3521 Keystone Loop, Discovery Bay, CA 94505
Property image
Property image
OFF MARKET

$848,400

Trulia Estimate
  • 5 Beds
  • 4 Baths
  • 4,088 sqft

3521 Keystone Loop, Discovery Bay, CA 94505

Est. Refi. Payment $5,254/mo*
Refinance Your Home
Currently Off Market - Sold Apr 29, 2022 for $90,000

Home Value

Trulia Estimate
$848K
Since last month
Increased$3K (+0.4%)
Since last year
Decreased$29K (-3.3%)
Since last sale
Increased$758K (+842.7%)
Learn more about this home's value by checking out its Trulia Estimate, the value of nearby homes, and how much similar homes have sold for.

Trulia Estimate

The of this home's value increased by +54% in the last 10 years
MonthEstimated value
2026
August 2026$848K
August 2026$847K
July 2026$845K
June 2026$857K
May 2026$872K
April 2026$883K
March 2026$873K
February 2026$877K
January 2026$853K
2025
2024
2023
2022
2021
2020
2019
2018
2017
2016

Comparable sales

These are recently sold homes that have a similar location or other similar features to this home, like bedrooms, bathrooms, and square footage. Get a sense of the expected prices in the area by viewing these homes.
Address
Distance
Property Type
Sold Price
Sold Date
Bed
Bath
Sqft
3638 Otter Brook Loop, Discovery Bay, CA
0.05
Single-Family Home
$200,500
08/25/26
4
3
3,272
3416 Keystone Loop, Discovery Bay, CA
0.06
Single-Family Home
$683,494
07/01/26
5
4
4,109
3432 Keystone Loop, Discovery Bay, CA
0.05
Single-Family Home
$818,000
04/14/26
5
4
4,011
3438 Keystone Loop, Discovery Bay, CA
0.05
Single-Family Home
$849,900
07/20/26
6
4
4,088
3645 Otter Brook Loop, Discovery Bay, CA
0.02
Single-Family Home
$750,000
11/20/25
5
3
3,536
3627 Otter Brook Loop, Discovery Bay, CA
0.05
Single-Family Home
$827,000
12/23/25
5
3
3,435
3507 Keystone Loop, Discovery Bay, CA
0.02
Single-Family Home
$725,000
10/24/25
4
3
3,030
531 Half Moon Ct, Discovery Bay, CA
0.17
Single-Family Home
$858,000
01/29/26
5
4
4,011
716 Seminole Ct, Discovery Bay, CA
0.11
Single-Family Home
$750,000
04/30/26
4
3
3,517
414 Superior Way, Discovery Bay, CA
0.33
Single-Family Home
$283,500
07/07/26
4
3
3,272

Nearby home prices

Get a sense of expected prices in the area by checking the value of nearby homes.
Address
Distance
Price
Bed
Bath
Sqft
Status
3657 Otter Brook Loop, Discovery Bay, CA 94505
0.02
$799,000
6
4
3,953
For Sale
3656 Otter Brook Loop, Discovery Bay, CA 94505
0.04
$899,200
6
3
3,536
Off Market
3645 Otter Brook Loop, Discovery Bay, CA 94505
0.02
$750,000
5
3
3,536
Recently Sold
3515 Keystone Loop, Discovery Bay, CA 94505
0.01
$792,600
4
4
3,518
Off Market
3507 Keystone Loop, Discovery Bay, CA 94505
0.02
$723,200
4
2
3,030
Off Market
3638 Otter Brook Loop, Discovery Bay, CA 94505
0.05
$200,500
4
3
3,272
Recently Sold
3627 Otter Brook Loop, Discovery Bay, CA 94505
0.05
$827,000
5
3
3,435
Recently Sold
703 Seminole Ct, Discovery Bay, CA 94505
0.09
$883,900
5
3
3,517
Off Market
709 Seminole Ct, Discovery Bay, CA 94505
0.10
$992,000
5
4
4,011
Off Market
801 Blue Mesa Ct, Discovery Bay, CA 94505
0.11
$774,800
4
3
2,562
Off Market
3460 Keystone Loop, Discovery Bay, CA 94505
0.06
$750,200
4
3
2,562
Off Market
3438 Keystone Loop, Discovery Bay, CA 94505
0.05
$849,900
6
4
4,088
Recently Sold

Local Information

  • Map ViewExplore the area around 3521 Keystone Loop.
  • Schools1 Elementary School1 Middle School1 High School
  • Shop & Eat
-- mins to
Commute Destination

Home Highlights

Single-Family Home
Built in 2003
4,088 sqft
$208/sqft
Garage

About this House

Luxurious House in a Gated Community
 5 Bedrooms plus an Activity room, 4 Baths, 3 Car garage
 one bedroom and a Bathroom downstairs
highly desired Lakeshore Community
20 minutes' drive to Livermore
Cozy family room with fireplace
Beautiful landscaped yard with Build-in BBQ Grill
 Huge Master suit with fireplace
 Easy access to a lovely lake in the community with fountain and walking
trail.
 Community Pool and walk to school
 1 year lease minimum, Available Now
 Pets Upon Approval
 Open house on September 25th, Sunday, 12-1pm
 Email or Text
3521 Keystone Loop, Discovery Bay, CA 94505 is a 5 bedroom, 4 bathroom, 4,088 sqft single-family home built in 2003. It last sold for $90,000 on Apr 29, 2022. More recently, it was listed as a rental in September 2022 with an asking price of $3,800 per month. That rental listing was removed on September 30, 2022. This property is not currently displayed as for sale or rent on Trulia. The Trulia Estimate is $848,400, with a rent estimate of $4,471/month.

Home Details for 3521 Keystone Loop

Interior Features

Heating & Cooling
Heating: Forced Air, GasAir ConditioningHeating Fuel: Forced Air
Interior Details
Number of Rooms: 11Types of Rooms: Dining Room, Family Room
Appliances & Utilities
DishwasherDryerWasher
Levels, Entrance, & Accessibility
Floors: Hardwood

Exterior Features

Exterior Home Features
Roof: TileExterior: Stucco
Pool
Pool
Parking & Garage
GarageParking Spaces: 3Parking: Garage Detached

Property Information

Year Built
Year Built: 2003Year Updated: 2004
Property Type / Style
Property Type: Single Family Home

Community

Units in Building: 1

Lot Information

Lot Area: 6499 sqft

Price and Tax history

DateEventPrice
Sep 30, 2022
Source: Zillow Rental Manager
ListingRemoved
Sep 16, 2022
Source: Zillow Rental Manager
Listed For Rent
$3,800
Apr 29, 2022
Source: N/A
Sold
$90,000
Mar 19, 2022
Source: SFAR #422640414
Listed For Sale
$896,000
Aug 6, 2020
Source: CCAR #40909966
Sold
$700,000

Market trends in Discovery Bay

Last updated July 2026
Buyer'sMarketSeller'sMarket
Avg. sale price
—
Sale-to-List Price
—
Price per sq ft
—
Available listings
109
10MoM

Around this home

What Locals Say about Discovery Bay

At least 100 Trulia users voted on each feature.

  • 94 % Say it's dog friendly

  • 90 % Say there are sidewalks

  • 90 % Say car is needed

  • 90 % Say yards are well-kept

  • 86 % Say people would walk alone at night

  • 85 % Say parking is easy

  • 82 % Say there's holiday spirit

  • 76 % Say kids play outside

  • 75 % Say it's quiet

  • 74 % Say streets are well-lit

  • 64 % Say neighbors are friendly

  • 54 % Say there are community events

  • 50 % Say they plan to stay for at least 5 years

  • 47 % Say there's wildlife

  • 35 % Say it's walkable to restaurants

  • 26 % Say it's walkable to grocery stores

Sourced by Trulia users. Learn more about our methodology.
  • Andy E.
    "Discovery Bay is a beautiful bedroom community! It is on the Delta so all things water, boating, skiing, fishing, wildlife viewing are here! Safe community with great schools and great farmers markets nearby! Nearby Brentwood is great community with most everything you could need!"
    4
    Flag
  • Laurie Y.
    "This neighborhood is truly like no other. It’s on the Sacramento delta and the river is in your back yard. I live in a neighborhood where all my neighbors are friendly and keep an eye out for anything peculiar going on without being nosey. A great street to live on. "
    1
    Flag
  • Sierra K.
    "There are parks close by, people are friendly, clean community, and safe to walk in day time and at night"
    1
    Flag
  • Joanna J.
    "The things I like about our community are the holiday Boat parades, trails, nicely maintained parks that are safe for children."
    0
    Flag
  • Dlarry
    "The people here are pleasant and lookout for each other. Parks are great equip with doggie bags. The holidays are festive, most of the neighbors decorate their home during Christmas and Halloween."
    1
    Flag
  • James
    "Great place to raise a family, always having great times with the neighbors, everyone is friendly and helpful. "
    0
    Flag
  • D
    "Winery concerts and annual Christmas lights parade on the water. The boat owners are residents and volunteer to decorate their boats for the event. We have the seasonal cherry picking as well other fruits. "
    0
    Flag
  • D
    "We have an annual Christmas light show on the water. Neighbors are really friendly. The parks are dog friendly."
    0
    Flag
  • Dlarry
    "The parks are dog friendly and provide doggy bag through out the parks. People tend to ignore the speed limits and roll stop signs so be careful when crossing the street with your pet."
    0
    Flag
  • Laurie Y.
    " This town is big on community events....car shows, free concerts, boat parades, boat races, setting world records by tying together anything that floats with people on it ( we are in the record books as the largest human float) Christmas parade and open house.....altogether a very neighborly place to live."
    0
    Flag
  • JG
    "Friendly neighbors, black parties, bbqing, clean town, plenty of water sports, and great local eateries. "
    0
    Flag
  • Jlindemann23
    "It’s quiet but isolated. Neighbors can be nosey but mostly keep to themselves. Definitely need a car out here"
    0
    Flag
  • Ajmahlberg
    "There is no public transportation that I know of. Dial-a-Ride is available. Shuttle drivers also for airport destinations. "
    0
    Flag
  • XandraF.
    "I just recently moved here with family. it's Christmas time so I noticed that a lot of the neighborhood get together and decorate the streets for the holidays "
    0
    Flag
  • Skyler R.
    "There are lots of dogs walking with their owners, and there are 2 new(ish) dog parks at the community center! "
    0
    Flag
  • Samantha R.
    "Not to sure only live here for 2 years, we rent the house and I don’t really go out during the day time, as it is too hot. We go out in the evening, to walk he cat as the floor during the day is to hot."
    0
    Flag
  • Cali G.
    "I've lived here for 8 yrs now as a tenant. The community here at the Lakes are not very open not do they like renters! "
    0
    Flag
  • Barbara W.
    "I am a resident of Discovery Bay. As a whole, this little town is pretty safe. Very pet friendly. Great elementary schools and churches. Most within walking distance. Caution is required when crossing in the crosswalks at Discovery Bay Blvd. and Riverlake Rd's. as there has been a few minor hit and runs. Discovery Bay is a friendly community and a great place to raise your children."
    2
    Flag
  • John M.
    "You can't beat the discovery Bay Country Club living, it is a gated community and all of the homes are manicured with beautiful Golf Course views all through the community, it is a vary relaxed place to live and vary quite."
    0
    Flag
  • Discophil
    "Small town with Excelent Sushi Grill, Starbucks, Recreational Boat harbor w/ restaurant"
    0
    Flag

LGBTQ Local Legal Protections

Frequently asked questions about 3521 Keystone Loop

  • What is 3521 Keystone Loop estimated to be worth?
    Trulia's estimated value for 3521 Keystone Loop in Discovery Bay, CA is $848,400.
  • What is the price history for 3521 Keystone Loop?
    3521 Keystone Loop in Discovery Bay, CA last sold for $90,000 in April 2022.
  • Is Discovery Bay a buyer's or seller's market?
    Discovery Bay is currently a buyer's market, based on recent for-sale activity.
  • What do residents say about Discovery Bay?
    Residents describe Discovery Bay, CA as dog-friendly, pedestrian-friendly, and well-kept. See recently sold homes in Discovery Bay, CA.
  • Does 3521 Keystone Loop have a pool?
    Yes, 3521 Keystone Loop in Discovery Bay, CA has a pool.
  • Does 3521 Keystone Loop have laundry facilities?
    Yes, 3521 Keystone Loop in Discovery Bay, CA has in-unit laundry.

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