OFF MARKET

Off market may 2020 for $494K

$707,502

Est. refi paymentEst. refi $3,881/mo

•

2,608

sq ft

16 Keystone Dr, Gaithersburg, MD 20878

About this home

Sun-filled home with attached carport. Refinished hardwood floors throughout. Renovated kitchen with stainless steel appliances, custom backsplash, tile flooring & quartz counters. Renovated bathrooms & spacious bedrooms. Multiple ceiling fans. Additional rec room. Large walk out basement with tile floors, open family room, fireplace & 3rd full bath. Storage room with newer washer/dryer. Well landscaped. Flat back yard with deck & shed. 1/5 acre lot. HVAC & hot water heater 5 years old. No HOA! High rated school district. Located off Great Seneca Highway. Easy access to Quince Orchard Rd & Clopper Rd. Only a few blocks from Diamond Elementary School. 2 miles to Lakelands Park Middle School. 3 miles to Northwest High School. 1/2 mile to bus stop #74. 1 mile to Kentlands. Less than 2 miles to Seneca Creek State Park. 6 minute drive to 270.

Single-familyProperty Type

1974Year Built

9,117 sq ftLot Size

$271Est. Price/Sq.Ft.

1 spaceParking

Listed by Marlon Deausen • Deausen Realty

•301-299-4074 (broker)

Bought with Luis Navarro • RE/MAX Realty Centre, Inc.

•301-774-5900 (broker)

Bought with Mario Padilla • RE/MAX Realty Centre, Inc.

•301-774-5900 (broker)

Redfin checked: 2 minutes ago

•Source:BRIGHT MLS #MDMC698216

Redfin Estimate

$707,502

$214K since sold in May 2020$14K since October

Recently sold homes
Estimate history
Homes for sale

This home's estimate is 11.8% 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
BOUGHT WITH REDFIN SEP 14, 2026
$830,000
C
4 beds3.5 baths2,734 sq ft
106 Cherrywood Ter, Gaithersburg, MD 20878
SOLD JUN 23, 2026
$918,530
D
4 beds3.5 baths2,284 sq ft
12213 Galesville Dr, Gaithersburg, MD 20878
SOLD JUL 14, 2026
$773,580
E
4 beds3 baths2,156 sq ft
852 Diamond Dr, Gaithersburg, MD 20878

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Sell

$320,807

Est. take-home

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Refinance

Est. cash available

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Rent

$3,677/mo

Redfin rental estimate

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Market trends in 20878, MD

Last updated October 2026

Buyer's Market

Seller's Market

Seller's market

Sale-to-list price

99.5%

0.1% MoM

Median sale price

$820K

$23K MoM

Avg. days on market

43d

3 days MoM

Recently sold homes

154

35 MoM

New listings for sale

COMING SOON
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OPEN TODAY, 2PM TO 4PM
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1 bed1 bath964 sq ft
16 Granite Pl #482, Gaithersburg, MD 20878
(301) 718-0010
COMING SOON
3 Arch Pl #428, Gaithersburg, MD 20878
$349,000
1 bed1 bath1,003 sq ft
3 Arch Pl #428, Gaithersburg, MD 20878
(703) 214-5100
$775,000
5 beds3.5 baths3,150 sq ft
132 Liriope Pl, Gaithersburg, MD 20878
(301) 774-5900
OPEN TODAY, 1PM TO 3PM
$900,000
4 beds3.5 baths2,784 sq ft
15209 Jones Ln, Gaithersburg, MD 20878
(301) 299-6000
$539,900
3 beds2.5 baths1,960 sq ft
805 Suffield Dr, Gaithersburg, MD 20878
(301) 788-2549
OPEN TODAY, 1PM TO 3PM
$529,900
2 beds2.5 baths1,795 sq ft
652-A Main St, Gaithersburg, MD 20878
(240) 497-1700
COMING SOON
$819,000
3 beds2.5 baths2,160 sq ft
1334 Main Mews, Gaithersburg, MD 20878
(301) 615-3000
OPEN TODAY, 2PM TO 4PM
$1,250,000
4 beds5.5 baths4,740 sq ft
12910 Esworthy Rd, North Potomac, MD 20878
(301) 652-0643
OPEN TODAY, 12PM TO 4PM
$639,000
4 beds3.5 baths2,368 sq ft
12353 Sweetbough Ct, North Potomac, MD 20878
(240) 219-2422
See all

Provided by Redfin

Sale history for 16 Keystone Dr

Year

Property tax

Land + Additions

Assessment*

2026

$7,656 (+16.6%)

$214,700 + $348,500

$563,200

2025

$6,565 (+8.0%)

$214,700 + $348,500

$563,200

2024

$6,080 (+8.4%)

2023

$5,611 (+5.9%)

2022

$5,299 (+2.7%)

$214,700 + $249,500

$464,200

2021

$5,161 (+100.0%)

2020

$2,581 (−46.1%)

2019

$4,784 (−9.9%)

$214,700 + $211,300

$426,000

2018

$5,309 (+2.3%)

2017

$5,191 (+3.4%)

$214,700 + $170,200

$384,900

2015

$5,021 (−1.3%)

$191,000 + $184,800

$375,800

2014

$5,088 (+1.1%)

2013

$5,034 (+7.2%)

2012

$4,696 (+4.3%)

2011

$4,500

2010

$4,500 (+7.6%)

2009

$4,181

Tax history for 16 Keystone Dr

Year

Property tax

Land + Additions

Assessment*

2026

$7,656 (+16.6%)

$214,700 + $348,500

$563,200

2025

$6,565 (+8.0%)

$214,700 + $348,500

$563,200

2024

$6,080 (+8.4%)

2023

$5,611 (+5.9%)

2022

$5,299 (+2.7%)

$214,700 + $249,500

$464,200

2021

$5,161 (+100.0%)

2020

$2,581 (−46.1%)

2019

$4,784 (−9.9%)

$214,700 + $211,300

$426,000

2018

$5,309 (+2.3%)

2017

$5,191 (+3.4%)

$214,700 + $170,200

$384,900

2015

$5,021 (−1.3%)

$191,000 + $184,800

$375,800

2014

$5,088 (+1.1%)

2013

$5,034 (+7.2%)

2012

$4,696 (+4.3%)

2011

$4,500

2010

$4,500 (+7.6%)

2009

$4,181

*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

3.5

Stories

Lot width

—

Lot depth

—

Lot size

9,117 Sq. Ft.

Year renovated

—

Sq. Ft.

2,608

Year built

1974

Style

Single Family Residential

County

Montgomery County

APN

09 01521427

Parking Spaces

—

Basement

—

Accessible

—

HOA Dues

—

Garage

—

Features

—

Last updated by owner on Oct 14, 2026.

Sep 13, 2026 • Final

Residential electrical - no service change (homeowner)

Electrical

Aug 27, 2025 • Active

Residential building improvement - interior alteration

Add a shower stall to an existing half bathroom that contains a sink and toilet.

Bathroom

Remodel

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
# of Attached Carport Spaces: 1
# of Total Garage and Parking Spaces: 1
# of Carport Spaces: 1
Attached Carport, Off Street

Interior

Bedroom Information
# of Bedrooms On 1st Upper Level: 4

Bathroom Information
# of Bathrooms (Full) On 1st Upper Level: 2
# of Bathrooms (Half) On Main Level: 1
# of Bathrooms (Full) On 1st Lower Level: 1
# of Bathrooms (Full) On All Upper Levels: 2
# of Bathrooms (Full) On All Lower Levels: 1
# of Bathrooms (Half): 1
# of Bathrooms (Full): 3

Interior Information
Living Area Sq.Ft. Source: Assessor

Room Information
Laundry Type: Basement

Fireplace Information
Has Fireplace
# of Fireplaces: 1

Basement Information
Basement: Yes
Connecting Stairway, Full, Fully Finished, Walkout Stairs

Exterior

Property Information
Total Below Grade Sq. Ft.: 928
Front Foot Fee Payment Frequency: Annually
Improvement Assessed Value: $170,200
Ownership Interest: Fee Simple
Property Condition: Very Good
Year Built Source: Assessor

Building Information
Construction Materials: Brick, Combination
Other Structures: Above Grade, Below Grade
Outdoor Living Structures: Deck(s), Porch(es)
Structure Type: Detached
Other Structures: Shed

Exterior Information
Fencing: Partially

Lot Information
Lot Features: Cul-de-sac
Tidal Water: No

Land Information
Land Assessed Value: $214,700

Above Grade Information
Finished Sq.Ft.: 1,908
Finished Sq.Ft. Source: Assessor

Below Grade Information
Unfinished Sq.Ft.: 228
Unfinished Sq.Ft. Source: Assessor
Finished Sq.Ft.: 700
Finished Sq.Ft. Source: Assessor

Financial

Tax Information
City/Town Tax: $1,080
County Tax: $4,137
Tax Assessed Value: $398,600
Tax Year: 2018
Tax Annual Amount: $5,475

Assessments Information
Year Assessed: 2019

Utilities

Utilities Information
Central Air
Cooling Type: Central A/C
Cooling Fuel: Electric
Forced Air
Heating Fuel: Electric
Hot Water: Electric
Sewer Septic: Public Sewer
Cable TV
Water Source: Public

Location

School Information
Elementary School: DIAMOND
Middle Or Junior School: LAKELANDS PARK
High School: NORTHWEST
School District Name: MONTGOMERY COUNTY PUBLIC SCHOOLS
Elementary School Source: Listing Agent
Middle School Source: Listing Agent
High School Source: Listing Agent
School District Source: Listing Agent

Location Information
In City Limits
Directions: GREAT SENECA HWY NORTH. TURN R ON LONGDRAFT. 1ST R ON PAVILLON. KEYSTONE DR AT END OF PAVILLON. google maps/waze
Municipality: Gaithersburg
Transportation: Bus Stop less than 1 mile

Public facts

Beds: —
Baths: 3.5
Sq. Ft.: 2,608
Stories: 2.0
Lot Size: 9,117 square feet
Style: Single Family Residential
Year Built: 1974
Year Renovated: —
County: Montgomery County
APN: 09 01521427

Home facts updated by county records on Oct 14, 2026

Around this home

Schools

Diamond Elementary School

Public PreK-5 • Assigned • 0.3mi

9/10

Lakelands Park Middle School

Public 6-8 • Assigned • 1.3mi

6/10

Northwest High School

Public 9-12 • Assigned • 2.2mi

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...
1 week ago • Gaithersburg
Bryan Kerrigan
Redfin Premier agent
742 deals
Was this helpful?
With so many different neighborhoods, Gaithersburg is consistently ranked as the #1 most diverse in the entire US!!! From the Kentlands story book design to the new urbanism of Crown Farm, there are several neighborhoods where you can live, play, and...
2 weeks ago • Gaithersburg
Kris Paolini
Redfin Premier agent
797 deals
Was this helpful?

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

12% 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

$673,000 – $814,000

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Home values near 16 Keystone Dr

Data from public records.

Address	Redfin Estimate
21 Keystone Drive, Gaithersburg, MD 5 Beds \| 4.5 Baths \| 2930 Sq. Ft.	$895,616
22 Keystone Drive, Gaithersburg, MD - Beds \| 3 Baths \| 2156 Sq. Ft.	$533,620

Address	Redfin Estimate
26 Keystone Drive, Gaithersburg, MD - Beds \| 3.5 Baths \| 2308 Sq. Ft.	$645,861
20 Keystone Drive, Gaithersburg, MD - Beds \| 3 Baths \| 2156 Sq. Ft.	$668,204

Address	Redfin Estimate
24 Keystone Drive, Gaithersburg, MD - Beds \| 3.5 Baths \| 2588 Sq. Ft.	$685,496
18 Keystone Drive, Gaithersburg, MD 4 Beds \| 3 Baths \| 2492 Sq. Ft.	$673,432

Property information provided by BRIGHT MLS when last listed in 2020. This data may not match . Learn more.

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