848 Corte Briones, Martinez, CA 94553 Property Records

Contra Costa County property record for 848 Corte Briones, Martinez, CA 94553

Property Summary

Property Type	Single Family Home
Details	5 bd · 5 ba · 4,413 sqft · built 1979
Lot Size	0.868 acres (37,800 sqft)
Owner	Company Name on File
Last Sale	$1,000,000 (Jul 2021)
Tax Bill	$24,642 (2025)
Deeds & Mortgages	May 2026 Construction Loan Apr 2023 Mortgage + 1 more
Flood Zone	Zone X (minimal risk)
APN	`365-150-059-1`

Property Details

APN / Parcel Number

Primary APN	`365-150-059-1`
Alternative APN	`365-150-059`

Interior

Bedrooms	5 Beds
Full Baths	5 Baths
Total Rooms	11 Rooms
Stories	1 Story
Building Area	4,413 sqft Living Area
1st Floor Area	2,823 sqft
Basement Area	652 sqft

Exterior

Year Built	Built 1979
Effective Year Built	Effective 2000
Lot Area	37,800 sqft (0.868 acres)
Garage Type	Attached
Garage Area	713 sqft
Parking Spaces	2 Parking Spaces

Utilities, Heating & Cooling

Cooling System	Central

Location & Zoning

Street Address	848 CORTE BRIONES
City	MARTINEZ
State	CA
Zip	94553-5950
Property Category	Residential
Property Type	Residential > Single Family > Home
Local Zoning Code	R20
Legal Description	PCL MAP 68 PM 38 PCL A
Legal Subdivision	SUBDIVISION 4905
Legal Tract	68PM38
Legal Lot Number	9
Jurisdiction	CONTRA COSTA CA
Township / Civil Division	CENTRAL CONTRA COSTA
Census Block Group	2
Census Block	2002
Census Tract	347000

Owner

848 Corte Briones is owned by a company that bought it in July 2021.

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

Owner of Record	Company Name on File
Mailing Address	848 CORTE BRIONES, MARTINEZ, CA 94553-5950
Owner Type	Company
Vesting	Limited Liability Company

Owner names and exact recorded amounts are on file and can be viewed instantly on this page with a free 10-day trial.

Deeds, Mortgages & Sale History

Date	Document
May 15, 2026	Deed of Trust, Mortgage · Construction Mortgage RFLF 5 LLC
Apr 20, 2023	Deed of Trust, Mortgage · Conventional Mortgage SARAH MILES KRASZNEKEWICZ
Jul 6, 2021	Grant Deed, Transfer

Assessor's Deed Record

Deed Names	Name on Deed
Last Sale	Jul 6, 2021 · Amount on File
Deed Sale	Jul 6, 2021 · Amount on File
Prior Sale	Dec 30, 2016 · Amount on File
Deed Document Number	2021191430
Prior Transfer Date	May 24, 2007
Prior Transfer Doc	0000153473
Record Updated	Oct 29, 2026

May 2026: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	CONTRA COSTA CA
Recording Date	May 15, 2026
Property Address	848 CORTE BRIONES, MARTINEZ, CA 94553-5950
Document Number	0000051207
Instrument Date	May 13, 2026
Instrument	202651207
Transaction Type	Mortgage
Record Updated	Jul 12, 2026
Title Company	E-CHICAGO TITLE, CHICAGO TITLE

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Limited Liability Partnership, 266
Address	554 YGNACIO VALLEY RD, WALNUT CREEK, CA 94596-8200

Mortgage

Document Number	0000051207,
Date	May 15, 2026
Instrument	202651207

Lender

Name	RFLF 5 LLC

Agreement

Type	Construction Mortgage
Amount	Amount on Record
Term	12 Months
Due	Jun 1, 2027

Interest

Rate	6.3%
Max Rate	-1%

April 2023: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	CONTRA COSTA CA
Property Address	848 CORTE BRIONES, MARTINEZ, CA 94553-5950
Transaction Type	Mortgage
Record Updated	May 1, 2023
Title Company	LAWYERS TITLE

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	848 CORTE BRIONES, MARTINEZ, CA 94553-5950

Mortgage

Document Number	0000036694
Date	Apr 20, 2023
Instrument	2023-036694

Lender

Name	SARAH MILES KRASZNEKEWICZ
Type	Private Party
Address	3275 E ROBERTSON BLVD # 8, CHOWCHILLA, CA 93610

Agreement

Type	Conventional Mortgage
Amount	Amount on Record
Term	13 Months
Due	May 1, 2024

July 2021: Grant Deed, Transfer

Document Type	Grant Deed
Jurisdiction	CONTRA COSTA CA
Recording Date	Jul 6, 2021
Property Address	848 CORTE BRIONES, MARTINEZ, CA 94553-5950
Document Number	0000191430
Map Reference	MB 68 PG 38
Instrument Date	Jul 6, 2021
Instrument	2021-191430
Transaction Type	Transfer
Record Updated	Nov 3, 2022

Transaction

Amount	Amount 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

Tax Assessment & Valuation

The 2025 property tax bill for 848 Corte Briones was $24,642.

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

Property Jurisdictions

Type	Name
State	California
County	Contra Costa County
Municipality	Martinez City
Unified School District	Martinez Unified School District (KG - 12)

Tax Bill & Assessment History

Year	Tax Bill	Assessed Value
2026		$1,762,832 (-12.57%) Land $757,628 Building $1,005,204
2025	$24,642.00	$2,016,294 Land $742,845 Building $1,273,449
2023	$23,141.00 (+1.74%)	$1,938,000 Land $714,000 Building $1,224,000
2022	$22,746.00

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

Flood

FEMA maps place 848 Corte Briones in Zone X, an area of minimal flood risk, though there have been 1 flood claim nearby since 1986.

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
Nearby Flood Claims	1 (1986)
Claims Outside the SFHA	1 of 1
Most Recent Claim	Feb 1986 · Severe Storms & 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

Wildfire risk around 848 Corte Briones is high, ranking above 70% of the US, with a 0.4% annual chance of wildfire.

Source: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024

Wildfire Risk	High above 70% of the US · above 45% of California
Wildfire Likelihood	0.4% 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	CITY OF MARTINEZ serves 31,015 people · EPA ID CA0710006
Water Source	Purchased surface water from CONTRA COSTA WATER DISTRICT
Last State Inspection	Oct 2025
Lead	Under 1 ppb (2023–2025) 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.

Internet Providers

Source: FCC Broadband Data Collection, based on 203 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
AT&T DSL	100 / 20

May also be available: T-Mobile.

Nearby Properties on Corte Briones

Nearby Streets

Search Property Records by Address or Parcel Number

Search by:

By searching, you agree to: Terms • Privacy • Disclosures