OFF MARKET

Off Market May 2006 for $585K

$714,265

Est. refi paymentEst. refi $3,860/mo

•

2,044

sq ft

3500 Keystone Loop, Discovery Bay, CA 94514

About this home

Single-familyProperty Type

2003Year Built

7,824 sq ftLot Size

$349Est. Price/Sq.Ft.

2 car garageParking

Listed by Sarah Schnittker •DRE #01338910 • Sharp Realty

Contact: Off: 925-240-6683

Bought with Wendy Shearer • Keller Williams East County

Redfin checked: a minute ago

•Source:bridgeMLS, Bay East AOR, or Contra Costa AOR #40161129

Redfin Estimate

$714,265

$129K since sold in May 2006$18K since August

Recently sold homes
Estimate history
Homes for sale

This home's estimate is 4.9% higher than the average sale price ($681K) of 6 comparable homes.

SOLD AUG 17, 2026
$649,900
A
3 beds2 baths1,886 sq ft
705 Pardee Ct, Discovery Bay, CA 94505
SOLD SEP 4, 2026
$745,000
B
4 beds3 baths2,704 sq ft
1525 Coleridge Way, Discovery Bay, CA 94505
SOLD JAN 27, 2026
$600,000
C
4 beds3 baths2,205 sq ft
324 Coronado Ct, Discovery Bay, CA 94505
SOLD JUN 18, 2026
$690,000
D
4 beds3 baths2,302 sq ft
2072 Bridgeport Loop, Discovery Bay, CA 94505
SOLD AUG 18, 2026
$680,000
E
4 beds2.5 baths2,613 sq ft
2466 Yosemite Way, Discovery Bay, CA 94505
SOLD MAY 4, 2026
$721,305
F
3 beds2 baths2,178 sq ft
550 Lee Loop, Discovery Bay, CA 94505

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Earn from this home

Sell

$462,266

Est. take-home

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Est. cash available

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Rent

$3,458/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

97.7%

0.6% MoM

Median sale price

$792K

$8K MoM

Avg. days on market

34d

7 days MoM

Recently sold homes

2 MoM

New listings for sale

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OPEN SAT, 1PM TO 4PM
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Coldwell Banker Realty, Coldwell Banker Realty
COMING SOON
$799,000
3 beds2 baths2,168 sq ft
4681 Spinnaker Way, Discovery Bay, CA 94505
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7295 Keyesport Way, Discovery Bay, CA 94505
COMING SOON
$835,000
3 beds2.5 baths2,330 sq ft
7364 Bay Harbor Way, Discovery Bay, CA 94505
OPEN SAT, 12PM TO 3:30PM
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3694 Otter Brook Loop, Discovery Bay, CA 94505
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4880 Discovery Pt, Discovery Bay, CA 94505
$685,000
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3524 Sailboat Dr, Discovery Bay, CA 94505
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6171 Seneca Cir, Discovery Bay, CA 94505
$682,500
4 beds2 baths1,760 sq ft
2419 Imperial Ct, Discovery Bay, CA 94505
See all

Provided by Redfin

Sale history for 3500 Keystone Loop

Year

Property tax

Land + Additions

Assessment*

2025

$9,485 (+3.4%)

$225,979 + $435,021

$661,000

2024

$9,177 (+1.8%)

$230,082 + $442,918

$673,000

2023

$9,015

$230,000 + $443,000

$673,000

2022

$9,007 (+16.2%)

$224,955 + $433,045

$658,000

2021

$7,751 (+5.0%)

$224,955 + $433,045

$658,000

2020

$7,383 (−0.3%)

$187,690 + $361,310

$549,000

2019

$7,402 (+10.1%)

$175,383 + $337,617

$513,000

2018

$6,723 (+8.5%)

$175,383 + $337,617

$513,000

2017

$6,199 (+5.8%)

$144,614 + $278,386

$423,000

2016

$5,859 (+6.3%)

$144,614 + $278,386

$423,000

2015

$5,512 (−3.0%)

$141,879 + $273,121

$415,000

2014

$5,681 (+34.3%)

$139,828 + $269,172

$409,000

2013

$4,229 (+9.6%)

$139,828 + $269,172

$409,000

2012

$3,859 (+0.4%)

$95,213 + $183,287

$278,500

2011

$3,842 (+2.6%)

$83,931 + $161,569

$245,500

2010

$3,745 (−5.1%)

$83,931 + $161,569

$245,500

2009

$3,946 (−28.3%)

$83,931 + $161,569

$245,500

2008

$5,505

$92,308 + $177,692

$270,000

Tax history for 3500 Keystone Loop

Year

Property tax

Land + Additions

Assessment*

2025

$9,485 (+3.4%)

$225,979 + $435,021

$661,000

2024

$9,177 (+1.8%)

$230,082 + $442,918

$673,000

2023

$9,015

$230,000 + $443,000

$673,000

2022

$9,007 (+16.2%)

$224,955 + $433,045

$658,000

2021

$7,751 (+5.0%)

$224,955 + $433,045

$658,000

2020

$7,383 (−0.3%)

$187,690 + $361,310

$549,000

2019

$7,402 (+10.1%)

$175,383 + $337,617

$513,000

2018

$6,723 (+8.5%)

$175,383 + $337,617

$513,000

2017

$6,199 (+5.8%)

$144,614 + $278,386

$423,000

2016

$5,859 (+6.3%)

$144,614 + $278,386

$423,000

2015

$5,512 (−3.0%)

$141,879 + $273,121

$415,000

2014

$5,681 (+34.3%)

$139,828 + $269,172

$409,000

2013

$4,229 (+9.6%)

$139,828 + $269,172

$409,000

2012

$3,859 (+0.4%)

$95,213 + $183,287

$278,500

2011

$3,842 (+2.6%)

$83,931 + $161,569

$245,500

2010

$3,745 (−5.1%)

$83,931 + $161,569

$245,500

2009

$3,946 (−28.3%)

$83,931 + $161,569

$245,500

2008

$5,505

$92,308 + $177,692

$270,000

*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

7,500 Sq. Ft.

Year renovated

2004

Sq. Ft.

2,033

Year built

2003

Style

Single Family Residential

County

Contra Costa County

APN

0114210354

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

Property details

Parking

Parking Information
Has Attached Garage
Garage Spaces: 2
Covered Spaces: 2
Parking Features: Attached, Int Access From Garage, Side Yard Access, Garage Door Opener

Interior

Virtual Tour

Bathroom Information
# of Bathrooms Total: 2
# of Bathrooms Full: 2
Other Bathrooms Included Features: Shower Over Tub
Primary Bathroom Included Features: Stall Shower, Tub

Interior Features
Interior Features: Kitchen/Family Combo, Stone Counters, Eat-in Kitchen, Kitchen Island
Appliances: Dishwasher, Disposal, Gas Range, Plumbed For Ice Maker, Microwave, Oven, Gas Water Heater, Water Softener
Laundry Features: Gas Dryer Hookup, Hookups Only, Laundry Room
Street Level Features: 3 Bedrooms, 2 Baths, Primary Bedrm Suite - 1, Laundry Facility, Main Entry
Window Features: Window Coverings
Fireplaces Total: 1
Has Fireplace
Flooring: Linoleum, Tile, Carpet

Room Information
Kitchen Features: Counter - Stone,Dishwasher,Eat In Kitchen,Garbage Disposal,Gas Range/Cooktop,Ice Maker Hookup,Island,Microwave,Oven Built-in
Rooms Total: 7
Fireplace Features: Gas, Living Room

Exterior

Building Information
Construction Materials: Stone, Stucco
Building Area Total: 2,044
Builder Name: Hofman
Foundation Details: Slab

Exterior Features
Patio And Porch Features: Patio
Exterior Features: Back Yard, Front Yard, Side Yard, Sprinklers Automatic, Sprinklers Back, Sprinklers Front, Sprinklers Side
Door Features: Mirrored Closet Door(s)
Fencing: Fenced

Mobile Home Information
Model: Monterey

Property Information
Living Area: 2044
Living Area Units: Square Feet
Property Type: Residential
Property Sub Type: Single Family Residence
Year Built: 2003

Lot Information
Lot Size Square Feet: 7824
Lot Size Area: 0.18
Lot Size Units: Acres
Lot Size Acres: 0.18
Lot Features: Corner Lot, Regular

Utilities

Utility Information
Water Source: Public
Sewer: Public Sewer

Heating & Cooling
Has Heating
Heating: Forced Air
Cooling: Ceiling Fan(s), Central Air

Location

Homeowners Association Information
Has Association
Association Amenities: Pool, Gated
Association Name: LAKESHORE HOA
Association Fee: $150
Association Fee Includes: Common Area Maint, Security/Gate Fee
Association Fee Frequency: Monthly
HOA Transfer Fees: Paid by Buyer

School Information
High School District: Byron (925) 634-6644

Public facts

Beds: 3
Baths: 2.0
Sq. Ft.: 2,033
Stories: 1.0
Lot Size: 7,500 square feet
Style: Single Family Residential
Year Built: 2003
Year Renovated: 2004
County: Contra Costa County
APN: 0114210354

Home facts updated by county records on Jul 13, 2026

Around this home

Schools

Timber Point Elementary School

Public K-5 • Assigned • 0.5mi

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 • 94514

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

$679,000 – $822,000

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Nearby similar homes

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Home values near 3500 Keystone Loop

Data from public records.

Address	Redfin Estimate
3441 Keystone Loop, Discovery Bay, CA 4 Beds \| 2 Baths \| 2033 Sq. Ft.	$748,095
3459 Keystone Loop, Discovery Bay, CA 4 Beds \| 2.5 Baths \| 3030 Sq. Ft.	$788,846

Address	Redfin Estimate
3447 Keystone Loop, Discovery Bay, CA 4 Beds \| 3 Baths \| 2562 Sq. Ft.	$675,299
3465 Keystone Loop, Discovery Bay, CA 4 Beds \| 4 Baths \| 4088 Sq. Ft.	$819,040

Address	Redfin Estimate
3453 Keystone Loop, Discovery Bay, CA 3 Beds \| 3 Baths \| 3518 Sq. Ft.	$794,985
3471 Keystone Loop, Discovery Bay, CA 5 Beds \| 4 Baths \| 4011 Sq. Ft.	$1,015,902

Property information provided by bridgeMLS, Bay East AOR, or Contra Costa AOR when last listed in 2006. 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 3500 Keystone Loop

Tax history for 3500 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 3500 Keystone Loop

More real estate resources