OFF MARKET

Off Market Mar 2017 for $532K

$781,617

Est. refi paymentEst. refi $2,171/mo

•

2,562

sq ft

3533 Keystone Loop, Discovery Bay, CA 94505

About this home

Single-familyProperty Type

2003Year Built

7,000 sq ftLot Size

$305Est. Price/Sq.Ft.

2 car garageParking

Listed by Cathie Marples •DRE #00639971 • Marples & Associates

Bought with Cathie Marples •DRE #00639971 • Marples & Associates

Redfin checked: 3 minutes ago

•Source:bridgeMLS, Bay East AOR, or Contra Costa AOR #40768061

Redfin Estimate

$781,617

$250K since sold in March 2017$6,000 since August

Recently sold homes
Estimate history
Homes for sale

This home's estimate is 6.1% higher than the average sale price ($737K) 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
BOUGHT WITH REDFIN JUN 15, 2026
$740,000
D
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 JUL 7, 2026
$740,000
E
5 beds3 baths3,092 sq ft
6372 Crystal Springs Cir, Discovery Bay, CA 94505
SOLD MAY 19, 2026
$800,000
F
4 beds3 baths2,913 sq ft
2350 Winchester Loop, Discovery Bay, CA 94505

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Earn from this home

Sell

$400,129

Est. take-home

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Refinance

Est. cash available

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Rent

$3,747/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

OPEN SAT, 12PM TO 2PM
$1,100,000
5 beds3 baths2,779 sq ft
124 Tennyson Ct, Discovery Bay, CA 94505
NEW 20 HRS AGO
$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 SAT, 1PM TO 4PM
$799,000
4 beds3 baths2,762 sq ft
2353 Wayfarer Dr, Discovery Bay, CA 94505
OPEN SAT, 12PM TO 3PM
$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
$1,699,000
4 beds2.5 baths2,773 sq ft
4818 Cabrillo Pt, Discovery Bay, CA 94505
$1,359,900
4 beds3.5 baths4,271 sq ft
1917 Windward Pt, Discovery Bay, CA 94505
Portfolio Real Estate, Portfolio Real Estate
See all

Provided by Redfin

Sale history for 3533 Keystone Loop

Date

Event

Price

bridgeMLS, Bay East AOR, or Contra Costa AOR #40768061

Mar 31, 2017

Sold

$532,000

$208/sq ft

Mar 31, 2017

Sold

$532,000

$208/sq ft

Feb 20, 2017

Pending

—

Jan 20, 2017

Listed

$549,500

$214/sq ft

Jan 20, 2017

Listed

$549,500

$214/sq ft

Public Records

Oct 29, 1998

Sold

$2,583,227

$1,008/sq ft

Year

Property tax

Land + Additions

Assessment*

2025

$8,876 (+5.1%)

$142,052 + $487,719

$629,771

2024

$8,445 (+1.6%)

$139,267 + $478,156

$617,423

2023

$8,313 (+1.7%)

$136,537 + $468,781

$605,318

2022

$8,176 (+2.4%)

$133,860 + $459,590

$593,450

2021

$7,984 (−0.5%)

$131,236 + $450,579

$581,815

2020

$8,025 (+1.2%)

$128,663 + $441,745

$570,408

2019

$7,928 (+4.0%)

$127,344 + $437,216

$564,560

2018

$7,623 (+2.1%)

$124,848 + $428,644

$553,492

2017

$7,468 (+18.2%)

$121,838 + $410,162

$532,000

2016

$6,321 (+5.4%)

$121,838 + $410,162

$532,000

2015

$5,995 (+9.4%)

$103,288 + $347,712

$451,000

2014

$5,480 (+28.6%)

$87,829 + $295,671

$383,500

2013

$4,262 (−2.6%)

$87,829 + $295,671

$383,500

2012

$4,374 (+10.4%)

$62,866 + $211,634

$274,500

2011

$3,963 (−5.0%)

$65,385 + $220,115

$285,500

2010

$4,173 (+1.7%)

$57,141 + $192,359

$249,500

2009

$4,105 (−26.0%)

$63,553 + $213,947

$277,500

2008

$5,548

$63,553 + $213,947

$277,500

Tax history for 3533 Keystone Loop

Year

Property tax

Land + Additions

Assessment*

2025

$8,876 (+5.1%)

$142,052 + $487,719

$629,771

2024

$8,445 (+1.6%)

$139,267 + $478,156

$617,423

2023

$8,313 (+1.7%)

$136,537 + $468,781

$605,318

2022

$8,176 (+2.4%)

$133,860 + $459,590

$593,450

2021

$7,984 (−0.5%)

$131,236 + $450,579

$581,815

2020

$8,025 (+1.2%)

$128,663 + $441,745

$570,408

2019

$7,928 (+4.0%)

$127,344 + $437,216

$564,560

2018

$7,623 (+2.1%)

$124,848 + $428,644

$553,492

2017

$7,468 (+18.2%)

$121,838 + $410,162

$532,000

2016

$6,321 (+5.4%)

$121,838 + $410,162

$532,000

2015

$5,995 (+9.4%)

$103,288 + $347,712

$451,000

2014

$5,480 (+28.6%)

$87,829 + $295,671

$383,500

2013

$4,262 (−2.6%)

$87,829 + $295,671

$383,500

2012

$4,374 (+10.4%)

$62,866 + $211,634

$274,500

2011

$3,963 (−5.0%)

$65,385 + $220,115

$285,500

2010

$4,173 (+1.7%)

$57,141 + $192,359

$249,500

2009

$4,105 (−26.0%)

$63,553 + $213,947

$277,500

2008

$5,548

$63,553 + $213,947

$277,500

*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

7,000 Sq. Ft.

Year renovated

2004

Sq. Ft.

2,562

Year built

2003

Style

Single Family Residential

County

Contra Costa County

APN

0114210222

Parking Spaces

—

Basement

—

Accessible

—

HOA Dues

—

Garage

—

Features

—

Last updated by owner on Jul 13, 2026.

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

Feb 2, 2016 • Final

Building - residential plumbing

Remove and replace a water heater in its existing location.

Plumbing

Water heater

Oct 9, 2003 • Final

Building/residential/r/new single family-duplex

New construction

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 Door Opener

Interior

Bathroom Information
# of Bathrooms Total: 3
# of Bathrooms Full: 3

Interior Features
Interior Features: Family Room, Counter - Solid Surface
Appliances: Water Softener
Laundry Features: 220 Volt Outlet
Street Level Features: Main Entry
Fireplaces Total: 1
Has Fireplace
Flooring: Hardwood

Room Information
Kitchen Features: 220 Volt Outlet,Counter - Solid Surface
Rooms Total: 9
Fireplace Features: Family Room

Exterior

Building Information
Construction Materials: Stucco
Building Area Total: 2,562

Exterior Features
Exterior Features: Back Yard, Front Yard
Fencing: Fenced

Property Information
Living Area: 2562
Living Area Units: Square Feet
Property Type: Residential
Property Sub Type: Single Family Residence
Year Built: 2003

Lot Information
Lot Size Square Feet: 7000
Lot Size Area: 0.16
Lot Size Units: Acres
Lot Size Acres: 0.16
Lot Features: Regular

Utilities

Utility Information
Water Source: Public
Electric: 220 Volts in Kitchen
Sewer: Public Sewer

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

Location

Homeowners Association Information
Has Association
Association Amenities: Clubhouse, Greenbelt, Playground, Pool, Gated
Association Name: LAKESHORE HOA
Association Fee: $183
Association Fee Includes: Common Area Maint, Management Fee, Security/Gate Fee
Association Fee Frequency: Monthly

Public facts

Beds: 4
Baths: 3.0
Sq. Ft.: 2,562
Stories: 1.0
Lot Size: 7,000 square feet
Style: Single Family Residential
Year Built: 2003
Year Renovated: 2004
County: Contra Costa County
APN: 0114210222

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

7 days above 102° expected this year, 15 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

$743,000 – $899,000

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Nearby similar homes

NEW 20 HRS AGO

$850,000

5 beds4 baths3,917 sq ft

3159 Castle Rock Loop, Discovery Bay, CA 94505

$840,000

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7295 Keyesport Way, Discovery Bay, CA 94505

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2652 Crescent Way, Discovery Bay, CA 94505

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Undisclosed address, Discovery Bay, CA 94505

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6391 Crystal Springs Cir, Discovery Bay, CA 94505

SHORT SALE

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Pacific Real Estate

New listings for sale in 94505

OPEN SAT, 12PM TO 2PM

$1,100,000

5 beds3 baths2,779 sq ft

124 Tennyson Ct, Discovery Bay, CA 94505

NEW 20 HRS AGO

$850,000

5 beds4 baths3,917 sq ft

3159 Castle Rock Loop, Discovery Bay, CA 94505

COMING SOON

$685,000

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3524 Sailboat Dr, Discovery Bay, CA 94505

REDFIN COMING SOON3D WALKTHROUGH

$849,000

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1280 Saint Andrews Dr, Discovery Bay, CA 94505

OPEN SAT, 1PM TO 4PM

$799,000

4 beds3 baths2,762 sq ft

2353 Wayfarer Dr, Discovery Bay, CA 94505

OPEN SAT, 12PM TO 3PM

$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

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4 beds2.5 baths2,773 sq ft

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Home values near 3533 Keystone Loop

Data from public records.

Address	Redfin Estimate
3507 Keystone Loop, Discovery Bay, CA 4 Beds \| 2.5 Baths \| 3030 Sq. Ft.	$801,284
3527 Keystone Loop, Discovery Bay, CA 5 Beds \| 4 Baths \| 4011 Sq. Ft.	$866,281

Address	Redfin Estimate
3515 Keystone Loop, Discovery Bay, CA 4 Beds \| 4 Baths \| 3518 Sq. Ft.	$823,463
3539 Keystone Loop, Discovery Bay, CA 4 Beds \| 2 Baths \| 2033 Sq. Ft.	$709,671

Address	Redfin Estimate
3521 Keystone Loop, Discovery Bay, CA 5 Beds \| 4 Baths \| 4088 Sq. Ft.	$855,199
3545 Keystone Loop, Discovery Bay, CA 4 Beds \| 3 Baths \| 3517 Sq. Ft.	$804,922

Property information provided by bridgeMLS, Bay East AOR, or Contra Costa AOR when last listed in 2017. This data may not match . 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 94505, CA

Sale history for 3533 Keystone Loop

Tax history for 3533 Keystone Loop

Public record

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 3533 Keystone Loop

More real estate resources