NOT LISTED FOR SALE

3501 Byer Rd Byron, CA 94514

East Contra Costa Neighborhood

Estimated Value: $4,960,000 - $5,918,675

4 Beds
4 Baths
4,498 Sq Ft
$1,208/Sq Ft Est. Value

Sale Details

Date Sold: February 2, 2026

Last sale price $5,000,000 $1,112 Per Sq Ft

Est. 9% increase in value since last sale

Current estimated payment $34,925 / mo

128 Days on Market

Highlights

  • Solar Heated Pool and Spa
  • Solar Power System
  • 44 Acre Lot
  • Discovery Bay Elementary School Rated A-
  • Updated Kitchen
  • Vineyard

About This Home

As of February 2026

Test Stay This Opulence. Nestled on 44 acres of rolling countryside, this 4,498 sq ft custom estate offers a lifestyle where luxury meets legacy. Featuring 4 bedrooms and 4 spa-inspired bathrooms, every inch of the home has been artfully designed with bespoke finishes, soaring ceilings, and timeless elegance. At its heart, 30 acres of thriving grapevines and 5 acres of flourishing olive trees create the perfect vineyard retreat for the discerning wine and olive oil connoisseur. A remarkable 7,855 sq ft event center and tasting room elevate the property into a destination, offering endless opportunities for hosting gatherings both intimate and grand. For those who crave recreation, the estate boasts its very own “Field of Dreams” baseball diamond—whimsical yet refined—seamlessly blending leisure with sophistication. Car enthusiasts will revel in the expansive 5,282 sq ft of garage space, while 2,295 sq ft of covered porches and loggias invite relaxation amidst breathtaking views of vineyards, olive groves, and open skies. Every element has been thoughtfully crafted to combine elegance, function, and charm, creating an unmatched sanctuary that is as inspiring as it is inviting. This is more than a home—it’s a legacy estate, an experience, and a lifestyle waiting to be embraced.

Last Agent to Sell the Property

Ginamarie Olson

WR Properties License #02226206 Listed on: 09/11/2025

Co-Listed By

Wes Olson

WR Properties License #01248834

Last Buyer's Agent

Ginamarie Olson

WR Properties License #02226206 Listed on: 09/11/2025

Home Details

Home Type

  • Single Family

Year Built

  • Built in 2006

Lot Details

  • 44 Acre Lot
  • Dog Run
  • Fenced
  • Landscaped
  • Premium Lot
  • Sprinklers Throughout Yard
  • Sprinklers on Timer
  • Garden
  • Back and Front Yard
  • Property is zoned A40

Parking

  • 2 Car Attached Garage
  • Garage Door Opener

Home Design

  • Craftsman Architecture
  • French Country Architecture
  • Farmhouse Style Home
  • Spanish Architecture
  • Wood Siding

Interior Spaces

  • 4,498 Sq Ft Home
  • 2-Story Property
  • Sound System
  • Two Way Fireplace
  • Stone Fireplace
  • Brick Fireplace
  • Gas Fireplace
  • Window Treatments
  • Family Room with Fireplace
  • 3 Fireplaces
  • Living Room with Fireplace
  • Formal Dining Room
  • Home Office
  • Storage

Kitchen

  • Updated Kitchen
  • Breakfast Area or Nook
  • Eat-In Kitchen
  • Breakfast Bar
  • Self-Cleaning Oven
  • Gas Range
  • Microwave
  • Dishwasher
  • Stone Countertops
  • Disposal

Flooring

  • Carpet
  • Tile

Bedrooms and Bathrooms

  • 4 Bedrooms
  • Fireplace in Primary Bedroom
  • Walk-In Closet
  • Mirrored Closets Doors
  • Remodeled Bathroom
  • Maid or Guest Quarters
  • In-Law or Guest Suite
  • 4 Full Bathrooms
  • Dual Vanity Sinks in Primary Bathroom
  • Jetted Tub in Primary Bathroom
  • Primary Bathroom Bathtub Only

Laundry

  • Laundry Room
  • Dryer
  • Washer
  • Sink Near Laundry
  • Laundry Cabinets

Home Security

  • Security System Owned
  • Security Gate
  • Fire and Smoke Detector
  • Fire Sprinkler System

Eco-Friendly Details

  • Solar Power System
  • Solar owned by seller
  • Solar owned by a third party
  • Solar Water Heater
  • Solar Heating System

Pool

  • Solar Heated Pool and Spa
  • Solar Heated In Ground Pool
  • Heated Spa
  • Pool Cover

Outdoor Features

  • Terrace
  • Covered Courtyard
  • Shed

Farming

  • Vineyard
  • Agricultural

Utilities

  • Central Air
  • Heating Available
  • 220 Volts
  • Power Generator
  • Water Filtration System
  • Private Water Source
  • Well
  • Storage Tank
  • Gas Water Heater
  • Water Softener
  • Septic Tank
  • Private Sewer
  • Internet Available
  • Cable TV Available

Community Details

  • No Home Owners Association
  • Delta Association
  • Discovery Bay Subdivision

Home Details

Home Type

Single Family

Year Built

Built in 2006

Lot Details

44 Acres

Parking

2

Listing Details

  • Property Sub Type: Single Family Residence
  • Property Type: Residential
  • Fencing: Fenced
  • Lot Features: Agricultural, Premium Lot, Vineyard, Back Yard, Front Yard, Landscaped, Security Gate, Sprinklers In Rear
  • LotSizeAcres: 44
  • Spa Features: Heated
  • Has Spa?: Yes
  • Security Features: Fire Sprinkler System, Security Alarm - Leased, Double Strapped Water Heater, Security Gate, Security System Owned, Smoke Detector(s), Closed Circuit Camera(s)
  • Has HOA?: No
  • Co List Office Mls Id: BAR33662
  • Co List Office Mls Id: DMCCG
  • Special Conditions: Offer As Is
  • Subdivision Name: DISCOVERY BAY
  • Directions: Byron/ Byron Rd
  • Architectural Style: Craftsman, Farm House, French Country, Spanish
  • Has Cooling?: Yes
  • Has Fireplace?: Yes
  • Living Area: 4498
  • Is New Construction?: No
  • Year Built: 2006
  • Power Production Type: Photovoltaics
  • Special Features: VirtualTour

Interior Features

  • Appliances: Dishwasher, Gas Range, Microwave, Refrigerator, Self Cleaning Oven, Dryer, Washer, Water Filter System, Gas Water Heater, Solar Hot Water, Water Softener
  • Full Bathrooms: 4
  • Total Bedrooms: 4
  • Door Features: Mirrored Closet Door(s)
  • Fireplace Features: Brick, Family Room, Gas, Living Room, Master Bedroom, Stone, Two-Way
  • Fireplaces: 3
  • Flooring: Tile, Carpet
  • Interior Amenities: Au Pair, Den, Dining Area, Family Room, Formal Dining Room, In-Law Floorplan, Office, Storage, Study, Breakfast Bar, Breakfast Nook, Pantry, Updated Kitchen, Sound System
  • Stories: 2
  • Window Features: Window Coverings
  • Primary Bath Includes:: Tub, Tub with Jets, Updated Baths, Double Vanity, Walk-In Closet(s)
  • RoomKitchenFeatures: Breakfast Bar, Breakfast Nook, Stone Counters, Dishwasher, Eat-in Kitchen, Disposal, Gas Range/Cooktop, Microwave, Pantry, Refrigerator, Self-Cleaning Oven, Updated Kitchen

Exterior Features

  • Pool Features: In Ground, Pool Cover, Pool/Spa Combo, Solar Heat
  • Has Private Pool?: Yes
  • Construction Type: Wood Siding
  • Exterior Features: Back Yard, Dog Run, Front Yard, Garden/Play, Sprinklers Automatic, Sprinklers Front, Sprinklers Side, Storage, Terraced Back, Terraced Up, Covered Courtyard
  • Other Structures: Shed(s)
  • Property Condition: Existing

Garage/Parking

  • Has Attached Garage?: No
  • Has Carport?: No
  • Covered Parking Spaces: 2
  • Garage Spaces: 2
  • Has Attached Garage?: Yes
  • Parking Features: Attached, Garage Door Opener

Utilities

  • Laundry Features: 220 Volt Outlet, Dryer, Gas Dryer Hookup, Laundry Room, Washer, Cabinets, Inside, Inside Room, Sink
  • Cooling: Central Air
  • Heating: Solar
  • Heating Yn: Yes
  • Electric: Photovoltaics Seller Owned, Photovoltaics Third-Party Owned, Generator
  • Electricity On Property: Yes
  • Sewer: Septic Tank, Private Sewer
  • Utilities: Cable Available, Internet Available
  • Water Source: Storage Tank, Private, Well

Condo/Co-op/Association

  • Association Name: DELTA

Schools

  • Junior High Dist: Brentwood (925) 513-6300

Lot Info

  • Lot Size Sq Ft: 1916640
  • Zoning: A40

Matterport 3D Tour

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
Sep 11, 2025
Closed on
Jan 27, 2026
Sold by
Bought by
Seller's Agent
Ginamarie Olson
WR Properties
Buyer's Agent
Ginamarie Olson
WR Properties
List Price
$6,998,000
Sold Price
$5,000,000
Premium/Discount to List
-$1,998,000
-28.55%
Views
183
Current Estimated Value
$5,433,892

Home Financials for this Owner

Home Financials are based on the most recent Mortgage that was taken out on this home.
Estimated Appreciation
$433,892
Avg. Annual Appreciation
29.70%
Original Mortgage
$3,250,000
Outstanding Balance
$3,250,000
Interest Rate
6.21%
Mortgage Type
New Conventional
Estimated Equity
$2,183,892

Purchase Details

Listed on
Sep 11, 2025
Closed on
Jan 16, 2026
Sold by
Bought by
Seller's Agent
Ginamarie Olson
WR Properties
Buyer's Agent
Ginamarie Olson
WR Properties
List Price
$6,998,000
Sold Price
$5,000,000
Premium/Discount to List
-$1,998,000
-28.55%
Views
183

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
Outstanding Balance
$3,250,000
Interest Rate
6.21%
Mortgage Type
New Conventional
Estimated Equity
$2,183,892

Purchase Details

Closed on
Feb 21, 2019
Sold by
Bought by

Home Financials for this Owner

Home Financials are based on the most recent Mortgage that was taken out on this home.
Original Mortgage
$4,741,145
Interest Rate
4.4%
Mortgage Type
Commercial

Purchase Details

Closed on
Jun 9, 2016
Sold by
Bought by

Home Financials for this Owner

Home Financials are based on the most recent Mortgage that was taken out on this home.
Original Mortgage
$850,150
Interest Rate
3.73%
Mortgage Type
Unknown

Purchase Details

Closed on
May 23, 2012
Sold by
Bought by

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
3.85%
Mortgage Type
Seller Take Back

Purchase Details

Closed on
Mar 20, 2012
Sold by
Bought by

Purchase Details

Closed on
Jun 10, 2004
Sold by
Bought by

Purchase Details

Closed on
Jul 14, 2000
Sold by
Bought by

Purchase Details

Closed on
Apr 8, 1999
Sold by
Bought by
Source: Public Records

Range of Values:

--
Value Increase
--
Percent Increase
--
Adjusted for Inflation
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Average Value
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List Price
Sold Price
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Home Values in the Area

Source: Public Records

Average Home Value in this Area

Source: Public Records

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
-- Chicago Title
$5,000,000 Chicago Title
-- Chicago Title Company
$5,000,000 Chicago Title Company
$3,350,000 Chicago Title Company
$1,800,000 Fidelity National Title Co
-- None Available
-- None Available
-- None Available
-- None Available
-- None Available
$616,000 North American Title
-- --
-- --
-- North American Title Co
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
Open $3,250,000
Previous Owner $4,741,145
Previous Owner $850,150
Previous Owner $3,995,000
Previous Owner $1,000,000
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
02/02/2026 02/02/26 Sold $5,000,000 -28.6% $1,112 / Sq Ft
01/17/2026 01/17/26 Pending -- -- --
09/11/2025 09/11/25 For Sale $6,998,000 -- $1,556 / Sq Ft
Source: bridgeMLS

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
2025 $67,588 $6,152,031 $1,251,863 $4,900,168
2024 $65,385 $6,031,404 $1,227,317 $4,804,087
2023 $64,413 $5,913,142 $1,203,252 $4,709,890
2022 $60,994 $5,577,591 $1,179,659 $4,397,932
2021 $59,438 $5,468,228 $1,156,529 $4,311,699
2019 $58,856 $5,306,039 $1,122,227 $4,183,812
2018 $56,746 $5,202,000 $1,100,223 $4,101,777
2017 $55,911 $5,100,000 $1,078,650 $4,021,350
2016 $16,992 $1,575,643 $560,229 $1,015,414
2015 $16,904 $1,551,976 $551,814 $1,000,162
2014 $16,646 $1,521,576 $541,005 $980,571
Source: Public Records

Agents Affiliated with this Home

  • G

    Seller's Agent in 2026

    Ginamarie Olson

    WR Properties

  • W

    Seller Co-Listing Agent in 2026

    Wes Olson

    WR Properties

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Map

Source: bridgeMLS

MLS Number: 41111190

bridgeMLS

APN: 002-010-016-0

California Contra Costa County Byron 94514 East Contra Costa

3501 Byer Rd, Byron, 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.

bridgeMLS Bay East 2026. CCAR 2026. bridgeMLS 2026. Information Deemed Reliable But Not Guaranteed. This information is being provided by the Bay East MLS, or CCAR MLS, or bridgeMLS. 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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