4278 Mercer Ct, Concord, CA 94521 Property Records

Contra Costa County property record for 4278 Mercer Ct, Concord, CA 94521

Property Summary

Property Type	Single Family Home
Details	3 bd · 2 ba · 1,071 sqft · built 1961
Lot Size	0.17 acres (7,420 sqft)
Owner	2 Individual Names on Record
Last Sale	$138,000 (Jan 1996)
Tax Bill	$3,542 (2025)
Deeds & Mortgages	Jul 2026 Mortgage Aug 2017 Mortgage + 4 more
Flood Zone	Zone X (minimal risk)
APN	`115-252-012-6`

Property Details

APN / Parcel Number

Primary APN	`115-252-012-6`
Alternative APN	`115-252-012`

Interior

Bedrooms	3 Beds
Full Baths	2 Baths
Total Rooms	6 Rooms
Stories	1 Story
Building Area	1,071 sqft Living Area
1st Floor Area	1,071 sqft

Exterior

Year Built	Built 1961
Effective Year Built	Effective 1961
Lot Area	7,420 sqft (0.17 acres)
Garage Type	Attached
Garage Area	360 sqft
Parking Spaces	1 Parking Space

Utilities, Heating & Cooling

Heating System	Forced Air with A/C

Location & Zoning

Street Address	4278 MERCER CT
City	CONCORD
State	CA
Zip	94521-1947
Property Category	Residential
Property Type	Residential > Single Family > Home
Local Zoning Code	R7
Legal Description	TRACT 2847 LOT 34
Legal Subdivision	2847 BELLAIR ESTATES
Legal Tract	2847
Legal Lot Number	34
Jurisdiction	CONTRA COSTA CA
Township / Civil Division	CENTRAL CONTRA COSTA
Census Block Group	3
Census Block	3004
Census Tract	333200

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 Individual Names on Record
Mailing Address	4278 MERCER CT, CONCORD, CA 94521-1947
Occupancy	Owner Occupied
Owner Type	Individual
Vesting	Joint Tenants

Deeds, Mortgages & Sale History

Date	Document
Jul 1, 2026	Deed of Trust, Mortgage · Conventional Mortgage ROCKET MORTGAGE LLC
Aug 24, 2017	Deed of Trust, Mortgage · Conventional Mortgage NEW PENN FINANCIAL LLC
Sep 15, 2020	Deed of Trust, Mortgage · Conventional Mortgage QUICKEN LOANS LLC
Sep 3, 2021	Deed of Trust, Mortgage · Conventional Mortgage ROCKET MORTGAGE LLC
Dec 3, 2019	Deed of Trust, Mortgage · Conventional Mortgage QUICKEN LNS
Apr 30, 2019	Deed of Trust, Mortgage · Conventional Mortgage QUICKEN LNS

Assessor's Deed Record

Deed Names	2 Names on Deed
Last Sale	Jan 31, 1996 · Amount on Record
Deed Sale	Jan 31, 1996 · Amount on Record
Deed Document Number	199618117
Last Transfer Date	Mar 11, 2005
Transfer Doc	0000091662
Record Updated	Sep 20, 2026

July 2026: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	CONTRA COSTA CA
Recording Date	Jul 1, 2026
Property Address	4278 MERCER CT, CONCORD, CA 94521-1947
Document Number	0000069396
Instrument Date	Jun 26, 2026
Instrument	202669396
Transaction Type	Mortgage
Record Updated	Jul 12, 2026
Title Company	NONE LISTED ON DOCUMENT

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	4278 MERCER CT, CONCORD, CA 94521-1947

Mortgage

Document Number	0000069396,
Date	Jul 1, 2026
Instrument	202669396

Lender

Name	ROCKET MORTGAGE LLC

Agreement

Type	Conventional Mortgage
Amount	Amount Recorded
Term	360 Months
Due	Jul 1, 2056

Interest

Rate Type	Fixed Rate
Rate	6.53%
Initial Type	Fixed Rate
Max Rate	-1%

August 2017: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	CONTRA COSTA CA
Property Address	4278 MERCER CT, CONCORD, CA 94521-1947
Transaction Type	Mortgage
Record Updated	Nov 3, 2022
Title Company	AVENUE 365 LENDER SVCS LLC

Transferred To (Grantee/Buyer)

Name	Verified Name

Mortgage

Document Number	0000154616
Date	Aug 24, 2017
Instrument	2017-154616

Lender

Name	NEW PENN FINANCIAL LLC
Type	Mortgage Company
Address	PLYMOUTH MEETING, PA 19462

Agreement

Type	Conventional Mortgage
Amount	Amount Recorded
Term	361 Months
Due	Sep 1, 2047

September 2020: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	CONTRA COSTA CA
Property Address	4278 MERCER CT, CONCORD, CA 94521-1947
Transaction Type	Mortgage
Record Updated	Nov 3, 2022
Title Company	AMROCK INC

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	4278 MERCER CT, CONCORD, CA 94521-1947

Mortgage

Document Number	0000204232
Date	Sep 15, 2020
Instrument	2020-204232

Lender

Name	QUICKEN LOANS LLC
Type	Mortgage Company
Address	DETROIT, MI 48226

Agreement

Type	Conventional Mortgage
Amount	Amount Recorded
Term	324 Months
Due	Sep 1, 2047

September 2021: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	CONTRA COSTA CA
Property Address	4278 MERCER CT, CONCORD, CA 94521-1947
Transaction Type	Mortgage
Record Updated	Nov 3, 2022
Title Company	AMROCK INC

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	4278 MERCER CT, CONCORD, CA 94521-1947

Mortgage

Document Number	0000248095
Date	Sep 3, 2021
Instrument	2021-248095

Lender

Name	ROCKET MORTGAGE LLC
Type	Mortgage Company
Address	DETROIT, MI 48226

Agreement

Type	Conventional Mortgage
Amount	Amount Recorded
Term	360 Months
Due	Sep 1, 2051

December 2019: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	CONTRA COSTA CA
Property Address	4278 MERCER CT, CONCORD, CA 94521-1947
Document Number	0000219997
Instrument Date	Dec 3, 2019
Transaction Type	Mortgage
Record Updated	Dec 19, 2019
Title Company	AMROCK TITLE CA INC

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Husband and Wife
Address	4278 MERCER CT CONCORD CA 945211947, CONCORD, CA 94521-1947

Mortgage

Document Number	0000219997
Date	Dec 9, 2019
Instrument	219997

Lender

Name	QUICKEN LNS
Type	Funding / Finance Company
Address	DETROIT, MI 48226-1906

Agreement

Type	Conventional Mortgage
Amount	Amount Recorded
Term	360 Months
Due	Dec 8, 2049

April 2019: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	CONTRA COSTA CA
Property Address	4278 MERCER CT, CONCORD, CA 94521-1947
Document Number	0000064352
Instrument Date	Apr 30, 2019
Transaction Type	Mortgage
Record Updated	May 15, 2019
Title Company	AMROCK TITLE CA INC

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Husband and Wife
Address	4278 MERCER CT CONCORD CA 945211947, CONCORD, CA 94521-1947

Mortgage

Document Number	0000064352
Date	May 6, 2019
Instrument	64352

Lender

Name	QUICKEN LNS
Type	Funding / Finance Company
Address	DETROIT, MI 48226-1966

Agreement

Type	Conventional Mortgage
Amount	Amount Recorded
Term	360 Months
Due	May 5, 2049

Tax Assessment & Valuation

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

Property Jurisdictions

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

Tax Bill & Assessment History

Year	Tax Bill	Assessed Value
2026		$233,803 (+2%) Land $136,815 Building $96,988
2025	$3,542.00 (+5.57%)	$229,220 (+4.04%) Land $134,133 Building $95,087
2023	$3,355.00 (+1.94%)	$220,321 Land $128,925 Building $91,396
2022	$3,291.00

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	Not rated no burnable land within 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	CONTRA COSTA WATER DISTRICT serves 210,500 people · EPA ID CA0710003
Water Source	Surface water
Last State Inspection	Jan 2022
Lead	Under 1 ppb (2026–2028) 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 502 locations within half a mile, as of December 31, 2025

Provider	Max Down / Up (Mbps)
Xfinity Cable	2,000 / 250
Astound Broadband Cable	1,500 / 50
Unwired Fixed Wireless	300 / 25
T-Mobile Fixed Wireless	100 / 20
AT&T DSL · Fiber in parts of the area	100 / 20

May also be available: Verizon.

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