Google street view image for 3903 Happy Valley Rd, Lafayette, CA 94549

Off Market Feb 1994 for $1.2M

$4,508,680

Est. refi paymentEst. refi $7,354/mo

•

5 ba

•

4,177

sq ft

3903 Happy Valley Rd, Lafayette, CA 94549

About this home

3903 Happy Valley Rd is a 4,177 square foot house on a 1.15 acre lot with 4 bedrooms and 5 bathrooms. - it last sold on February 08, 1994 for $1,237,500. Based on Redfin's Lafayette data, we estimate the home's value is $4,508,680.

Single-familyProperty Type

1941Year Built

1.15 acresLot Size

$1,079Est. Price/Sq.Ft.

Source:Public Records

Redfin Estimate

$4,508,680

$3.3M since sold in February 1994$91K since August

Recently sold homes
Estimate history
Homes for sale

This home's estimate is 10.9% higher than the average sale price ($4.07M) 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 AUG 26, 2026
$4,800,000
B
4 beds3.5 baths4,033 sq ft
3954 S Peardale Dr, Lafayette, CA 94549
SOLD NOV 14, 2025
$4,250,000
C
4 beds4.5 baths4,502 sq ft
1133 Estates Dr, Lafayette, CA 94549
SOLD JUL 9, 2026
$4,800,000
D
4 beds3.5 baths4,511 sq ft
1165 Glen Rd, Lafayette, CA 94549
SOLD AUG 18, 2026
$2,600,000
E
3 beds3 baths3,475 sq ft
1066 Dolores Dr, Lafayette, CA 94549
SOLD SEP 4, 2025
$3,700,000
F
4 beds4.5 baths4,640 sq ft
1121 Estates Dr, Lafayette, CA 94549

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Earn from this home

Sell

$4,270,974

Est. take-home

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Refinance

Est. cash available

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Rent

$9,929/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

101.8%

0.2% MoM

Median sale price

$2.0M

$26K MoM

Avg. days on market

17d

2 days MoM

Recently sold homes

103

4 MoM

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5 beds3.5 baths4,075 sq ft
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NEW 25 HRS AGO
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NEW 28 HRS AGO
3213 Stanley Blvd, Lafayette, CA 94549
$989,000
2 beds1 bath888 sq ft
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Tom Linthicum RE Company
COMING SOON
$2,799,000
5 beds3.5 baths3,500 sq ft
809 Mountain View Dr, Lafayette, CA 94549
OPEN SAT, 12PM TO 2PM
$1,695,000
6 beds2 baths1,890 sq ft
946 Hough Ave, Lafayette, CA 94549
(415) 660-9955
OPEN SAT, 1PM TO 4PM
$2,998,000
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See all

Provided by Redfin

Sale history for 3903 Happy Valley Rd

Year

Property tax

Land + Additions

Assessment*

2025

$31,260 (+1.7%)

$780,155 + $1,960,975

$2,741,130

2024

$30,733 (+1.7%)

$764,858 + $1,922,525

$2,687,383

2023

$30,214 (+1.5%)

$749,861 + $1,884,829

$2,634,690

2022

$29,754 (+3.0%)

$735,158 + $1,847,872

$2,583,030

2021

$28,893 (−0.5%)

$720,744 + $1,811,640

$2,532,384

2020

$29,046 (+2.0%)

$706,612 + $1,776,118

$2,482,730

2019

$28,472 (+3.7%)

$699,367 + $1,757,907

$2,457,274

2018

$27,464 (+1.7%)

$685,654 + $1,723,439

$2,409,093

2017

$26,993 (+1.8%)

$659,030 + $1,656,517

$2,315,547

2016

$26,519 (+2.8%)

$659,030 + $1,656,517

$2,315,547

2015

$25,809 (+0.8%)

$646,108 + $1,624,037

$2,270,145

2014

$25,610 (+14.2%)

$623,937 + $1,568,309

$2,192,246

2013

$22,420 (+1.2%)

$623,937 + $1,568,309

$2,192,246

2012

$22,163 (−8.1%)

$548,397 + $1,369,603

$1,918,000

2011

$24,126 (+2.0%)

$548,397 + $1,369,603

$1,918,000

2010

$23,665

$597,000 + $1,490,987

$2,087,987

2009

$23,659 (+1.8%)

$592,539 + $1,469,919

$2,062,458

2008

$23,248

$593,947 + $1,473,411

$2,067,358

Tax history for 3903 Happy Valley Rd

Year

Property tax

Land + Additions

Assessment*

2025

$31,260 (+1.7%)

$780,155 + $1,960,975

$2,741,130

2024

$30,733 (+1.7%)

$764,858 + $1,922,525

$2,687,383

2023

$30,214 (+1.5%)

$749,861 + $1,884,829

$2,634,690

2022

$29,754 (+3.0%)

$735,158 + $1,847,872

$2,583,030

2021

$28,893 (−0.5%)

$720,744 + $1,811,640

$2,532,384

2020

$29,046 (+2.0%)

$706,612 + $1,776,118

$2,482,730

2019

$28,472 (+3.7%)

$699,367 + $1,757,907

$2,457,274

2018

$27,464 (+1.7%)

$685,654 + $1,723,439

$2,409,093

2017

$26,993 (+1.8%)

$659,030 + $1,656,517

$2,315,547

2016

$26,519 (+2.8%)

$659,030 + $1,656,517

$2,315,547

2015

$25,809 (+0.8%)

$646,108 + $1,624,037

$2,270,145

2014

$25,610 (+14.2%)

$623,937 + $1,568,309

$2,192,246

2013

$22,420 (+1.2%)

$623,937 + $1,568,309

$2,192,246

2012

$22,163 (−8.1%)

$548,397 + $1,369,603

$1,918,000

2011

$24,126 (+2.0%)

$548,397 + $1,369,603

$1,918,000

2010

$23,665

$597,000 + $1,490,987

$2,087,987

2009

$23,659 (+1.8%)

$592,539 + $1,469,919

$2,062,458

2008

$23,248

$593,947 + $1,473,411

$2,067,358

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

Permits

Jun 5, 2025 • Final

Building/residential/al/alteration

Remodel an existing primary bathroom within its current footprint. Install new lighting, tile, cabinets, and countertops. Perform plumbing work for a new bathtub, shower, and vanities in their existing locations and repair sheetrock.

Bathroom

Plumbing

Remodel

May 26, 2021 • Final

Building/residential/mir/miscellaneous residential

Install a backup generator.

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

Interior

Room Information
# of Rooms: 12

Exterior

Pool Information
Has Pool

Property Information
Subdivision Name: ACALANES RHO
Living Sq. Ft: 4,177
Ground Floor Sq. Ft: 4,177
Building Sq. Ft: 4,177
# of Stories: 1
Legal Description: RO ACALANES 1.15 AC

Parking & Garage Information
Garage/Parking Sq. Ft: 730

Lot Information
# of Buildings: 1
Land Sq. Ft: 50,094
Acres: 1.15
County Use Description: SINGLE FAMILY

Financial

Assessor Information
Assessment Year: 2026

Public facts

Beds: 4
Baths: 5.0
Sq. Ft.: 4,177
Stories: 1.0
Lot Size: 1.15 acres
Style: Single Family Residential
Year Built: 1941
Year Renovated: 1970
County: Contra Costa County
APN: 2461200020

Home facts updated by county records on Jul 13, 2026

Around this home

Schools

Happy Valley Elementary School

Public K-5 • Assigned • 0.2mi

8/10

M. H. Stanley Middle School

Public 6-8 • Assigned • 2.2mi

8/10

Acalanes High School

Public 9-12 • Assigned • 2.7mi

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

4/10 Fire Factor

2% chance of being in a wildfire in next 30 years

3/10 Heat Factor

7 days above 92° 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

$4.28M – $5.19M

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New listings for sale in 94549

OPEN SUN, 1PM TO 4PM

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NEW 4 HRS AGO

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OPEN SAT, 1PM TO 4PM

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NEW 25 HRS AGO

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5 beds5.5 baths6,924 sq ft

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NEW 28 HRS AGO

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2 beds1 bath888 sq ft

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Tom Linthicum RE Company

COMING SOON

$2,799,000

5 beds3.5 baths3,500 sq ft

809 Mountain View Dr, Lafayette, CA 94549

OPEN SAT, 12PM TO 2PM

$1,695,000

6 beds2 baths1,890 sq ft

946 Hough Ave, Lafayette, CA 94549

(415) 660-9955

Home values near 3903 Happy Valley Rd

Data from public records.

Address	Redfin Estimate
3900 Happy Valley Road, Lafayette, CA 5 Beds \| 3 Baths \| 2896 Sq. Ft.	$2,904,804
3938 Happy Valley Road, Lafayette, CA 5 Beds \| 5.5 Baths \| - Sq. Ft.	$4,358,499

Address	Redfin Estimate
3915 Happy Valley Road, Lafayette, CA 6 Beds \| 6.5 Baths \| 6940 Sq. Ft.	$10,118,109
3905 Happy Valley Road, Lafayette, CA 6 Beds \| 6 Baths \| 4578 Sq. Ft.	$4,828,634

Address	Redfin Estimate
3893 Happy Valley Road, Lafayette, CA 3 Beds \| 3 Baths \| 2715 Sq. Ft.	$2,207,570
3936 Happy Valley Road, Lafayette, CA 5 Beds \| 5.5 Baths \| 4937 Sq. Ft.	$6,348,311

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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 3903 Happy Valley Rd

Tax history for 3903 Happy Valley Rd

Permits

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 3903 Happy Valley Rd

More real estate resources