OFF MARKET

Off market jul 2025 for $2.8M

$2,789,053

Est. refi paymentEst. refi $284/mo

•

3,552

sq ft

1666 Castle Hill Rd, Walnut Creek, CA 94595

About this home

Two Great Lots - One Fabulous Home! Originally part of the historic Kaiser hospital & relocated to its current location in 1950s, this timeless home is offered for the first time in 52 years. Nestled on a flat, private .74 AC lot, it’s surrounded by redwoods, rose garden, fruit trees, large level lawn, & sparkling pool—ideal for entertaining, play, & quiet retreat. The 4-bedroom, 2-bath home also includes an office & offers exceptional indoor-outdoor living. Main level features a formal living room (Kaiser doctors’ & nurses’ tea room) w/vaulted wood-beamed ceilings, brick fireplace, hardwood floors & large windows. Dining room flows into a chef’s kitchen and features custom cabinetry, marble counters, spacious pantry, & an oversized Wolf range w/grill & griddle. Eat-in kitchen opens to the garden & includes marble-topped desk nook. Nearby family room w/built-ins & garden access - a perfect space for gatherings. Two main-floor bedrooms, a full bath, office, & large laundry room complete the level. Upstairs, primary bedroom & a second bedroom enjoy garden views & a lovely bathroom w/soaking tub & shower. The subdivided rear lot w/separate access offers exciting future possibilities. All just minutes from top Walnut Creek schools, downtown shops & restaurants, & commute routes.

Single-familyProperty Type

1935Year Built

0.74 acresLot Size

$785Est. Price/Sq.Ft.

2 car garageParking

Listed by Finola Jane Fellner •DRE #01428834 • Compass

Bought with Joe Frazzano •DRE #00982431 • Compass

Redfin checked: 3 minutes ago

•Source:bridgeMLS, Bay East AOR, or Contra Costa AOR #41101383

Redfin Estimate

$2,789,053

$11K since sold in July 2025$18K since September

Recently sold homes
Estimate history
Homes for sale

This home's estimate is 30.5% higher than the average sale price ($2.14M) of 6 comparable homes.

SOLD AUG 21, 2026
$2,550,000
A
4 beds3.5 baths3,659 sq ft
61 Crest Ave, Alamo, CA 94507
SOLD APR 23, 2026
$1,649,000
B
4 beds2 baths2,296 sq ft
205 Castle Hill Ranch Rd, Walnut Creek, CA 94595
SOLD JUN 26, 2026
$3,150,000
C
4 beds3 baths3,294 sq ft
196 Castle Hill Ranch Rd, Walnut Creek, CA 94595
SOLD SEP 22, 2026
$1,790,000
D
4 beds2 baths2,263 sq ft
367 Shady Glen Rd, Walnut Creek, CA 94596
SOLD AUG 31, 2026
$2,385,000
E
4 beds3 baths2,638 sq ft
16 Crest Estate Dr, Alamo, CA 94507
SOLD MAR 27, 2026
$1,300,000
F
5 beds3 baths3,489 sq ft
351 Montecillo Dr, Walnut Creek, CA 94595

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Earn from this home

Sell

$448,628

Est. take-home

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Refinance

Est. cash available

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Rent

$6,846/mo

Redfin rental estimate

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Market trends in 94595, CA

Last updated September 2026

Buyer's Market

Seller's Market

Seller's market

Sale-to-List Price

99.6%

0.2% MoM

Median sale price

$658K

$55K MoM

Avg. days on market

40d

16 days MoM

Recently sold homes

154

12 MoM

New listings for sale

$620,000
2 beds2 baths1,251 sq ft
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5920 Horsemans Cyn Unit 1B, Walnut Creek, CA 94595
OPEN OCT 18, 1PM TO 4PM
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1348 Rockledge Ln #4, Walnut Creek, CA 94595
OPEN OCT 13, 10AM TO 1PM
$639,000
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2037 Ptarmigan Dr #2, Walnut Creek, CA 94595
NEW 30 HRS AGO
$450,000
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1108 Skycrest Dr #2, Walnut Creek, CA 94595
NEW 31 HRS AGO
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3081 Golden Rain Rd - Entry 24 #2, Walnut Creek, CA 94595
NEW 32 HRS AGO
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1549 Oakmont Dr #4, Walnut Creek, CA 94595
OPEN SUN, 1PM TO 4PM
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See all

Provided by Redfin

Sale history for 1666 Castle Hill Rd

Year

Property tax

Land + Additions

Assessment*

2025

$2,485 (+2.0%)

$1,700,000 + $1,000,000

$2,700,000

2024

$2,436 (+2.7%)

$34,517 + $110,100

$144,617

2023

$2,371 (+1.8%)

$33,841 + $107,942

$141,783

2022

$2,328 (+6.7%)

$33,178 + $105,826

$139,004

2021

$2,182 (+3.3%)

$32,528 + $103,751

$136,279

2020

$2,113 (+0.9%)

$31,891 + $101,717

$133,608

2019

$2,095 (+3.9%)

$31,564 + $100,675

$132,239

2018

$2,017 (+3.1%)

$30,946 + $98,701

$129,647

2017

$1,957 (+3.3%)

$29,746 + $94,869

$124,615

2016

$1,895 (+3.3%)

$29,746 + $94,869

$124,615

2015

$1,835 (+2.5%)

$29,163 + $93,009

$122,172

2014

$1,790 (+2.7%)

$28,163 + $89,818

$117,981

2013

$1,743 (+4.3%)

$28,163 + $89,818

$117,981

2012

$1,671 (+2.9%)

$28,036 + $89,413

$117,449

2011

$1,625 (+2.7%)

$27,487 + $87,660

$115,147

2010

$1,582 (−11.7%)

$26,949 + $85,942

$112,891

2009

$1,792 (−12.1%)

$26,748 + $85,300

$112,048

2008

$2,039

$26,812 + $85,503

$112,315

Tax history for 1666 Castle Hill Rd

Year

Property tax

Land + Additions

Assessment*

2025

$2,485 (+2.0%)

$1,700,000 + $1,000,000

$2,700,000

2024

$2,436 (+2.7%)

$34,517 + $110,100

$144,617

2023

$2,371 (+1.8%)

$33,841 + $107,942

$141,783

2022

$2,328 (+6.7%)

$33,178 + $105,826

$139,004

2021

$2,182 (+3.3%)

$32,528 + $103,751

$136,279

2020

$2,113 (+0.9%)

$31,891 + $101,717

$133,608

2019

$2,095 (+3.9%)

$31,564 + $100,675

$132,239

2018

$2,017 (+3.1%)

$30,946 + $98,701

$129,647

2017

$1,957 (+3.3%)

$29,746 + $94,869

$124,615

2016

$1,895 (+3.3%)

$29,746 + $94,869

$124,615

2015

$1,835 (+2.5%)

$29,163 + $93,009

$122,172

2014

$1,790 (+2.7%)

$28,163 + $89,818

$117,981

2013

$1,743 (+4.3%)

$28,163 + $89,818

$117,981

2012

$1,671 (+2.9%)

$28,036 + $89,413

$117,449

2011

$1,625 (+2.7%)

$27,487 + $87,660

$115,147

2010

$1,582 (−11.7%)

$26,949 + $85,942

$112,891

2009

$1,792 (−12.1%)

$26,748 + $85,300

$112,048

2008

$2,039

$26,812 + $85,503

$112,315

*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

0.4 Acres

Year renovated

1955

Sq. Ft.

3,552

Year built

1935

Style

Single Family Residential

County

Contra Costa County

APN

1844020675

Parking Spaces

—

Basement

—

Accessible

—

HOA Dues

—

Garage

—

Features

—

Last updated by owner on Jul 13, 2026.

Single-Family Residential District

The purpose of the Single-Family Residential Zoning District is to provide for single-family residential development that is consistent with the General Plan. The intent is to promote and encourage a suitable environment for family life. This would include those conditionally permitted uses that are generally an integral part of single-family residential neighborhoods and that are compatible with residential activities including parks, playgrounds, religious assembly, day care, and schools.

Permitted uses

Include but are not limited to:

Housing-Single unit
Housing-Senior
Infrastructure

Apr 13, 2026 • Final

Mechanical, electrical, or plumbing only

Relocate the main electrical panel.

Electrical

Mar 17, 2026 • Active

Building new construction, additions, alterations or sign

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
Garage Spaces: 2
Covered Spaces: 2
Parking Features: Attached, Int Access From Garage, Garage Door Opener

Interior

Virtual Tour

Bathroom Information
# of Bathrooms Total: 2
# of Bathrooms Full: 2
Other Bathrooms Included Features: Solid Surface, Stall Shower, Tile, Updated Baths, Window
Primary Bathroom Included Features: Solid Surface, Split Bath, Stall Shower, Tile, Updated Baths, Double Vanity, Window

Interior Features
Interior Features: Family Room, Office, Study, Breakfast Bar, Breakfast Nook, Counter - Solid Surface, Pantry, Updated Kitchen
Appliances: Dishwasher, Double Oven, Gas Range, Grill Built-In, Plumbed For Ice Maker, Free-Standing Range, Refrigerator, Trash Compactor, Gas Water Heater
Laundry Features: Dryer, Laundry Room, Washer, Cabinets, Sink
Upper Level Features: 2 Bedrooms, 1 Bath
Street Level Features: 2 Bedrooms, 1 Bath, Laundry Facility, No Steps to Entry, Main Entry
Fireplaces Total: 1
Has Fireplace
Flooring: Hardwood, Tile, Carpet

Room Information
Kitchen Features: Breakfast Bar,Breakfast Nook,Counter - Solid Surface,Dishwasher,Double Oven,Eat-in Kitchen,Disposal,Gas Range/Cooktop,Grill Built-in,Ice Maker Hookup,Kitchen Island,Pantry,Range/Oven Free Standing,Refrigerator,Trash Compactor,Updated Kitchen
Rooms Total: 9
Fireplace Features: Brick, Gas Starter, Living Room, Raised Hearth, Wood Burning
Basement: Crawl Space

Exterior

Building Information
Construction Materials: Brick, Stucco
Building Area Total: 3,552

Exterior Features
Patio And Porch Features: Patio, Front Porch
Exterior Features: Garden, Back Yard, Front Yard, Garden/Play, Side Yard, Storage, Landscape Back, Landscape Front, Private Entrance
Fencing: Fenced, Front Yard
Roof: Shingle

Pool Information
Pool Features: In Ground, Pool Cover, Pool Sweep, Outdoor Pool
Spa Features: Heated
Has Private Pool
Has Spa

Property Information
Living Area: 3552
Living Area Units: Square Feet
Property Type: Residential
Property Sub Type: Single Family Residence
Year Built: 1935

Lot Information
Lot Size Square Feet: 32234
Lot Size Area: 0.74
Lot Size Units: Acres
Lot Size Acres: 0.74
Lot Features: Level, Premium Lot, Rectangular Lot, Back Yard, Front Yard, Landscaped, Private, Flag Lot

Utilities

Heating & Cooling
Has Heating
Heating: Forced Air
Cooling: Central Air

Location

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

Public facts

Beds: 3
Baths: 2.0
Sq. Ft.: 3,552
Stories: 2.0
Lot Size: 0.4 acres
Style: Single Family Residential
Year Built: 1935
Year Renovated: 1955
County: Contra Costa County
APN: 1844020675

Home facts updated by county records on Jul 13, 2026

Around this home

Schools

Parkmead Elementary School

Public K-5 • Assigned • 0.8mi

8/10

Walnut Creek Intermediate School

Public 6-8 • Assigned • 1.9mi

9/10

Las Lomas High School

Public 9-12 • Assigned • 0.6mi

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

0.93% chance of being in a wildfire in next 30 years

4/10 Heat Factor

8 days above 96° 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

Walnut Creek, CA • 94595

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

$2.65M – $3.21M

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Home values near 1666 Castle Hill Rd

Data from public records.

Address	Redfin Estimate
1656 Castle Hill Road, Walnut Creek, CA 4 Beds \| 4 Baths \| 2614 Sq. Ft.	$1,756,599
51 Castle Hill Court, Walnut Creek, CA 4 Beds \| 2 Baths \| 2178 Sq. Ft.	$1,922,214

Address	Redfin Estimate
1697 Castle Hill Road, Walnut Creek, CA 2 Beds \| 1 Baths \| 1639 Sq. Ft.	$1,294,922
50 Castle Hill Court, Walnut Creek, CA 4 Beds \| 2 Baths \| 1956 Sq. Ft.	$1,491,168

Address	Redfin Estimate
41 Castle Hill Court, Walnut Creek, CA 4 Beds \| 2 Baths \| 1956 Sq. Ft.	$1,608,916
1700 Castle Hill Road, Walnut Creek, CA 2 Beds \| 1 Baths \| 1548 Sq. Ft.	$1,222,001

Property information provided by bridgeMLS, Bay East AOR, or Contra Costa AOR when last listed in 2025. This data may not match . Learn more.

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