3551 Keystone Loop, Discovery Bay, CA 94505 Property Records

Contra Costa County property record for 3551 Keystone Loop, Discovery Bay, CA 94505 · Last verified August 2026

Property Highlights

Property Type	Residential > Single Family > Home
Bedrooms	4 Beds
Bathrooms	2.5 Baths
Year Built	Built 2004
Square Footage	3,030 sqft Living Area
Lot Size	6,900 sqft (0.158 acres)
Occupancy	Owner Occupied
Last Sale	$796,000 (2021)
Tax Bill	$11,368.00 (2025)

Property Details

APN / Parcel Number

Primary APN	`011-421-025-5`
Alternative APN	`011-421-025`

Interior

Bedrooms	4 Beds
Full Baths	2.5 Baths
Partial Baths	1 Partial Baths
Total Rooms	10 Rooms
Building Area	3,030 sqft Living Area
1st Floor	1,952 sqft 1st Floor
2nd Floor	1,078 sqft 2nd Floor
Stories	2 Stories

Exterior

Year Built	Built 2003
Effective Year Built	Effective 2004
Architectural Style	Cluster Style
Lot Area	6,900 sqft (0.158 acres)
Parking Spaces	2 Parking Spaces
Garage Type	Attached Garage
Garage Area	615 sqft Garage

Utilities and HVAC

Cooling System	Central Cooling

Location & Zoning

Street Address	3551 KEYSTONE LOOP
City	DISCOVERY BAY
State	CA
Zip	94505-2322
Property Usage	Residential Property Usage
Type	Residential > Single Family > Home
Legal Description	T8430 POR LOTS 25 & 24
Legal Subdivision	SUBDIVISION 8430
Legal Tract	8430
Legal Lot Number	25,24
Jurisdiction	CONTRA COSTA CA
Minor Civil Division	EAST CONTRA COSTA
Census Blockgroup	3
Census Block	3001
Census Tract	304007

Owner

Source: Contra Costa County records · APN 011-421-025-5

Assessment roll updated July 14, 2026 · Last verified August 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 File
Mailing Address	3551 KEYSTONE LOOP, DISCOVERY BAY, CA 94505-2322
Occupancy	Owner Occupied
Owner Type	Owner is an Individual, Couple or Unincorporated Entity
Vesting	Community Property

Deeds, Mortgages & Sale History

Assessor's Deed Record

Deed Names	2 Verified Names on Deed
Last Sale	Jul 30, 2021 · Amount on Record
Deed Sale	Jul 30, 2021 · Amount on Record
Prior Sale	Jun 22, 2015 · Amount on Record
Deed Doc Number	2021214428
Prior Transfer Date	Oct 16, 2002
Prior Transfer Doc	0000401496
Record Refreshed	Sep 20, 2026

July 2021: Grant Deed, Transfer

Document Type	Grant Deed
Jurisdiction	CONTRA COSTA CA
Recording Date	Jul 30, 2021
Property Address	3551 KEYSTONE LOOP, DISCOVERY BAY, CA 94505-2322
Document Number	0000214428
Map Reference	MB 436 PG 17
Instrument Date	Jul 27, 2021
Instrument	2021-214428
Transaction Type	Transfer
Record Updated	Nov 03, 2022
Title Company	FIRSTAMERICAN TITLE COMPANY, FIRST AMERICAN TITLE COMPANY

Transaction

Amount	Amount Recorded
Downpayment	Downpayment on File
Loan-to-Value (LTV)	LTV on Record
Tax	$0.00
Amount Accuracy	Rounded Values by County
Additional	Arms Length Transaction

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Community Property (Marital Community) with Rights of Survivorship
Address	3551 KEYSTONE LOOP, DISCOVERY BAY, CA 94505-2322

Mortgage

Document Number	0000214429
Date	Jul 30, 2021
Instrument	2021-214429

Lender

Name	FIRST GUARANTY MORTGAGE CORP
Type	Mortgage Company

Agreement

Type	Federal Housing Administration (FHA) Mortgage
Amount	Amount Recorded
Term	361 Months
Due	Aug 01, 2051

Tax Assessment & Valuation

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

Property Jurisdictions

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

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		$861,613 (+2%) Land $162,364 Building $699,249
2025	$11,368.00 (+6.36%) Homeowner's exemption	$844,720 (+4.04%) Land $159,181 Building $685,539
2023	$10,688.00 (+1.66%) Homeowner's exemption	$811,920 Land $153,000 Building $658,920
2022	$10,513.00

Flood & Wildfire

Source: FEMA National Flood Hazard Layer, Contra Costa County (06013C), updated October 12, 2026 · USDA Forest Service Wildfire Risk to Communities, 2nd edition (2024), fuels as of 2020 · Last verified October 2026

Flood

FEMA Flood Zone	Zone X
Flood Hazard	Moderate
500-Year Floodplain	Yes
Special Flood Hazard Area	No
Nearest Special Flood Hazard Area	Zone A, within 500 ft

Wildfire

Wildfire Risk	Not rated no burnable land in reach
Wildfire Likelihood	Negligible
Exposure	None beyond ember reach

Values are read at the parcel center point; lenders make the official flood determination.