NOT LISTED FOR SALE

7 County Oak Ln Alamo, CA 94507

Estimated Value: $2,542,000 - $26,234,409

11 Beds
22 Baths
21,241 Sq Ft
$677/Sq Ft Est. Value

About This Home

This home is located at 7 County Oak Ln, Alamo, CA 94507 and is currently estimated at $14,388,205, approximately $677 per square foot. 7 County Oak Ln is a home located in Contra Costa County with nearby schools including Green Valley Elementary School, Los Cerros Middle School, and Monte Vista High School.

Ownership History

Date Name Owned For Owner Type

Purchase Details

Closed on
Feb 7, 2026
Sold by
Almendral Diversified Investments Lp
Bought by
Country Oak Investments Llc
Current Estimated Value
$14,388,205

Purchase Details

Closed on
Aug 18, 2020
Sold by
The Duffield Family Foundation
Bought by
Almendral Diversified Investments Lp

Purchase Details

Closed on
Sep 28, 2015
Sold by
Lake Tahoe Land Company Llc
Bought by
The Duffield Family Foundation

Purchase Details

Closed on
Dec 2, 2008
Sold by
East Bay Regionalpark District
Bought by
Lake Tahoe Land Company Llc

Purchase Details

Closed on
Mar 8, 2005
Sold by
Biestman Mark S and Biestman Karen W
Bought by
Lake Tahoe Land Co Llc

Purchase Details

Closed on
Jun 22, 2000
Sold by
Hoffman Mark B & Susan A Tre
Bought by
Biestman Mark S and Biestman Karen W

Home Financials for this Owner

Home Financials are based on the most recent Mortgage that was taken out on this home.
Original Mortgage
$1,000,000
Interest Rate
7.92%
Mortgage Type
Purchase Money Mortgage
Source: Public Records

Range of Values:

--
Value Increase
--
Percent Increase
--
Adjusted for Inflation
Collateral Analytics

Collateral Analytics Collateral Analytics AVMs (Automated Valuation Model) employ a number of statistical approaches combined with neighborhood-specific comparable selection guarantees the most up-to-date and precise valuations.

Not Available

Collateral Analytics does not have data for the current month. Please view the chart for historical values.

ICE

ICE Mortgage Technology ICE Mortgage Technology’s AVM (Automated Valuation Model) is a state-of-the-art online residential property valuation tool that provides a quick and accurate estimate of the value of almost any home in the U.S.

Not Available

ICE Mortgage Technology does not have data for the current month. Please view the chart for historical values.

First American

First American First American Data & Analytics’ next-generation AVM combines unrivaled data assets with a blended ensemble of valuation models to produce highly accurate, reliable valuations you can trust.

Not Available

First American does not have data for the current month. Please view the chart for historical values.

Quantarium

Quantarium Quantarium’s valuation service, repeatedly proven the industry’s most accurate and comprehensive, is supercharged with a self-learning and auto-tuning AI engine that continually becomes smarter and more accurate as it processes daily inputs from the industry’s leading RE data lake.

Not Available

Quantarium does not have data for the current month. Please view the chart for historical values.

Average Value
Not Available
List Price
Sold Price
Create a Home Valuation Report for This Property
The Home Valuation Report is an in-depth analysis detailing your home's value as well as a comparison with similar homes in the area

Home Values in the Area

Source: Public Records

Average Home Value in this Area

Source: Public Records

Purchase History

Date Buyer Sale Price Title Company
Country Oak Investments Llc -- None Listed On Document
Almendral Diversified Investments Lp $19,000,000 Fidelity National Title Co
The Duffield Family Foundation -- None Available
Lake Tahoe Land Company Llc -- Fidelity National Title
Lake Tahoe Land Co Llc -- Fidelity National Title
Biestman Mark S $6,000,000 Chicago Title Co
Source: Public Records

Mortgage History

Date Status Borrower Loan Amount
Previous Owner Biestman Mark S $1,000,000
Source: Public Records

Tax History

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
2025 $223,977 $20,566,209 $6,819,322 $13,746,887
2024 $216,365 $20,162,951 $6,685,610 $13,477,341
2023 $216,365 $19,767,600 $6,554,520 $13,213,080
2022 $215,092 $19,380,000 $6,426,000 $12,954,000
2021 $210,637 $19,000,000 $6,300,000 $12,700,000
2019 $297,267 $26,530,200 $9,550,872 $16,979,328
2018 $286,190 $26,010,000 $9,363,600 $16,646,400
2017 $275,942 $25,500,000 $9,180,000 $16,320,000
2016 $273,316 $25,000,000 $9,000,000 $16,000,000
2015 $219,900 $20,000,000 $6,000,000 $14,000,000
2014 $219,900 $23,000,000 $7,000,000 $16,000,000
Source: Public Records

Map

California Contra Costa County Alamo 94507

7 County Oak Ln, Alamo, CA

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.

Nearby Homes
Your Personal Tour Guide

Ask me questions while you tour the home.