1850 el Nido, Diablo, CA 94528 Property Records

Contra Costa County property record for 1850 el Nido, Diablo, CA 94528

Property Summary

Property Type	Single Family Home
Details	3 bd · 4 ba · 3,946 sqft · built 1974
Lot Size	0.579 acres (25,200 sqft)
Owner	Individual Name on Record
Last Sale	$1,335,000 (May 2014)
Tax Bill	$24,040 (2025)
Deeds & Mortgages	Nov 2023 Line of Credit Aug 2021 Mortgage + 3 more
Flood Zone	Zone X (minimal risk)
APN	`195-370-005-9`

Property Details

APN / Parcel Number

Primary APN	`195-370-005-9`
Alternative APN	`195-370-005`

Interior

Bedrooms	3 Beds
Full Baths	4 Baths
Total Rooms	12 Rooms
Stories	1 Story
Building Area	3,946 sqft Living Area
1st Floor Area	3,213 sqft
Basement Area	704 sqft
Fireplaces	1 Fireplace
Fireplace	Fireplace

Exterior

Year Built	Built 1974
Effective Year Built	Effective 2005
Architectural Style	Contemporary
Exterior Material	Wood
Roof Material	Wood Shingle
Lot Area	25,200 sqft (0.579 acres)
View / Lot	Golf Course
Garage Type	Attached
Garage Area	756 sqft
Parking Spaces	3 Parking Spaces
Deck Area	Deck Area

Utilities, Heating & Cooling

Cooling System	Central
Heating System	Forced Air with A/C
Heating Fuel	Gas
Sewer	Municipal
Water Source	Commercial

Location & Zoning

Street Address	1850 EL NIDO
City	DIABLO
State	CA
Zip	94528
Property Category	Residential
Property Type	Residential > Single Family > Home
Local Zoning Code	R20
Legal Description	TRACT 3992 LOT 1
Legal Subdivision	SUBDIVISION 3992
Legal Tract	3992
Legal Lot Number	1
Jurisdiction	CONTRA COSTA CA
Township / Civil Division	CENTRAL CONTRA COSTA
Census Block Group	1
Census Block	1000
Census Tract	346205

Owner

Source: Contra Costa County records, as of October 12, 2026

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

Owner of Record	Individual Name on Record
Mailing Address	100 BUSH ST, 825, SAN FRANCISCO, CA 94104-3936
Occupancy	Owner Occupied
Owner Type	Individual

Deeds, Mortgages & Sale History

Date	Document
Nov 3, 2023	Deed of Trust, Mortgage · Line of Credit US BANK NA
Aug 3, 2021	Deed of Trust, Mortgage · Conventional Mortgage CHANGE LENDING LLC
Aug 3, 2021	Intrafamily Transfer, Transfer CHICAGO TITLE COMPANY
Aug 3, 2021	Intrafamily Transfer, Transfer CHICAGO TITLE COMPANY
Aug 22, 2018	Deed of Trust, Mortgage · Line of Credit TIAA FSB

Assessor's Deed Record

Deed Names	Name on Deed
Last Sale	May 6, 2014 · Amount on Record
Deed Sale	May 6, 2014 · Amount on Record
Deed Document Number	201471143
Last Transfer Date	Jul 30, 2021
Transfer Doc	0000216626
Record Updated	Oct 29, 2026

November 2023: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	CONTRA COSTA CA
Property Address	1850 EL NIDO, DIABLO, CA 94528
Transaction Type	Mortgage
Record Updated	Nov 15, 2023
Title Company	RADIAN SETTLEMENT SERVICES INC, RADIAN SETTLEMENT SERVICES

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	1850 EL NIDO, DIABLO, CA 94528

Mortgage

Document Number	0000119100
Date	Nov 3, 2023
Instrument	2023-119100

Lender

Name	US BANK NA
Type	Bank
Address	SANTA ANA, CA 92704

Agreement

Type	Line of Credit
Amount	Amount Recorded

Interest

Rate Type	Adjustable Rate
Change Frequency	Monthly

August 2021: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	CONTRA COSTA CA
Property Address	1850 EL NIDO, DIABLO, CA 94528
Transaction Type	Mortgage
Record Updated	May 30, 2023
Title Company	CHICAGO TITLE COMPANY

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	130 BUSH ST 10TH 10TH, 1010, SAN FRANCISCO, CA 94104-3826

Mortgage

Document Number	0000216625
Date	Aug 3, 2021
Instrument	2021-216625

Lender

Name	CHANGE LENDING LLC
Type	Mortgage Company
Address	IRVINE, CA 92606

Agreement

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

August 2021: Intrafamily Transfer, Transfer

Document Type	Intrafamily Transfer
Jurisdiction	CONTRA COSTA CA
Recording Date	Aug 3, 2021
Property Address	1850 EL NIDO, DIABLO, CA 94528
Document Number	0000216626
Map Reference	MB 149 PG 24
Instrument Date	Jul 30, 2021
Instrument	2021-216626
Transaction Type	Transfer
Record Updated	May 30, 2023
Title Company	CHICAGO 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
Relationship	Community Property with Right of Survivorship
Address	PO BOX 905, DIABLO, CA 94528-0905

August 2021: Intrafamily Transfer, Transfer

Document Type	Intrafamily Transfer
Jurisdiction	CONTRA COSTA CA
Recording Date	Aug 3, 2021
Property Address	1850 EL NIDO, DIABLO, CA 94528
Document Number	0000216627
Map Reference	MB 149 PG 24
Instrument Date	Jul 30, 2021
Instrument	2021-216627
Transaction Type	Transfer
Record Updated	May 30, 2023
Title Company	CHICAGO 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
Relationship	Family Trust
Address	PO BOX 905, DIABLO, CA 94528-0905

August 2018: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	CONTRA COSTA CA
Property Address	1850 EL NIDO, DIABLO, CA 94528
Document Number	0000144636
Instrument Date	Aug 22, 2018
Transaction Type	Mortgage
Record Updated	Sep 19, 2018
Title Company	SERVICELINK

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Separate Estate/Property
Address	1850 EL NIDO DIABLO CA 94528, DIABLO, CA 94528

Mortgage

Document Number	0000144636
Date	Sep 10, 2018
Instrument	144636

Lender

Name	TIAA FSB
Address	JACKSONVILLE, FL 32202

Agreement

Type	Line of Credit
Amount	Amount Recorded
Term	360 Months
Due	Sep 9, 2048

Interest

Rate Type	Adjustable Rate

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		$2,103,548 (+2%) Land $1,156,596 Building $946,952
2025	$24,040.00 (+3.72%) Homeowner's exemption	$2,062,303 (+4.04%) Land $1,133,918 Building $928,385
2023	$23,178.00 (+0.82%) Homeowner's exemption	$1,982,224 Land $1,089,888 Building $892,336
2022	$22,989.00

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
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	High above 72% of the US · above 47% 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 130 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: Etheric Networks, Verizon.

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