OFF MARKET

Off Market May 2020 for $609K

$846,595

Est. refi paymentEst. refi $3,936/mo

•

4,011

sq ft

3435 Keystone Loop, Discovery Bay, CA 94505

About this home

PRICED TO SELL!!!!!!!!!!!ONE OWNER..JUST FINISHED REHAB WITH NEW FLOORING AND NEW INTERIOR PAINT....DESIRED LOCATION AND DESIRED FLOOR PLAN.. SEVERAL OPTION ROOMS INCLUDING OFFICE SPACE AND LOFT...WONDERFUL MASTER SUITE WITH EXTRA LARGE LUXURIOUS BATH AND CLOSET! FULL BEDROOM SUITE DOWNSTAIRS AS WELL AS OFFICE SPACE.. LOW MAINTENANCE PRIVATE YARD....VACANT...GO GO GO...SPECIAL SHOWING DISCLAIMER FORM ON SITE FOR SHOWINGS DURING THIS SPECIAL TIME..SANITIZERS AND MASKS ON SITE

Single-familyProperty Type

2003Year Built

7,300 sq ftLot Size

$211Est. Price/Sq.Ft.

2 car garageParking

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

Bought with Kasie Posey •DRE #01931662 • Elation Real Estate

Redfin checked: a minute ago

•Source:bridgeMLS, Bay East AOR, or Contra Costa AOR #40901349

Redfin Estimate

$846,595

$238K since sold in May 2020$3,000 since August

Recently sold homes
Estimate history
Homes for sale

This home's estimate is 4.4% higher than the average sale price ($811K) of 6 comparable homes.

SOLD BY REDFIN APR 14, 2026
$818,000
A
5 beds4 baths4,011 sq ft
3432 Keystone Loop, Discovery Bay, CA 94505
SOLD JUL 20, 2026
$849,900
B
6 beds4 baths4,088 sq ft
3438 Keystone Loop, Discovery Bay, CA 94505
SOLD APR 21, 2026
$879,000
C
5 beds3 baths3,139 sq ft
5647 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 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

$376,741

Est. take-home

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Refinance

Est. cash available

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Rent

$4,041/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

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

NEW 20 HRS AGO
$682,500
4 beds2 baths1,760 sq ft
2419 Imperial Ct, Discovery Bay, CA 94505
NEW 25 HRS AGO
$689,000
4 beds3 baths2,698 sq ft
2652 Crescent Way, Discovery Bay, CA 94505
LISTED BY REDFIN
$849,000
4 beds3 baths2,455 sq ft
1280 Saint Andrews Dr, Discovery Bay, CA 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
$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
See all

Provided by Redfin

Sale history for 3435 Keystone Loop

Date

Event

Price

RENT. #1

Jun 29, 2024

Rental Removed

$4,200

$1/sq ft

Jun 29, 2024

Listed for Rent

$4,200

$1/sq ft

Jun 28, 2022

Price Changed

$3,900

$1/sq ft

RENT. #2

Jul 2, 2022

Price Changed

$3,900

$1/sq ft

bridgeMLS, Bay East AOR, or Contra Costa AOR #40901349

May 4, 2020

Sold

$609,000

$152/sq ft

Apr 23, 2020

Pending

—

Apr 10, 2020

Listed

$609,000

$152/sq ft

bridgeMLS, Bay East AOR, or Contra Costa AOR #40800728

Jan 26, 2018

Listing Removed

—

Dec 7, 2017

Price Changed

Oct 15, 2017

Listed

Year

Property tax

Land + Additions

Assessment*

2025

$9,486 (+5.0%)

$100,394 + $578,952

$679,346

2024

$9,036 (+1.6%)

$98,426 + $567,600

$666,026

2023

$8,897 (+1.7%)

$96,497 + $556,471

$652,968

2022

$8,752 (+2.4%)

$94,605 + $545,560

$640,165

2021

$8,547 (+0.2%)

$92,750 + $534,863

$627,613

2020

$8,527 (+1.2%)

$90,932 + $524,376

$615,308

2019

$8,424 (+6.8%)

$162,500 + $454,881

$617,381

2018

$7,889 (+4.2%)

$159,314 + $445,962

$605,276

2017

$7,572 (+6.7%)

$144,371 + $404,129

$548,500

2016

$7,094 (+14.3%)

$144,371 + $404,129

$548,500

2015

$6,206 (−8.4%)

$139,501 + $390,499

$530,000

2014

$6,776 (+26.5%)

$134,106 + $375,394

$509,500

2013

$5,355 (+0.1%)

$134,106 + $375,394

$509,500

2012

$5,348 (+12.2%)

$100,415 + $281,085

$381,500

2011

$4,765 (−4.9%)

$100,415 + $281,085

$381,500

2010

$5,013 (+1.3%)

$86,729 + $242,771

$329,500

2009

$4,947 (−24.8%)

$95,020 + $265,980

$361,000

2008

$6,579

$95,020 + $265,980

$361,000

Tax history for 3435 Keystone Loop

Year

Property tax

Land + Additions

Assessment*

2025

$9,486 (+5.0%)

$100,394 + $578,952

$679,346

2024

$9,036 (+1.6%)

$98,426 + $567,600

$666,026

2023

$8,897 (+1.7%)

$96,497 + $556,471

$652,968

2022

$8,752 (+2.4%)

$94,605 + $545,560

$640,165

2021

$8,547 (+0.2%)

$92,750 + $534,863

$627,613

2020

$8,527 (+1.2%)

$90,932 + $524,376

$615,308

2019

$8,424 (+6.8%)

$162,500 + $454,881

$617,381

2018

$7,889 (+4.2%)

$159,314 + $445,962

$605,276

2017

$7,572 (+6.7%)

$144,371 + $404,129

$548,500

2016

$7,094 (+14.3%)

$144,371 + $404,129

$548,500

2015

$6,206 (−8.4%)

$139,501 + $390,499

$530,000

2014

$6,776 (+26.5%)

$134,106 + $375,394

$509,500

2013

$5,355 (+0.1%)

$134,106 + $375,394

$509,500

2012

$5,348 (+12.2%)

$100,415 + $281,085

$381,500

2011

$4,765 (−4.9%)

$100,415 + $281,085

$381,500

2010

$5,013 (+1.3%)

$86,729 + $242,771

$329,500

2009

$4,947 (−24.8%)

$95,020 + $265,980

$361,000

2008

$6,579

$95,020 + $265,980

$361,000

*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

7,300 Sq. Ft.

Year renovated

2003

Sq. Ft.

4,011

Year built

2003

Style

Single Family Residential

County

Contra Costa County

APN

0114210065

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

Aug 22, 2023 • Final

Building - residential mechanical

Upgrade the furnace, evaporator coil, thermal expansion valve, and air conditioning unit. A HERS report may be required at the final inspection.

HVAC

Jan 10, 2020 • Final

Building - residential mechanical

Replace the furnace in the attic of a residential building.

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

Interior

Bathroom Information
# of Bathrooms Total: 4
# of Bathrooms Full: 4
Other Bathrooms Included Features: Shower Over Tub
Primary Bathroom Included Features: Solid Surface, Stall Shower, Tub

Interior Features
Interior Features: Family Room, Formal Dining Room, Office, Kitchen Island
Appliances: Dishwasher, Double Oven, Disposal, Gas Range, Gas Water Heater
Laundry Features: Laundry Room
Upper Level Features: 4 Bedrooms, 3 Baths, Loft
Street Level Features: 2 Bedrooms, 1 Bath
Fireplaces Total: 1
Has Fireplace
Flooring: Laminate, Carpet

Room Information
Kitchen Features: Dishwasher,Double Oven,Garbage Disposal,Gas Range/Cooktop,Island
Rooms Total: 12
Fireplace Features: Family Room

Exterior

Building Information
Building Area Total: 4,011
Foundation Details: Slab

Exterior Features
Fencing: Fenced

Pool Information
Pool Features: Community

Property Information
Living Area: 4011
Living Area Units: Square Feet
Property Type: Residential
Property Sub Type: Single Family Residence
Year Built: 2003

Lot Information
Lot Size Square Feet: 7300
Lot Size Area: 0.17
Lot Size Units: Acres
Lot Size Acres: 0.17
Lot Features: Level

Utilities

Utility Information
Water Source: Public
Sewer: Public Sewer

Heating & Cooling
Has Heating
Heating: Zoned
Cooling: Central Air

Location

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

Public facts

Beds: 5
Baths: 4.0
Sq. Ft.: 4,011
Stories: 2.0
Lot Size: 7,300 square feet
Style: Single Family Residential
Year Built: 2003
Year Renovated: 2003
County: Contra Costa County
APN: 0114210065

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

$805,000 – $974,000

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Nearby similar homes

NEW 20 HRS AGO

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NEW CONSTRUCTION

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New listings for sale in 94505

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NEW 25 HRS AGO

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LISTED BY REDFIN3D WALKTHROUGH

$849,000

4 beds3 baths2,455 sq ft

1280 Saint Andrews Dr, Discovery Bay, CA 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

$799,000

4 beds3 baths2,762 sq ft

2353 Wayfarer Dr, Discovery Bay, CA 94505

Home values near 3435 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
3441 Keystone Loop, Discovery Bay, CA 4 Beds \| 2 Baths \| 2033 Sq. Ft.	$747,390

Address	Redfin Estimate
3423 Keystone Loop, Discovery Bay, CA 5 Beds \| 4 Baths \| 3517 Sq. Ft.	$816,938
3447 Keystone Loop, Discovery Bay, CA 4 Beds \| 3 Baths \| 2562 Sq. Ft.	$671,515

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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 3435 Keystone Loop

Tax history for 3435 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 3435 Keystone Loop

More real estate resources