421 Sonnet Ct, Oakley, CA 94561 Property Records

Contra Costa County property record for 421 Sonnet Ct, Oakley, CA 94561 · Last verified July 2026

Property Highlights

Property Type	Residential > Single Family > Home
Bedrooms	5 Beds
Bathrooms	4 Baths
Year Built	Built 2014
Square Footage	3,644 sqft Living Area
Lot Size	6,448 sqft (0.148 acres)
Occupancy	Owner Occupied
Last Sale	$75,000 (2025)
Tax Bill	$11,225.00 (2025)

Property Details

APN / Parcel Number

Primary APN	`032-490-019`
Alternative APN	`032-490-019-0`

Interior

Bedrooms	5 Beds
Full Baths	4 Baths
Total Rooms	14 Rooms
Building Area	3,644 sqft Living Area
1st Floor	1,505 sqft 1st Floor
2nd Floor	2,139 sqft 2nd Floor
Stories	2 Stories

Exterior

Year Built	Built 2014
Effective Year Built	Effective 2014
Architectural Style	Cluster Style
Lot Area	6,448 sqft (0.148 acres)
Parking Spaces	3 Parking Spaces
Garage Type	Attached Garage
Garage Area	775 sqft Garage

Location & Zoning

Street Address	421 SONNET CT
City	OAKLEY
State	CA
Zip	94561-5087
Property Usage	Residential Property Usage
Type	Residential > Single Family > Home
Legal Description	T8955 L288
Legal Subdivision	8955 SUMMER LAKE, PH 2
Legal Tract	8955
Legal Lot Number	288
Jurisdiction	CONTRA COSTA CA
Minor Civil Division	EAST CONTRA COSTA
Census Blockgroup	3
Census Block	3025
Census Tract	301000

Owner

Source: Contra Costa County records · APN 032-490-019

Assessment roll updated July 14, 2026 · Last verified July 2026

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

Owner of Record	Individual Name on File
Mailing Address	421 SONNET CT, OAKLEY, CA 94561-5087
Occupancy	Owner Occupied
Owner Type	Owner is an Individual, Couple or Unincorporated Entity

Deeds, Mortgages & Sale History

Assessor's Deed Record

Deed Names	Verified Name on Deed
Last Sale	Dec 23, 2025 · Amount on Record
Deed Sale	Dec 23, 2025 · Amount on Record
Prior Sale	Sep 22, 2014 · Amount on Record
Deed Doc Number	2025142830
Prior Transfer Date	Aug 20, 2025
Prior Transfer Doc	0000142830
Record Refreshed	Sep 20, 2026

December 2025: Grant Deed, Transfer

Document Type	Grant Deed
Jurisdiction	CONTRA COSTA CA
Recording Date	Dec 23, 2025
Property Address	421 SONNET CT, OAKLEY, CA 94561-5087
Document Number	0000142830
Map Reference	MB 490 PG 31
Instrument Date	Aug 20, 2025
Instrument	2025- 142830
Transaction Type	Transfer
Record Updated	Jan 01, 2026
Title Company	CHICAGO TITLE COMPANY

Transaction

Amount	Amount Recorded
Tax	$0.00
Amount Accuracy	Rounded Values by County

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	421 SONNET CT, OAKLEY, CA 94561-5087

Mortgage

Document Number	0000142831
Date	Dec 23, 2025
Instrument	2025- 142831

Lender

Name	KAIPERM FCU
Type	Credit Union

Agreement

Type	Line of Credit
Amount	Amount Recorded
Term	300 Months
Due	Dec 10, 2050

Interest

Rate Type	Adjustable Rate
Rate	7%
Adjustable	Document includes a rider for adjustable-rate mortgage with a specific rate change date.
Change Frequency	Monthly (Revolving credit lines are monthly unless stated otherwise).
Min Rate At Change	4%
Max Rate At Change	18%
Index	Other

Tax Assessment & Valuation

Source: Contra Costa County records · Assessment roll updated July 14, 2026 · Last verified July 2026

Property Jurisdictions

Type	Name
State	California
County	Contra Costa County
Municipality	Oakley City
Secondary School District	Liberty Union High School District (09 - 12)
Elementary School District	Oakley Union Elementary School District (KG - 08)

Tax Bill & Assessment History

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

Year	Tax Bill	Assessed Value
2026		$614,525 (+2%) Land $91,935 Building $522,590
2025	$11,225.00 (+4.45%) Homeowner's exemption	$602,477 (+4.04%) Land $90,133 Building $512,344
2023	$10,747.00 (+2.52%) Homeowner's exemption	$579,084 Land $86,634 Building $492,450
2022	$10,483.00