA 95476, SONOMA, CA 95476

Mortgage

Document Number	0000018281
Date	Mar 16, 2018
Instrument	18281

Lender

Name	FIRST REPUBLIC BK
Type	Bank
Address	111 PINE ST, SAN FRANCISCO, CA 94111-5602

Agreement

Type	Construction Mortgage
Amount	Amount on Record
Term	360 Months
Due	Mar 15, 2048

Interest

Rate Type	Adjustable Rate

March 2018: Quit Claim Deed, Transfer

Document Type	Quit Claim Deed
Jurisdiction	SONOMA CA
Recording Date	Mar 8, 2018
Property Address	1850 THORNSBERRY RD, SONOMA, CA 95476-4819
Document Number	0000016026
Instrument Date	Mar 7, 2018
Instrument	16026
Transaction Type	Transfer
Record Updated	Mar 23, 2018
Title Company	FIRST AMERICAN TITLE

Transaction

Tax	$0.00
Additional	Quitclaim Intrafamily Transfer

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Separate Estate/Property
Address	620 BROADWAY SONOMA CA 954767002, SONOMA, CA 95476-7002

Tax Assessment & Valuation

The 2025 property tax bill for 1850 Thornsberry Rd was $28,171 with a homeowner's exemption.

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		$2,607,467 (+5.72%) Land $603,733 Building $2,003,734
2025	$28,171.00 Homeowner's exemption	$2,466,342 Land $591,896 Building $1,874,446
2023	$27,143.00 (+5.12%) Homeowner's exemption	$2,370,573 Land $568,913 Building $1,801,660
2022	$25,821.00

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

Flood

FEMA maps place 1850 Thornsberry Rd in Zone X, an area of minimal flood risk, though there have been 9 flood claims nearby since 1994.

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
Flood Insurance Requirement	Not required lenders may require it
Flood Insurance Cost	Premium on File median of 10 policies
Community Rating System	Class 10 (0% premium discount)
Nearby Flood Policies	10 in force
Nearby Flood Claims	9 (1994–2019)
Claims Outside the SFHA	4 of 9
Most Recent Claim	Feb 2019 · Severe Winter Storms, Flooding, Landslides, And Mudslides
Claims by Event	Severe Storms, Flooding, Mudslides, And Landslides, Dec 2005 · 4 claims Severe Winter Storms, Flooding, Landslides, Mud Flows, Jan 1995 · 2 claims

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 1850 Thornsberry Rd is moderate, ranking above 40% of the US, with a 0.07% annual chance of wildfire.

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

Wildfire Risk	Moderate above 40% of the US · lower than 76% of California
Wildfire Likelihood	0.07% annual chance
Exposure	Direct burnable vegetation

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

Internet Providers

Source: FCC Broadband Data Collection, based on 137 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
AT&T DSL	100 / 20

Cell Coverage

5G (outdoors only) and 4G LTE

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