BOUGHT WITH REDFIN MAR 22, 2024

Off market mar 2024 for $6M

$6,087,355

Est. refi paymentEst. refi $41,203/mo

•

6,890

sq ft

3666 Happy Valley Rd, Lafayette, CA 94549

About this home

Contemporary luxury meets transitional refinement on this approximately 1.5 acre flat “lot of your dreams” nestled in coveted Happy Valley. Sophisticated modern double doors welcome you into an impressive entry with a glass, temperature-controlled 324 bottle wine room, soaring wood beamed ceilings & custom entertaining bar. A state-of-the-art kitchen with honed Estremos Portuguese marble partners with an exquisite, light filled adjacent formal dining room. Entertainment spaces abound with a family room and top floor bonus room boasting a fully-equipped theater, separated snack bar with beverage refrigerators & adjacent guest suite with its own entrance. A primary retreat showcases a luxurious Calacatta marble bathroom and leads to a private patio with tranquil fountain & separate studio. Three secondary bedrooms each with newly designed en suite bathrooms. A guest cottage features an on-trend kitchen, laundry, bed/bath & living space. The resort style yard is centered around an over-sized pool/spa surrounded by 360-degree shade umbrellas, built-in pavilion, fire table, outdoor bathroom, sport court, bocce ball, Zen Garden, play structure, dramatic fountains, mature gardens & well. Minutes from Highway 24, trails, BART, award winning schools & downtown Lafayette.

Single-familyProperty Type

1950Year Built

1.47 acresLot Size

$884Est. Price/Sq.Ft.

3 car garageParking

Buyer's agent

Kelley Krock DRE #01896209Redfin

Listed by Julie Dudum Del Santo •DRE #01290985 • Dudum Real Estate Group

Listed by Lisa Tichenor •DRE #01478540 • Dudum Real Estate Group

Redfin checked: 2 minutes ago

•Source:bridgeMLS, Bay East AOR, or Contra Costa AOR #41050802

Redfin Estimate

$6,087,355

$37K since sold in March 2024$153K since September

Recently sold homes
Estimate history
Homes for sale

This home's estimate is 14.5% higher than the average sale price ($5.32M) of 6 comparable homes.

SOLD AUG 21, 2026
$4,250,000
A
4 beds3.5 baths3,399 sq ft
3814 Happy Valley Rd, Lafayette, CA 94549
SOLD JUN 1, 2026
$9,600,108
B
6 beds6 baths5,270 sq ft
3958 S Peardale Dr, Lafayette, CA 94549
SOLD JUL 9, 2026
$4,800,000
C
4 beds3.5 baths4,511 sq ft
1165 Glen Rd, Lafayette, CA 94549
SOLD AUG 26, 2026
$4,800,000
D
4 beds3.5 baths4,033 sq ft
3954 S Peardale Dr, Lafayette, CA 94549
SOLD SEP 9, 2026
$3,550,000
E
5 beds3.5 baths3,890 sq ft
3907 Happy Valley Rd, Lafayette, CA 94549
SOLD FEB 17, 2026
$4,900,000
F
6 beds5 baths5,450 sq ft
3957 Rancho Rd, Lafayette, CA 94549

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Earn from this home

Sell

$1,150,769

Est. take-home

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Refinance

Est. cash available

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Rent

$9,947/mo

Redfin rental estimate

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Market trends in 94549, CA

Last updated September 2026

Buyer's Market

Seller's Market

Seller's market

Sale-to-List Price

101.8%

0.2% MoM

Median sale price

$2.0M

$26K MoM

Avg. days on market

17d

2 days MoM

Recently sold homes

103

4 MoM

New listings for sale

OPEN SUN, 1PM TO 4PM
$3,495,000
4 beds3.5 baths3,896 sq ft
3336 Las Huertas Rd, Lafayette, CA 94549
EARLY ACCESS
$2,895,000
4 beds4 baths3,380 sq ft
932 Reliez Station Rd, Lafayette, CA 94549
COMING SOON
$1,953,300
5 beds5 baths3,322 sq ft
3822 Quail Ridge Rd, Lafayette, CA 94549
EARLY ACCESS
$1,675,000
4 beds3 baths1,999 sq ft
3384 Deer Hill Rd, Lafayette, CA 94549
OPEN SAT, 2PM TO 5PM
$1,699,000
3 beds2 baths1,956 sq ft
3149 Indian Way, Lafayette, CA 94549
$1,599,946
4 beds3 baths2,336 sq ft
3151 La Playa Ct, Lafayette, CA 94549
OPEN SAT, 1PM TO 4PM
$1,688,000
3 beds2.5 baths2,107 sq ft
3364 Walnut Ln, Lafayette, CA 94549
$1,350,000
3 beds2 baths1,240 sq ft
1132 Sunset Loop, Lafayette, CA 94549
$2,199,999
4 beds3 baths3,074 sq ft
945 Stow Ln, Lafayette, CA 94549
HOT HOME
$2,695,000
3 beds2.5 baths2,687 sq ft
714 Glenside Cir, Lafayette, CA 94549
See all

Provided by Redfin

Redfin agents who toured

Gorgeous inside and out. Lots of thoughtful finishes and unbelievable backyard with the stone pavers high and finishes the back yard. Casita is two separate rooms but could be combined for a large proper pool house. Amazing secondary apartment/wing...
3 years ago• May not reflect the current state of the home
Kelley Krock
Redfin Premier agent
The backyard is incredible!
3 years ago• May not reflect the current state of the home
Laura J. Johnson
Redfin agent

Sale history for 3666 Happy Valley Rd

Date

Event

Price

bridgeMLS, Bay East AOR, or Contra Costa AOR #41050802

Mar 22, 2024

Sold

$6,050,000

$878/sq ft

Mar 10, 2024

Pending

—

Feb 23, 2024

Listed

$6,250,000

$907/sq ft

bridgeMLS, Bay East AOR, or Contra Costa AOR #41027370

Nov 29, 2023

Listing Removed

—

bridgeMLS, Bay East AOR, or Contra Costa AOR #40988846

Aug 2, 2022

Listing Removed

—

bridgeMLS, Bay East AOR, or Contra Costa AOR #40690379

Apr 7, 2015

Sold

$4,100,000

$595/sq ft

Mar 24, 2015

Pending

—

Mar 12, 2015

Listed

$3,995,000

$580/sq ft

bridgeMLS, Bay East AOR, or Contra Costa AOR #11110377

Oct 1, 2001

Sold

$2,550,000

$370/sq ft

Sep 6, 2001

Listing Removed

—

Aug 27, 2001

Listed

$2,595,000

$377/sq ft

bridgeMLS, Bay East AOR, or Contra Costa AOR #21027345

Aug 29, 2001

Listing Removed

—

bridgeMLS, Bay East AOR, or Contra Costa AOR #11105103

Aug 26, 2001

Listing Removed

—

bridgeMLS, Bay East AOR, or Contra Costa AOR #11099262

Jul 23, 2001

Listing Removed

—

Public Records

Apr 11, 1997

Sold

$879,500

$128/sq ft

Year

Property tax

Land + Additions

Assessment*

2025

$69,144 (+25.9%)

$3,641,400 + $2,653,020

$6,294,420

2024

$54,932 (+1.7%)

$3,570,000 + $2,601,000

$6,171,000

2023

$54,025 (+1.5%)

$2,356,567 + $2,494,080

$4,850,647

2022

$53,209 (+3.0%)

$2,310,360 + $2,445,177

$4,755,537

2021

$51,670 (−0.7%)

$2,265,059 + $2,397,233

$4,662,292

2020

$52,027 (+1.6%)

$2,220,647 + $2,350,229

$4,570,876

2019

$51,221 (+4.1%)

$2,197,877 + $2,326,131

$4,524,008

2018

$49,210 (+1.7%)

$2,154,782 + $2,280,521

$4,435,303

2017

$48,366 (+1.7%)

$2,071,110 + $2,174,665

$4,245,775

2016

$47,549 (+58.5%)

$2,071,110 + $2,174,665

$4,245,775

2015

$30,000 (+4.9%)

$2,030,500 + $2,132,025

$4,162,525

2014

$28,586 (+0.9%)

$1,391,556 + $1,061,944

$2,453,500

2013

$28,331 (+1.1%)

$1,391,556 + $1,061,944

$2,453,500

2012

$28,015 (−2.2%)

$1,391,555 + $1,061,945

$2,453,500

2011

$28,658 (−0.5%)

$1,391,555 + $1,061,945

$2,453,500

2010

$28,793 (+7.0%)

$1,417,928 + $1,082,072

$2,500,000

2009

$26,902 (−9.1%)

$1,433,810 + $1,094,190

$2,528,000

2008

$29,592

$1,339,092 + $1,021,908

$2,361,000

Tax history for 3666 Happy Valley Rd

Year

Property tax

Land + Additions

Assessment*

2025

$69,144 (+25.9%)

$3,641,400 + $2,653,020

$6,294,420

2024

$54,932 (+1.7%)

$3,570,000 + $2,601,000

$6,171,000

2023

$54,025 (+1.5%)

$2,356,567 + $2,494,080

$4,850,647

2022

$53,209 (+3.0%)

$2,310,360 + $2,445,177

$4,755,537

2021

$51,670 (−0.7%)

$2,265,059 + $2,397,233

$4,662,292

2020

$52,027 (+1.6%)

$2,220,647 + $2,350,229

$4,570,876

2019

$51,221 (+4.1%)

$2,197,877 + $2,326,131

$4,524,008

2018

$49,210 (+1.7%)

$2,154,782 + $2,280,521

$4,435,303

2017

$48,366 (+1.7%)

$2,071,110 + $2,174,665

$4,245,775

2016

$47,549 (+58.5%)

$2,071,110 + $2,174,665

$4,245,775

2015

$30,000 (+4.9%)

$2,030,500 + $2,132,025

$4,162,525

2014

$28,586 (+0.9%)

$1,391,556 + $1,061,944

$2,453,500

2013

$28,331 (+1.1%)

$1,391,556 + $1,061,944

$2,453,500

2012

$28,015 (−2.2%)

$1,391,555 + $1,061,945

$2,453,500

2011

$28,658 (−0.5%)

$1,391,555 + $1,061,945

$2,453,500

2010

$28,793 (+7.0%)

$1,417,928 + $1,082,072

$2,500,000

2009

$26,902 (−9.1%)

$1,433,810 + $1,094,190

$2,528,000

2008

$29,592

$1,339,092 + $1,021,908

$2,361,000

*Taxable value of land and structures on it ("additions") is determined regularly by local assessors and does not affect market price.

Public record

Public record
Permits

Beds

Baths

Stories

Lot width

—

Lot depth

—

Lot size

1.47 Acres

Year renovated

2000

Sq. Ft.

5,179

Year built

1950

Style

Single Family Residential

County

Contra Costa County

APN

2441600067

Parking Spaces

—

Basement

—

Accessible

—

HOA Dues

—

Garage

—

Features

—

Last updated by owner on Jul 13, 2026.

Nov 22, 2024 • Final

Building - residential solar photovoltaic

Install a photovoltaic solar system with modules.

Electrical

Solar

Aug 21, 2024 • Active

Building - residential generator

Install a natural gas emergency backup generator.

Gas

Generator

Permit history is from public records and may be incomplete or inaccurate. Redfin and its agents make no representations about the property condition or permit status. Buyers should independently verify all information.

Property details

Parking

Parking Information
Has Attached Garage
Garage Spaces: 3
Covered Spaces: 3
Parking Features: Attached, Int Access From Garage, Off Street, RV/Boat Parking, Side Yard Access, Electric Vehicle Charging Station(s), Garage Faces Side, Garage Door Opener

Interior

Virtual Tour

Bathroom Information
# of Bathrooms Total: 8
# of Bathrooms Full: 7
# of Bathrooms Partial: 1

Interior Features
Interior Features: Bonus/Plus Room, Dining Area, Family Room, Formal Dining Room, In-Law Floorplan, Kitchen/Family Combo, Media, Storage, Breakfast Bar, Stone Counters, Eat-in Kitchen, Kitchen Island, Pantry, Updated Kitchen, Wet Bar, Sound System
Appliances: Dishwasher, Double Oven, Disposal, Gas Range, Microwave, Refrigerator, Self Cleaning Oven, Dryer, Gas Water Heater, Tankless Water Heater
Laundry Features: 220 Volt Outlet, Dryer, Laundry Room, Washer, Cabinets, Sink
Upper Level Features: 1 Bedroom, 1 Bath
Street Level Features: 3 Bedrooms, 0.5 Bath, 4 Baths, Primary Bedrm Retreat, Main Entry
Window Features: Double Pane Windows, Screens, Window Coverings
Fireplaces Total: 3
Has Fireplace
Flooring: Hardwood Flrs Throughout, Tile, Carpet

Room Information
Kitchen Features: 220 Volt Outlet,Breakfast Bar,Counter - Stone,Dishwasher,Double Oven,Eat In Kitchen,Garbage Disposal,Gas Range/Cooktop,Island,Microwave,Pantry,Refrigerator,Self-Cleaning Oven,Updated Kitchen,Wet Bar
Rooms Total: 15
Fireplace Features: Brick, Family Room, Insert, Living Room, Raised Hearth

Exterior

Building Information
Construction Materials: Brick, Composition Shingles, Stucco
Building Area Total: 6,890
Foundation Details: Raised

Exterior Features
Patio And Porch Features: Patio, Covered
Exterior Features: Backyard, Garden, Back Yard, Front Yard, Garden/Play, Side Yard, Sprinklers Automatic, Sprinklers Back, Sprinklers Front, Sprinklers Side, Storage
Fencing: Fenced, Back Yard
Roof: Shingle

Pool Information
Pool Features: Electric Heat, In Ground, Pool Cover, Solar Heat, Solar Pool Owned, Outdoor Pool
Spa Features: Private
Has Private Pool
Has Spa

Property Information
Living Area: 6890
Living Area Units: Square Feet
Property Type: Residential
Property Sub Type: Single Family Residence
Year Built: 1950

Lot Information
Other Structures: Guest House
Lot Size Square Feet: 64033
Lot Size Area: 1.47
Lot Size Units: Acres
Lot Size Acres: 1.47
Lot Features: 2 Houses / 1 Lot, Level, Premium Lot, Secluded, Front Yard, Landscape Front, Paved, Pool Site, Private, Landscape Back
Waterfront
Waterfront Features: Creek

Utilities

Utility Information
Water Source: Public
Electric: 220 Volts in Kitchen, Generator
Sewer: Public Sewer

Heating & Cooling
Has Heating
Heating: Zoned, Fireplace Insert, Fireplace(s)
Cooling: Ceiling Fan(s), Zoned

Public facts

Beds: 5
Baths: 5.0
Sq. Ft.: 5,179
Stories: 1.0
Lot Size: 1.47 acres
Style: Single Family Residential
Year Built: 1950
Year Renovated: 2000
County: Contra Costa County
APN: 2441600067

Home facts updated by county records on Jul 13, 2026

Around this home

Schools

Happy Valley Elementary School

Public K-5 • Assigned • 0.9mi

8/10

M. H. Stanley Middle School

Public 6-8 • Assigned • 1.1mi

8/10

Acalanes High School

Public 9-12 • Assigned • 1.8mi

10/10

Provided by GreatSchools

Lifestyle

Provided by Walk Score and Local Logic

Climate risks

1/10 Flood Factor

Minimal risk of a flood reaching the building in the next 30 years

3/10 Fire Factor

0.77% chance of being in a wildfire in next 30 years

3/10 Heat Factor

7 days above 93° expected this year, 16 days in 30 years

1/10 Wind Factor

Minimal risk of severe winds over next 30 years

8/10 Air Factor

15 unhealthy days expected this year, 16 days in 30 years

Provided by First Street

Historical weather

Lafayette, CA • 94549

Average low and high temperatures (°F)

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Sun exposure

In this area, properties receive around 11.5 hours in June and 4.9 hours in December, placing it above the U.S. average for solar exposure.

11.5 hrs

4.9 hrs

JuneDecember

Provided by Shadowmap

Estimated sale price

$5.78M – $7.00M

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Home values near 3666 Happy Valley Rd

Data from public records.

Address	Redfin Estimate
3671 Happy Valley Rd, Lafayette, CA 5 Beds \| 4 Baths \| 3560 Sq. Ft.	$3,168,870
3667 Happy Valley Rd, Lafayette, CA 4 Beds \| 4 Baths \| 2515 Sq. Ft.	$2,652,629

Address	Redfin Estimate
3682 Happy Valley Rd, Lafayette, CA 4 Beds \| 3.5 Baths \| 3317 Sq. Ft.	$3,625,972
3675 Happy Valley Rd, Lafayette, CA 4 Beds \| 5 Baths \| 4139 Sq. Ft.	$4,343,409

Address	Redfin Estimate
3670 Happy Valley Rd, Lafayette, CA 3 Beds \| 3 Baths \| 2713 Sq. Ft.	$3,368,569
3653 Happy Valley Rd, Lafayette, CA 4 Beds \| 4 Baths \| 2984 Sq. Ft.	$3,035,643

Property information provided by bridgeMLS, Bay East AOR, or Contra Costa AOR when last listed in 2024. This data may not match . Learn more.

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GreatSchools Ratings provided by GreatSchools.org.

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About this home

Redfin Estimate

Earn from this home

Market trends in 94549, CA

Redfin agents who toured

Sale history for 3666 Happy Valley Rd

Tax history for 3666 Happy Valley Rd

Public record

Property details

Around this home

Schools

Lifestyle

Climate risks

Historical weather

Sun exposure

Nearby similar homes

New listings for sale in 94549

Home values near 3666 Happy Valley Rd

More real estate resources