1793 Calle Arroyo, Diablo, CA 94528 Property Records

Contra Costa County property record for 1793 Calle Arroyo, Diablo, CA 94528

Property Summary

Property Type	Single Family Home
Details	6 bd · 7 ba · 8,673 sqft · built 2006
Lot Size	1.23 acres (53,622 sqft)
Owner	Trust Name on File
Tax Bill	$63,376 (2025)
Deeds & Mortgages	Jul 2020 Mortgage Dec 2018 Transfer + 1 more
Flood Zone	Zone X (minimal risk)
APN	`195-180-036-4`

Property Details

APN / Parcel Number

Primary APN	`195-180-036-4`
Alternative APNs	`195-180-036` `1951800117`

Interior

Bedrooms	6 Beds
Full Baths	7 Baths
Total Rooms	20 Rooms
Stories	2 Stories
Building Area	8,673 sqft Living Area
Gross Area	7,880 sqft
1st Floor Area	4,113 sqft
2nd Floor Area	3,767 sqft

Exterior

Year Built	Built 2006
Effective Year Built	Effective 2007
Lot Area	53,622 sqft
Garage Type	Attached
Garage Area	1,264 sqft
Parking Spaces	5 Parking Spaces

Location & Zoning

Street Address	1793 CALLE ARROYO
City	DIABLO
State	CA
Zip	94528
Property Category	Residential
Property Type	Residential > Single Family > Home
Local Zoning Code	R20
Legal Description	MT DIABLO ESTATE PK POR LOT 86,87
Legal Subdivision	MT DIABLO ESTATE
Legal Lot Number	86,87
Jurisdiction	CONTRA COSTA CA
Township / Civil Division	CENTRAL CONTRA COSTA
Census Block Group	1
Census Block	1000
Census Tract	346205

Owner

1793 Calle Arroyo is held in a trust since November 2018.

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

Owner of Record	Trust Name on File
Mailing Address	770 MAYS BLVD, 4063, INCLINE VILLAGE, NV 89450-8054
Owner Type	Company
Vesting	Trust

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
Jul 22, 2020	Deed of Trust, Mortgage · Conventional Mortgage MORGAN STANLEY PRIVATE BANK NA
Dec 21, 2018	Quit Claim Deed, Transfer ATTORNEY ONLY
Dec 21, 2018	Quit Claim Deed, Transfer ATTORNEY ONLY

Assessor's Deed Record

Deed Names	Name on Deed
Last Sale	Aug 29, 2003
Deed Sale	Aug 29, 2003
Prior Sale	Aug 22, 2003
Deed Document Number	2003432016
Last Transfer Date	Nov 26, 2018
Transfer Doc	0000204179
Record Updated	Sep 20, 2026

July 2020: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	CONTRA COSTA CA
Property Address	1793 CALLE ARROYO, DIABLO, CA 94528
Transaction Type	Mortgage
Record Updated	Nov 3, 2022
Title Company	OLD REPUBLIC TITLE CO SF

Transferred To (Grantee/Buyer)

Name	Verified Name

Mortgage

Document Number	0000147071
Date	Jul 22, 2020
Instrument	2020-147071

Lender

Name	MORGAN STANLEY PRIVATE BANK NA
Type	Bank
Address	CINCINNATI, OH 45245

Agreement

Type	Conventional Mortgage
Amount	Amount on Record
Term	361 Months
Due	Aug 1, 2050

December 2018: Quit Claim Deed, Transfer

Document Type	Quit Claim Deed
Jurisdiction	CONTRA COSTA CA
Recording Date	Dec 21, 2018
Property Address	1793 CALLE ARROYO, DIABLO, CA 94528
Document Number	0000204178
Instrument Date	Nov 26, 2018
Instrument	204178
Transaction Type	Transfer
Record Updated	Jan 4, 2019
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	Community Property
Address	PO BOX 277 DIABLO CA 945280277, DIABLO, CA 94528-0277

December 2018: Quit Claim Deed, Transfer

Document Type	Quit Claim Deed
Jurisdiction	CONTRA COSTA CA
Recording Date	Dec 21, 2018
Property Address	1793 CALLE ARROYO, DIABLO, CA 94528
Document Number	0000204179
Instrument Date	Nov 26, 2018
Instrument	204179
Transaction Type	Transfer
Record Updated	Jan 4, 2019
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	Personal Trust
Address	PO BOX 277 DIABLO CA 945280277, DIABLO, CA 94528-0277

Tax Assessment & Valuation

The 2025 property tax bill for 1793 Calle Arroyo was $63,376.

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		$5,770,282 (+2%) Land $2,900,458 Building $2,869,824
2025	$63,376.00	$5,657,140 Land $2,843,587 Building $2,813,553
2023	$61,197.00 (+0.37%)	$5,437,468 Land $2,733,168 Building $2,704,300
2022	$60,971.00

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

Flood

FEMA maps place 1793 Calle Arroyo in Zone X, an area of minimal flood risk, within 500 ft of a high-risk flood zone.

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 File 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

Wildfire risk around 1793 Calle Arroyo is moderate, ranking above 67% of the US, with a 0.3% annual chance of wildfire.

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

Wildfire Risk	Moderate above 67% of the US · above 42% of California
Wildfire Likelihood	0.3% annual chance
Exposure	Indirect within ember reach
Adjoins Burnable Land	Yes

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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