1826 Alameda Diablo, Diablo, CA 94528 Property Records

Contra Costa County property record for 1826 Alameda Diablo, Diablo, CA 94528

Property Summary

Property Type	Single Family Home
Details	5 bd · 4.5 ba · 4,995 sqft · built 2001
Lot Size	0.49 acres (21,344 sqft)
Owner	2 Individual Names on Record
Last Sale	$3,650,000 (Jan 2026)
Tax Bill	$40,850 (2025)
Deeds & Mortgages	Oct 2026 Mortgage Jun 2022 Line of Credit + 3 more
Flood Zone	Zone X (minimal risk)
APN	`195-191-021-3`

Property Details

APN / Parcel Number

Primary APN	`195-191-021-3`
Alternative APN	`195-191-021`

Interior

Bedrooms	5 Beds
Full Baths	4.5 Baths
Half Baths	1 Half Bath
Total Rooms	14 Rooms
Stories	2 Stories
Building Area	4,995 sqft Living Area
1st Floor Area	2,335 sqft
2nd Floor Area	2,660 sqft

Exterior

Year Built	Built 2001
Effective Year Built	Effective 2002
Lot Area	21,344 sqft (0.49 acres)
Garage Type	Attached
Garage Area	1,255 sqft
Parking Spaces	5 Parking Spaces

Location & Zoning

Street Address	1826 ALAMEDA DIABLO
City	DIABLO
State	CA
Zip	94528
Property Category	Residential
Property Type	Residential > Single Family > Home
Local Zoning Code	R20
Legal Description	T175PM20 PCL B
Legal Subdivision	PARCEL MAP MS 7189
Legal Tract	175PM20
Jurisdiction	CONTRA COSTA CA
Township / Civil Division	CENTRAL CONTRA COSTA
Census Block Group	1
Census Block	1016
Census Tract	346205

Owner

Source: Contra Costa County records, as of October 20, 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	535 THISTLE CIR, MARTINEZ, CA 94553-5816
Owner Type	Individual
Vesting	Community Property

Deeds, Mortgages & Sale History

Date	Document
Oct 12, 2026	Deed of Trust, Mortgage · Conventional Mortgage HOME LENDING
Jun 22, 2022	Deed of Trust, Mortgage · Line of Credit FREMONT BANK
Jan 16, 2026	Grant Deed, Transfer · Conventional Mortgage XPERT HOME LENDING INC
May 26, 2022	Grant Deed, Transfer · Commercial Mortgage SLEVERS CHOW REVOCABLE TRUST
Sep 25, 2020	Quit Claim Deed, Transfer ATTORNEY ONLY

Assessor's Deed Record

Deed Names	2 Names on Deed
Last Sale	Jan 16, 2026 · Amount on Record
Deed Sale	Jan 16, 2026 · Amount on Record
Prior Sale	May 26, 2022 · Amount on Record
Deed Document Number	20265025
Prior Transfer Date	Nov 26, 2019
Prior Transfer Doc	0000216897
Record Updated	Oct 29, 2026

October 2026: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	CONTRA COSTA CA
Recording Date	Oct 12, 2026
Property Address	1826 ALAMEDA DIABLO, DIABLO, CA 94528
Document Number	0000109428
Instrument Date	Sep 30, 2026
Instrument	2026109428
Transaction Type	Mortgage
Record Updated	Oct 20, 2026
Title Company	NONE LISTED ON DOCUMENT

Transaction

Tax	$0.00
Additional	Multiple Parcels

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	535 THISTLE CIR, MARTINEZ, CA 94553-5816

Mortgage

Document Number	0000109428,
Date	Oct 12, 2026
Instrument	2026109428

Lender

Name	HOME LENDING

Agreement

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

Interest

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

June 2022: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	CONTRA COSTA CA
Property Address	1826 ALAMEDA DIABLO, DIABLO, CA 94528
Transaction Type	Mortgage
Record Updated	Jan 28, 2026
Title Company	FIDELITY NATIONAL TITLE

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	1826 ALAMEDA DIABLO, DIABLO, CA 94528

Mortgage

Document Number	0000102304
Date	Jun 22, 2022
Instrument	2022-102304

Lender

Name	FREMONT BANK
Type	Bank
Address	LIVERMORE, CA 94551

Agreement

Type	Line of Credit
Amount	Amount Recorded
Term	300 Months
Due	Jun 20, 2047

Interest

Rate Type	Adjustable Rate
Change Frequency	Monthly

January 2026: Grant Deed, Transfer

Document Type	Grant Deed
Jurisdiction	CONTRA COSTA CA
Recording Date	Jan 16, 2026
Property Address	1826 ALAMEDA DIABLO, DIABLO, CA 94528
Document Number	0000005025
Map Reference	MB 175 PG 20
Instrument Date	Jan 13, 2026
Instrument	2026- 005025
Transaction Type	Transfer
Record Updated	Jan 28, 2026
Title Company	FIDELITY NATIONAL TITLE, FIDELITY NATIONAL TITLE CO

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
Relationship	Right of Survivorship
Address	535 THISTLE CIR, MARTINEZ, CA 94553-5816

Mortgage

Document Number	0000005026
Date	Jan 16, 2026
Instrument	2026- 005026

Lender

Name	XPERT HOME LENDING INC
Type	Mortgage Company

Agreement

Type	Conventional Mortgage
Amount	Amount Recorded
Term	361 Months
Due	Feb 1, 2056

May 2022: Grant Deed, Transfer

Document Type	Grant Deed
Jurisdiction	CONTRA COSTA CA
Recording Date	May 26, 2022
Property Address	1826 ALAMEDA DIABLO, DIABLO, CA 94528
Document Number	0000089439
Map Reference	MB 175 PG 20
Instrument Date	May 19, 2022
Instrument	2022-089439
Transaction Type	Transfer
Record Updated	Nov 3, 2022
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
Relationship	Community Property with Right of Survivorship
Address	PO BOX 772, DIABLO, CA 94528-0772

Mortgage

Document Number	0000089440
Date	May 26, 2022
Instrument	2022-089440

Lender

Name	SLEVERS CHOW REVOCABLE TRUST
Type	Non-Lending Institution

Agreement

Type	Commercial Mortgage
Amount	Amount Recorded

September 2020: Quit Claim Deed, Transfer

Document Type	Quit Claim Deed
Jurisdiction	CONTRA COSTA CA
Recording Date	Sep 25, 2020
Property Address	1826 ALAMEDA DIABLO, DIABLO, CA 94528
Document Number	0000216897
Instrument Date	Nov 26, 2019
Instrument	216897
Transaction Type	Transfer
Record Updated	Oct 9, 2020
Title Company	ATTORNEY ONLY

Transaction

Tax	$0.00
Additional	Quitclaim Intrafamily Transfer

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Revocable Trust
Address	14 ALAMO SPRINGS CT DANVILLE CA 945261740, DANVILLE, CA 94526-1740

Tax Assessment & Valuation

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

Property Jurisdictions

Type	Name
State	California
County	Contra Costa County
Unified School District	San Ramon Valley Unified School District (KG - 12)

Tax Bill & Assessment History

Year	Tax Bill	Assessed Value
2026		$3,680,267 (+2%) Land $1,948,377 Building $1,731,890
2025	$40,850.00 (+3.62%)	$3,608,106 (+4.04%) Land $1,910,174 Building $1,697,932
2023	$39,421.00 (+53.28%)	$3,468,000 Land $1,836,000 Building $1,632,000
2022	$25,718.00

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
Nearest Special Flood Hazard Area	Zone A, within 500 ft
Flood Insurance Requirement	Not required lenders may require it
Flood Insurance Cost	Premium on Record median of 18 policies
Community Rating System	Class 6 (20% premium discount)
Nearby Flood Policies	18 in force
Nearby Flood Claims	1 (2017)
Claims Outside the SFHA	1 of 1
Most Recent Claim	Feb 2017 · Severe Winter Storms, Flooding, And Mudslides

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	Moderate above 69% of the US · above 44% of California
Wildfire Likelihood	0.3% 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	EAST BAY MUD serves 1,468,000 people · EPA ID CA0110005
Water Source	Surface water
Last State Inspection	Dec 2021
Lead	Under 1 ppb (2022–2024) 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. This system sells water to local utilities; the supplier billing this address may be one of them.

Internet Providers

Source: FCC Broadband Data Collection, based on 153 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
T-Mobile Fixed Wireless	100 / 20
AT&T DSL	100 / 20

May also be available: Verizon.

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