640 Center St, Walnut Creek, CA 94595 Property Records

Contra Costa County property record for 640 Center St, Walnut Creek, CA 94595

Property Summary

Property Type	Single Family Home
Details	4 bd · 2 ba · 1,810 sqft · built 1963
Lot Size	0.269 acres (11,700 sqft)
Owner	2 Company Names on Record
Last Sale	$852,500 (Feb 2015)
Tax Bill	$12,975 (2025)
Deeds & Mortgages	Mar 2017 Mortgage Apr 2021 Mortgage
Flood Zone	Zone X (minimal risk)
APN	`184-140-040-9`

Property Details

APN / Parcel Number

Primary APN	`184-140-040-9`
Alternative APN	`184-140-040`

Interior

Bedrooms	4 Beds
Full Baths	2 Baths
Total Rooms	8 Rooms
Stories	1 Story
Building Area	1,810 sqft Living Area
1st Floor Area	1,810 sqft

Exterior

Year Built	Built 1963
Effective Year Built	Effective 1985
Lot Area	11,700 sqft (0.269 acres)
Garage Type	Attached
Garage Area	345 sqft
Parking Spaces	1 Parking Space

Utilities, Heating & Cooling

Cooling System	Central

Location & Zoning

Street Address	640 CENTER ST
City	WALNUT CREEK
State	CA
Zip	94595-1332
Property Category	Residential
Property Type	Residential > Single Family > Home
Local Zoning Code	R10
Legal Description	DEWING PARK EXT POR LOT 9 BLK E
Legal Subdivision	DEWING PARK EXT
Legal Block	E
Legal Lot Number	9
Jurisdiction	CONTRA COSTA CA
Township / Civil Division	CENTRAL CONTRA COSTA
Census Block Group	1
Census Block	1010
Census Tract	341000

Owner

Source: Contra Costa County records, as of July 14, 2026

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

Owner of Record	2 Company Names on Record
Mailing Address	640 CENTER ST, WALNUT CREEK, CA 94595-1332
Occupancy	Owner Occupied
Owner Type	Company
Vesting	Trust, Revocable Trust

Deeds, Mortgages & Sale History

Date	Document
Mar 30, 2017	Deed of Trust, Mortgage · Conventional Mortgage NATIONSTAR MORTGAGE LLC
Apr 26, 2021	Deed of Trust, Mortgage · Conventional Mortgage QUICKEN LOANS LLC

Assessor's Deed Record

Deed Names	2 Names on Deed
Last Sale	Feb 25, 2015 · Amount on Record
Deed Sale	Feb 25, 2015 · Amount on Record
Prior Sale	Feb 17, 1995 · Amount on Record
Deed Document Number	201532174
Last Transfer Date	Jun 12, 2015
Transfer Doc	0000139803
Record Updated	Oct 29, 2026

March 2017: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	CONTRA COSTA CA
Property Address	640 CENTER ST, WALNUT CREEK, CA 94595-1332
Transaction Type	Mortgage
Record Updated	Nov 3, 2022
Title Company	TITLE 365 CORACPOLIS PA

Transferred To (Grantee/Buyer)

Name	Verified Name

Mortgage

Document Number	0000054996
Date	Mar 30, 2017
Instrument	2017-054996

Lender

Name	NATIONSTAR MORTGAGE LLC
Type	Mortgage Company
Address	COPPELL, TX 75019

Agreement

Type	Conventional Mortgage
Amount	Amount Recorded
Term	121 Months
Due	Apr 1, 2027

April 2021: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	CONTRA COSTA CA
Property Address	640 CENTER ST, WALNUT CREEK, CA 94595-1332
Transaction Type	Mortgage
Record Updated	Nov 3, 2022
Title Company	AMROCK TITLE CALIFORNIA

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	640 CENTER ST, WALNUT CREEK, CA 94595-1332

Mortgage

Document Number	0000124968
Date	Apr 26, 2021
Instrument	2021-124968

Lender

Name	QUICKEN LOANS LLC
Type	Mortgage Company
Address	DETROIT, MI 48226

Agreement

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

Interest

Rate Type	Adjustable Rate
Rate	1.62%
Type Change Date	May 1, 2026
Change Frequency	6 Months
Min Rate At Change	3%
Max Rate At Change	3.62%
Index	Other
Margin	3
Max Rate	6.62%

Tax Assessment & Valuation

Source: Contra Costa County assessment roll, as of July 14, 2026

Property Jurisdictions

Type	Name
State	California
County	Contra Costa County
Secondary School District	Acalanes Union High School District (09 - 12)
Elementary School District	Walnut Creek Elementary School District (KG - 08)

Tax Bill & Assessment History

Year	Tax Bill	Assessed Value
2026		$1,105,434 (+2%) Land $806,629 Building $298,805
2025	$12,975.00 (+3.87%) Homeowner's exemption	$1,083,760 (+4.04%) Land $790,813 Building $292,947
2023	$12,491.00 (+2.25%) Homeowner's exemption	$1,041,677 Land $760,105 Building $281,572
2022	$12,216.00

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

Flood

Source: FEMA National Flood Hazard Layer, effective October 12, 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 500 ft
Flood Insurance Requirement	Not required lenders may require it
Community Rating System	Class 6 (20% premium discount)
Nearby Flood Policies	5 in force
Nearby Flood Claims	3 (1993–1999)
Claims Outside the SFHA	3 of 3
Most Recent Claim	Mar 1999 · river or lake flooding

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 96% of the US · lower than 97.4% of California
Wildfire Likelihood	0.01% annual chance
Exposure	Direct burnable vegetation

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	EAST BAY MUD serves 1,468,000 people · EPA ID CA0110005
Water Source	Surface water
Last State Inspection	Dec 2021
Lead	Under 1 ppb (2022–2024) 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. This system sells water to local utilities; the supplier billing this address may be one of them.

Internet Providers

Source: FCC Broadband Data Collection, based on 480 locations within half a mile, as of December 31, 2025

Provider	Max Down / Up (Mbps)
AT&T Fiber	5,000 / 5,000
Xfinity Cable	2,000 / 250
Astound Broadband Cable	1,500 / 50
Unwired Fixed Wireless	300 / 25
Verizon Fixed Wireless	300 / 20
T-Mobile Fixed Wireless	100 / 20

May also be available: Etheric Networks.

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