Google street view image for 9 Rancho Diablo Rd, Lafayette, CA 94549

Off market may 2023 for $2.5M

$2,905,482

Est. refi paymentEst. refi $16,516/mo

•

3,610

sq ft

9 Rancho Diablo Rd, Lafayette, CA 94549

About this home

Incredible Mid-century modern home atop the hills of Happy Valley. Originally built by Kirk & Smith the property boasts spectacular views, sought after location and functional floor plan. Formal entry is highlighted by the living atrium with floor to ceiling windows. Living room features walls of windows creating a tree-top living feel & breathtaking views of Mt. Diablo. Kitchen offers abundant cabinetry & counter space, informal dining area & island cooktop. Wake up to sweeping views of the hills from the primary bedroom with oak floors, ensuite bathroom with penny tile shower & dual sink vanity. Adjoining bedroom offers flexible space for office, home gym or nursery with barn door & deck/ hot tub access. Downstairs features spacious guest bedrooms, 1 ensuite, with large closets, sliding doors leading to the backyard and hall bath with shower over tub & dual sink vanity. Family room perfect for movie nights features wood burning fireplace & sliding glass doors leading to the pool. Backyard is highlighted by beach entry pool, expansive decks and mature fauna for a truly private retreat. Front yard large driveway with ample parking & play space. Located in one of the Bay Area's most coveted neighborhoods with award winning schools & convenient freeway location.

Single-familyProperty Type

1962Year Built

0.7 acresLot Size

$805Est. Price/Sq.Ft.

2 car garageParking

Listed by • Dudum Real Estate Group

•925-937-4000 (broker)

Bought with Paul Wong •DRE #DRE #01977499 • Coldwell Banker Realty

•510-339-4700 (broker)

Redfin checked: 2 minutes ago

•Source:San Francisco MLS #41024849

Redfin Estimate

$2,905,482

$405K since sold in May 2023$135K since October

Recently sold homes
Estimate history
Homes for sale

This home's estimate is 9.9% lower than the average sale price ($3.23M) of 6 comparable homes.

SOLD SEP 9, 2026
$3,550,000
A
5 beds3.5 baths3,890 sq ft
3907 Happy Valley Rd, Lafayette, CA 94549
SOLD JUL 27, 2026
$2,800,000
B
5 beds3.5 baths3,169 sq ft
1038 Pine Ln, 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 SEP 11, 2026
$2,250,000
D
4 beds4 baths3,627 sq ft
12 E Altarinda, Orinda, CA 94563
SOLD MAR 23, 2026
$2,650,000
E
5 beds3.5 baths3,434 sq ft
475 Dalewood Dr, Orinda, CA 94563
SOLD MAY 15, 2026
$3,300,000
F
4 beds4 baths3,530 sq ft
1122 Via Media, Lafayette, CA 94549

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Earn from this home

Sell

$880,944

Est. take-home

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Refinance

Est. cash available

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Rent

$9,423/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

101.4%

0.4% MoM

Median sale price

$1.8M

$151K MoM

Avg. days on market

17d

0 days MoM

Recently sold homes

9 MoM

New listings for sale

$1,400,000
3 beds2 baths2,054 sq ft
1063 Laurel Dr, Lafayette, CA 94549
3D WALKTHROUGH
$1,485,000
3 beds2 baths3,564 sq ft
799 Moraga Rd, Lafayette, CA 94549
REDFIN OPEN SAT, 1PM TO 4PM
$649,000
1 bed1 bath881 sq ft
1000 Dewing Ave #104, Lafayette, CA 94549
HOT HOME
$1,850,000
3 beds2 baths1,868 sq ft
954 Reliez Station Rd, Lafayette, CA 94549
3D WALKTHROUGH
$1,995,000
4 beds3.5 baths3,617 sq ft
905 Dana Highlands Ct, Lafayette, CA 94549
3D WALKTHROUGH
$630,322
2 beds2.5 baths1,109 sq ft
80 Woodbury Highlands Pl #14, Lafayette, CA 94549
OPEN SAT, 2PM TO 4PM
$899,000
3 beds2.5 baths1,731 sq ft
3279 Mt Diablo Ct #10, Lafayette, CA 94549
3D WALKTHROUGH
$2,599,000
5 beds3.5 baths4,075 sq ft
20 Northridge Ln, Lafayette, CA 94549
3D & VIDEO TOUR
$1,695,000
5 beds3.5 baths3,985 sq ft
34 Sunrise Ln, Lafayette, CA 94549
OPEN SAT, 2PM TO 4PM
$4,250,000
5 beds5 baths3,940 sq ft
1143 Upper Happy Valley Rd, Lafayette, CA 94549
See all

Provided by Redfin

Sale history for 9 Rancho Diablo Rd

Year

Property tax

Land + Additions

Assessment*

2026

$32,874 (+2.6%)

$1,910,174 + $895,845

$2,806,019

2025

$32,026 (+7.2%)

$1,910,174 + $895,845

$2,806,019

2024

$29,887 (+499.3%)

$1,872,720 + $878,280

$2,751,000

2023

$4,987 (+1.5%)

$1,836,000 + $714,000

$2,550,000

2022

$4,911 (+3.2%)

$81,808 + $280,660

$362,468

2021

$4,761 (+0.8%)

$80,204 + $275,157

$355,361

2020

$4,723 (+7.5%)

$78,632 + $269,762

$348,394

2019

$4,394 (+3.9%)

$77,826 + $266,996

$344,822

2018

$4,229 (+2.4%)

$76,300 + $261,761

$338,061

2017

$4,129 (−4.7%)

$73,338 + $251,598

$324,936

2016

$4,333 (+2.9%)

$73,338 + $251,598

$324,936

2015

$4,209 (+1.3%)

$71,900 + $246,665

$318,565

2014

$4,154 (+9.7%)

$69,433 + $238,201

$307,634

2013

$3,788 (+3.6%)

$69,433 + $238,201

$307,634

2012

$3,655 (+2.1%)

$69,120 + $237,125

$306,245

2011

$3,581 (+1.4%)

$67,765 + $232,476

$300,241

2010

$3,532 (−5.5%)

$66,437 + $227,918

$294,355

2009

$3,737 (−6.4%)

$65,941 + $226,215

$292,156

2008

$3,993

$66,098 + $226,753

$292,851

Tax history for 9 Rancho Diablo Rd

Year

Property tax

Land + Additions

Assessment*

2026

$32,874 (+2.6%)

$1,910,174 + $895,845

$2,806,019

2025

$32,026 (+7.2%)

$1,910,174 + $895,845

$2,806,019

2024

$29,887 (+499.3%)

$1,872,720 + $878,280

$2,751,000

2023

$4,987 (+1.5%)

$1,836,000 + $714,000

$2,550,000

2022

$4,911 (+3.2%)

$81,808 + $280,660

$362,468

2021

$4,761 (+0.8%)

$80,204 + $275,157

$355,361

2020

$4,723 (+7.5%)

$78,632 + $269,762

$348,394

2019

$4,394 (+3.9%)

$77,826 + $266,996

$344,822

2018

$4,229 (+2.4%)

$76,300 + $261,761

$338,061

2017

$4,129 (−4.7%)

$73,338 + $251,598

$324,936

2016

$4,333 (+2.9%)

$73,338 + $251,598

$324,936

2015

$4,209 (+1.3%)

$71,900 + $246,665

$318,565

2014

$4,154 (+9.7%)

$69,433 + $238,201

$307,634

2013

$3,788 (+3.6%)

$69,433 + $238,201

$307,634

2012

$3,655 (+2.1%)

$69,120 + $237,125

$306,245

2011

$3,581 (+1.4%)

$67,765 + $232,476

$300,241

2010

$3,532 (−5.5%)

$66,437 + $227,918

$294,355

2009

$3,737 (−6.4%)

$65,941 + $226,215

$292,156

2008

$3,993

$66,098 + $226,753

$292,851

*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

Stories

Lot width

—

Lot depth

—

Lot size

30,492

Year renovated

2005

Sq. Ft.

3,610

Year built

1962

Style

Single Family Residential

County

Contra Costa County

APN

2470320157

Parking Spaces

Basement

Accessible

HOA Dues

—

Garage

Yes

Features

Views, Pool

Last updated by owner on Feb 2, 2025.

Jun 25, 2025 • Final

Building - residential solar photovoltaic

Install a photovoltaic solar system and energy storage system on a residential building.

Battery

Electrical

Solar

May 27, 2025 • Final

Building/residential/ad/single family addition

Perform a full interior remodel of the kitchen, bathrooms, and bedrooms. Install new windows and doors, replace jalousie windows, and upgrade the electrical panel. Add a new air conditioning unit and two tankless water heaters, and convert the existing utility room and garage into habitable space.

Addition

Bathroom

Electrical

HVAC

Kitchen

Plumbing

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

Garage Information
Has Garage
# of Garage Spaces: 2
Has Attached Garage

Parking Information
Parking Features: Attached
# of Covered Spaces: 2

Interior

Bedrooms Information
# of Bedrooms: 5

Bathroom Information
Count of Bathrooms: 4
# of Full Bathrooms: 3
# of Half Bathrooms: 1

Interior Features
Laundry Features: Hookups Only, Inside Room
Has Heating
Heating: Zoned
Has Cooling
Cooling: Central Air, Zoned
Flooring: Carpet, Linoleum, Tile, Wood
Has Fireplace(s)
# of Fireplaces Total: 2
Fireplace Features: Family Room, Living Room
Appliances: Dishwasher, Gas Cooktop

Exterior

Exterior Features
Entry Level: 0

Building Information
Living Area: 3610
Living Area Units: Square Feet
Living Area Source: Assessor Auto-Fill
Building Area Total: 3610
Building Area Units: Square Feet
Building Area Source: Assessor Auto-Fill
Construction Materials: Wood Siding
Architectural Style: Other
Year Built: 1962
Roof: Composition, Shake, Shingle, Wood

Mobile Home Information
Mobile Dim Units: Feet

Pool Information
Pool Features: In Ground

Property Type
Property Type: Residential
Property SubType: Single Family Residence

Property Information
Property Condition: Original

Lot Information
Lot Features: Other
Lot Size Sq. Ft.: 30492
Lot Size Acres: 0.7
Lot Size Area: 30492
Lot Size Units: SqFt
Lot Size Units: Square Feet
Elevation: 0
Elevation Units: Feet

Utilities

Utility Information
Sewer: Public Sewer
Water Source: Public

Location

HOA Information
Association Fee: 0

Community Information
Subdivision Name: Upper Happy Vly

Public facts

Beds: 5
Baths: 5.0
Sq. Ft.: 3,610
Stories: 1.0
Parking Spaces: 2
Basement: No
Accessible: No
Lot Size: 0.7 acres
Style: Single Family Residential
Year Built: 1962
Year Renovated: 2005
County: Contra Costa County
APN: 2470320157
HOA Dues: —
Garage: Yes
Features: Views, Pool

Home facts updated by owner on Feb 2, 2025

Around this home

Schools

K - 12
Preschool & daycare

Happy Valley Elementary School

Public K-5 • Assigned • 0.7mi

8/10

M. H. Stanley Middle School

Public 6-8 • Assigned • 2.5mi

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

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)

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

$2.76M – $3.34M

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New listings for sale in 94549

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REDFIN OPEN SAT, 1PM TO 4PM3D WALKTHROUGH

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HOT HOME

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3D WALKTHROUGH

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3D & VIDEO TOUR

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Home values near 9 Rancho Diablo Rd

Data from public records.

Address	Redfin Estimate
10 Rancho Diablo Road, Lafayette, CA 3 Beds \| 3 Baths \| 2342 Sq. Ft.	$2,356,633
6 Rancho Diablo Road, Lafayette, CA 3 Beds \| 3 Baths \| 2212 Sq. Ft.	$2,129,095

Address	Redfin Estimate
1 Rancho Diablo Road, Lafayette, CA 4 Beds \| 3 Baths \| 3246 Sq. Ft.	$2,633,198
1227 Upper Happy Valley Road, Lafayette, CA 5 Beds \| 5.5 Baths \| 5502 Sq. Ft.	$4,442,488

Address	Redfin Estimate
4 Rancho Diablo Road, Lafayette, CA 3 Beds \| 2 Baths \| 1938 Sq. Ft.	$2,024,165
1207 Upper Happy Valley Road, Lafayette, CA 5 Beds \| 4 Baths \| 3586 Sq. Ft.	$3,043,676

Property information provided by San Francisco MLS when last listed in 2023. 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 9 Rancho Diablo Rd

Tax history for 9 Rancho Diablo 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 9 Rancho Diablo Rd

More real estate resources