Google street view image for 3884 Happy Valley Rd, Lafayette, CA 94549

Off market may 1992 for $1.1M

$6,980,290

Est. refi paymentEst. refi $6,388/mo

•

7 ba

•

7,928

sq ft

3884 Happy Valley Rd, Lafayette, CA 94549

About this home

3884 Happy Valley Rd is a 7,928 square foot house on a 1.06 acre lot with 5 bedrooms and 7 bathrooms. - it last sold on May 22, 1992 for $1,135,000. Based on Redfin's Lafayette data, we estimate the home's value is $6,980,290.

Single-familyProperty Type

1987Year Built

1.06 acresLot Size

$880Est. Price/Sq.Ft.

Source:Public Records

Redfin Estimate

$6,980,290

$5.8M since sold in May 1992$32K since October

Recently sold homes
Estimate history
Homes for sale

This home's estimate is 79.4% higher than the average sale price ($3.89M) 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 SEP 9, 2026
$3,550,000
C
5 beds3.5 baths3,890 sq ft
3907 Happy Valley Rd, Lafayette, CA 94549
SOLD SEP 21, 2026
$3,250,000
D
4 beds4 baths4,453 sq ft
16 Valley View Ln, Orinda, CA 94563
SOLD JUL 9, 2026
$4,800,000
E
4 beds3.5 baths4,511 sq ft
1165 Glen Rd, Lafayette, CA 94549
SOLD DEC 29, 2025
$2,700,000
F
4 beds4 baths4,150 sq ft
3938 Los Arabis Dr, Lafayette, CA 94549

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Earn from this home

Sell

$6,612,825

Est. take-home

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Est. cash available

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Rent

$9,836/mo

Redfin rental estimate

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Market trends in 94549, CA

Last updated October 2026

Buyer's Market

Seller's Market

Seller's market

Sale-to-list price

102.4%

+1.0% MoM

Median sale price

$1.8M

$948 MoM

Avg. days on market

17d

0 days MoM

Recently sold homes

1 MoM

New listings for sale

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2 beds2 baths1,110 sq ft
1003 Woodbury Rd #104, Lafayette, CA 94549
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OPEN TODAY, 1PM TO 4PM
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3 beds2 baths1,670 sq ft
3241 Judith Ln, Lafayette, CA 94549
3D WALKTHROUGH
$2,895,000
4 beds4.5 baths4,225 sq ft
3370 Stage Coach Dr, Lafayette, CA 94549
OPEN TODAY, 1PM TO 4PM
$2,975,000
4 beds3 baths2,619 sq ft
4022 Happy Valley Rd, Lafayette, CA 94549
3D WALKTHROUGH
$999,000
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OPEN TODAY, 2PM TO 4PM
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See all

Provided by Redfin

Sale history for 3884 Happy Valley Rd

Year

Property tax

Land + Additions

Assessment*

2026

$78,849 (+2.2%)

$1,477,294 + $5,579,694

$7,056,988

2025

$77,181 (+1.7%)

$1,477,294 + $5,579,694

$7,056,988

2024

$75,891 (+1.7%)

$1,448,328 + $5,470,289

$6,918,617

2023

$74,645 (+1.5%)

$1,419,930 + $5,363,029

$6,782,959

2022

$73,518 (+25.8%)

$1,392,089 + $5,257,872

$6,649,961

2021

$58,433

$1,364,794 + $5,154,777

$6,519,571

2020

$58,443 (+0.7%)

$1,300,000 + $3,900,000

$5,200,000

2019

$58,021 (+4.7%)

$1,069,719 + $4,040,281

$5,110,000

2018

$55,399 (+2.9%)

$1,057,159 + $3,992,841

$5,050,000

2017

$53,852 (+2.2%)

$994,358 + $3,755,642

$4,750,000

2016

$52,691 (+7.7%)

$994,358 + $3,755,642

$4,750,000

2015

$48,944 (−1.2%)

$970,075 + $3,663,925

$4,634,000

2014

$49,546 (+8.5%)

$910,623 + $3,439,377

$4,350,000

2013

$45,674 (+7.9%)

$910,623 + $3,439,377

$4,350,000

2012

$42,315 (−30.1%)

$842,483 + $3,182,017

$4,024,500

2011

$60,554 (+0.9%)

$787,532 + $2,974,468

$3,762,000

2010

$59,985 (+16.2%)

$1,130,473 + $4,269,737

$5,400,210

2009

$51,632 (−0.3%)

$1,122,025 + $4,237,827

$5,359,852

2008

$51,805

$962,959 + $3,637,041

$4,600,000

Tax history for 3884 Happy Valley Rd

Year

Property tax

Land + Additions

Assessment*

2026

$78,849 (+2.2%)

$1,477,294 + $5,579,694

$7,056,988

2025

$77,181 (+1.7%)

$1,477,294 + $5,579,694

$7,056,988

2024

$75,891 (+1.7%)

$1,448,328 + $5,470,289

$6,918,617

2023

$74,645 (+1.5%)

$1,419,930 + $5,363,029

$6,782,959

2022

$73,518 (+25.8%)

$1,392,089 + $5,257,872

$6,649,961

2021

$58,433

$1,364,794 + $5,154,777

$6,519,571

2020

$58,443 (+0.7%)

$1,300,000 + $3,900,000

$5,200,000

2019

$58,021 (+4.7%)

$1,069,719 + $4,040,281

$5,110,000

2018

$55,399 (+2.9%)

$1,057,159 + $3,992,841

$5,050,000

2017

$53,852 (+2.2%)

$994,358 + $3,755,642

$4,750,000

2016

$52,691 (+7.7%)

$994,358 + $3,755,642

$4,750,000

2015

$48,944 (−1.2%)

$970,075 + $3,663,925

$4,634,000

2014

$49,546 (+8.5%)

$910,623 + $3,439,377

$4,350,000

2013

$45,674 (+7.9%)

$910,623 + $3,439,377

$4,350,000

2012

$42,315 (−30.1%)

$842,483 + $3,182,017

$4,024,500

2011

$60,554 (+0.9%)

$787,532 + $2,974,468

$3,762,000

2010

$59,985 (+16.2%)

$1,130,473 + $4,269,737

$5,400,210

2009

$51,632 (−0.3%)

$1,122,025 + $4,237,827

$5,359,852

2008

$51,805

$962,959 + $3,637,041

$4,600,000

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

Permits

Jan 30, 2010 • Final

Building/residential/al/alteration

Convert a portion of a garage into a living area.

Remodel

Jan 30, 2010 • Final

Building/residential/ad/single family addition

Construct a residential addition and perform remodeling work.

Addition

Remodel

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: 16

Exterior

Pool Information
Has Pool

Property Information
Subdivision Name: ACALANES RHO
Living Sq. Ft: 7,928
Ground Floor Sq. Ft: 4,359
Building Sq. Ft: 7,928
# of Stories: 2
Legal Description: RO ACALANES 1.065 AC

Parking & Garage Information
Garage/Parking Sq. Ft: 1,419

Lot Information
# of Buildings: 1
Land Sq. Ft: 46,391
Acres: 1.065
County Use Description: SINGLE FAMILY

Financial

Assessor Information
Assessment Year: 2026

Public facts

Beds: 5
Baths: 7.0
Sq. Ft.: 7,928
Stories: 2.0
Lot Size: 1.06 acres
Style: Single Family Residential
Year Built: 1987
Year Renovated: 2000
County: Contra Costa County
APN: 2460600105

Home facts updated by county records on Oct 30, 2026

Around this home

Schools

K - 12
Preschool & daycare

Happy Valley Elementary School

Public K-5 • Assigned • 0.1mi

8/10

M. H. Stanley Middle School

Public 6-8 • Assigned • 2.1mi

8/10

Acalanes High School

Public 9-12 • Assigned • 2.6mi

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)

60°

43°

62°

46°

70°

50°

68°

49°

75°

52°

78°

54°

81°

56°

87°

58°

81°

60°

72°

54°

63°

48°

57°

45°

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

$6.63M – $8.03M

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Home values near 3884 Happy Valley Rd

Data from public records.

Address	Redfin Estimate
3900 Happy Valley Road, Lafayette, CA 5 Beds \| 4 Baths \| 3537 Sq. Ft.	$2,897,076
3862 Happy Valley Road, Lafayette, CA 5 Beds \| 5 Baths \| 3832 Sq. Ft.	$3,075,896
3901 Happy Valley Road, Lafayette, CA 6 Beds \| 4 Baths \| 6585 Sq. Ft.	$4,282,285
3903 Happy Valley Road, Lafayette, CA 4 Beds \| 5 Baths \| 4177 Sq. Ft.	$4,534,026
1242 Panorama Drive, Lafayette, CA 5 Beds \| 4 Baths \| 3717 Sq. Ft.	$3,382,707
1261 Redwood Lane, Lafayette, CA 6 Beds \| 5 Baths \| 4726 Sq. Ft.	$4,298,490
1264 Redwood Lane, Lafayette, CA 4 Beds \| 4 Baths \| 4181 Sq. Ft.	$3,247,722

Address	Redfin Estimate
3915 Happy Valley Road, Lafayette, CA 6 Beds \| 8 Baths \| 9335 Sq. Ft.	$8,653,486
3898 Happy Valley Road, Lafayette, CA 5 Beds \| 6 Baths \| 4675 Sq. Ft.	$3,320,100
3868 Happy Valley Road, Lafayette, CA 5 Beds \| 3 Baths \| 4140 Sq. Ft.	$3,102,712
3920 Happy Valley Road, Lafayette, CA 4 Beds \| 3.5 Baths \| 3902 Sq. Ft.	$3,045,858
1257 Panorama Drive, Lafayette, CA 4 Beds \| 3.5 Baths \| 3622 Sq. Ft.	$4,294,853
21 Cosso Court, Lafayette, CA 3 Beds \| 2.5 Baths \| 2522 Sq. Ft.	$3,356,603
1261 Panorama Drive, Lafayette, CA 5 Beds \| 5 Baths \| 5497 Sq. Ft.	$4,672,271

Address	Redfin Estimate
3893 Happy Valley Road, Lafayette, CA 3 Beds \| 3 Baths \| 2715 Sq. Ft.	$2,325,811
16 Happy Valley Road, Lafayette, CA 4 Beds \| 3 Baths \| 3885 Sq. Ft.	$3,739,144
3890 Happy Valley Road, Lafayette, CA 6 Beds \| 5.5 Baths \| 4958 Sq. Ft.	$8,204,021
1249 Panorama Drive, Lafayette, CA 3 Beds \| 3 Baths \| 2396 Sq. Ft.	$2,476,367
1253 Panorama Drive, Lafayette, CA 4 Beds \| 3 Baths \| 3703 Sq. Ft.	$2,732,072
1245 Panorama Drive, Lafayette, CA 3 Beds \| 3 Baths \| 2632 Sq. Ft.	$2,880,092
1262 Redwood Lane, Lafayette, CA 4 Beds \| 3 Baths \| 4166 Sq. Ft.	$3,619,911

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About this home

Redfin Estimate

Earn from this home

Market trends in 94549, CA

Sale history for 3884 Happy Valley Rd

Tax history for 3884 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 3884 Happy Valley Rd

More real estate resources