Google satellite image for 4045 Happy Valley Rd, Lafayette, CA 94549

Off Market Oct 2025 for $10M

—

Est. refi paymentEst. refi $66,644/mo

•

7,010

sq ft

4045 Happy Valley Rd, Lafayette, CA 94549

About this home

4045 Happy Valley Rd is a 7,010 square foot house on a 1.58 acre lot with 6 bedrooms and 7 bathrooms. - it last sold on October 31, 2025 for $10,200,000.

Single-familyProperty Type

1941Year Built

1.58 acresLot Size

$1,455Price/Sq.Ft.

Source:Public Records

Redfin Estimate

We are currently not able to show the Redfin Estimate at this time.

Nearby homes have recently sold between $2,850,000 and $9,600,108.

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

New listings for sale

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OPEN SAT, 2PM TO 4PM
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3 beds2 baths1,820 sq ft
37 Chapel Dr, Lafayette, CA 94549
OPEN SAT, 1PM TO 4PM
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5 beds3.5 baths4,075 sq ft
20 Northridge Ln, Lafayette, CA 94549
NEW 25 HRS AGO
$12,000,000
5 beds5.5 baths6,924 sq ft
1232 Rose Ln, Lafayette, CA 94549
NEW 28 HRS AGO
3213 Stanley Blvd, Lafayette, CA 94549
$989,000
2 beds1 bath888 sq ft
3213 Stanley Blvd, Lafayette, CA 94549
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
5 beds4 baths3,450 sq ft
1332 Reliez Valley Rd, Lafayette, CA 94549
See all

Provided by Redfin

Sale history for 4045 Happy Valley Rd

Date

Event

Price

Public Records

Oct 31, 2025

Sold

$10,200,000

$1,455/sq ft

Public Records

Jun 17, 2016

Sold

$6,150,000

$877/sq ft

bridgeMLS, Bay East AOR, or Contra Costa AOR #40733634

Jun 17, 2016

Listing Removed

—

May 4, 2016

Pending

—

Mar 24, 2016

Listed

bridgeMLS, Bay East AOR, or Contra Costa AOR #10219466

Sep 12, 1996

Listing Removed

—

Jun 20, 1996

Listed

$168/sq ft

bridgeMLS, Bay East AOR, or Contra Costa AOR #26219466

Sep 12, 1996

Sold

—

Aug 1, 1996

Listing Removed

—

Jun 20, 1996

Listed

$1,175,000

$168/sq ft

Public Records

Dec 24, 1986

Sold

$700,000

$100/sq ft

** Price available after signing in.

Year

Property tax

Land + Additions

Assessment*

2025

$82,584 (+1.7%)

$6,000,000 + $4,200,000

$10,200,000

2024

$81,204 (+1.7%)

$4,735,187 + $2,681,255

$7,416,442

2023

$79,873 (+1.5%)

$4,642,341 + $2,628,682

$7,271,023

2022

$78,667 (+3.0%)

$4,551,315 + $2,577,140

$7,128,455

2021

$76,388 (−0.8%)

$4,462,074 + $2,526,608

$6,988,682

2020

$76,966 (+2.2%)

$4,374,583 + $2,477,067

$6,851,650

2019

$75,301 (+4.7%)

$4,329,728 + $2,451,668

$6,781,396

2018

$71,891 (+1.7%)

$4,244,832 + $2,349,597

$6,594,429

2017

$70,655 (+110.6%)

$4,080,000 + $2,193,000

$6,273,000

2016

$33,553 (+2.7%)

$4,080,000 + $2,193,000

$6,273,000

2015

$32,657 (+0.7%)

$1,238,248 + $1,667,191

$2,905,439

2014

$32,415 (+1.0%)

$1,195,758 + $1,609,982

$2,805,740

2013

$32,080 (+5.4%)

$1,195,758 + $1,609,982

$2,805,740

2012

$30,430 (−0.8%)

$1,190,354 + $1,602,706

$2,793,060

2011

$30,688 (+1.3%)

$1,139,826 + $1,534,674

$2,674,500

2010

$30,297

$1,144,132 + $1,540,472

$2,684,604

2009

$30,325 (+65.1%)

$1,135,582 + $1,528,959

$2,664,541

2008

$18,370

$1,138,280 + $1,532,592

$2,670,872

Tax history for 4045 Happy Valley Rd

Year

Property tax

Land + Additions

Assessment*

2025

$82,584 (+1.7%)

$6,000,000 + $4,200,000

$10,200,000

2024

$81,204 (+1.7%)

$4,735,187 + $2,681,255

$7,416,442

2023

$79,873 (+1.5%)

$4,642,341 + $2,628,682

$7,271,023

2022

$78,667 (+3.0%)

$4,551,315 + $2,577,140

$7,128,455

2021

$76,388 (−0.8%)

$4,462,074 + $2,526,608

$6,988,682

2020

$76,966 (+2.2%)

$4,374,583 + $2,477,067

$6,851,650

2019

$75,301 (+4.7%)

$4,329,728 + $2,451,668

$6,781,396

2018

$71,891 (+1.7%)

$4,244,832 + $2,349,597

$6,594,429

2017

$70,655 (+110.6%)

$4,080,000 + $2,193,000

$6,273,000

2016

$33,553 (+2.7%)

$4,080,000 + $2,193,000

$6,273,000

2015

$32,657 (+0.7%)

$1,238,248 + $1,667,191

$2,905,439

2014

$32,415 (+1.0%)

$1,195,758 + $1,609,982

$2,805,740

2013

$32,080 (+5.4%)

$1,195,758 + $1,609,982

$2,805,740

2012

$30,430 (−0.8%)

$1,190,354 + $1,602,706

$2,793,060

2011

$30,688 (+1.3%)

$1,139,826 + $1,534,674

$2,674,500

2010

$30,297

$1,144,132 + $1,540,472

$2,684,604

2009

$30,325 (+65.1%)

$1,135,582 + $1,528,959

$2,664,541

2008

$18,370

$1,138,280 + $1,532,592

$2,670,872

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

Permits

Oct 27, 2025 • Active

Building/residential/al/alteration

Remove and replace an existing shower stall with a new shower stall and shower pan.

Bathroom

Remodel

Dec 19, 2024 • Final

Building - residential re-roof

Roofing

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

Heating & Cooling
Heating Fuel Type: Gas
Heating Type: Forced Air

Fireplace Information
# of Fireplaces: 2
Has Fireplace

Room Information
# of Rooms: 14

Exterior

Exterior Information
Physical Condition: Good
Foundation Type: Slab
Building Construction Quality: Good
Exterior Wall: Wood Siding

Pool Information
Has Pool

Property Information
Subdivision Name: ACALANES RHO
Living Sq. Ft: 6,041
Ground Floor Sq. Ft: 3,978
Building Sq. Ft: 6,041
# of Stories: 1
Legal Description: RO ACALANES

Parking & Garage Information
# of Parking Spaces: 2
Parking Type: Garage/Carport
Garage/Parking Sq. Ft: 1,549

Lot Information
# of Buildings: 1
Land Sq. Ft: 68,694
Acres: 1.577
County Use Description: SINGLE FAMILY

Utility Information
Sewer Type: Public
Water Service Type: Public

Financial

Assessor Information
Assessment Year: 2026

Public facts

Beds: 6
Baths: 7.0
Sq. Ft.: 7,010
Stories: 1.0
Parking Spaces: —
Basement: No
Accessible: No
Lot Size: 1.58 acres
Style: Single Family Residential
Year Built: 1941
Year Renovated: 1990
County: Contra Costa County
APN: 2470310034
HOA Dues: —
Garage: No
Features: Pool

Home facts updated by owner on Nov 10, 2025

Around this home

Schools

Happy Valley Elementary School

Public K-5 • Assigned • 0.7mi

8/10

M. H. Stanley Middle School

Public 6-8 • Assigned • 2.6mi

8/10

Acalanes High School

Public 9-12 • Assigned • 3.2mi

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

3/10 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)

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

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Home values near 4045 Happy Valley Rd

Data from public records.

Address	Redfin Estimate
4055 Happy Valley Rd, Lafayette, CA 5 Beds \| 4.5 Baths \| 4272 Sq. Ft.	$5,559,813
4069 Happy Valley Rd, Lafayette, CA 5 Beds \| 5 Baths \| 5813 Sq. Ft.	$5,807,136

Address	Redfin Estimate
4032 Happy Valley Rd, Lafayette, CA 5 Beds \| 5 Baths \| 4799 Sq. Ft.	$4,734,837
4067 Happy Valley Rd, Lafayette, CA 6 Beds \| 6.5 Baths \| 6383 Sq. Ft.	$8,099,561

Address	Redfin Estimate
4040 Happy Valley Rd, Lafayette, CA 3 Beds \| 3 Baths \| 2607 Sq. Ft.	$2,404,493
4015 Happy Valley Rd, Lafayette, CA 5 Beds \| 5.5 Baths \| 6011 Sq. Ft.	$5,410,046

This data may not show owner updates. Learn more.

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GreatSchools Ratings provided by GreatSchools.org.

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About this home

Redfin Estimate

Market trends in 94549, CA

Sale history for 4045 Happy Valley Rd

Tax history for 4045 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 4045 Happy Valley Rd

More real estate resources