3646 Happy Valley Rd, Lafayette, CA 94549

Off Market Sep 2002 for $950K

$2,425,124

Est. refi paymentEst. refi $6,207/mo

•

3,347

sq ft

3646 Happy Valley Rd, Lafayette, CA 94549

About this home

Single-familyProperty Type

1949Year Built

0.32 acresLot Size

$725Est. Price/Sq.Ft.

2 car garageParking

Listed by George Irvin •DRE #00350576 • Executive Brokers, sm

Bought with Diane Britto •DRE #01065211 • Intero Real Estate Services

Redfin checked: a few seconds ago

•Source:bridgeMLS, Bay East AOR, or Contra Costa AOR #11145462

Redfin Estimate

$2,425,124

$1.5M since sold in September 2002$117K since August

Recently sold homes
Estimate history
Homes for sale

This home's estimate is 36.5% lower than the average sale price ($3.82M) 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 JUN 12, 2026
$2,810,000
B
4 beds3.5 baths2,442 sq ft
1125 Glen Rd, Lafayette, CA 94549
SOLD AUG 26, 2026
$4,800,000
C
4 beds3.5 baths4,033 sq ft
3954 S Peardale Dr, Lafayette, CA 94549
SOLD NOV 26, 2025
$2,290,000
D
4 beds3.5 baths3,152 sq ft
3643 Brook St, 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 JUL 9, 2026
$4,800,000
F
4 beds3.5 baths4,511 sq ft
1165 Glen Rd, Lafayette, CA 94549

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Earn from this home

Sell

$2,067,805

Est. take-home

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Refinance

Est. cash available

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Rent

$8,789/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

New listings for sale

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OPEN SAT, 2PM TO 4PM
$1,495,000
3 beds2 baths1,820 sq ft
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5 beds3.5 baths4,075 sq ft
20 Northridge Ln, Lafayette, CA 94549
NEW 25 HRS AGO
$12,000,000
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NEW 28 HRS AGO
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$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
5 beds4 baths3,450 sq ft
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See all

Provided by Redfin

Sale history for 3646 Happy Valley Rd

Date

Event

Price

bridgeMLS, Bay East AOR, or Contra Costa AOR #41137402

Jun 25, 2026

Listing Removed

—

Jun 5, 2026

Listed

bridgeMLS, Bay East AOR, or Contra Costa AOR #11145462

Sep 10, 2002

Sold

$950,000

$284/sq ft

Jul 29, 2002

Listing Removed

—

Jun 27, 2002

Listed

$999,900

$299/sq ft

bridgeMLS, Bay East AOR, or Contra Costa AOR #11139103

Jun 26, 2002

Listing Removed

—

bridgeMLS, Bay East AOR, or Contra Costa AOR #10245943

Jan 9, 1998

Listing Removed

—

Oct 19, 1997

Sold

$680,000

$203/sq ft

Oct 12, 1997

Listed

$689,000

$206/sq ft

bridgeMLS, Bay East AOR, or Contra Costa AOR #27245943

Jan 9, 1998

Sold

$680,000

$203/sq ft

Oct 19, 1997

Listing Removed

—

Oct 12, 1997

Listed

$689,000

$206/sq ft

Public Records

Jun 1, 1988

Sold

$299,000

$89/sq ft

Year

Property tax

Land + Additions

Assessment*

2025

$17,473 (+1.7%)

$812,507 + $635,224

$1,447,731

2024

$17,175 (+1.8%)

$796,576 + $622,769

$1,419,345

2023

$16,874 (+1.6%)

$780,957 + $610,558

$1,391,515

2022

$16,615 (+3.0%)

$765,645 + $598,587

$1,364,232

2021

$16,134 (+1.7%)

$750,633 + $586,850

$1,337,483

2020

$15,865 (+2.9%)

$735,915 + $575,344

$1,311,259

2019

$15,424 (+3.7%)

$728,370 + $541,732

$1,270,102

2018

$14,881 (+1.7%)

$714,089 + $531,110

$1,245,199

2017

$14,626 (+1.9%)

$686,361 + $510,488

$1,196,849

2016

$14,351 (+2.8%)

$686,361 + $510,488

$1,196,849

2015

$13,962 (+0.9%)

$672,903 + $500,479

$1,173,382

2014

$13,836 (+1.2%)

$649,813 + $483,306

$1,133,119

2013

$13,675 (+3.1%)

$649,813 + $483,306

$1,133,119

2012

$13,264 (+1.5%)

$646,877 + $481,122

$1,127,999

2011

$13,062 (+2.2%)

$634,194 + $471,689

$1,105,883

2010

$12,775 (+0.5%)

$621,759 + $462,441

$1,084,200

2009

$12,714 (+2.7%)

$617,113 + $458,985

$1,076,098

2008

$12,385

$618,580 + $460,076

$1,078,656

Tax history for 3646 Happy Valley Rd

Year

Property tax

Land + Additions

Assessment*

2025

$17,473 (+1.7%)

$812,507 + $635,224

$1,447,731

2024

$17,175 (+1.8%)

$796,576 + $622,769

$1,419,345

2023

$16,874 (+1.6%)

$780,957 + $610,558

$1,391,515

2022

$16,615 (+3.0%)

$765,645 + $598,587

$1,364,232

2021

$16,134 (+1.7%)

$750,633 + $586,850

$1,337,483

2020

$15,865 (+2.9%)

$735,915 + $575,344

$1,311,259

2019

$15,424 (+3.7%)

$728,370 + $541,732

$1,270,102

2018

$14,881 (+1.7%)

$714,089 + $531,110

$1,245,199

2017

$14,626 (+1.9%)

$686,361 + $510,488

$1,196,849

2016

$14,351 (+2.8%)

$686,361 + $510,488

$1,196,849

2015

$13,962 (+0.9%)

$672,903 + $500,479

$1,173,382

2014

$13,836 (+1.2%)

$649,813 + $483,306

$1,133,119

2013

$13,675 (+3.1%)

$649,813 + $483,306

$1,133,119

2012

$13,264 (+1.5%)

$646,877 + $481,122

$1,127,999

2011

$13,062 (+2.2%)

$634,194 + $471,689

$1,105,883

2010

$12,775 (+0.5%)

$621,759 + $462,441

$1,084,200

2009

$12,714 (+2.7%)

$617,113 + $458,985

$1,076,098

2008

$12,385

$618,580 + $460,076

$1,078,656

*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
Permits

Beds

Baths

3.5

Stories

Lot width

—

Lot depth

—

Lot size

13,939

Year renovated

2020

Sq. Ft.

3,347

Year built

1949

Style

Single Family Residential

County

Contra Costa County

APN

2441800501

Parking Spaces

Basement

Accessible

HOA Dues

—

Garage

Yes

Features

Pool

Last updated by owner on Aug 12, 2021.

Mar 12, 2021 • Final

Building/residential/al/alteration

Install a new metal patio cover at the back of the house and replace windows and doors. Install new exterior lighting on the building and landscape. The interior shearwall in the garage is omitted from the scope.

Electrical

Remodel

Nov 4, 2020 • Final

Building - residential re-roof

Tear off the existing roof and replace it with a new single-ply roof system on a flat 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

Parking

Parking Information
Has Attached Garage
Garage Spaces: 2
Covered Spaces: 2
Parking Features: Attached, Garage, Off Street, Side Yard Access, Garage Door Opener

Interior

Bathroom Information
# of Bathrooms Total: 4
# of Bathrooms Full: 3
# of Bathrooms Partial: 1
Other Bathrooms Included Features: Shower Over Tub, Stall Shower, Tub

Interior Features
Interior Features: Au Pair, Family Room, Formal Dining Room, In-Law Floorplan, Breakfast Bar, Counter - Solid Surface
Appliances: Dishwasher, Disposal, Gas Range, Microwave, Oven, Self Cleaning Oven, Gas Water Heater
Laundry Features: 220 Volt Outlet, Laundry Closet
Upper Level Features: 1 Bath, Primary Bedrm Suite - 1
Street Level Features: 3 Bedrooms, 2.5 Baths, Laundry Facility
Fireplaces Total: 2
Has Fireplace
Flooring: Hardwood, Linoleum, Carpet

Room Information
Kitchen Features: Breakfast Bar,Counter - Solid Surface,Dishwasher,Garbage Disposal,Gas Range/Cooktop,Microwave,Oven Built-in,Self-Cleaning Oven,Other
Rooms Total: 10
Fireplace Features: Family Room, Living Room, Wood Burning

Exterior

Building Information
Construction Materials: Wood Siding
Building Area Total: 3,347
Foundation Details: Raised, Slab

Exterior Features
Exterior Features: Back Yard, Front Yard, Side Yard, Sprinklers Back

Pool Information
Pool Features: Gas Heat, In Ground, Pool Sweep, Spa
Has Private Pool
Has Spa

Property Information
Living Area: 3347
Living Area Units: Square Feet
Property Type: Residential
Property Sub Type: Single Family Residence
Year Built: 1949

Lot Information
Lot Size Square Feet: 13939
Lot Size Area: 0.32
Lot Size Units: Acres
Lot Size Acres: 0.32
Lot Features: Level
Zoning: R-4

Utilities

Utility Information
Water Source: Public
Sewer: Public Sewer

Heating & Cooling
Has Heating
Heating: Forced Air, Natural Gas
Cooling: No Air Conditioning

Location

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

Public facts

Beds: 4
Baths: 3.5
Sq. Ft.: 3,347
Stories: 2.0
Parking Spaces: 2
Basement: No
Accessible: No
Lot Size: 0.32 acres
Style: Single Family Residential
Year Built: 1949
Year Renovated: 2020
County: Contra Costa County
APN: 2441800501
HOA Dues: —
Garage: Yes
Features: Pool

Home facts updated by owner on Aug 12, 2021

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

81/ 100

Very good sunlight

Sunscore

This home receives average direct sun exposure in the zip code. There appears to be minimal shading by surrounding buildings, terrain, and vegetation.

9.8 hrs

5.5 hrs

JuneDecember

Provided by Shadowmap

Estimated sale price

$2.30M – $2.79M

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Home values near 3646 Happy Valley Rd

Data from public records.

Address	Redfin Estimate
3648 Happy Valley Rd, Lafayette, CA 4 Beds \| 3.5 Baths \| 3689 Sq. Ft.	$3,365,441
3635 Happy Valley Ln, Lafayette, CA 3 Beds \| 2 Baths \| 1699 Sq. Ft.	$1,437,658

Address	Redfin Estimate
3644 Happy Valley Rd Apartment A, Lafayette, CA 4 Beds \| 3.5 Baths \| 3481 Sq. Ft.	$3,539,736
3629 Happy Valley Ln, Lafayette, CA 3 Beds \| 2 Baths \| 1645 Sq. Ft.	$1,808,152

Address	Redfin Estimate
3644 Happy Valley Rd Apartment B, Lafayette, CA 4 Beds \| 4 Baths \| 2720 Sq. Ft.	$2,159,010
3618 Happy Valley Ln, Lafayette, CA 3 Beds \| 3 Baths \| 1784 Sq. Ft.	$1,376,022

Property information provided by bridgeMLS, Bay East AOR, or Contra Costa AOR when last listed in 2002. 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

Earn from this home

Market trends in 94549, CA

Sale history for 3646 Happy Valley Rd

Tax history for 3646 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 3646 Happy Valley Rd

More real estate resources