Mike Kavanaugh
Responds Quickly
Town & Country Realty
(925) 940-5295
55 Total Sales
1 in Diablo
$1,900,000 Price
1749 Alameda Diablo Diablo, CA 94528
Diablo AreaEstimated Value: $5,699,000 - $10,123,776
6
Beds
9.5
Baths
8,010
Sq Ft
$1,032/Sq Ft
Est. Value
Highlights
- Gas Heated Pool
- Custom Home
- 36,020 Sq Ft lot
- Green Valley Elementary School Rated A
- Updated Kitchen
- Family Room with Fireplace
About This Home
As of February 2026An iconic gated estate on prestigious Alameda Diablo, offering timeless craftsmanship and refined country club living. Backing directly to the fairways of Diablo Country Club with a private entry with fountain, manicured lawn, and pergola-framed porch sets the tone. Inside, soaring 12-foot ceilings and curated interiors blend warmth and elegance. The chef’s kitchen features marble surfaces and premium appliances, opening to the family room and custom bar, ideal for entertaining. Resort-style grounds include a pool and spa, pool house with sauna, pavilion with full kitchen and fireplace, fire pit, potting shed, and expansive golf course views. The home also offers a custom wine cellar, media room, playroom, bonus room, and private office. The primary suite includes patio access, walk-in closet, and spa-like bath. An upstairs au pair suite with separate entrance provides flexibility. Prime location near Diablo Country Club, trails, downtown Danville, top-rated schools, and freeway access.
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Home Details
Home Type
- Single Family
Year Built
- Built in 2003
Lot Details
- 36,020 Sq Ft Lot
- Front Yard
Parking
- 6 Car Direct Access Garage
Home Design
- Custom Home
- Composition Shingle Roof
- Wood Shingle Exterior
Interior Spaces
- 2-Story Property
- Fireplace With Gas Starter
- Family Room with Fireplace
- 2 Fireplaces
- Living Room with Fireplace
- Security Gate
Kitchen
- Updated Kitchen
- Double Oven
- Gas Range
- Microwave
- Dishwasher
Flooring
- Wood
- Carpet
Bedrooms and Bathrooms
- 6 Bedrooms
Laundry
- Dryer
- Washer
Pool
- Gas Heated Pool
- Pool Cover
Utilities
- Zoned Heating and Cooling System
- Well
- Gas Water Heater
Community Details
- No Home Owners Association
- Diablo C.C. Subdivision
Listing and Financial Details
- Assessor Parcel Number 1951920121
Ownership History
We collect this data history from publicly available records. To have your information removed, we recommend requesting removal directly through your county’s website.
Date
Name
Owned For
Owner Type
Purchase Details
Listed on
Jan 28, 2026
Closed on
Feb 5, 2026
Sold by
Jones Mark and Mark S Jones 1999 Trust
Bought by
Seller's Agent
Mary Bonham
The Agency
Buyer's Agent
Elise Fornaci
Compass
List Price
$9,750,000
Sold Price
$11,250,000
Premium/Discount to List
$1,500,000
15.38%
Views
85
Current Estimated Value
Home Financials for this Owner
Home Financials are based on the most recent Mortgage that was taken out on this home.
Estimated Appreciation
-$2,893,543
Avg. Annual Appreciation
-41.77%
Purchase Details
Closed on
Aug 1, 2015
Sold by
Polizzi Joseph and Polizzi Rosalia
Bought by
Jones Mark and 1999 Mark S Jones Trust
Purchase Details
Closed on
Nov 24, 2014
Sold by
Jones Mark S
Bought by
Jones Mark S and Mark S Jones 1999 Trust
Home Financials for this Owner
Home Financials are based on the most recent Mortgage that was taken out on this home.
Original Mortgage
$990,000
Interest Rate
2.87%
Mortgage Type
New Conventional
Purchase Details
Closed on
Mar 25, 2011
Sold by
Jones Mark S
Bought by
Jones Mark S
Home Financials for this Owner
Home Financials are based on the most recent Mortgage that was taken out on this home.
Original Mortgage
$1,076,000
Interest Rate
3.65%
Mortgage Type
Adjustable Rate Mortgage/ARM
Purchase Details
Closed on
Sep 15, 2009
Sold by
Jones Shannon
Bought by
Jones Mark S
Purchase Details
Closed on
Mar 4, 2008
Sold by
Jones Mark S
Bought by
Jones Mark S
Home Financials for this Owner
Home Financials are based on the most recent Mortgage that was taken out on this home.
Original Mortgage
$1,100,000
Interest Rate
5.62%
Mortgage Type
New Conventional
Purchase Details
Closed on
Feb 14, 2007
Sold by
Jones Mark S
Bought by
Jones Mark S and 1999 Mark S Jones Trust
Purchase Details
Closed on
Sep 8, 2006
Sold by
Jones Shannon
Bought by
Jones Mark S
Home Financials for this Owner
Home Financials are based on the most recent Mortgage that was taken out on this home.
Original Mortgage
$20,000
Interest Rate
6.51%
Mortgage Type
Credit Line Revolving
Purchase Details
Closed on
Aug 28, 2006
Sold by
Polizzi Joseph P and Bagnarol Polizzi Rosalia T
Bought by
Jones Mark S
Home Financials for this Owner
Home Financials are based on the most recent Mortgage that was taken out on this home.
Original Mortgage
$20,000
Interest Rate
6.51%
Mortgage Type
Credit Line Revolving
Purchase Details
Closed on
Aug 12, 2005
Sold by
Polizzi Joseph P and Bagnarol Polizzi Rosalia T
Bought by
Polizzi Joseph P
Home Financials for this Owner
Home Financials are based on the most recent Mortgage that was taken out on this home.
Original Mortgage
$2,750,000
Interest Rate
5.12%
Mortgage Type
New Conventional
Purchase Details
Closed on
Mar 25, 2005
Sold by
Polizzi Joseph P and Bagnarol Polizzi Rosalia T
Bought by
Polizzi Joseph P
Home Financials for this Owner
Home Financials are based on the most recent Mortgage that was taken out on this home.
Original Mortgage
$3,500,000
Interest Rate
5.5%
Mortgage Type
New Conventional
Purchase Details
Closed on
Nov 30, 2004
Sold by
Polizzi Joseph P and Bagnarol Polizzi Rosalia T
Bought by
Polizzi Joseph P
Home Financials for this Owner
Home Financials are based on the most recent Mortgage that was taken out on this home.
Original Mortgage
$3,000,000
Interest Rate
3.5%
Mortgage Type
New Conventional
Purchase Details
Closed on
Apr 28, 2004
Sold by
Polizzi Joseph P
Bought by
Polizzi Joseph P and Bagnarol Polizzi Rosalia T
Purchase Details
Closed on
Jan 30, 2004
Sold by
Polizzi Joseph P and Bagnarol Polizzi Rosalia T
Bought by
Polizzi Joseph P
Home Financials for this Owner
Home Financials are based on the most recent Mortgage that was taken out on this home.
Original Mortgage
$3,250,000
Interest Rate
5.5%
Mortgage Type
New Conventional
Purchase Details
Closed on
Apr 16, 2002
Sold by
Saur Harold K
Bought by
Polizzi Joseph P
Home Financials for this Owner
Home Financials are based on the most recent Mortgage that was taken out on this home.
Original Mortgage
$2,156,250
Interest Rate
6.87%
Mortgage Type
Stand Alone First
Home Values in the Area
Average Home Value in this Area
Agents Specializing in Diablo, CA
-
Mike Kavanaugh
-
Sangeet Kumar
SK
Sangeet Kumar
Sparrow Pacific Homes
(510) 660-0561
18 Total Sales
1 in Diablo
$3,400,000 Price
-
Tonya Colton
Tonya Colton
Notable Real Estate
(925) 396-4568
74 Total Sales
2 in Diablo
$1.9M - $2.1M Price Range
-
Rachael Hand
Rachael Hand
Hand Real Estate
(925) 940-8937
39 Total Sales
2 in Diablo
$2,450,000 Price Range
-
Michelle Lewis
Michelle Lewis
Coldwell Banker Realty
(925) 396-7237
24 Total Sales
1 in Diablo
$1,349,000 Price
-
Rick Rodriguez
Rick Rodriguez
Core One Real Estate & Mgmt.
(925) 320-3862
28 Total Sales
3 in Diablo
$1,435,000 Price Range
Purchase History
We collect this data history from publicly available records. To have your information removed, we recommend requesting removal directly through your county’s website.
| Date | Buyer | Sale Price | Title Company |
|---|---|---|---|
| $11,250,000 | Fidelity National Title Compan | ||
| Jones Mark | -- | None Available | |
| Jones Mark S | -- | Old Republic Title Company | |
| Jones Mark S | -- | Fidelity National Title Co | |
| Jones Mark S | -- | Fidelity National Title Co | |
| Jones Mark S | -- | Fidelity National Title Co | |
| Jones Mark S | -- | Fidelity National Title Co | |
| Jones Mark S | -- | Fidelity National Title Co | |
| Jones Mark S | -- | First American Title Company | |
| Jones Mark S | -- | First American Title Company | |
| Jones Mark S | -- | First American Title Co | |
| Jones Mark S | -- | First American Title Co | |
| Jones Mark S | -- | First American Title Co | |
| Polizzi Joseph P | -- | First American Title | |
| Polizzi Joseph P | -- | First American Title | |
| Polizzi Joseph P | -- | First American Title | |
| Polizzi Joseph P | -- | First American Title | |
| Polizzi Joseph P | -- | First American Title | |
| Polizzi Joseph P | -- | First American Title | |
| Polizzi Joseph P | -- | First American Title Co | |
| Polizzi Joseph P | -- | First American Title | |
| Polizzi Joseph P | $2,350,000 | First American Title Company |
Source: Public Records
Mortgage History
We collect this data history from publicly available records. To have your information removed, we recommend requesting removal directly through your county’s website.
| Date | Status | Borrower | Loan Amount |
|---|---|---|---|
| Previous Owner | $5,000,000 | ||
| Previous Owner | Jones Mark S | $990,000 | |
| Previous Owner | Jones Mark S | $900,000 | |
| Previous Owner | Jones Mark S | $1,076,000 | |
| Previous Owner | Jones Mark S | $900,000 | |
| Previous Owner | Jones Mark S | $1,100,000 | |
| Previous Owner | Jones Mark S | $20,000 | |
| Previous Owner | Jones Mark S | $2,980,000 | |
| Previous Owner | Polizzi Joseph P | $2,750,000 | |
| Previous Owner | Polizzi Joseph P | $3,500,000 | |
| Previous Owner | Polizzi Joseph P | $3,000,000 | |
| Previous Owner | Polizzi Joseph P | $3,250,000 | |
| Previous Owner | Polizzi Joseph P | $250,000 | |
| Previous Owner | Polizzi Joseph P | $2,156,250 | |
| Previous Owner | Saur Harold K | $100,000 |
Source: Public Records
Property History
We collect this data history from publicly available records. To have your information removed, we recommend requesting removal directly through your county’s website.
| Date | Event | Price | List to Sale | Price per Sq Ft |
|---|---|---|---|---|
| 02/12/2026 02/12/26 | Sold | $11,250,000 | +15.4% | $1,404 / Sq Ft |
| 02/01/2026 02/01/26 | Pending | -- | -- | -- |
| 01/28/2026 01/28/26 | For Sale | $9,750,000 | -- | $1,217 / Sq Ft |
Source: Contra Costa Association of REALTORS®
Tax History
We collect this data history from publicly available records. To have your information removed, we recommend requesting removal directly through your county’s website.
| Year | Tax Paid | Tax Assessment Tax Assessment Total Assessment is a certain percentage of the fair market value that is determined by local assessors to be the total taxable value of land and additions on the property. | Land | Improvement |
|---|---|---|---|---|
| 2026 | $64,277 | $6,943,999 | $2,733,166 | $4,210,833 |
| 2025 | $64,277 | $5,779,000 | $2,274,621 | $3,504,379 |
| 2024 | $60,596 | $5,686,000 | $2,238,016 | $3,447,984 |
| 2023 | $60,596 | $5,421,000 | $2,133,712 | $3,287,288 |
| 2022 | $56,615 | $4,995,500 | $1,966,235 | $3,029,265 |
| 2021 | $54,753 | $4,836,000 | $1,800,000 | $3,036,000 |
| 2019 | $48,719 | $4,241,000 | $1,669,263 | $2,571,737 |
| 2018 | $47,499 | $4,212,000 | $1,657,849 | $2,554,151 |
| 2017 | $44,818 | $4,045,000 | $1,592,118 | $2,452,882 |
| 2016 | $43,641 | $3,900,000 | $1,535,046 | $2,364,954 |
| 2015 | -- | $3,590,000 | $1,413,029 | $2,176,971 |
| 2014 | $40,408 | $3,369,000 | $1,326,044 | $2,042,956 |
Source: Public Records
Agents Affiliated with this Home
-
Mary Bonham
Seller's Agent in 2026
Mary Bonham
The Agency
(925) 997-1787
79 Total Sales
-
Erin Carrigg
Seller Co-Listing Agent in 2026
Erin Carrigg
The Agency
(925) 360-4420
62 Total Sales
-
Elise Fornaci
Buyer's Agent in 2026
Elise Fornaci
Compass
(925) 708-0700
66 Total Sales
Map
Source: Contra Costa Association of REALTORS®
MLS Number: 41122305
APN: 195-192-012-1
Disclaimer: Certain information contained herein is derived from information provided by parties other than Homes.com. All information provided is deemed reliable, but is not guaranteed to be accurate and should be independently verified.
Bay East ©2026. BridgeMLS ©2026, CCAR ©2026. Information Deemed Reliable But Not Guaranteed. This information is being provided by the Bay East MLS, BridgeMLS or CCAR MLS. The listings presented here may or may not be listed by the Broker/Agent operating this website. This information is intended for the personal use of consumers, and may not be used for any purpose other than to identify prospective properties consumers may be interested in purchasing.
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