4128 Happy Valley Rd, Lafayette, CA 94549

Off market sep 2024 for $3.2M

$3,521,249

Est. refi paymentEst. refi $16,732/mo

•

4,800

sq ft

4128 Happy Valley Rd, Lafayette, CA 94549

About this home

Single-familyProperty Type

1978Year Built

5.43 acresLot Size

3 car garageParking

Listed by Ann Newton Cane •DRE #02084093 • Golden Gate Sotheby's Int'l Re

Bought with Out Of Area Out •DRE #88888888 • OUT OF AREA - NON MEMBER

Redfin checked: 2 minutes ago

•Source:bridgeMLS, Bay East AOR, or Contra Costa AOR #41067609

Redfin Estimate

$3,521,249

$271K since sold in September 2024$231K since October

Recently sold homes
Estimate history
Homes for sale

This home's estimate is 21.5% higher than the average sale price ($2.90M) of 6 comparable homes.

SOLD JUN 25, 2026
$3,475,000
A
5 beds4.5 baths3,900 sq ft
1059 Lizann Dr, Lafayette, CA 94549
SOLD OCT 27, 2026
$2,115,000
B
5 beds3 baths4,579 sq ft
128 Diablo View Dr, Orinda, CA 94563
SOLD NOV 6, 2026
$2,769,000
C
5 beds4.5 baths4,986 sq ft
4120 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 SEP 17, 2026
$3,200,000
E
5 beds4.5 baths4,645 sq ft
74 Yarrow Valley Ln, Orinda, CA 94563
SOLD MAR 5, 2026
$2,575,000
F
4 beds4 baths4,180 sq ft
4500 Canyon Rd, Lafayette, CA 94549

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Earn from this home

Sell

$835,383

Est. take-home

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Refinance

Est. cash available

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Rent

$9,617/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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1003 Woodbury Rd #104, Lafayette, CA 94549
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2 beds2 baths1,110 sq ft
1003 Woodbury Rd #104, Lafayette, CA 94549
COMING SOON
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OPEN TODAY, 1PM TO 4PM
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$2,895,000
4 beds4.5 baths4,225 sq ft
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4 beds3 baths2,619 sq ft
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See all

Provided by Redfin

Sale history for 4128 Happy Valley Rd

Year

Property tax

Land + Additions

Assessment*

2026

$38,908 (+3.9%)

$1,377,000 + $1,993,000

$3,370,000

2025

$37,442 (+520.9%)

$1,377,000 + $1,993,000

$3,370,000

2024

$6,030 (−49.1%)

$1,350,000 + $1,900,000

$3,250,000

2023

$11,852 (+1.5%)

$395,132 + $580,261

$975,393

2022

$11,679 (+3.0%)

$387,385 + $568,884

$956,269

2021

$11,343 (+0.5%)

$379,790 + $557,730

$937,520

2020

$11,285 (+3.6%)

$372,344 + $546,795

$919,139

2019

$10,892 (+3.7%)

$368,527 + $541,189

$909,716

2018

$10,506 (+2.0%)

$361,301 + $530,578

$891,879

2017

$10,303 (+1.9%)

$347,272 + $509,976

$857,248

2016

$10,111 (+2.8%)

$347,272 + $509,976

$857,248

2015

$9,834 (+0.9%)

$340,463 + $499,977

$840,440

2014

$9,745 (+1.2%)

$328,780 + $482,821

$811,601

2013

$9,627 (+3.2%)

$328,780 + $482,821

$811,601

2012

$9,331 (+1.6%)

$327,295 + $480,639

$807,934

2011

$9,185 (+0.9%)

$320,878 + $471,215

$792,093

2010

$9,104 (+0.8%)

$314,587 + $461,976

$776,563

2009

$9,036 (+1.7%)

$312,236 + $458,524

$770,760

2008

$8,886

$312,978 + $459,614

$772,592

Tax history for 4128 Happy Valley Rd

Year

Property tax

Land + Additions

Assessment*

2026

$38,908 (+3.9%)

$1,377,000 + $1,993,000

$3,370,000

2025

$37,442 (+520.9%)

$1,377,000 + $1,993,000

$3,370,000

2024

$6,030 (−49.1%)

$1,350,000 + $1,900,000

$3,250,000

2023

$11,852 (+1.5%)

$395,132 + $580,261

$975,393

2022

$11,679 (+3.0%)

$387,385 + $568,884

$956,269

2021

$11,343 (+0.5%)

$379,790 + $557,730

$937,520

2020

$11,285 (+3.6%)

$372,344 + $546,795

$919,139

2019

$10,892 (+3.7%)

$368,527 + $541,189

$909,716

2018

$10,506 (+2.0%)

$361,301 + $530,578

$891,879

2017

$10,303 (+1.9%)

$347,272 + $509,976

$857,248

2016

$10,111 (+2.8%)

$347,272 + $509,976

$857,248

2015

$9,834 (+0.9%)

$340,463 + $499,977

$840,440

2014

$9,745 (+1.2%)

$328,780 + $482,821

$811,601

2013

$9,627 (+3.2%)

$328,780 + $482,821

$811,601

2012

$9,331 (+1.6%)

$327,295 + $480,639

$807,934

2011

$9,185 (+0.9%)

$320,878 + $471,215

$792,093

2010

$9,104 (+0.8%)

$314,587 + $461,976

$776,563

2009

$9,036 (+1.7%)

$312,236 + $458,524

$770,760

2008

$8,886

$312,978 + $459,614

$772,592

*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
Zoning
Permits

Beds

Baths

Stories

Lot width

—

Lot depth

—

Lot size

5.43 Acres

Year renovated

1995

Sq. Ft.

4,341

Year built

1978

Style

Single Family Residential

County

Contra Costa County

APN

3652600259

Parking Spaces

—

Basement

—

Accessible

—

HOA Dues

—

Garage

—

Features

—

Last updated by owner on Oct 30, 2026.

LR-5

Low-Density Residential District-5

The purposes of the low-density residential L-R-5 district include the following: Provide for areas of low-density residential uses consistent with the general plan and with the city’s primary objective of preservation and enhancement of its semi-rural residential character; Promote the health, safety and welfare of the community by protecting the land in the L-R-5 district from uses that would disturb the natural environment and increase geologic, pedologic, seismic, hydrologic or other inherent hazards; Preserve and maintain the scenic, recreational, biotic, historic and other resources of land in the L-R-5 district.

Permitted uses

Include but are not limited to:

Livestock production
Housing-Single unit

Dec 1, 2025 • Active

Building - residential re-roof

Roofing

Jun 11, 2025 • Active

Building/residential/ad/single family addition

Expand the existing living room by squaring off an angled wall. Remodel the kitchen and bathroom. Install a new exterior door in the kitchen and replace existing windows and doors.

Addition

Bathroom

Kitchen

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

Parking

Parking Information
Has Attached Garage
Garage Spaces: 3
Covered Spaces: 3
Parking Features: Electric Vehicle Charging Station(s), Garage Door Opener

Interior

Virtual Tour

Bathroom Information
# of Bathrooms Total: 5
# of Bathrooms Full: 4
# of Bathrooms Partial: 1

Interior Features
Interior Features: Au Pair, Dining Area, Family Room, Office, Storage, Breakfast Bar, Breakfast Nook
Appliances: Dishwasher, Microwave, Refrigerator, Dryer, Washer
Laundry Features: Dryer, Washer
Fireplaces Total: 2
Has Fireplace
Flooring: Tile, Carpet

Room Information
Kitchen Features: Breakfast Bar,Breakfast Nook,Counter - Tile,Dishwasher,Garbage Disposal,Microwave,Refrigerator
Rooms Total: 13
Room Type: Au Pair, Dining Area, Family Room, Office, Storage, Kitchen, Laundry, Master Bathroom, Master Bedroom, Wine Cellar, Wine Storage Area, Attic
Fireplace Features: Family Room, Living Room

Exterior

Building Information
Construction Materials: Brick, Stucco, Asphalt, Shingles
Building Area Total: 4,800

Exterior Features
Patio And Porch Features: Deck, Patio
Exterior Features: Garden, Back Yard, Side Yard, Landscape Back, Landscape Front, Private Entrance, Yard Space
Fencing: Fenced

Pool Information
Pool Features: In Ground, Pool Cover, Outdoor Pool
Has Private Pool

Property Information
Living Area: 4800
Living Area Units: Square Feet
Property Type: Residential
Property Sub Type: Single Family Residence
Year Built: 1978

Lot Information
Lot Size Square Feet: 236328
Lot Size Area: 5.43
Lot Size Units: Acres
Lot Size Acres: 5.43
Lot Features: Premium Lot, Sloped Up, Front Yard, Pool Site, Private

Utilities

Heating & Cooling
Has Heating
Heating: Zoned

Public facts

Beds: 5
Baths: 5.0
Sq. Ft.: 4,341
Stories: 2.0
Lot Size: 5.43 acres
Style: Single Family Residential
Year Built: 1978
Year Renovated: 1995
County: Contra Costa County
APN: 3652600259

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 • 1.1mi

8/10

M. H. Stanley Middle School

Public 6-8 • Assigned • 3.0mi

8/10

Acalanes High School

Public 9-12 • Assigned • 3.5mi

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

1% chance of being in a wildfire in next 30 years

2/10 Heat Factor

7 days above 92° expected this year, 15 days in 30 years

1/10 Wind Factor

Minimal risk of severe winds over next 30 years

8/10 Air Factor

14 unhealthy days expected this year, 15 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

$3.35M – $4.05M

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Home values near 4128 Happy Valley Rd

Data from public records.

Address	Redfin Estimate
4116 Happy Valley Rd, Lafayette, CA 5 Beds \| 4 Baths \| 4830 Sq. Ft.	$3,640,260
4105 Happy Valley Rd, Lafayette, CA 4 Beds \| 2.5 Baths \| 3086 Sq. Ft.	$2,901,497
4107 Happy Valley Rd, Lafayette, CA 5 Beds \| 5.5 Baths \| 6230 Sq. Ft.	$4,643,831
4134 Happy Valley Rd, Orinda, CA 5 Beds \| 6 Baths \| 4721 Sq. Ft.	$3,935,936
4087 Happy Valley Rd, Lafayette, CA 5 Beds \| 5 Baths \| 4934 Sq. Ft.	$4,169,544
236 Sundown Ter, Orinda, CA 4 Beds \| 4 Baths \| 3958 Sq. Ft.	$3,212,310
4 White Pine Ln, Lafayette, CA 3 Beds \| 4 Baths \| 3700 Sq. Ft.	$2,255,575

Address	Redfin Estimate
4100 Happy Valley Rd, Lafayette, CA 4 Beds \| 5 Baths \| 6157 Sq. Ft.	$6,121,422
4103 Happy Valley Rd, Lafayette, CA 4 Beds \| 2.5 Baths \| 3027 Sq. Ft.	$2,474,099
4124 Happy Valley Rd, Lafayette, CA 4 Beds \| 5 Baths \| 4423 Sq. Ft.	$3,331,625
4109 Happy Valley Rd, Lafayette, CA 6 Beds \| 4 Baths \| 3796 Sq. Ft.	$3,271,379
4090 Happy Valley Rd, Lafayette, CA 5 Beds \| 6.5 Baths \| 6211 Sq. Ft.	$8,306,768
234 Sundown Ter, Orinda, CA 4 Beds \| 6 Baths \| 6024 Sq. Ft.	$4,670,813
239 Sundown Ter, Orinda, CA 5 Beds \| 3 Baths \| 3648 Sq. Ft.	$2,978,808

Address	Redfin Estimate
4110 Happy Valley Rd, Lafayette, CA 7 Beds \| 5.5 Baths \| 5729 Sq. Ft.	$4,438,441
4130 Happy Valley Rd, Orinda, CA 5 Beds \| 6 Baths \| 5853 Sq. Ft.	$4,512,721
4120 Happy Valley Rd, Lafayette, CA 5 Beds \| 4.5 Baths \| 4986 Sq. Ft.	$2,552,910
4101 Happy Valley Rd, Lafayette, CA 5 Beds \| 4 Baths \| 4307 Sq. Ft.	$3,797,718
231 Sundown Ter, Orinda, CA 6 Beds \| 5 Baths \| 4657 Sq. Ft.	$4,133,533
235 Sundown Ter, Orinda, CA 4 Beds \| 4 Baths \| 3802 Sq. Ft.	$3,239,069

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

Sale history for 4128 Happy Valley Rd

Tax history for 4128 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 4128 Happy Valley Rd

More real estate resources