3521 Knightsen Ave, Knightsen, CA 94548 Property Records

Contra Costa County property record for 3521 Knightsen Ave, Knightsen, CA 94548 · Last verified July 2026

Property Summary

Property Type	Rural Home
Details	2,002 sqft · built 1937
Lot Size	7.81 acres (340,595 sqft)
Owner	2 Individual Names on File
Last Sale	$790,000 (Apr 2019)
Tax Bill	$10,374 (2025)
Deeds & Mortgages	Dec 2019 Mortgage Apr 2019 Sale & Mortgage + 1 more
Flood Zone	Zone X (minimal risk)
APN	`020-040-006-7`

Property Details

APN / Parcel Number

Primary APN	`020-040-006-7`
Alternative APN	`020-040-006`

Interior

Total Rooms	1 Room
Stories	1 Story
Building Area	2,002 sqft Living Area
1st Floor Area	2,002 sqft

Exterior

Year Built	Built 1937
Effective Year Built	Effective 1947
Lot Area	340,595 sqft

Location & Zoning

Street Address	3521 KNIGHTSEN AVE
City	KNIGHTSEN
State	CA
Zip	94548
Property Category	Residential
Property Type	Residential > Single Family > Rural Home
Legal Description	POR SEC 32 T2N R3E 7.82 AC EX MR
Legal Range	03E
Legal Township	02N
Legal Section	32
Jurisdiction	CONTRA COSTA CA
Township / Civil Division	EAST CONTRA COSTA
Census Block Group	2
Census Block	2015
Census Tract	302011

Owner

Source: Contra Costa County records · APN 020-040-006-7

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	2 Individual Names on File
Mailing Address	3521 KNIGHTSEN AVE, KNIGHTSEN, CA 94548
Occupancy	Owner Occupied
Owner Type	Individual
Vesting	Joint Tenants

Deeds, Mortgages & Sale History

Date	Document
Dec 23, 2019	Deed of Trust, Mortgage · Conventional Mortgage FREMONT BANK
Apr 02, 2019	Grant Deed, Transfer · Conventional Mortgage FREMONT BANK
Apr 02, 2019	Affidavit of Death, Transfer CHICAGO TITLE COMPANY, CHICAGO TITLE CO

Assessor's Deed Record

Deed Names	2 Verified Names on Deed
Last Sale	Apr 02, 2019 · Amount on Record
Deed Sale	Apr 02, 2019 · Amount on Record
Prior Sale	Aug 16, 1995
Deed Document Number	201945099
Prior Transfer Date	Mar 25, 2019
Prior Transfer Doc	0000045098
Record Updated	Sep 20, 2026

December 2019: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	CONTRA COSTA CA
Property Address	3521 KNIGHTSEN AVE, KNIGHTSEN, CA 94548
Transaction Type	Mortgage
Record Updated	Nov 03, 2022
Title Company	FIDELITY NATIONAL TITLE

Transferred To (Grantee/Buyer)

Name	Verified Name

Mortgage

Document Number	0000230040
Date	Dec 23, 2019
Instrument	2019-230040

Lender

Name	FREMONT BANK
Type	Bank
Address	LIVERMORE, CA 94551

Agreement

Type	Conventional Mortgage
Amount	Amount Recorded
Term	361 Months
Due	Jan 01, 2050

April 2019: Grant Deed, Transfer

Document Type	Grant Deed
Jurisdiction	CONTRA COSTA CA
Recording Date	Apr 02, 2019
Property Address	3521 KNIGHTSEN AVE, KNIGHTSEN, CA 94548
Document Number	0000045099
Instrument Date	Mar 26, 2019
Instrument	2019-045099
Transaction Type	Transfer
Record Updated	Nov 03, 2022
Title Company	CHICAGO TITLE COMPANY

Transaction

Amount	Amount Recorded
Downpayment	Downpayment on File
Loan-to-Value (LTV)	LTV on Record
Tax	$0.00
Amount Accuracy	Rounded by County
Additional	Arm's Length

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Joint Tenants
Address	3521 KNIGHTSEN AVE, KNIGHTSEN, CA 94548

Mortgage

Document Number	0000045100
Date	Apr 02, 2019
Instrument	2019-045100

Lender

Name	FREMONT BANK
Type	Bank

Agreement

Type	Conventional Mortgage
Amount	Amount Recorded
Term	360 Months
Due	Apr 01, 2049

April 2019: Affidavit of Death, Transfer

Document Type	Affidavit of Death
Jurisdiction	CONTRA COSTA CA
Recording Date	Apr 02, 2019
Property Address	3521 KNIGHTSEN AVE, KNIGHTSEN, CA 94548
Document Number	0000045098
Instrument Date	Mar 25, 2019
Instrument	45098
Transaction Type	Transfer
Record Updated	May 20, 2019
Title Company	CHICAGO TITLE COMPANY, CHICAGO TITLE CO

Transaction

Tax	$0.00
Additional	Intrafamily Transfer

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	PO BOX 1598 DISCOVERY BAY CA 945057598, DISCOVERY BAY, CA 94505-7598

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
Elementary School District	Knightsen 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		$990,678 (+2%) Land $719,105 Building $271,573
2025	$10,374.00 (+13.9%)	$971,254 (+14.67%) Land $705,005 Building $266,249
2023	$9,108.00 (+1.88%)	$847,036 Land $677,630 Building $169,406
2022	$8,940.00

Flood & Wildfire

Source: FEMA National Flood Hazard Layer, Contra Costa County (06013C), updated October 12, 2026 · FEMA OpenFEMA NFIP redacted claims and policies, census block group 060133020112, refreshed September 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
Special Flood Hazard Area	No
Flood Hazard	Minimal
500-Year Floodplain	No
Community Rating System	Class 6 (20% premium discount)
Nearby Flood Policies	6 in force
Nearby Flood Claims	2 (2017–2022)
Most Recent Claim	Dec 2022, rainfall accumulation, Severe Winter Storms, Flooding, Landslides, And Mudslides

Wildfire

Wildfire Risk	High above 71% of the US · above 46% of California
Wildfire Likelihood	About 1 in 375 per year
Exposure	Direct burnable vegetation at the parcel

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.

Internet Providers

Source: FCC Broadband Data Collection, availability as of December 31, 2025 · Published October 2026 · based on 28 locations within about half a mile of this property

Provider	Technology	Download / Upload (Mbps)
Xfinity	Cable	1,200 / 35
Unwired	Fixed Wireless	300 / 25
T-Mobile USA	Fixed Wireless	100 / 20

Availability varies by address; speeds are provider-advertised maximums, not measured.

Mobile Coverage

5G and 4G LTE

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