423 Patten St, Sonoma, CA 95476 Property Records

Sonoma County property record for 423 Patten St, Sonoma, CA 95476

Property Summary

Property Type	Single Family Home
Details	3 bd · 2 ba · 1,493 sqft · built 1952
Lot Size	0.207 acres (9,000 sqft)
Owner	Company Name on Record
Last Sale	$775,000 (Apr 2013)
Tax Bill	$12,059 (2025)
Deeds & Mortgages	Feb 2022 Transfer Jan 2022 Transfer + 12 more
Flood Zone	Zone X (moderate risk)
APN	`018-321-013-000`

Property Details

APN / Parcel Number

Primary APN	`018-321-013-000`
Alternative APN	`018-321-013`

Interior

Bedrooms	3 Beds
Full Baths	2 Baths
Total Rooms	3 Rooms
Stories	1 Story
Building Area	1,493 sqft Living Area
1st Floor Area	1,493 sqft
Fireplaces	1 Fireplace
Fireplace	Fireplace

Exterior

Year Built	Built 1952
Effective Year Built	Effective 1995
Architectural Style	Custom Design
Construction Type	Wood
Lot Area	9,000 sqft (0.207 acres)
Garage Area	304 sqft
Porch	Porch

Utilities, Heating & Cooling

Cooling System	HVAC

Location & Zoning

Old Parcel Number	018-321-013
Street Address	423 PATTEN ST
City	SONOMA
State	CA
Zip	95476-6733
Property Category	Residential
Property Type	Residential > Single Family > Home
Local Zoning Code	R1
Legal Subdivision	SONOMA
Legal Block	3
Legal Lot Number	277
Jurisdiction	SONOMA CA
Township / Civil Division	SONOMA
Census Block Group	3
Census Block	3007
Census Tract	150204

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 Record	Company Name on Record
Mailing Address	423 PATTEN ST, SONOMA, CA 95476-6733
Occupancy	Owner Occupied
Owner Type	Company
Vesting	Trust

Deeds, Mortgages & Sale History

Date	Document
Feb 14, 2022	Intrafamily Transfer, Transfer ACCOMODATION, ACCOMMODATION
Jan 5, 2022	Intrafamily Transfer, Transfer
Jan 5, 2022	Intrafamily Transfer, Transfer
Feb 14, 2022	Intrafamily Transfer, Transfer · Line of Credit FIRST TECHNOLOGY FEDERAL CU
Feb 14, 2022	Intrafamily Transfer, Transfer WFG LENDER SERVICES
May 18, 2022	Intrafamily Transfer, Transfer
Nov 16, 2021	Deed of Trust, Mortgage · Conventional Mortgage FIRST TECHNOLOGY FEDERAL CU
Aug 11, 2017	Deed of Trust, Mortgage · Conventional Mortgage FIRST TECHNOLOGY FEDERAL CU
Oct 13, 2017	Deed of Trust, Mortgage · Line of Credit FIRST TECHNOLOGY FEDERAL CU
Apr 23, 2019	Deed of Trust, Mortgage · ARM FIRST TECHNOLOGY FEDERAL CU
May 16, 2019	Deed of Trust, Mortgage · Line of Credit FIRST TECHNOLOGY FEDERAL CU
Aug 23, 2019	Deed of Trust, Mortgage · ARM FIRST TECHNOLOGY FEDERAL CU
Oct 24, 2019	Deed of Trust, Mortgage · Line of Credit FIRST TECHNOLOGY FEDERAL CU
Nov 29, 2018	Affidavit of Death, Transfer ATTORNEY ONLY

Assessor's Deed Record

Deed Names	Name on Deed
Last Sale	Apr 30, 2013 · Amount on Record
Deed Sale	Apr 30, 2013 · Amount on Record
Deed Document Number	201344388
Prior Transfer Date	Oct 2, 1996
Prior Transfer Doc	0000090095
Record Updated	Oct 29, 2026

February 2022: Intrafamily Transfer, Transfer

Document Type	Intrafamily Transfer
Jurisdiction	SONOMA CA
Recording Date	Feb 14, 2022
Property Address	423 PATTEN ST, SONOMA, CA 95476-6733
Document Number	0000010493
Instrument Date	Jan 20, 2022
Instrument	2022010493
Transaction Type	Transfer
Record Updated	Feb 28, 2022
Title Company	ACCOMODATION, ACCOMMODATION

Transaction

Tax	$0.00
Amount Accuracy	Transfer Tax Exempt
Additional	Intrafamily Transfer

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	423 PATTEN ST, SONOMA, CA 95476-6733

January 2022: Intrafamily Transfer, Transfer

Document Type	Intrafamily Transfer
Jurisdiction	SONOMA CA
Recording Date	Jan 5, 2022
Property Address	423 PATTEN ST, SONOMA, CA 95476-6733
Document Number	0000000971
Instrument Date	Jan 3, 2022
Instrument	2022000971
Transaction Type	Transfer
Record Updated	Jan 21, 2022

Transaction

Tax	$0.00
Amount Accuracy	Transfer Tax Exempt
Additional	Intrafamily Transfer

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	423 PATTEN ST, SONOMA, CA 95476-6733

January 2022: Intrafamily Transfer, Transfer

Document Type	Intrafamily Transfer
Jurisdiction	SONOMA CA
Recording Date	Jan 5, 2022
Property Address	423 PATTEN ST, SONOMA, CA 95476-6733
Document Number	0000000970
Instrument Date	Jan 3, 2022
Instrument	2022000970
Transaction Type	Transfer
Record Updated	Jan 21, 2022

Transaction

Tax	$0.00
Amount Accuracy	Transfer Tax Exempt
Additional	Intrafamily Transfer

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	423 PATTEN ST, SONOMA, CA 95476-6733

February 2022: Intrafamily Transfer, Transfer

Document Type	Intrafamily Transfer
Jurisdiction	SONOMA CA
Recording Date	Feb 14, 2022
Property Address	423 PATTEN ST, SONOMA, CA 95476-6733
Document Number	0000010494
Instrument Date	Jan 3, 2022
Instrument	2022010494
Transaction Type	Transfer
Record Updated	Feb 28, 2022
Title Company	WFG LENDER SERVICES

Transaction

Tax	$0.00
Amount Accuracy	Transfer Tax Exempt
Additional	Intrafamily Transfer

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	423 PATTEN ST, SONOMA, CA 95476-6733

Mortgage

Document Number	0000010495
Date	Feb 14, 2022
Instrument	2022010495

Lender

Name	FIRST TECHNOLOGY FEDERAL CU
Type	Credit Union

Agreement

Type	Line of Credit
Amount	Amount Recorded
Term	299 Months
Due	Jan 25, 2047

Interest

Rate Type	Adjustable Rate
Change Frequency	Monthly

February 2022: Intrafamily Transfer, Transfer

Document Type	Intrafamily Transfer
Jurisdiction	SONOMA CA
Recording Date	Feb 14, 2022
Property Address	423 PATTEN ST, SONOMA, CA 95476-6733
Document Number	0000010492
Instrument Date	Jan 3, 2022
Instrument	2022010492
Transaction Type	Transfer
Record Updated	Feb 28, 2022
Title Company	WFG LENDER SERVICES

Transaction

Tax	$0.00
Amount Accuracy	Transfer Tax Exempt
Additional	Intrafamily Transfer

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	423 PATTEN ST, SONOMA, CA 95476-6733

May 2022: Intrafamily Transfer, Transfer

Document Type	Intrafamily Transfer
Jurisdiction	SONOMA CA
Recording Date	May 18, 2022
Property Address	423 PATTEN ST, SONOMA, CA 95476-6733
Document Number	0000035159
Instrument Date	Jan 3, 2022
Instrument	2022035159
Transaction Type	Transfer
Record Updated	Jun 7, 2023

Transaction

Tax	$0.00
Amount Accuracy	Transfer Tax Exempt
Additional	Intrafamily Transfer

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Family Trust
Address	423 PATTEN ST, SONOMA, CA 95476-6733

November 2021: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	SONOMA CA
Property Address	423 PATTEN ST, SONOMA, CA 95476-6733
Transaction Type	Mortgage
Record Updated	Dec 1, 2021
Title Company	WFG LENDER SERVICES, WFG LENDER SERVICES RESWARE

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	423 PATTEN ST, SONOMA, CA 95476-6733

Mortgage

Document Number	0000123980
Date	Nov 16, 2021
Instrument	2021123980

Lender

Name	FIRST TECHNOLOGY FEDERAL CU
Type	Credit Union
Address	HILLSBORO, OR 97124

Agreement

Type	Conventional Mortgage
Amount	Amount Recorded
Term	361 Months
Due	Dec 1, 2051

August 2017: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	SONOMA CA
Property Address	423 PATTEN ST, SONOMA, CA 95476-6733
Transaction Type	Mortgage
Record Updated	Feb 5, 2021
Title Company	FIRST AMERICAN TITLE COMPANY

Transferred To (Grantee/Buyer)

Name	Verified Name

Mortgage

Document Number	0000062502
Date	Aug 11, 2017
Instrument	2017062502

Lender

Name	FIRST TECHNOLOGY FEDERAL CU
Type	Credit Union
Address	BEAVERTON, OR 97006

Agreement

Type	Conventional Mortgage
Amount	Amount Recorded
Term	361 Months
Due	Sep 1, 2047

Interest

Rate Type	Fixed Rate
Rate	3.75%
Type Change Date	Sep 1, 2027
Change Frequency	Annually
Min Rate At Change	2.62%
Max Rate At Change	8.75%
Index	1-Year CMT
Max Rate	8.75%

October 2017: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	SONOMA CA
Property Address	423 PATTEN ST, SONOMA, CA 95476-6733
Transaction Type	Mortgage
Record Updated	Feb 5, 2021
Title Company	WFG LENDER SERVICES

Transferred To (Grantee/Buyer)

Name	Verified Name

Mortgage

Document Number	0000079549
Date	Oct 13, 2017
Instrument	2017079549

Lender

Name	FIRST TECHNOLOGY FEDERAL CU
Type	Credit Union
Address	BEAVERTON, OR 97006

Agreement

Type	Line of Credit
Amount	Amount Recorded
Term	300 Months
Due	Oct 12, 2042

Interest

Rate Type	Adjustable Rate
Change Frequency	Monthly

April 2019: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	SONOMA CA
Property Address	423 PATTEN ST, SONOMA, CA 95476-6733
Transaction Type	Mortgage
Record Updated	Feb 5, 2021
Title Company	FIRST AMERICAN TITLE INS CO

Transferred To (Grantee/Buyer)

Name	Verified Name

Mortgage

Document Number	0000026592
Date	Apr 23, 2019
Instrument	2019026592

Lender

Name	FIRST TECHNOLOGY FEDERAL CU
Type	Credit Union
Address	HILLSBORO, OR 97124

Agreement

Type	ARM
Amount	Amount Recorded
Term	360 Months
Due	Apr 1, 2049

Interest

Rate Type	Adjustable Rate
Rate	4%
Adjustable	Adjustable Rate Rider
Type Change Date	Apr 1, 2024
Change Frequency	5 Years
Min Rate At Change	2%
Max Rate At Change	6%
Index	5-Year CMT
Max Rate	9%

May 2019: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	SONOMA CA
Property Address	423 PATTEN ST, SONOMA, CA 95476-6733
Transaction Type	Mortgage
Record Updated	Feb 5, 2021
Title Company	WFG LENDER SERVICES

Transferred To (Grantee/Buyer)

Name	Verified Name

Mortgage

Document Number	0000032519
Date	May 16, 2019
Instrument	2019032519

Lender

Name	FIRST TECHNOLOGY FEDERAL CU
Type	Credit Union
Address	HILLSBORO, OR 97124

Agreement

Type	Line of Credit
Amount	Amount Recorded
Term	300 Months
Due	May 15, 2044

Interest

Rate Type	Adjustable Rate
Change Frequency	Monthly

August 2019: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	SONOMA CA
Property Address	423 PATTEN ST, SONOMA, CA 95476-6733
Transaction Type	Mortgage
Record Updated	Feb 5, 2021
Title Company	FIRST AMERICAN TITLE INS CO

Transferred To (Grantee/Buyer)

Name	Verified Name

Mortgage

Document Number	0000058786
Date	Aug 23, 2019
Instrument	2019058786

Lender

Name	FIRST TECHNOLOGY FEDERAL CU
Type	Credit Union
Address	HILLSBORO, OR 97124

Agreement

Type	ARM
Amount	Amount Recorded
Term	360 Months
Due	Aug 1, 2049

Interest

Rate Type	Adjustable Rate
Rate	3.37%
Adjustable	Adjustable Rate Rider
Type Change Date	Aug 1, 2024
Change Frequency	5 Years
Min Rate At Change	1.75%
Max Rate At Change	5.37%
Index	5-Year CMT
Max Rate	8.37%

October 2019: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	SONOMA CA
Property Address	423 PATTEN ST, SONOMA, CA 95476-6733
Transaction Type	Mortgage
Record Updated	Feb 5, 2021
Title Company	WFG LENDER SERVICES RESWARE

Transferred To (Grantee/Buyer)

Name	Verified Name

Mortgage

Document Number	0000077871
Date	Oct 24, 2019
Instrument	2019077871

Lender

Name	FIRST TECHNOLOGY FEDERAL CU
Type	Credit Union
Address	HILLSBORO, OR 97124

Agreement

Type	Line of Credit
Amount	Amount Recorded
Term	300 Months
Due	Oct 23, 2044

Interest

Rate Type	Adjustable Rate
Change Frequency	Monthly

November 2018: Affidavit of Death, Transfer

Document Type	Affidavit of Death
Jurisdiction	SONOMA CA
Recording Date	Nov 29, 2018
Property Address	423 PATTEN ST, SONOMA, CA 95476-6733
Document Number	0000081728
Instrument Date	Nov 21, 2018
Instrument	81728
Transaction Type	Transfer
Record Updated	Mar 26, 2020
Title Company	ATTORNEY ONLY

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Personal Trust
Address	423 PATTEN ST SONOMA CA 954766733, SONOMA, CA 95476-6733
Investor	Possibly a Property Investor

Tax Assessment & Valuation

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

Property Jurisdictions

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

Tax Bill & Assessment History

Year	Tax Bill	Assessed Value
2026		$969,411 (+2%) Land $602,900 Building $366,511
2025	$12,059.00 (+4.54%) Homeowner's exemption	$950,404 (+4.04%) Land $591,079 Building $359,325
2023	$11,535.00 (+1.5%)	$913,501 Land $568,128 Building $345,373
2022	$11,364.00

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

Flood

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 moderate risk
500-Year Floodplain	Yes 0.2% annual chance
Flood Insurance Requirement	Not required lenders may require it
Community Rating System	Class 10 (0% premium discount)
Nearby Flood Policies	3 in force
Nearby Flood Claims	1 (1998)
Claims Outside the SFHA	1 of 1
Most Recent Claim	Jan 1998 · rainfall accumulation

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 Risk	Low lower than 80% of the US · lower than 88% of California
Wildfire Likelihood	0.01% 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	CITY OF SONOMA serves 10,619 people · EPA ID CA4910012
Water Source	Groundwater
Last State Inspection	Jul 2024
Lead	Under 1 ppb (2021–2023) action level 15 ppb

Violations Reported to EPA

Water Quality	None last 10 years
Treatment and Procedure	None last 10 years
Monitoring and Reporting	1 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 540 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 · Fiber, Fixed Wireless in parts of the area	100 / 20

May also be available: T-Mobile.

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