Google street view image for 7 Keystone Ct, Gaithersburg, MD 20878

Off market aug 1989 for $187K

$668,639

Est. refi paymentEst. refi $1,355/mo

—

•

3.5 ba

•

2,308

sq ft

7 Keystone Ct, Gaithersburg, MD 20878

About this home

7 Keystone Ct is a 2,308 square foot house on a 9,391 square foot lot with 3.5 bathrooms. - it last sold on August 31, 1989 for $187,000. Based on Redfin's Gaithersburg data, we estimate the home's value is $668,639.

Single-familyProperty Type

1975Year Built

9,391 sq ftLot Size

$290Est. Price/Sq.Ft.

Source:Public Records

Redfin Estimate

$668,639

$482K since sold in August 1989$8,000 since September

Recently sold homes
Estimate history
Homes for sale

This home's estimate is 16.6% lower than the average sale price ($802K) of 5 comparable homes.

SOLD MAY 22, 2026
$757,500
A
4 beds3.5 baths2,796 sq ft
3 Pavilion Dr, Gaithersburg, MD 20878
SOLD MAY 20, 2026
$730,000
B
4 beds3.5 baths2,636 sq ft
777 Kimberly Ct, Gaithersburg, MD 20878
SOLD JUN 23, 2026
$918,530
C
4 beds3.5 baths2,284 sq ft
12213 Galesville Dr, Gaithersburg, MD 20878
SOLD JUL 14, 2026
$773,580
D
4 beds3 baths2,156 sq ft
852 Diamond Dr, Gaithersburg, MD 20878
BOUGHT WITH REDFIN SEP 14, 2026
$830,000
E
4 beds3.5 baths2,734 sq ft
106 Cherrywood Ter, Gaithersburg, MD 20878

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Earn from this home

Sell

$628,174

Est. take-home

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Refinance

Est. cash available

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Market trends in 20878, MD

Last updated September 2026

Buyer's Market

Seller's Market

Seller's market

Sale-to-List Price

99.6%

0.3% MoM

Median sale price

$795K

$344 MoM

Avg. days on market

39d

5 days MoM

Recently sold homes

192

17 MoM

New listings for sale

COMING SOON
$985,000
4 beds3.5 baths2,758 sq ft
12522 Hialeah Way, North Potomac, MD 20878
(240) 219-2422
NEW 32 HRS AGO
$684,999
3 beds2.5 baths2,400 sq ft
419 Parkview Ave, Gaithersburg, MD 20866
(202) 537-3800
NEW 35 HRS AGO
$399,000
2 beds2.5 baths1,420 sq ft
7 Booth St #110, Gaithersburg, MD 20878
(301) 615-3000
COMING SOON
$874,900
3 beds3 baths3,100 sq ft
542 Market St E, Gaithersburg, MD 20878
(301) 615-3000
$1,599,900
5 beds4.5 baths4,651 sq ft
132 Treehaven St, Gaithersburg, MD 20878
(301) 602-3904
$565,000
3 beds2.5 baths1,928 sq ft
5 Lazy Hollow Way, Gaithersburg, MD 20878
(240) 683-0985
COMING SOON
$899,000
4 beds2.5 baths3,058 sq ft
12321 Triple Crown Rd, North Potomac, MD 20878
(703) 518-8300
$1,069,000
4 beds3.5 baths2,852 sq ft
11568 Paramus Dr, North Potomac, MD 20878
(301) 340-8700
COMING SOON
$532,900
3 beds2 baths1,702 sq ft
104 Bucksfield Rd #104, Gaithersburg, MD 20878
(301) 602-3904
$724,999
4 beds3 baths2,076 sq ft
12205 Horse Center Rd, North Potomac, MD 20878
(202) 944-5000
See all

Provided by Redfin

Sale history for 7 Keystone Ct

Year

Property tax

Land + Additions

Assessment*

2025

$5,863 (+7.5%)

$216,100 + $287,200

$503,300

2024

$5,455 (+115.4%)

2023

$2,533 (−48.1%)

2022

$4,883 (+0.5%)

$216,100 + $206,000

$422,100

2021

$4,860 (+103.0%)

2020

$2,394 (−48.1%)

2019

$4,611 (+3.5%)

$216,100 + $195,200

$411,300

2018

$4,457 (+2.4%)

2017

$4,351 (+4.4%)

$216,100 + $157,300

$373,400

2015

$4,166 (−1.5%)

$192,400 + $170,700

$363,100

2014

$4,230 (+1.2%)

2013

$4,179 (−7.6%)

2012

$4,521 (+4.4%)

2011

$4,331

2010

$4,331 (+21.1%)

2009

$3,577

Tax history for 7 Keystone Ct

Year

Property tax

Land + Additions

Assessment*

2025

$5,863 (+7.5%)

$216,100 + $287,200

$503,300

2024

$5,455 (+115.4%)

2023

$2,533 (−48.1%)

2022

$4,883 (+0.5%)

$216,100 + $206,000

$422,100

2021

$4,860 (+103.0%)

2020

$2,394 (−48.1%)

2019

$4,611 (+3.5%)

$216,100 + $195,200

$411,300

2018

$4,457 (+2.4%)

2017

$4,351 (+4.4%)

$216,100 + $157,300

$373,400

2015

$4,166 (−1.5%)

$192,400 + $170,700

$363,100

2014

$4,230 (+1.2%)

2013

$4,179 (−7.6%)

2012

$4,521 (+4.4%)

2011

$4,331

2010

$4,331 (+21.1%)

2009

$3,577

*Taxable value of land and structures on it ("additions") is determined regularly by local assessors and does not affect market price.

Zoning and permits

Zoning
Permits

R-90

Medium Density Residential District

The R-90 Zone is intended to provide for medium-density residential areas primarily with single-family detached homes.

Permitted uses

Include but are not limited to:

Religious facility
Day care facility
Housing-Single unit
Housing-Other
Public service

Jan 30, 2012 • Final

Permits plus archive - mechanical

Replace an oil furnace in a residential building. Replacement of gas appliances requires approval from the Washington Suburban Sanitary Commission prior to the final mechanical inspection.

Gas

HVAC

Jul 28, 2010 • Final

Permits plus archive - electrical

Electrical

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

Interior

Basement Information
Basement Sq. Ft: 400
Basement Finish: Finished
Basement Type: Finished

Bathroom Information
# of Full Baths: 3
# of 1/2 Baths: 1

Heating & Cooling
Air Conditioning Type: Split System
Heating Type: Hot Air

Fireplace Information
# of Fireplaces: 1
Fireplace Type: 2 Story Brick
Has Fireplace

Exterior

Exterior Information
Building Construction Quality: Average
Exterior Wall: Frame
Building Type: Single Family

Property Information
Subdivision Name: WEST RIDING 2
Living Sq. Ft: 2,308
Building Sq. Ft: 2,308
# of Stories: 2
Stories Type: 2 Story With Basement
Legal Description: WEST RIDING

Parking & Garage Information
Parking Type: Carport
Garage/Parking Sq. Ft: 264
Garage / Carport Type: Carport

Lot Information
# of Buildings: 1
Land Sq. Ft: 9,391
Legal Lot Number: 54
Legal Block Number: C
Municipality Name: GAITHERSBURG
Acres: 0.2156
Zoning Code: R90
County Use Description: SINGLE FAMILY DETACH
State Use Description: RESIDENTIAL

Utility Information
Sewer Type: Public

Financial

Assessor Information
Assessment Year: 2026
Tax District County: 09

Public facts

Beds: —
Baths: 3.5
Sq. Ft.: 2,308
Stories: 2.0
Lot Size: 9,391 square feet
Style: Single Family Residential
Year Built: 1975
Year Renovated: —
County: Montgomery County
APN: 09 01521495

Home facts updated by county records on Jul 17, 2026

Around this home

Schools

Diamond Elementary School

Public PreK-5 • Assigned • 0.3mi

9/10

Lakelands Park Middle School

Public 6-8 • Assigned • 1.4mi

6/10

Northwest High School

Public 9-12 • Assigned • 2.1mi

8/10

Provided by GreatSchools

Lifestyle

Provided by Walk Score and Local Logic

Local insights from Redfin agents

Gaithersburg, MD, is known for its diverse community, historic landmarks like the Gaithersburg Community Museum, and modern developments like the Kentlands. It combines a rich heritage with thriving shopping, dining, and recreational options, making...
2 months ago • Gaithersburg
Bryan Kerrigan
Redfin Premier agent
740 deals
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Climate risks

1/10 Flood Factor

Minimal risk of a flood reaching the building in the next 30 years

1/10 Fire Factor

Unlikely to be in a wildfire in next 30 years

6/10 Heat Factor

7 days above 102° expected this year, 16 days in 30 years

4/10 Wind Factor

11% chance of strong winds in next 30 years

3/10 Air Factor

2 unhealthy days expected this year, 3 days in 30 years

Provided by First Street

Historical weather

Gaithersburg, MD • 20878

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 9.3 hours in June and 4.1 hours in December, placing it below the U.S. average for solar exposure.

9.3 hrs

4.1 hrs

JuneDecember

Provided by Shadowmap

Estimated sale price

$636,000 – $769,000

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New listings for sale in 20878

COMING SOON

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4 beds3.5 baths2,758 sq ft

12522 Hialeah Way, North Potomac, MD 20878

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NEW 32 HRS AGO

$684,999

3 beds2.5 baths2,400 sq ft

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(202) 537-3800

NEW 35 HRS AGO

$399,000

2 beds2.5 baths1,420 sq ft

7 Booth St #110, Gaithersburg, MD 20878

(301) 615-3000

COMING SOON

$874,900

3 beds3 baths3,100 sq ft

542 Market St E, Gaithersburg, MD 20878

(301) 615-3000

$1,599,900

5 beds4.5 baths4,651 sq ft

132 Treehaven St, Gaithersburg, MD 20878

(301) 602-3904

$565,000

3 beds2.5 baths1,928 sq ft

5 Lazy Hollow Way, Gaithersburg, MD 20878

(240) 683-0985

COMING SOON

$899,000

4 beds2.5 baths3,058 sq ft

12321 Triple Crown Rd, North Potomac, MD 20878

(703) 518-8300

$1,069,000

4 beds3.5 baths2,852 sq ft

11568 Paramus Dr, North Potomac, MD 20878

(301) 340-8700

COMING SOON

$532,900

3 beds2 baths1,702 sq ft

104 Bucksfield Rd #104, Gaithersburg, MD 20878

(301) 602-3904

Home values near 7 Keystone Ct

Data from public records.

Address	Redfin Estimate
14 Keystone Drive, Gaithersburg, MD - Beds \| 3.5 Baths \| 2308 Sq. Ft.	$645,937
1 Keystone Drive, Gaithersburg, MD 5 Beds \| 3 Baths \| 2756 Sq. Ft.	$736,912

Address	Redfin Estimate
12 Keystone Drive, Gaithersburg, MD 4 Beds \| 3.5 Baths \| 3126 Sq. Ft.	$748,185
3 Keystone Court, Gaithersburg, MD - Beds \| 3 Baths \| 2156 Sq. Ft.	$647,592

Address	Redfin Estimate
10 Keystone Drive, Gaithersburg, MD 5 Beds \| 3.5 Baths \| 3316 Sq. Ft.	$756,426
5 Keystone Court, Gaithersburg, MD 4 Beds \| 3.5 Baths \| 1908 Sq. Ft.	$703,555

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