OFF MARKET

Off Market Jul 2021 for $850K

$842,511

Est. refi paymentEst. refi $6,510/mo

•

3,030

sq ft

3405 Keystone Loop, Discovery Bay, CA 94505

About this home

You will be thrilled with the love an care this home has been given by it's original owners! Wonderful corner lot with lovely views of the lake and 3 car tandem garage. The inviting community pool is sparkling and waiting for you to enjoy! The homes boasts beautiful hardwood floors and an amazing floorplan with a street level Primary Bedroom Suite! They should all be built this way!!! Upstairs enjoy a finished loft area and 3 more bedrooms! The back yard is beautifully landscaped with lighting features throughout! Don't miss this beauty!

Single-familyProperty Type

2003Year Built

7,100 sq ftLot Size

$278Est. Price/Sq.Ft.

3 car garageParking

Listed by Julie Hanson •DRE #00885143 • Corcoran Icon Properties

Bought with Jaz Chand •DRE #01751823 • Merrill Signature Properties

Redfin checked: a minute ago

•Source:bridgeMLS, Bay East AOR, or Contra Costa AOR #40955856

Redfin Estimate

$842,511

$7,489 since sold in July 2021$7,000 since August

Recently sold homes
Estimate history
Homes for sale

This home's estimate is 14.5% higher than the average sale price ($736K) of 6 comparable homes.

SOLD AUG 18, 2026
$680,000
A
4 beds2.5 baths2,613 sq ft
2466 Yosemite Way, Discovery Bay, CA 94505
SOLD MAY 19, 2026
$800,000
B
4 beds3 baths2,913 sq ft
2350 Winchester Loop, Discovery Bay, CA 94505
SOLD JUN 18, 2026
$690,000
C
4 beds3 baths2,302 sq ft
2072 Bridgeport Loop, Discovery Bay, CA 94505
SOLD JAN 8, 2026
$770,000
D
4 beds3 baths2,723 sq ft
5672 Arcadia Cir, Discovery Bay, CA 94505
SOLD OCT 24, 2025
$725,000
E
4 beds2.5 baths3,030 sq ft
3507 Keystone 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

$184,869

Est. take-home

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Refinance

Est. cash available

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Rent

$3,943/mo

Redfin rental estimate

List your home for rent

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 SUN, 12PM TO 2PM
$450,000
2 beds2 baths1,248 sq ft
5679 Schooner Loop, Discovery Bay, CA 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
$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
$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 3405 Keystone Loop

Year

Property tax

Land + Additions

Assessment*

2025

$10,878 (+3.1%)

$135,882 + $634,118

$770,000

2024

$10,551 (+2.0%)

$141,177 + $658,823

$800,000

2023

$10,341 (−6.9%)

$141,176 + $658,824

$800,000

2022

$11,102 (+40.2%)

$138,000 + $642,000

$780,000

2021

$7,921 (+2.9%)

$150,000 + $700,000

$850,000

2020

$7,695 (+1.1%)

$164,183 + $400,484

$564,667

2019

$7,612 (+7.5%)

$157,447 + $384,053

$541,500

2018

$7,083 (+0.6%)

$154,685 + $377,315

$532,000

2017

$7,042 (+9.1%)

$145,381 + $354,619

$500,000

2016

$6,455 (+12.6%)

$145,381 + $354,619

$500,000

2015

$5,735 (+4.7%)

$136,804 + $333,696

$470,500

2014

$5,480 (+16.2%)

$113,543 + $276,957

$390,500

2013

$4,715 (+5.2%)

$113,543 + $276,957

$390,500

2012

$4,483 (+8.5%)

$93,917 + $229,083

$323,000

2011

$4,133 (+0.5%)

$87,956 + $214,544

$302,500

2010

$4,112 (+1.7%)

$79,088 + $192,912

$272,000

2009

$4,045 (−29.3%)

$81,124 + $197,876

$279,000

2008

$5,721

$81,124 + $197,876

$279,000

Tax history for 3405 Keystone Loop

Year

Property tax

Land + Additions

Assessment*

2025

$10,878 (+3.1%)

$135,882 + $634,118

$770,000

2024

$10,551 (+2.0%)

$141,177 + $658,823

$800,000

2023

$10,341 (−6.9%)

$141,176 + $658,824

$800,000

2022

$11,102 (+40.2%)

$138,000 + $642,000

$780,000

2021

$7,921 (+2.9%)

$150,000 + $700,000

$850,000

2020

$7,695 (+1.1%)

$164,183 + $400,484

$564,667

2019

$7,612 (+7.5%)

$157,447 + $384,053

$541,500

2018

$7,083 (+0.6%)

$154,685 + $377,315

$532,000

2017

$7,042 (+9.1%)

$145,381 + $354,619

$500,000

2016

$6,455 (+12.6%)

$145,381 + $354,619

$500,000

2015

$5,735 (+4.7%)

$136,804 + $333,696

$470,500

2014

$5,480 (+16.2%)

$113,543 + $276,957

$390,500

2013

$4,715 (+5.2%)

$113,543 + $276,957

$390,500

2012

$4,483 (+8.5%)

$93,917 + $229,083

$323,000

2011

$4,133 (+0.5%)

$87,956 + $214,544

$302,500

2010

$4,112 (+1.7%)

$79,088 + $192,912

$272,000

2009

$4,045 (−29.3%)

$81,124 + $197,876

$279,000

2008

$5,721

$81,124 + $197,876

$279,000

*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

7,100 Sq. Ft.

Year renovated

2003

Sq. Ft.

3,030

Year built

2003

Style

Single Family Residential

County

Contra Costa County

APN

0114210016

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

Jul 30, 2003 • Final

Building/residential/r/new single family-duplex

New construction

Feb 20, 2003 • Final

Building/residential/r/new single family-duplex

Construct a new single-family home based on a specific plan.

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
Garage Spaces: 3
Covered Spaces: 3
Parking Features: Tandem, Garage Door Opener

Interior

Virtual Tour

Bathroom Information
# of Bathrooms Total: 3
# of Bathrooms Full: 2
# of Bathrooms Partial: 1
Other Bathrooms Included Features: Shower Over Tub
Primary Bathroom Included Features: Stall Shower, Tub, Double Sinks, Walk-In Closet

Interior Features
Appliances: Gas Range
Laundry Features: Laundry Room
Upper Level Features: 3 Bedrooms, 1 Bath
Street Level Features: 1.5 Baths, Primary Bedrm Suite - 1
Window Features: Double Pane Windows
Fireplaces Total: 1
Has Fireplace
Flooring: Engineered Wood

Room Information
Kitchen Features: Gas Range/Cooktop
Rooms Total: 10
Fireplace Features: Family Room

Exterior

Building Information
Building Area Total: 3,030
Builder Name: Hoffman

Exterior Features
Exterior Features: Back Yard, Side Yard, Landscape Back
Fencing: Fenced

Pool Information
Pool Features: Community

Property Information
Living Area: 3030
Living Area Units: Square Feet
Property Type: Residential
Property Sub Type: Single Family Residence
Year Built: 2003

Lot Information
Lot Size Square Feet: 7100
Lot Size Area: 0.16
Lot Size Units: Acres
Lot Size Acres: 0.16
Lot Features: Corner Lot

Utilities

Utility Information
Water Source: Public
Sewer: Public Sewer

Heating & Cooling
Has Heating
Heating: Zoned
Cooling: Zoned

Location

Homeowners Association Information
Has Association
Association Amenities: Pool, Gated
Association Name: LAKESHORE HOA
Association Fee: $205
Association Fee Includes: Common Area Maint, Management Fee, Reserves, Security/Gate Fee
Association Fee Frequency: Monthly

School Information
High School District: Liberty (925) 634-2166

Public facts

Beds: 4
Baths: 3.0
Sq. Ft.: 3,030
Stories: 2.0
Lot Size: 7,100 square feet
Style: Single Family Residential
Year Built: 2003
Year Renovated: 2003
County: Contra Costa County
APN: 0114210016

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 • 4.4mi

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

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

$801,000 – $969,000

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Nearby similar homes

$850,000

5 beds4 baths3,917 sq ft

3159 Castle Rock Loop, Discovery Bay, CA 94505

NEW CONSTRUCTION

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NEW CONSTRUCTION

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OPEN SAT, 1PM TO 5PM

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NEW CONSTRUCTION

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New listings for sale in 94505

OPEN SUN, 12PM TO 2PM

$450,000

2 beds2 baths1,248 sq ft

5679 Schooner Loop, Discovery Bay, CA 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

$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 SOON3D WALKTHROUGH

$849,000

4 beds3 baths2,455 sq ft

1280 Saint Andrews Dr, Discovery Bay, CA 94505

$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 3405 Keystone Loop

Data from public records.

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
3435 Keystone Loop, Discovery Bay, CA 5 Beds \| 4 Baths \| 4011 Sq. Ft.	$846,595

Address	Redfin Estimate
3423 Keystone Loop, Discovery Bay, CA 5 Beds \| 4 Baths \| 3517 Sq. Ft.	$816,938
3554 Keystone Loop, Discovery Bay, CA 4 Beds \| 3 Baths \| 3030 Sq. Ft.	$830,158

Property information provided by bridgeMLS, Bay East AOR, or Contra Costa AOR when last listed in 2021. 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 3405 Keystone Loop

Tax history for 3405 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 3405 Keystone Loop

More real estate resources