Google satellite image for 3554 Keystone Loop, Discovery Bay, CA 94505

OFF MARKET

$842,448

•

3 ba

•

3,030

sq ft

3554 Keystone Loop, Discovery Bay, CA 94505

About this home

3554 Keystone Loop is a 3,030 square foot house on a 7,900 square foot lot with 4 bedrooms and 3 bathrooms. Based on Redfin's Discovery Bay data, we estimate the home's value is $842,448.

Single-familyProperty Type

2003Year Built

7,900 sq ftLot Size

$278Est. Price/Sq.Ft.

Source:Public Records

Redfin Estimate

$842,448

$3,000 since July

Recently sold homes
Estimate history
Homes for sale

This home's estimate is 7% higher than the average sale price ($787K) of 6 comparable homes.

BOUGHT WITH REDFIN JUN 15, 2026
$740,000
A
4 beds3.5 baths3,097 sq ft
327 Mendocino Way, Discovery Bay, CA 94505
Iron Valley Real Estate NorCal, Iron Valley Real Estate NorCal
SOLD FEB 17, 2026
$865,000
B
4 beds3 baths3,484 sq ft
2233 Hampshire Dr, Discovery Bay, CA 94505
SOLD MAY 19, 2026
$800,000
C
4 beds3 baths2,913 sq ft
2350 Winchester Loop, Discovery Bay, CA 94505
SOLD APR 21, 2026
$879,000
D
5 beds3 baths3,139 sq ft
5647 Arcadia Cir, Discovery Bay, CA 94505
SOLD JUN 18, 2026
$690,000
E
4 beds3 baths2,302 sq ft
2072 Bridgeport Loop, Discovery Bay, CA 94505
SOLD APR 30, 2026
$750,000
F
4 beds3 baths3,517 sq ft
716 Seminole Ct, Discovery Bay, CA 94505

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Earn from this home

Sell

$797,809

Est. take-home

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Rent

$3,840/mo

Redfin rental estimate

List your home for rent

Market trends in 94505, CA

Last updated July 2026

Buyer's Market

Seller's Market

Seller's market

Sale-to-List Price

98.0%

0.2% MoM

Median sale price

$764K

$20K MoM

Avg. days on market

36d

14 days MoM

Recently sold homes

6 MoM

New listings for sale

NEW 10 HRS AGO
$589,000
3 beds2.5 baths2,042 sq ft
3713 Yacht Dr, Discovery Bay, CA 94505
NEW 19 HRS AGO
$999,999
4 beds2.5 baths3,554 sq ft
4230 Driftwood Pl, Discovery Bay, CA 94505
House Real Estate
NEW 30 HRS AGO
$649,000
3 beds2 baths2,018 sq ft
4890 Discovery Pt, Discovery Bay, CA 94505
EARLY ACCESS
$849,000
4 beds3 baths2,455 sq ft
1280 Saint Andrews Dr, Discovery Bay, CA 94505
OPEN SAT, 1PM TO 3PM
$860,000
3 beds2 baths2,228 sq ft
4841 Spinnaker Way, Discovery Bay, CA 94505
$3,650,000
9 beds8 baths9,000 sq ft
2200 Sunset Pt #2210, Discovery Bay, CA 94505
(650) 802-8050
OPEN SAT, 12PM TO 3PM
$849,000
3 beds2 baths2,159 sq ft
2212 Colonial Ct, Discovery Bay, CA 94505
OPEN SAT, 1PM TO 4PM
$719,000
4 beds2.5 baths2,136 sq ft
2158 Newport Ct, Discovery Bay, CA 94505
$699,000
4 beds2.5 baths2,136 sq ft
2236 NE Newport Ct, Discovery Bay, CA 94505
Realty ONE Group Zoom
$498,000
2 beds2 baths1,354 sq ft
Undisclosed address, Discovery Bay, CA 94505
See all

Provided by Redfin

Sale history for 3554 Keystone Loop

As the MLS and public records start to fill up, we'll list the details here.

Year

Property tax

Land + Additions

Assessment*

2025

$9,824 (+4.9%)

$159,515 + $558,429

$717,944

2024

$9,362 (+1.6%)

$156,388 + $547,480

$703,868

2023

$9,217 (+1.7%)

$153,322 + $536,746

$690,068

2022

$9,065 (+12.3%)

$150,316 + $526,222

$676,538

2021

$8,071 (+4.8%)

$147,369 + $515,904

$663,273

2020

$7,701 (+1.0%)

$128,534 + $449,966

$578,500

2019

$7,623 (+7.5%)

$120,425 + $421,575

$542,000

2018

$7,093 (+0.6%)

$118,425 + $414,575

$533,000

2017

$7,052 (+9.2%)

$111,316 + $389,684

$501,000

2016

$6,460 (+12.5%)

$111,316 + $389,684

$501,000

2015

$5,740 (+4.6%)

$104,650 + $366,350

$471,000

2014

$5,485 (+16.2%)

$86,875 + $304,125

$391,000

2013

$4,721 (+5.0%)

$86,875 + $304,125

$391,000

2012

$4,494 (+8.4%)

$71,878 + $251,622

$323,500

2011

$4,144 (+0.6%)

$67,434 + $236,066

$303,500

2010

$4,118 (+1.3%)

$60,657 + $212,343

$273,000

2009

$4,065 (−30.1%)

$62,102 + $217,398

$279,500

2008

$5,813

$62,102 + $217,398

$279,500

Tax history for 3554 Keystone Loop

Year

Property tax

Land + Additions

Assessment*

2025

$9,824 (+4.9%)

$159,515 + $558,429

$717,944

2024

$9,362 (+1.6%)

$156,388 + $547,480

$703,868

2023

$9,217 (+1.7%)

$153,322 + $536,746

$690,068

2022

$9,065 (+12.3%)

$150,316 + $526,222

$676,538

2021

$8,071 (+4.8%)

$147,369 + $515,904

$663,273

2020

$7,701 (+1.0%)

$128,534 + $449,966

$578,500

2019

$7,623 (+7.5%)

$120,425 + $421,575

$542,000

2018

$7,093 (+0.6%)

$118,425 + $414,575

$533,000

2017

$7,052 (+9.2%)

$111,316 + $389,684

$501,000

2016

$6,460 (+12.5%)

$111,316 + $389,684

$501,000

2015

$5,740 (+4.6%)

$104,650 + $366,350

$471,000

2014

$5,485 (+16.2%)

$86,875 + $304,125

$391,000

2013

$4,721 (+5.0%)

$86,875 + $304,125

$391,000

2012

$4,494 (+8.4%)

$71,878 + $251,622

$323,500

2011

$4,144 (+0.6%)

$67,434 + $236,066

$303,500

2010

$4,118 (+1.3%)

$60,657 + $212,343

$273,000

2009

$4,065 (−30.1%)

$62,102 + $217,398

$279,500

2008

$5,813

$62,102 + $217,398

$279,500

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

Zoning and permits

Zoning
Permits

P-1

Planned Unit District

A large-scale integrated development or a general plan special area of concern provides an opportunity for, and requires cohesive design when flexible regulations are applied; whereas the application of conventional regulation, designed primarily for individual lot development, to a large-scale development or special area may create a monotonous and inappropriate neighborhood. The planned unit district is intended to allow diversification in the relationship of various uses, buildings, structures, lot sizes and open space while insuring substantial compliance with the general plan and the intent of the county code in requiring adequate standards necessary to satisfy the requirements of the public health, safety and general welfare. These standards shall be observed without unduly inhibiting the advantages of large-scale site or special area planning.

Permitted uses

Include but are not limited to:

Housing-Single unit

Mar 7, 2007 • Final

Building/residential/mir/miscellaneous residential

Construct an attached patio cover according to the provided plans.

Addition

Apr 15, 2005 • Final

Building - residential electrical

Install an underground electrical line for a water garden pump.

Electrical

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

Room Information
# of Rooms: 10

Exterior

Property Information
Subdivision Name: SUBDIVISION 8430
Living Sq. Ft: 3,030
Ground Floor Sq. Ft: 1,952
Building Sq. Ft: 3,030
# of Stories: 2
Legal Description: T8430 L27

Parking & Garage Information
Garage/Parking Sq. Ft: 615

Lot Information
# of Buildings: 1
Land Sq. Ft: 7,900
Legal Lot Number: 27
Acres: 0.1814
Zoning Code: P-1
County Use Description: SINGLE FAMILY DETACHED WITH MA

Financial

Assessor Information
Assessment Year: 2026

Public facts

Beds: 4
Baths: 3.0
Sq. Ft.: 3,030
Stories: 2.0
Lot Size: 7,900 square feet
Style: Single Family Residential
Year Built: 2003
Year Renovated: 2004
County: Contra Costa County
APN: 0114210271

Home facts updated by county records on Jul 13, 2026

Around this home

Schools

Timber Point Elementary School

Public K-5 • Assigned • 0.4mi

6/10

Excelsior Middle School

Public 6-8 • Assigned • 2.8mi

4/10

Liberty High School

Public 9-12 • Assigned • 4.4mi

7/10

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

1/10 Fire Factor

Unlikely to be in a wildfire in next 30 years

6/10 Heat Factor

6 days above 102° expected this year, 13 days in 30 years

1/10 Wind Factor

Minimal risk of severe winds over next 30 years

9/10 Air Factor

20 unhealthy days expected this year, 21 days in 30 years

Provided by First Street

Historical weather

Discovery Bay, CA • 94505

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 12.6 hours in June and 4.7 hours in December, placing it above the U.S. average for solar exposure.

12.6 hrs

4.7 hrs

JuneDecember

Provided by Shadowmap

Estimated sale price

$801,000 – $969,000

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Nearby similar homes

NEW 19 HRS AGO

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RE/MAX Executive

New listings for sale in 94505

NEW 10 HRS AGO

$589,000

3 beds2.5 baths2,042 sq ft

3713 Yacht Dr, Discovery Bay, CA 94505

NEW 19 HRS AGO

$999,999

4 beds2.5 baths3,554 sq ft

4230 Driftwood Pl, Discovery Bay, CA 94505

House Real Estate

NEW 30 HRS AGO

$649,000

3 beds2 baths2,018 sq ft

4890 Discovery Pt, Discovery Bay, CA 94505

EARLY ACCESSREDFIN COMING SOON

$849,000

4 beds3 baths2,455 sq ft

1280 Saint Andrews Dr, Discovery Bay, CA 94505

OPEN SAT, 1PM TO 3PM

$860,000

3 beds2 baths2,228 sq ft

4841 Spinnaker Way, Discovery Bay, CA 94505

$3,650,000

9 beds8 baths9,000 sq ft

2200 Sunset Pt #2210, Discovery Bay, CA 94505

(650) 802-8050

OPEN SAT, 12PM TO 3PM

$849,000

3 beds2 baths2,159 sq ft

2212 Colonial Ct, Discovery Bay, CA 94505

OPEN SAT, 1PM TO 4PM

$719,000

4 beds2.5 baths2,136 sq ft

2158 Newport Ct, Discovery Bay, CA 94505

$699,000

4 beds2.5 baths2,136 sq ft

2236 NE Newport Ct, Discovery Bay, CA 94505

Realty ONE Group Zoom

Home values near 3554 Keystone Loop

Data from public records.

Address	Redfin Estimate
3405 Keystone Loop, Discovery Bay, CA 4 Beds \| 2.5 Baths \| 3030 Sq. Ft.	$835,791
3423 Keystone Loop, Discovery Bay, CA 5 Beds \| 4 Baths \| 3517 Sq. Ft.	$820,863

Address	Redfin Estimate
3411 Keystone Loop, Discovery Bay, CA 5 Beds \| 4 Baths \| - Sq. Ft.	$813,823
3429 Keystone Loop, Discovery Bay, CA 6 Beds \| 4 Baths \| 4285 Sq. Ft.	$909,412

Address	Redfin Estimate
3417 Keystone Loop, Discovery Bay, CA 4 Beds \| 3 Baths \| 2562 Sq. Ft.	$754,079
3527 Keystone Loop, Discovery Bay, CA 5 Beds \| 4 Baths \| 4011 Sq. Ft.	$868,819

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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 94505, CA

Sale history for 3554 Keystone Loop

Tax history for 3554 Keystone Loop

Zoning and permits

Property details

Around this home

Schools

Lifestyle

Climate risks

Historical weather

Sun exposure

Nearby similar homes

New listings for sale in 94505

Home values near 3554 Keystone Loop

More real estate resources