OFF MARKET

Off Market Apr 2023 for $855K

$906,386

Est. refi paymentEst. refi $2,245/mo

•

4,285

sq ft

3429 Keystone Loop, Discovery Bay, CA 94505

About this home

Well cared for home in Lakeshore Gated Community. OWNED SOLAR SYSTEM, cost $31,000! NEW A/C & Furnace 2022 with Smart thermostat. This home is built for entertaining - Spacious kitchen features granite countertops, white cabinets & appliances - soo much space and adjacent to Family room. Formal Living room and Formal dining room. Large bedroom/bonus room downstairs AND a home office. Upstairs you will find another bonus/family room & built-in desk area. HUGE Primary bedrooms with sitting area, fireplace, walk-in closet and 2nd closet with mirrored doors. Primary bath has double sinks, make-up area & Jacuzzi tub. Quiet private yard to enjoy the weather!

Single-familyProperty Type

2003Year Built

7,200 sq ftLot Size

$212Est. Price/Sq.Ft.

2 car garageParking

Listed by Vickie Harris •DRE #01072497 • Legacy Real Estate & Assoc.

Bought with Donna Piscotty •DRE #01063858 • Bhhs Drysdale Properties

Redfin checked: a few seconds ago

•Source:bridgeMLS, Bay East AOR, or Contra Costa AOR #41021468

Redfin Estimate

$906,386

$51K since sold in April 2023$3,000 since August

Recently sold homes
Estimate history
Homes for sale

This home's estimate is 11.8% higher than the average sale price ($811K) of 6 comparable homes.

SOLD JUL 20, 2026
$849,900
A
6 beds4 baths4,088 sq ft
3438 Keystone Loop, Discovery Bay, CA 94505
SOLD BY REDFIN APR 14, 2026
$818,000
B
5 beds4 baths4,011 sq ft
3432 Keystone Loop, Discovery Bay, CA 94505
BOUGHT WITH REDFIN JUN 15, 2026
$740,000
C
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 APR 21, 2026
$879,000
D
5 beds3 baths3,139 sq ft
5647 Arcadia Cir, Discovery Bay, CA 94505
SOLD APR 3, 2026
$720,000
E
4 beds3.5 baths3,333 sq ft
5675 Arcadia Cir, Discovery Bay, CA 94505
SOLD MAR 20, 2026
$859,000
F
5 beds4 baths4,088 sq ft
6851 New Melones Cir, Discovery Bay, CA 94505

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Earn from this home

Sell

$217,435

Est. take-home

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Refinance

Est. cash available

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Rent

$4,370/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

NEW 15 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
COMING SOON
$1,100,000
5 beds3 baths2,779 sq ft
124 Tennyson Ct, 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

Redfin agents who toured

In a gated community of Discovery Bat. Very spacious in the interior with a separate den by the front entrance.
10 years ago• May not reflect the current state of the home
Cody Speer
Redfin Associate agent

Sale history for 3429 Keystone Loop

Date

Event

Price

bridgeMLS, Bay East AOR, or Contra Costa AOR #41021468

Apr 20, 2023

Sold

$855,000

$200/sq ft

Mar 22, 2023

Pending

—

Mar 14, 2023

Listed

$875,000

$204/sq ft

bridgeMLS, Bay East AOR, or Contra Costa AOR #40880025

Nov 4, 2019

Sold

$635,000

$148/sq ft

Oct 19, 2019

Pending

—

Sep 16, 2019

Contingent

—

Aug 29, 2019

Listed

$635,000

$148/sq ft

+33

Beautiful, well-built Hoffman house in Lakeshore, gated community. Lowest priced;only $148/sq. ft. for nearly 4300 sq. ft home. Owner’s yearly average is under$200/mo. for gas & electric. There are 4 BRs and 4 full baths + 2 rooms on 1 st floor that could be used as BRs, man-cave, playroom, etc. A huge 2 d floor loft is great as office or teen area. This house has many creative options. Rear bay of Tandem garage was upgraded at build to a finished room. Side-yard concrete slab + widened driveway for additional parking or shed. Upgraded cabinetry throughout. 2 gas fireplaces. “Spa-like” master bath with Jacuzzi tub. Floorplan can easily accommodate your special interests. Living or formal dining could become a wine-tasting room, music room. Now you’ll have the space to showcase your interests and life style.

bridgeMLS, Bay East AOR, or Contra Costa AOR #40764890

Dec 16, 2016

Sold

$577,000

$135/sq ft

Dec 9, 2016

Pending

—

Dec 9, 2016

Contingent

—

Nov 30, 2016

Listed

$549,950

$128/sq ft

Year

Property tax

Land + Additions

Assessment*

2025

$12,563 (+4.6%)

$132,651 + $832,944

$965,595

2024

$12,013 (+31.7%)

$130,050 + $816,612

$946,662

2023

$9,118 (+1.7%)

$127,500 + $800,600

$928,100

2022

$8,968 (+2.4%)

$157,676 + $509,820

$667,496

2021

$8,756 (+0.4%)

$154,585 + $499,824

$654,409

2020

$8,720 (+26.3%)

$151,554 + $490,024

$641,578

2019

$6,902 (−14.2%)

$150,000 + $485,000

$635,000

2018

$8,047 (+2.1%)

$93,636 + $506,674

$600,310

2017

$7,884 (+12.5%)

$90,000 + $487,000

$577,000

2016

$7,008 (+4.8%)

$90,000 + $487,000

$577,000

2015

$6,689 (−4.4%)

$107,654 + $414,346

$522,000

2014

$6,999 (+26.8%)

$109,304 + $420,696

$530,000

2013

$5,519 (+0.1%)

$109,304 + $420,696

$530,000

2012

$5,512 (+8.3%)

$81,772 + $314,728

$396,500

2011

$5,089 (−2.0%)

$81,772 + $314,728

$396,500

2010

$5,194 (+1.3%)

$74,038 + $284,962

$359,000

2009

$5,128 (−24.5%)

$77,855 + $299,645

$377,500

2008

$6,789

$77,855 + $299,645

$377,500

Tax history for 3429 Keystone Loop

Year

Property tax

Land + Additions

Assessment*

2025

$12,563 (+4.6%)

$132,651 + $832,944

$965,595

2024

$12,013 (+31.7%)

$130,050 + $816,612

$946,662

2023

$9,118 (+1.7%)

$127,500 + $800,600

$928,100

2022

$8,968 (+2.4%)

$157,676 + $509,820

$667,496

2021

$8,756 (+0.4%)

$154,585 + $499,824

$654,409

2020

$8,720 (+26.3%)

$151,554 + $490,024

$641,578

2019

$6,902 (−14.2%)

$150,000 + $485,000

$635,000

2018

$8,047 (+2.1%)

$93,636 + $506,674

$600,310

2017

$7,884 (+12.5%)

$90,000 + $487,000

$577,000

2016

$7,008 (+4.8%)

$90,000 + $487,000

$577,000

2015

$6,689 (−4.4%)

$107,654 + $414,346

$522,000

2014

$6,999 (+26.8%)

$109,304 + $420,696

$530,000

2013

$5,519 (+0.1%)

$109,304 + $420,696

$530,000

2012

$5,512 (+8.3%)

$81,772 + $314,728

$396,500

2011

$5,089 (−2.0%)

$81,772 + $314,728

$396,500

2010

$5,194 (+1.3%)

$74,038 + $284,962

$359,000

2009

$5,128 (−24.5%)

$77,855 + $299,645

$377,500

2008

$6,789

$77,855 + $299,645

$377,500

*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

7,200 Sq. Ft.

Year renovated

2010

Sq. Ft.

4,285

Year built

2003

Style

Single Family Residential

County

Contra Costa County

APN

0114210057

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

Oct 10, 2023 • Final

Building/residential/p/pool

Apply pebble plaster to a residential pool and spa. Install pool equipment.

Pool and hot tub

Sep 30, 2021 • Final

Building - residential mechanical

Replace a 5 ton heating and air conditioning system with a similar unit. A HERS report is required at the final inspection.

HVAC

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, Int Access From Garage, Enclosed

Interior

Virtual Tour

Bathroom Information
# of Bathrooms Total: 4
# of Bathrooms Full: 4
Other Bathrooms Included Features: Shower Over Tub, Tile, Double Sinks
Primary Bathroom Included Features: Stall Shower, Double Sinks, Marble, Sitting Area

Interior Features
Interior Features: Bonus/Plus Room, Family Room, Formal Dining Room, Office, Stone Counters, Eat-in Kitchen, Kitchen Island
Appliances: Dishwasher, Disposal, Gas Range, Microwave, Oven
Laundry Features: Laundry Room
Upper Level Features: 4 Bedrooms, 3 Baths, Primary Bedrm Suite - 1
Street Level Features: 2 Bedrooms, Laundry Facility, Main Entry
Window Features: Double Pane Windows, Window Coverings
Fireplaces Total: 2
Has Fireplace
Flooring: Tile, Carpet

Room Information
Kitchen Features: Counter - Stone,Dishwasher,Eat In Kitchen,Garbage Disposal,Gas Range/Cooktop,Island,Microwave,Oven Built-in
Rooms Total: 12
Fireplace Features: Family Room, Gas

Exterior

Building Information
Construction Materials: Stucco
Building Area Total: 4,285
Foundation Details: Slab

Exterior Features
Patio And Porch Features: Patio
Exterior Features: Back Yard, Front Yard
Door Features: Mirrored Closet Door(s)

Pool Information
Pool Features: Community, Solar Pool Owned

Property Information
Living Area: 4285
Living Area Units: Square Feet
Property Type: Residential
Property Sub Type: Single Family Residence
Year Built: 2003

Lot Information
Lot Size Square Feet: 7200
Lot Size Area: 0.17
Lot Size Units: Acres
Lot Size Acres: 0.17
Lot Features: Level, Regular

Utilities

Green Features Information
Green Energy Generation: Solar

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: $230
Association Fee Includes: Common Area Maint, Management Fee, Security/Gate Fee
Association Fee Frequency: Monthly

Public facts

Beds: 4
Baths: 4.0
Sq. Ft.: 4,285
Stories: 2.0
Lot Size: 7,200 square feet
Style: Single Family Residential
Year Built: 2003
Year Renovated: 2010
County: Contra Costa County
APN: 0114210057

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 • 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

$862,000 – $1.04M

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Nearby similar homes

NEW 15 HRS AGO

$850,000

5 beds4 baths3,917 sq ft

3159 Castle Rock Loop, Discovery Bay, CA 94505

OPEN SAT, 1PM TO 4PMVIDEO TOUR

$1,030,000

3 beds2 baths1,788 sq ft

281 Discovery Bay Blvd, Discovery Bay, CA 94505

$894,000

4 beds3 baths2,693 sq ft

7270 Keyesport Way, Discovery Bay, CA 94505

$740,000

4 beds2.5 baths3,030 sq ft

3551 Keystone Loop, Discovery Bay, CA 94505

VIDEO TOUR

$650,000

4 beds3 baths2,116 sq ft

2218 Newport Ct, Discovery Bay, CA 94505

KW Central Valley

$660,000

4 beds2.5 baths2,669 sq ft

3681 Yacht Dr, Discovery Bay, CA 94505

New listings for sale in 94505

NEW 15 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 SOON3D WALKTHROUGH

$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

COMING SOON

$1,100,000

5 beds3 baths2,779 sq ft

124 Tennyson Ct, 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

Home values near 3429 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
3435 Keystone Loop, Discovery Bay, CA 5 Beds \| 4 Baths \| 4011 Sq. Ft.	$846,595

Address	Redfin Estimate
3417 Keystone Loop, Discovery Bay, CA 4 Beds \| 3 Baths \| 2562 Sq. Ft.	$744,732
3441 Keystone Loop, Discovery Bay, CA 4 Beds \| 2 Baths \| 2033 Sq. Ft.	$747,390

Property information provided by bridgeMLS, Bay East AOR, or Contra Costa AOR when last listed in 2023. 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

Redfin agents who toured

Sale history for 3429 Keystone Loop

Tax history for 3429 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 3429 Keystone Loop

More real estate resources