3136 Mount Diablo St, Concord, CA 94518 Property Records

Contra Costa County property record for 3136 Mount Diablo St, Concord, CA 94518

Property Summary

Property Type	Single Family Home
Details	3 bd · 2 ba · 1,397 sqft · built 1953
Lot Size	0.115 acres (5,005 sqft)
Owner	Individual Name on Record
Last Sale	$699,000 (Apr 2023)
Tax Bill	$9,027 (2025)
Deeds & Mortgages	Apr 2023 Mortgage Apr 2023 Sale & Second Mortgage
Flood Zone	Zone X (minimal risk)
APN	`105-187-025-9`

Property Details

APN / Parcel Number

Primary APN	`105-187-025-9`
Alternative APN	`105-187-025`

Interior

Bedrooms	3 Beds
Full Baths	2 Baths
Total Rooms	7 Rooms
Stories	1 Story
Building Area	1,397 sqft Living Area
1st Floor Area	1,397 sqft

Exterior

Year Built	Built 1953
Effective Year Built	Effective 1975
Lot Area	5,005 sqft (0.115 acres)
Garage Type	Attached
Garage Area	360 sqft
Parking Spaces	1 Parking Space

Utilities, Heating & Cooling

Heating System	Central

Location & Zoning

Street Address	3136 MOUNT DIABLO ST
City	CONCORD
State	CA
Zip	94518-1146
Property Category	Residential
Property Type	Residential > Single Family > Home
Local Zoning Code	R6
Legal Description	WILDWOOD MANOR LOT 89
Legal Subdivision	WILDEWOOD MANOR 01
Legal Lot Number	89
Jurisdiction	CONTRA COSTA CA
Township / Civil Division	CENTRAL CONTRA COSTA
Census Block Group	2
Census Block	2007
Census Tract	335000

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	3136 MOUNT DIABLO ST, CONCORD, CA 94518-1146
Occupancy	Owner Occupied
Owner Type	Individual

Deeds, Mortgages & Sale History

Date	Document
Apr 26, 2023	Intrafamily Transfer, Transfer · Conventional Mortgage ENVOY MORTGAGE LTD
Apr 26, 2023	Grant Deed, Transfer · Stand-Alone Second Mortgage ENVOY MORTGAGE LTD

Assessor's Deed Record

Deed Names	Name on Deed
Last Sale	Apr 26, 2023 · Amount on Record
Deed Sale	Apr 26, 2023 · Amount on Record
Prior Sale	Jul 7, 2016 · Amount on Record
Deed Document Number	202338616
Prior Transfer Date	Apr 20, 2023
Prior Transfer Doc	0000038617
Record Updated	Sep 20, 2026

April 2023: Intrafamily Transfer, Transfer

Document Type	Intrafamily Transfer
Jurisdiction	CONTRA COSTA CA
Recording Date	Apr 26, 2023
Property Address	3136 MOUNT DIABLO ST, CONCORD, CA 94518-1146
Document Number	0000038617
Map Reference	MB 49 PG 37
Instrument Date	Apr 20, 2023
Instrument	2023-038617
Transaction Type	Transfer
Record Updated	May 5, 2023
Title Company	OLD REPUBLIC TITLE, OLD REPUBLIC TITLE COMPANY

Transaction

Tax	$0.00
Amount Accuracy	Transfer Tax Exempt
Additional	Intrafamily Transfer

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	3136 MOUNT DIABLO ST, CONCORD, CA 94518-1146

Mortgage

Document Number	0000038618
Date	Apr 26, 2023
Instrument	2023-038618

Lender

Name	ENVOY MORTGAGE LTD
Type	Mortgage Company

Agreement

Type	Conventional Mortgage
Amount	Amount Recorded
Term	361 Months
Due	May 1, 2053

April 2023: Grant Deed, Transfer

Document Type	Grant Deed
Jurisdiction	CONTRA COSTA CA
Recording Date	Apr 26, 2023
Property Address	3136 MOUNT DIABLO ST, CONCORD, CA 94518-1146
Document Number	0000038616
Map Reference	MB 49 PG 37
Instrument Date	Apr 13, 2023
Instrument	2023-038616
Transaction Type	Transfer
Record Updated	May 5, 2023
Title Company	OLD REPUBLIC TITLE, OLD REPUBLIC TITLE COMPANY

Transaction

Amount	Amount Recorded
Downpayment	Downpayment on Record
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
Address	3136 MOUNT DIABLO ST, CONCORD, CA 94518-1146

Mortgage

Document Number	0000038619
Date	Apr 26, 2023
Instrument	2023-038619

Lender

Name	ENVOY MORTGAGE LTD
Type	Mortgage Company

Agreement

Type	Stand-Alone Second Mortgage
Amount	Amount Recorded
Term	361 Months
Due	May 1, 2053

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		$741,783 (+2%) Land $466,931 Building $274,852
2025	$9,027.00 (+59.43%)	$727,239 (+64.22%) Land $457,776 Building $269,463
2023	$5,662.00 (+1.56%) Homeowner's exemption	$442,857 Land $277,762 Building $165,095
2022	$5,575.00

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 · 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 7 (15% premium discount)
Nearby Flood Policies	6 in force
Nearby Flood Claims	3 (1980–1998)
Most Recent Claim	Mar 1998 · Severe Winter Storms And Flooding
Claims by Event	Severe Winter Storms And Flooding, Mar 1998 · 2 claims

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

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 672 locations within half a mile, as of December 31, 2025

Provider	Max Down / Up (Mbps)
Sonic Telecom Fiber	10,000 / 10,000
AT&T Fiber · DSL	5,000 / 5,000
Xfinity Cable	2,000 / 250
Astound Broadband Cable	1,500 / 50
Unwired Fixed Wireless	300 / 25
T-Mobile Fixed Wireless	100 / 20

May also be available: Verizon.

Cell Coverage

5G (outdoors only) and 4G LTE

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