100 Winestone Ct, Alamo, CA 94507 Property Records

Contra Costa County property record for 100 Winestone Ct, Alamo, CA 94507

Property Summary

Property Type	Single Family Home
Details	5 bd · 4.5 ba · 3,694 sqft · built 1988
Lot Size	0.557 acres (24,240 sqft)
Owner	2 Company Names on Record
Last Sale	$1,530,000 (Jul 2016)
Tax Bill	$21,880 (2025)
Deeds & Mortgages	Jul 2018 Line of Credit Sep 2022 Line of Credit
Flood Zone	Zone X (minimal risk)
APN	`196-010-043-4`

Property Details

APN / Parcel Number

Primary APN	`196-010-043-4`
Alternative APN	`196-010-043`

Interior

Bedrooms	5 Beds
Full Baths	4.5 Baths
Half Baths	1 Half Bath
Total Rooms	12 Rooms
Stories	2 Stories
Building Area	3,694 sqft Living Area
1st Floor Area	1,896 sqft
2nd Floor Area	1,798 sqft

Exterior

Year Built	Built 1988
Effective Year Built	Effective 2010
Lot Area	24,240 sqft (0.557 acres)
Garage Type	Attached
Garage Area	750 sqft
Parking Spaces	3 Parking Spaces

Utilities, Heating & Cooling

Cooling System	Central

Location & Zoning

Street Address	100 WINESTONE CT
City	ALAMO
State	CA
Zip	94507-2780
Property Category	Residential
Property Type	Residential > Single Family > Home
Local Zoning Code	R20
Legal Description	T6457 L10
Legal Subdivision	SUBDIVISION 6457
Legal Tract	6457
Legal Lot Number	10
Jurisdiction	CONTRA COSTA CA
Township / Civil Division	CENTRAL CONTRA COSTA
Census Block Group	1
Census Block	1000
Census Tract	346206

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	100 WINESTONE CT, ALAMO, CA 94507-2780
Occupancy	Owner Occupied
Owner Type	Company
Vesting	Trust

Deeds, Mortgages & Sale History

Date	Document
Jul 25, 2018	Deed of Trust, Mortgage · Line of Credit CITIBANK NA
Sep 2, 2022	Deed of Trust, Mortgage · Line of Credit CEFCU

Assessor's Deed Record

Deed Names	2 Names on Deed
Last Sale	Jul 19, 2016 · Amount on Record
Deed Sale	Jul 19, 2016 · Amount on Record
Prior Sale	Jul 11, 2006 · Amount on Record
Deed Document Number	2016142431
Last Transfer Date	Aug 1, 2016
Transfer Doc	0000197695
Record Updated	Oct 29, 2026

July 2018: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	CONTRA COSTA CA
Property Address	100 WINESTONE CT, ALAMO, CA 94507-2780
Transaction Type	Mortgage
Record Updated	Nov 3, 2022

Transferred To (Grantee/Buyer)

Name	Verified Name

Mortgage

Document Number	0000118306
Date	Jul 25, 2018
Instrument	2018-118306

Lender

Name	CITIBANK NA
Type	Bank
Address	SIOUX FALLS, SD 57104

Agreement

Type	Line of Credit
Amount	Amount Recorded
Term	360 Months
Due	Jul 24, 2048

Interest

Rate Type	Adjustable Rate
Change Frequency	Monthly

September 2022: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	CONTRA COSTA CA
Property Address	100 WINESTONE CT, ALAMO, CA 94507-2780
Transaction Type	Mortgage
Record Updated	Nov 3, 2022
Title Company	AEG

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	100 WINESTONE CT, ALAMO, CA 94507-2780

Mortgage

Document Number	0000135547
Date	Sep 2, 2022
Instrument	2022-135547

Lender

Name	CEFCU
Type	Credit Union
Address	PEORIA, IL 61607

Agreement

Type	Line of Credit
Amount	Amount Recorded
Term	300 Months
Due	Sep 1, 2047

Interest

Rate Type	Adjustable Rate
Change Frequency	Monthly

Tax Assessment & Valuation

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

Property Jurisdictions

Type	Name
State	California
County	Contra Costa County
Unified School District	San Ramon Valley Unified School District (KG - 12)

Tax Bill & Assessment History

Year	Tax Bill	Assessed Value
2026		$1,968,224 (+2%) Land $1,171,956 Building $796,268
2025	$21,880.00 (+3.63%) Homeowner's exemption	$1,929,632 (+4.04%) Land $1,148,977 Building $780,655
2023	$21,114.00 (+0.75%) Homeowner's exemption	$1,854,705 Land $1,104,362 Building $750,343
2022	$20,957.00

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
Flood Insurance Requirement	Not required lenders may require it
Community Rating System	Class 6 (20% premium discount)
Nearby Flood Policies	1 in force

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	Moderate above 67% of the US · above 41% of California
Wildfire Likelihood	0.2% annual chance
Exposure	Indirect within ember reach
Adjoins Burnable Land	Yes

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 117 locations within half a mile, as of December 31, 2025

Provider	Max Down / Up (Mbps)
Xfinity Cable	2,000 / 250
Unwired Fixed Wireless	300 / 25
Verizon Fixed Wireless	300 / 20
Etheric Networks Fixed Wireless	250 / 100
T-Mobile Fixed Wireless	100 / 20

May also be available: AT&T.

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