3644A Happy Valley Rd, Lafayette, CA 94549

Off Market Sep 2020 for $2.8M

$3,578,720

Est. refi paymentEst. refi $19,954/mo

•

3,481

sq ft

3644A Happy Valley Rd, Lafayette, CA 94549

About this home

Tucked along a rare, tree-lined lane off of prestigious Happy Valley Road, sits this architecturally significant retreat! Renowned architect, Richard Danskin, masterfully created this custom home to focus on the contemporary California style of the 60’s, incorporating glass, redwood and soaring ceilings. Sophistication combines perfectly with casual elegance and a functional floor plan to create this modern single-story where walls of windows bring views of the lush exterior into every room and abundant exterior doors offer seamless indoor/outdoor living and enjoyment. The renovated exterior offers a tropical retreat-like setting complete with lush gardens, expansive covered lanai, refinished pool and spa, 450 sq. ft. guest house with kitchen and full bath, fire pit, gated front courtyard, putting green, and amazing privacy all on a premium, level parcel.

Single-familyProperty Type

1964Year Built

0.62 acresLot Size

$1,028Est. Price/Sq.Ft.

2 car garageParking

Listed by Dana Green •DRE #01482454 • Compass

Bought with Dana Green •DRE #01482454 • Compass

Redfin checked: a minute ago

•Source:bridgeMLS, Bay East AOR, or Contra Costa AOR #40920215

Redfin Estimate

$3,578,720

$684K since sold in September 2020$16K since August

Recently sold homes
Estimate history
Homes for sale

This home's estimate is 7.2% higher than the average sale price ($3.34M) of 6 comparable homes.

SOLD MAY 15, 2026
$3,300,000
A
4 beds4 baths3,530 sq ft
1122 Via Media, Lafayette, CA 94549
SOLD JUL 27, 2026
$2,800,000
B
5 beds3.5 baths3,169 sq ft
1038 Pine Ln, 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 JUN 17, 2026
$2,365,000
D
4 beds3 baths2,531 sq ft
1119 Oak Hill Rd, Lafayette, CA 94549
SOLD JUN 2, 2026
$3,950,000
E
4 beds3 baths3,311 sq ft
3853 Palo Alto Dr, Lafayette, CA 94549
SOLD JUN 12, 2026
$2,810,000
F
4 beds3.5 baths2,442 sq ft
1125 Glen Rd, Lafayette, CA 94549

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Earn from this home

Sell

$1,345,837

Est. take-home

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Refinance

Est. cash available

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Rent

$9,309/mo

Redfin rental estimate

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Market trends in 94549, CA

Last updated August 2026

Buyer's Market

Seller's Market

Seller's market

Sale-to-List Price

101.9%

0.2% MoM

Median sale price

$2.0M

$452 MoM

Avg. days on market

18d

0 days MoM

Recently sold homes

15 MoM

New listings for sale

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EARLY ACCESS
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OPEN TODAY, 11AM TO 1PM
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COMING SOON
$2,498,000
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857A Mountain View Dr, Lafayette, CA 94549
$2,100,000
4 beds2.5 baths2,086 sq ft
829 Reliez Station Rd, Lafayette, CA 94549
$1,587,000
4 beds3 baths2,392 sq ft
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OPEN TODAY, 11AM TO 2PM
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1232 Upper Happy Vly, Lafayette, CA 94549
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210 Lafayette Cir #302, Lafayette, CA 94549
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4 beds3.5 baths4,114 sq ft
3647 Happy Valley Rd, Lafayette, CA 94549
See all

Provided by Redfin

Sale history for 3644A Happy Valley Rd

Date

Event

Price

bridgeMLS, Bay East AOR, or Contra Costa AOR #40920215

Sep 10, 2020

Sold

$2,895,000

$832/sq ft

Sep 10, 2020

Listed

$2,895,000

$832/sq ft

Public Records

Aug 9, 2013

Sold

$1,984,000

$570/sq ft

bridgeMLS, Bay East AOR, or Contra Costa AOR #40610412

Aug 9, 2013

Sold

$1,983,595

$570/sq ft

Jun 28, 2013

Pending

—

Jun 22, 2013

Price Changed

$1,995,000

$573/sq ft

May 13, 2013

Price Changed

$2,395,000

$688/sq ft

Apr 12, 2013

Listed

$2,500,000

$718/sq ft

+20

Public Records

Jun 13, 2007

Sold

$2,100,000

$603/sq ft

Public Records

Apr 14, 1983

Sold

$370,000

$106/sq ft

Year

Property tax

Land + Additions

Assessment*

2025

$36,103 (+1.7%)

$1,981,824 + $1,214,487

$3,196,311

2024

$35,495 (+1.7%)

$1,942,965 + $1,190,674

$3,133,639

2023

$34,900 (+1.5%)

$1,904,868 + $1,167,328

$3,072,196

2022

$34,370 (+3.0%)

$1,867,518 + $1,144,440

$3,011,958

2021

$33,375 (+25.6%)

$1,830,900 + $1,122,000

$2,952,900

2020

$26,574 (+2.1%)

$1,795,000 + $1,100,000

$2,895,000

2019

$26,026 (+3.3%)

$1,153,399 + $1,080,881

$2,234,280

2018

$25,182 (+1.7%)

$1,130,784 + $1,059,688

$2,190,472

2017

$24,752 (+1.8%)

$1,086,875 + $1,018,540

$2,105,415

2016

$24,315 (+2.7%)

$1,086,875 + $1,018,540

$2,105,415

2015

$23,665 (+1.3%)

$1,065,564 + $998,569

$2,064,133

2014

$23,372 (+4.4%)

$1,029,000 + $954,500

$1,983,500

2013

$22,392 (+9.7%)

$1,029,000 + $954,500

$1,983,500

2012

$20,404 (−10.1%)

$1,174,937 + $733,563

$1,908,500

2011

$22,686 (−3.9%)

$1,139,538 + $711,462

$1,851,000

2010

$23,604 (+40.4%)

$1,200,485 + $749,515

$1,950,000

2009

$16,812 (−31.8%)

$1,250,000 + $800,000

$2,050,000

2008

$24,656

$889,662 + $550,838

$1,440,500

Tax history for 3644A Happy Valley Rd

Year

Property tax

Land + Additions

Assessment*

2025

$36,103 (+1.7%)

$1,981,824 + $1,214,487

$3,196,311

2024

$35,495 (+1.7%)

$1,942,965 + $1,190,674

$3,133,639

2023

$34,900 (+1.5%)

$1,904,868 + $1,167,328

$3,072,196

2022

$34,370 (+3.0%)

$1,867,518 + $1,144,440

$3,011,958

2021

$33,375 (+25.6%)

$1,830,900 + $1,122,000

$2,952,900

2020

$26,574 (+2.1%)

$1,795,000 + $1,100,000

$2,895,000

2019

$26,026 (+3.3%)

$1,153,399 + $1,080,881

$2,234,280

2018

$25,182 (+1.7%)

$1,130,784 + $1,059,688

$2,190,472

2017

$24,752 (+1.8%)

$1,086,875 + $1,018,540

$2,105,415

2016

$24,315 (+2.7%)

$1,086,875 + $1,018,540

$2,105,415

2015

$23,665 (+1.3%)

$1,065,564 + $998,569

$2,064,133

2014

$23,372 (+4.4%)

$1,029,000 + $954,500

$1,983,500

2013

$22,392 (+9.7%)

$1,029,000 + $954,500

$1,983,500

2012

$20,404 (−10.1%)

$1,174,937 + $733,563

$1,908,500

2011

$22,686 (−3.9%)

$1,139,538 + $711,462

$1,851,000

2010

$23,604 (+40.4%)

$1,200,485 + $749,515

$1,950,000

2009

$16,812 (−31.8%)

$1,250,000 + $800,000

$2,050,000

2008

$24,656

$889,662 + $550,838

$1,440,500

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

Public record

Beds

Baths

Stories

Lot width

—

Lot depth

—

Lot size

0.62 Acres

Year renovated

1980

Sq. Ft.

3,405

Year built

1964

Style

Single Family Residential

County

Contra Costa County

APN

2441800402

Parking Spaces

—

Basement

—

Accessible

—

HOA Dues

—

Garage

—

Features

—

Last updated by owner on Jul 13, 2026.

Property details

Parking

Parking Information
Has Attached Garage
Garage Spaces: 2
Covered Spaces: 2
Parking Features: Attached, Garage Door Opener

Interior

Bathroom Information
# of Bathrooms Total: 4
# of Bathrooms Full: 3
# of Bathrooms Partial: 1

Interior Features
Interior Features: Bonus/Plus Room, Den, Family Room, Formal Dining Room, Office, Breakfast Nook, Counter - Solid Surface, Stone Counters, Kitchen Island, Updated Kitchen
Appliances: Double Oven, Disposal, Gas Range, Tankless Water Heater
Laundry Features: Laundry Room
Street Level Features: 4 Bedrooms, 3.5 Baths, Laundry Facility, Main Entry
Flooring: Hardwood, Tile, Carpet

Room Information
Kitchen Features: Breakfast Nook,Counter - Solid Surface,Counter - Stone,Double Oven,Garbage Disposal,Gas Range/Cooktop,Island,Updated Kitchen
Rooms Total: 12

Exterior

Building Information
Construction Materials: Wood Siding
Building Area Total: 3,481
Builder Name: Richard Danski

Exterior Features
Patio And Porch Features: Patio
Exterior Features: Back Yard, Front Yard, Garden/Play, Garden, Landscape Back, Landscape Front
Fencing: Fenced, Back Yard
Roof: Shingle

Mobile Home Information
Model: Custom

Pool Information
Pool Features: In Ground, Spa
Has Private Pool
Has Spa

Property Information
Living Area: 3481
Living Area Units: Square Feet
Property Type: Residential
Property Sub Type: Single Family Residence
Year Built: 1964

Lot Information
Other Structures: Guest House
Lot Size Square Feet: 27007
Lot Size Area: 0.62
Lot Size Units: Acres
Lot Size Acres: 0.62
Lot Features: Cul-De-Sac, Level, Premium Lot

Utilities

Utility Information
Water Source: Public
Sewer: Public Sewer

Heating & Cooling
Has Heating
Heating: Zoned
Cooling: Zoned

Location

School Information
High School District: Acalanes (925) 280-3900

Public facts

Beds: 4
Baths: 4.0
Sq. Ft.: 3,405
Stories: 1.0
Lot Size: 0.62 acres
Style: Single Family Residential
Year Built: 1964
Year Renovated: 1980
County: Contra Costa County
APN: 2441800402

Home facts updated by county records on Jul 13, 2026

Around this home

Schools

Happy Valley Elementary School

Public K-5 • Assigned • 1.1mi

8/10

M. H. Stanley Middle School

Public 6-8 • Assigned • 0.9mi

8/10

Acalanes High School

Public 9-12 • Assigned • 1.7mi

10/10

Provided by GreatSchools

Lifestyle

Provided by Walk Score and Local Logic

Climate risks

7/10 Flood Factor

Estimated 74-82% chance 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

$3.40M – $4.12M

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Home values near 3644A Happy Valley Rd

Data from public records.

Address	Redfin Estimate
3648 Happy Valley Rd, Lafayette, CA 4 Beds \| 3.5 Baths \| 3689 Sq. Ft.	$3,511,745
3629 Happy Valley Ln, Lafayette, CA 3 Beds \| 2 Baths \| 1645 Sq. Ft.	$1,880,033

Address	Redfin Estimate
3644 Happy Valley Rd Apartment B, Lafayette, CA 4 Beds \| 4 Baths \| 2720 Sq. Ft.	$2,324,884
3618 Happy Valley Ln, Lafayette, CA 3 Beds \| 3 Baths \| 1784 Sq. Ft.	$1,352,880

Address	Redfin Estimate
3635 Happy Valley Ln, Lafayette, CA 3 Beds \| 2 Baths \| 1699 Sq. Ft.	$1,463,707
3642 Happy Valley Rd, Lafayette, CA 5 Beds \| 3 Baths \| 2863 Sq. Ft.	$2,082,477

Property information provided by bridgeMLS, Bay East AOR, or Contra Costa AOR when last listed in 2020. 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

Sale history for 3644A Happy Valley Rd

Tax history for 3644A 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 3644A Happy Valley Rd

More real estate resources