Google satellite image for 3546 Keystone Loop, Discovery Bay, CA 94505

OFF MARKET

$746,969

•

3 ba

•

2,562

sq ft

3546 Keystone Loop, Discovery Bay, CA 94505

About this home

3546 Keystone Loop is a 2,562 square foot house on a 7,500 square foot lot with 4 bedrooms and 3 bathrooms. Based on Redfin's Discovery Bay data, we estimate the home's value is $746,969.

Single-familyProperty Type

2003Year Built

7,500 sq ftLot Size

$292Est. Price/Sq.Ft.

Source:Public Records

Redfin Estimate

$746,969

$4,000 since August

Recently sold homes
Estimate history
Homes for sale

This home's estimate is 1.5% higher than the average sale price ($736K) of 6 comparable homes.

SOLD JUN 18, 2026
$690,000
A
4 beds3 baths2,302 sq ft
2072 Bridgeport Loop, Discovery Bay, CA 94505
SOLD AUG 18, 2026
$680,000
B
4 beds2.5 baths2,613 sq ft
2466 Yosemite Way, Discovery Bay, CA 94505
SOLD JAN 8, 2026
$770,000
C
4 beds3 baths2,723 sq ft
5672 Arcadia Cir, Discovery Bay, CA 94505
SOLD MAY 19, 2026
$800,000
D
4 beds3 baths2,913 sq ft
2350 Winchester Loop, Discovery Bay, CA 94505
SOLD DEC 19, 2025
$725,000
E
3 beds2.5 baths2,609 sq ft
2078 Bridgeport Loop, Discovery Bay, CA 94505
SOLD AUG 19, 2026
$750,000
F
4 beds3 baths2,585 sq ft
1915 Edgeview Way, Discovery Bay, CA 94505

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Earn from this home

Sell

$707,276

Est. take-home

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Rent

$3,654/mo

Redfin rental estimate

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Market trends in 94505, CA

Last updated August 2026

Buyer's Market

Seller's Market

Seller's market

Sale-to-List Price

98.3%

+0.3% MoM

Median sale price

$799K

$35K MoM

Avg. days on market

27d

9 days MoM

Recently sold homes

6 MoM

New listings for sale

$549,999
4 beds2.5 baths1,782 sq ft
4108 Regatta Dr, Discovery Bay, CA 94505
COMING SOON
$574,900
3 beds2 baths1,484 sq ft
3733 Catamaran Ct, Discovery Bay, CA 94505
$1,100,000
5 beds3 baths2,779 sq ft
124 Tennyson Ct, Discovery Bay, CA 94505
$850,000
5 beds4 baths3,917 sq ft
3159 Castle Rock Loop, Discovery Bay, CA 94505
COMING SOON
$685,000
4 beds2.5 baths1,706 sq ft
3524 Sailboat Dr, Discovery Bay, CA 94505
REDFIN COMING SOON
$849,000
4 beds3 baths2,455 sq ft
1280 Saint Andrews Dr, Discovery Bay, CA 94505
OPEN TODAY, 1PM TO 4PM
$799,000
4 beds3 baths2,762 sq ft
2353 Wayfarer Dr, Discovery Bay, CA 94505
$1,075,000
4 beds2.5 baths2,493 sq ft
1650 Riverlake Rd, Discovery Bay, CA 94505
$3,200,000
7 beds8 baths7,424 sq ft
2200 Sunset Pt, Discovery Bay, CA 94513
$785,000
3 beds2 baths1,868 sq ft
2244 Colonial Ct, Discovery Bay, CA 94505
See all

Provided by Redfin

Sale history for 3546 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

$8,652 (+5.1%)

$159,515 + $449,414

$608,929

2024

$8,228 (+1.6%)

$156,388 + $440,602

$596,990

2023

$8,100 (+1.7%)

$153,322 + $431,963

$585,285

2022

$7,966 (+2.4%)

$150,316 + $423,494

$573,810

2021

$7,779 (+0.5%)

$147,369 + $415,191

$562,560

2020

$7,743 (+1.3%)

$144,480 + $407,050

$551,530

2019

$7,647 (+4.2%)

$142,999 + $402,877

$545,876

2018

$7,339 (+7.5%)

$140,196 + $394,978

$535,174

2017

$6,828 (+9.2%)

$125,874 + $354,626

$480,500

2016

$6,251 (+5.5%)

$125,874 + $354,626

$480,500

2015

$5,924 (+9.5%)

$118,277 + $333,223

$451,500

2014

$5,409 (+29.1%)

$100,594 + $283,406

$384,000

2013

$4,191 (−2.6%)

$100,594 + $283,406

$384,000

2012

$4,302 (+10.6%)

$72,040 + $202,960

$275,000

2011

$3,891 (−4.9%)

$74,922 + $211,078

$286,000

2010

$4,090 (+1.4%)

$65,491 + $184,509

$250,000

2009

$4,034 (−26.4%)

$75,000 + $202,000

$277,000

2008

$5,483

$72,826 + $205,174

$278,000

Tax history for 3546 Keystone Loop

Year

Property tax

Land + Additions

Assessment*

2025

$8,652 (+5.1%)

$159,515 + $449,414

$608,929

2024

$8,228 (+1.6%)

$156,388 + $440,602

$596,990

2023

$8,100 (+1.7%)

$153,322 + $431,963

$585,285

2022

$7,966 (+2.4%)

$150,316 + $423,494

$573,810

2021

$7,779 (+0.5%)

$147,369 + $415,191

$562,560

2020

$7,743 (+1.3%)

$144,480 + $407,050

$551,530

2019

$7,647 (+4.2%)

$142,999 + $402,877

$545,876

2018

$7,339 (+7.5%)

$140,196 + $394,978

$535,174

2017

$6,828 (+9.2%)

$125,874 + $354,626

$480,500

2016

$6,251 (+5.5%)

$125,874 + $354,626

$480,500

2015

$5,924 (+9.5%)

$118,277 + $333,223

$451,500

2014

$5,409 (+29.1%)

$100,594 + $283,406

$384,000

2013

$4,191 (−2.6%)

$100,594 + $283,406

$384,000

2012

$4,302 (+10.6%)

$72,040 + $202,960

$275,000

2011

$3,891 (−4.9%)

$74,922 + $211,078

$286,000

2010

$4,090 (+1.4%)

$65,491 + $184,509

$250,000

2009

$4,034 (−26.4%)

$75,000 + $202,000

$277,000

2008

$5,483

$72,826 + $205,174

$278,000

*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

Aug 30, 2017 • Final

Building - residential plumbing

Replace the existing water heater.

Plumbing

Water heater

May 14, 2012 • Final

Building - residential plumbing

Remove and replace a water heater.

Plumbing

Water heater

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: 9

Exterior

Property Information
Subdivision Name: SUBDIVISION 8430
Living Sq. Ft: 2,562
Ground Floor Sq. Ft: 2,562
Building Sq. Ft: 2,562
# of Stories: 1
Legal Description: T8430 L28

Parking & Garage Information
Garage/Parking Sq. Ft: 495

Lot Information
# of Buildings: 1
Land Sq. Ft: 7,500
Legal Lot Number: 28
Acres: 0.1722
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.: 2,562
Stories: 1.0
Lot Size: 7,500 square feet
Style: Single Family Residential
Year Built: 2003
Year Renovated: 2004
County: Contra Costa County
APN: 0114210289

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 • 4.5mi

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

2/10 Fire Factor

0.00% chance of being 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

$710,000 – $860,000

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Nearby similar homes

$850,000

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NEW CONSTRUCTION

$722,340

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Listing provided by Zillow

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LISTED BY REDFIN3D WALKTHROUGH

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New listings for sale in 94505

$549,999

4 beds2.5 baths1,782 sq ft

4108 Regatta Dr, Discovery Bay, CA 94505

COMING SOON

$574,900

3 beds2 baths1,484 sq ft

3733 Catamaran Ct, Discovery Bay, CA 94505

$1,100,000

5 beds3 baths2,779 sq ft

124 Tennyson Ct, Discovery Bay, CA 94505

$850,000

5 beds4 baths3,917 sq ft

3159 Castle Rock Loop, Discovery Bay, CA 94505

COMING SOON

$685,000

4 beds2.5 baths1,706 sq ft

3524 Sailboat Dr, Discovery Bay, CA 94505

REDFIN COMING SOON

$849,000

4 beds3 baths2,455 sq ft

1280 Saint Andrews Dr, Discovery Bay, CA 94505

OPEN TODAY, 1PM TO 4PM

$799,000

4 beds3 baths2,762 sq ft

2353 Wayfarer Dr, Discovery Bay, CA 94505

$1,075,000

4 beds2.5 baths2,493 sq ft

1650 Riverlake Rd, Discovery Bay, CA 94505

$3,200,000

7 beds8 baths7,424 sq ft

2200 Sunset Pt, Discovery Bay, CA 94513

Home values near 3546 Keystone Loop

Data from public records.

Address	Redfin Estimate
3405 Keystone Loop, Discovery Bay, CA 4 Beds \| 2.5 Baths \| 3030 Sq. Ft.	$842,511
3423 Keystone Loop, Discovery Bay, CA 5 Beds \| 4 Baths \| 3517 Sq. Ft.	$816,938

Address	Redfin Estimate
3411 Keystone Loop, Discovery Bay, CA 5 Beds \| 4 Baths \| - Sq. Ft.	$794,463
3429 Keystone Loop, Discovery Bay, CA 6 Beds \| 4 Baths \| 4285 Sq. Ft.	$906,386

Address	Redfin Estimate
3417 Keystone Loop, Discovery Bay, CA 4 Beds \| 3 Baths \| 2562 Sq. Ft.	$744,732
3521 Keystone Loop, Discovery Bay, CA 5 Beds \| 4 Baths \| 4088 Sq. Ft.	$855,199

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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 3546 Keystone Loop

Tax history for 3546 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 3546 Keystone Loop

More real estate resources