456 Patten St, Sonoma, CA 95476 Property Records

Sonoma County property record for 456 Patten St, Sonoma, CA 95476

Property Summary

Property Type	Single Family Home
Details	3 bd · 3 ba · 2,196 sqft · built 1938
Lot Size	0.241 acres (10,500 sqft)
Owner	2 Individual Names on Record
Last Sale	$1,149,500 (Nov 2013)
Tax Bill	$18,840 (2025)
Deeds & Mortgages	Jun 2020 Transfer Jun 2020 Mortgage + 1 more
Flood Zone	Zone X (moderate risk)
APN	`018-273-027-000`

Property Details

APN / Parcel Number

Primary APN	`018-273-027-000`
Alternative APN	`018-273-027`

Interior

Bedrooms	3 Beds
Full Baths	3 Baths
Total Rooms	3 Rooms
Stories	2 Stories
Building Area	2,196 sqft Living Area
1st Floor Area	1,558 sqft

Exterior

Year Built	Built 1938
Effective Year Built	Effective 1994
Architectural Style	Custom Design
Construction Type	Wood
Lot Area	10,500 sqft (0.241 acres)
Garage Type	Detached
Garage Area	308 sqft
Parking Spaces	1 Parking Space

Utilities, Heating & Cooling

Cooling System	HVAC

Location & Zoning

Old Parcel Number	018-273-027
Street Address	456 PATTEN ST
City	SONOMA
State	CA
Zip	95476-6734
Property Category	Residential
Property Type	Residential > Single Family > Home
Local Zoning Code	R1
Legal Description	BUSINESS CODE: D1
Legal Subdivision	MAP OF PICETTI TERRACE
Legal Block	3
Legal Lot Number	11
Jurisdiction	SONOMA CA
Township / Civil Division	SONOMA
Census Block Group	3
Census Block	3006
Census Tract	150204

Historic Designation

Source: NPS National Register of Historic Places, as of August 1, 2026

Historic District	Within the Sonoma Plaza listed 1975 · 31 contributing resources · National Historic Landmark (designated 1960) · NRIS 75000489

Federal listing alone does not restrict alterations; local historic district rules, which this data does not cover, may apply.

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	2 Individual Names on Record
Mailing Address	456 PATTEN ST, SONOMA, CA 95476-6734
Occupancy	Owner Occupied
Owner Type	Individual

Deeds, Mortgages & Sale History

Date	Document
Jun 19, 2020	Quit Claim Deed, Transfer OLD REPUBLIC TITLE
Jun 19, 2020	Quit Claim Deed, Transfer QUICKEN LNS
Jun 19, 2020	Quit Claim Deed, Transfer OLD REPUBLIC TITLE

Assessor's Deed Record

Deed Names	2 Names on Deed
Last Sale	Nov 25, 2013 · Amount on Record
Deed Sale	Nov 25, 2013 · Amount on Record
Prior Sale	Dec 18, 2001 · Amount on Record
Deed Document Number	2013112230
Last Transfer Date	Jun 15, 2020
Transfer Doc	0000048833
Record Updated	Oct 29, 2026

June 2020: Quit Claim Deed, Transfer

Document Type	Quit Claim Deed
Jurisdiction	SONOMA CA
Recording Date	Jun 19, 2020
Property Address	456 PATTEN ST, SONOMA, CA 95476-6734
Document Number	0000048836
Instrument Date	Jun 15, 2020
Instrument	48836
Transaction Type	Transfer
Record Updated	Jul 10, 2020
Title Company	OLD REPUBLIC TITLE

Transaction

Tax	$0.00
Additional	Quitclaim Intrafamily Transfer

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Tenants in Common
Address	456 PATTEN ST SONOMA CA 954766734, SONOMA, CA 95476-6734

June 2020: Quit Claim Deed, Transfer

Document Type	Quit Claim Deed
Jurisdiction	SONOMA CA
Recording Date	Jun 19, 2020
Property Address	456 PATTEN ST, SONOMA, CA 95476-6734
Document Number	0000048834
Instrument Date	Jun 15, 2020
Instrument	48834
Transaction Type	Transfer
Record Updated	Jul 10, 2020
Title Company	OLD REPUBLIC 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	456 PATTEN ST SONOMA CA 954766734, SONOMA, CA 95476-6734

Mortgage

Document Number	48835
Date	Jun 19, 2020
Instrument	48835

Lender

Name	QUICKEN LNS
Type	Funding / Finance Company
Address	DETROIT, MI 48226-1906

Agreement

Amount	Amount Recorded
Term	360 Months
Due	Jun 18, 2050

June 2020: Quit Claim Deed, Transfer

Document Type	Quit Claim Deed
Jurisdiction	SONOMA CA
Recording Date	Jun 19, 2020
Property Address	456 PATTEN ST, SONOMA, CA 95476-6734
Document Number	0000048833
Instrument Date	Jun 15, 2020
Instrument	48833
Transaction Type	Transfer
Record Updated	Jul 10, 2020
Title Company	OLD REPUBLIC TITLE

Transaction

Tax	$0.00
Additional	Quitclaim Intrafamily Transfer

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Tenants in Common
Address	456 PATTEN ST SONOMA CA 954766734, SONOMA, CA 95476-6734

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		$1,497,000 (+2%) Land $812,741 Building $684,259
2025	$18,840.00 (+4.57%)	$1,467,648 (+4.04%) Land $796,805 Building $670,843
2023	$18,017.00 (+1.13%)	$1,410,660 Land $765,865 Building $644,795
2022	$17,815.00

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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