820 Winslow St, Crockett, CA 94525 Property Records

Contra Costa County property record for 820 Winslow St, Crockett, CA 94525

Property Summary

Property Type	Duplex
Details	4 bd · 2 ba · 2,588 sqft · built 1908
Lot Size	0.055 acres (2,400 sqft)
Owner	Individual Name on Record
Last Sale	$30,000 (Sep 1998)
Tax Bill	$4,840 (2025)
Flood Zone	Zone X (minimal risk)
APN	`354-094-016-4`

Property Details

APN / Parcel Number

Primary APN	`354-094-016-4`
Alternative APN	`354-094-016`

Interior

Bedrooms	4 Beds
Full Baths	2 Baths
Total Rooms	10 Rooms
Stories	2 Stories
Building Area	2,588 sqft Living Area
1st Floor Area	1,294 sqft
2nd Floor Area	1,294 sqft

Exterior

Year Built	Built 1908
Effective Year Built	Effective 1908
Architectural Style	Duplex Single
Lot Area	2,400 sqft (0.055 acres)

Location & Zoning

Street Address	820 WINSLOW ST
City	CROCKETT
State	CA
Zip	94525-1105
Property Category	Residential
Property Type	Residential > Multi-Unit > Duplex
Local Zoning Code	RB
Legal Description	TOWN OF CROLONA POR 9 50
Legal Subdivision	CROLONA MAP 01
Legal Block	50
Legal Lot Number	9
Jurisdiction	CONTRA COSTA CA
Township / Civil Division	WEST CONTRA COSTA
Census Block Group	3
Census Block	3004
Census Tract	357000

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	Individual Name on Record
Mailing Address	2546 SANTA BARBARA DR, PINOLE, CA 94564-1208
Owner Type	Individual
Vesting	Single Person

Deeds, Mortgages & Sale History

Assessor's Deed Record

Deed Names	Name on Deed
Last Sale	Sep 21, 1998 · Amount on Record
Deed Sale	Sep 21, 1998 · Amount on Record
Deed Document Number	1998228544
Record Updated	Sep 20, 2026

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	John Swett Unified School District (KG - 12)

Tax Bill & Assessment History

Year	Tax Bill	Assessed Value
2026		$239,834 (+2%) Land $127,912 Building $111,922
2025	$4,840.00 (+9.85%)	$235,132 (+4.04%) Land $125,404 Building $109,728
2023	$4,406.00 (+1.06%)	$226,004 Land $120,536 Building $105,468
2022	$4,360.00

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

FEMA Flood Zone	Zone X minimal risk
Flood Insurance Requirement	Not required lenders may require it

Values are read at the parcel center point; 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 65% of the US · lower than 79% of California
Wildfire Likelihood	0.03% 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	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 430 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
Verizon Fixed Wireless	300 / 20
T-Mobile Fixed Wireless	100 / 20