SOLD SEP 18, 2026

Sold on sep 2026

$824,900

•

4,000

sq ft

21717 Glendalough Rd, Gaithersburg, MD 20882

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About this home

Welcome to Glendalough, a beautifully appointed estate home just outside of Laytonsville. From the moment you arrive, you'll be impressed by the stately brick front, columns, and wood burning fireplace in the living room, now brightened with new recessed lighting. The office/den also enjoys new recessed lighting and features built-in shelving. The formal dining room features chair rail and crown molding. You're sure to love the large kitchen that features a breakfast bar, granite countertops, & stainless steel appliances. The mudroom off of the garage is a real bonus, with washer dryer and plenty of storage. Upstairs, brand new carpet runs throughout the bedroom level, where you'll find three large bedrooms and a full bathroom plus the Primary bedroom with an extra large en-suite bathroom with a soaking tub, double walk-in closets, and plenty of storage space. The large finished basement has been freshly updated with brand new LVP flooring and fresh paint, and offers a full bathroom, wetbar/kitchenette, fridge, and a bonus pool room AND den/office. But that's not all - this home also has a large backyard on a 1.74 acre private lot that backs to trees. So if you're looking for luxury, privacy, and plenty of space, then Glendalough is the perfect home for you! Located near downtown Laytonsville where you can enjoy small town shops, local breweries & and farms/markets.

Single-familyProperty Type

1978Year Built

1.74 acresLot Size

$206Price/Sq.Ft.

2 garage spacesParking

Listed by Drew Lowe • Long & Foster Real Estate, Inc.

•301-424-0900 (broker)

Bought with Frances McGlaughlin • RE/MAX Realty Services

•240-403-0400 (broker)

•mark@markbutterfield.com (broker)

Redfin checked: 3 minutes ago

•Source:BRIGHT MLS #MDMC2246268

Redfin Estimate

$846,026

$21K since sold in September 2026$52K since August

Recently sold homes
Estimate history
Homes for sale

This home's estimate is 7.5% lower than the average sale price ($914K) of 6 comparable homes.

SOLD DEC 29, 2025
$1,100,000
A
4 beds3.5 baths2,970 sq ft
6400 Griffith Rd, Gaithersburg, MD 20882
SOLD APR 30, 2026
$935,000
B
4 beds3.5 baths4,020 sq ft
21600 Glendalough Rd, Gaithersburg, MD 20882
SOLD JUL 30, 2026
$850,000
C
4 beds3.5 baths3,080 sq ft
20920 Sunnyacres Rd, Gaithersburg, MD 20882
SOLD MAY 15, 2026
$760,000
D
4 beds3.5 baths3,220 sq ft
21800 Glendalough Rd, Gaithersburg, MD 20882
SOLD FEB 17, 2026
$915,000
E
5 beds3.5 baths3,604 sq ft
20601 Miracle Dr, Gaithersburg, MD 20882
SOLD AUG 24, 2026
$925,000
F
6 beds3.5 baths4,437 sq ft
8009 Exodus Dr, Gaithersburg, MD 20882

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Market trends in 20882, MD

Last updated August 2026

Buyer's Market

Seller's Market

Seller's market

Sale-to-List Price

100.3%

0.8% MoM

Median sale price

$835K

$3K MoM

Avg. days on market

38d

4 days MoM

Recently sold homes

1 MoM

New listings for sale

COMING SOON
$1,340,000
6 beds6 baths7,040 sq ft
21300 Golf Estates Dr, Gaithersburg, MD 20882
(301) 774-5900
COMING SOON
$920,000
4 beds4.5 baths5,036 sq ft
8021 Lions Crest Way, Gaithersburg, MD 20879
(301) 202-5150
VIDEO TOUR
$1,500,000
8 beds4.5 baths6,400 sq ft
4915 Sundown Rd, Gaithersburg, MD 20882
(301) 424-0900
$1,250,000
4 beds4.5 baths5,886 sq ft
19623 Hoover Farm Dr, Laytonsville, MD 20882
(301) 774-5900
OPEN SAT, 2PM TO 4PM
$799,990
4 beds3.5 baths2,510 sq ft
1 Hickory Spring Ct, Gaithersburg, MD 20882
(703) 310-6111
3D WALKTHROUGH
$425,000
3 beds3 baths1,762 sq ft
9520 Melrose Square Way, Gaithersburg, MD 20882
(301) 591-3920
3D WALKTHROUGH
$1,290,000
5 beds4.5 baths5,520 sq ft
25112 Vista Ridge Rd, Laytonsville, MD 20882
(202) 888-1127
$1,499,000
5 beds4.5 baths7,300 sq ft
22400 Rolling Hill Ln, Gaithersburg, MD 20882
(301) 428-8200
$1,350,000
6 beds4.5 baths6,622 sq ft
4912 Ripplemead Ct, Brookeville, MD 20882
(443) 574-1600
See all

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Rental estimate

Est. $3,559 per month, based on comparable rentals

Redfin agents who toured

Home sits on a good size lot with tree house in back yard. Home flows well and nicely maintained. Rooms are a decent size. Home and basement need updating.
10 years ago• May not reflect the current state of the home
Leslie Amos
Redfin Associate agent

Sale and tax history for 21717 Glendalough Rd

Sale History
Tax History

Date

Event

Price

BRIGHT MLS #MDMC2246268

Sep 18, 2026

Sold

$824,900

$206/sq ft

Sep 4, 2026

Pending

—

Aug 18, 2026

Contingent

—

Jul 29, 2026

Listed

$824,900

$206/sq ft

Jul 20, 2026

Coming Soon

$824,900

$206/sq ft

BRIGHTMLS #MDMC2142746

Oct 3, 2024

Rental Removed

$4,150

$1/sq ft

Sep 12, 2024

Price Changed

$4,150

$1/sq ft

Aug 2, 2024

Listed for Rent

$4,400

$1/sq ft

Public Records

Aug 31, 2016

Sold

$495,000

$124/sq ft

BRIGHT MLS #1002424983

Jul 27, 2016

Sold

$495,000

$124/sq ft

+25

MRIS #MC9654914

Jul 27, 2016

Sold

$495,000

$124/sq ft

Jun 28, 2016

Pending

—

Jun 21, 2016

Price Changed

$124/sq ft

May 28, 2016

Price Changed

$125/sq ft

May 12, 2016

Listed

$127/sq ft

+25

BRIGHT MLS #1007529242

Dec 3, 2015

Listing Removed

—

Jun 19, 2015

Listed

$515,000

$129/sq ft

BRIGHT MLS #1007078412

May 15, 2015

Listing Removed

—

May 15, 2014

Listed

$550,000

$138/sq ft

Public Records

Dec 28, 1988

Sold

$329,000

$82/sq ft

** Price available after signing in.

Year

Property tax

Land + Additions

Assessment*

2025

$9,443 (+7.7%)

$210,100 + $595,900

$806,000

2024

$8,768 (+7.5%)

2023

$8,158 (+5.5%)

2022

$7,729 (+2.0%)

$210,100 + $445,400

$655,500

2021

$7,576 (+1.6%)

2020

$7,455 (+3.2%)

2019

$7,220 (+3.0%)

$210,100 + $420,500

$630,600

2018

$7,009 (+1.4%)

2017

$6,909 (+23.6%)

$210,100 + $362,000

$572,100

2015

$5,592 (+0.4%)

$210,100 + $310,800

$520,900

2014

$5,572 (+1.6%)

2013

$5,482 (+1.2%)

2012

$5,418 (+5.1%)

2011

$5,155

2010

$5,155 (+7.0%)

2009

$4,820

Public record

Public record
Zoning

Beds

—

Baths

3.5

Stories

Lot width

—

Lot depth

—

Lot size

1.74 Acres

Year renovated

—

Sq. Ft.

4,000

Year built

1978

Style

Single Family Residential

County

Montgomery County

APN

01 01823464

Parking Spaces

—

Basement

—

Accessible

—

HOA Dues

—

Garage

—

Features

—

Last updated by owner on Jul 18, 2026.

Agricultural Reserve Zone

The intent of the AR zone is to promote agriculture as the primary land use in areas of the County designated for agricultural preservation in the general plan, the Functional Master Plan for Preservation of Agriculture and Rural Open Space, and other current or future master plans. The AR zone accomplishes this intent by providing large areas of generally contiguous properties suitable for agricultural and related uses and permitting the transfer of development rights from properties in this zone to properties in designated receiving areas; Agriculture is the preferred use in the AR zone. All agricultural operations are permitted at any time, including the operation of farm machinery. An agricultural use cannot be restricted on the grounds that it interferes with other uses permitted in the zone but uses that are not exclusively agricultural in nature must satisfy additional use standards or the conditional use approval process; The intent of the child lot option in the AR zone is to facilitate the continuation of the family farming unit and to otherwise meet the purposes of the AR zone.

Permitted uses

Include but are not limited to:

Agriculture
Housing-Single unit
Infrastructure-Other
Public service
Transportation-Other

Property details

Parking

Parking Information
# of Attached Garage Spaces: 2
Garage Features: Garage - Side Entry
# of Total Garage and Parking Spaces: 7
Has Garage
# of Garage Spaces: 2
Driveway - # of Spaces: 5
Asphalt Driveway
Attached Garage, Driveway

Interior

Virtual Tour

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: Main Floor

Fireplace Information
Has Fireplace
# of Fireplaces: 1

Basement Information
Basement: Yes
Walkout Level

Exterior

Property Information
Total Below Grade Sq. Ft.: 980
Front Foot Fee Payment Frequency: Annually
Improvement Assessed Value: $595,900
Ownership Interest: Fee Simple
Year Built Source: Estimated

Building Information
Construction Materials: Brick Front, Vinyl Siding
Foundation Details: Block
Main Entrance Orientation: West
Other Structures: Above Grade, Below Grade
Roof: Asphalt, Shingle
Structure Type: Detached

Lot Information
Tidal Water: No

Land Information
Land Assessed Value: $210,100

Above Grade Information
Finished Sq.Ft.: 3,020
Finished Sq.Ft. Source: Assessor

Below Grade Information
Finished Sq.Ft.: 980
Finished Sq.Ft. Source: Assessor

Financial

Tax Information
County Tax: $8,701
Tax Assessed Value: $806,000
Tax Year: 2026
Tax Annual Amount: $9,443

Assessments Information
Year Assessed: 2026

Utilities

Utilities Information
Central Air
Cooling Type: Central A/C
Cooling Fuel: Electric
Central
Heating Fuel: Oil
Hot Water: Electric
Sewer Septic: On Site Septic, Septic Exists
Water Source: Well

Location

School Information
Elementary School: LAYTONSVILLE
Middle Or Junior School: GAITHERSBURG
High School: GAITHERSBURG
School District Name: MONTGOMERY COUNTY PUBLIC SCHOOLS

Location Information
Outside City Limits
Directions: Heading North on Woodfield Rd (124), Right on to Brink Rd, Left on to Glendalough Rd, Property will be on your right

Public facts

Beds: —
Baths: 3.5
Sq. Ft.: 4,000
Stories: 2.0
Lot Size: 1.74 acres
Style: Single Family Residential
Year Built: 1978
Year Renovated: —
County: Montgomery County
APN: 01 01823464

Home facts updated by county records on Jul 17, 2026

Around this home

Schools

Laytonsville Elementary School

Public K-5 • Assigned • 1.4mi

7/10

Gaithersburg Middle School

Public 6-8 • Assigned • 4.9mi

4/10

Gaithersburg High School

Public 9-12 • Assigned • 5.6mi

3/10

Provided by GreatSchools

Climate risks

1/10 Flood Factor

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

3/10 Fire Factor

0.31% chance of being in a wildfire in next 30 years

5/10 Heat Factor

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

4/10 Wind Factor

10% chance of strong winds in next 30 years

2/10 Air Factor

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

Provided by First Street

Historical weather

Gaithersburg, MD • 20882

Average low and high temperatures (°F)

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Sun exposure

70/ 100

Good sunlight

Sunscore

There appears to be minimal shading by surrounding buildings, terrain, and vegetation.

7.1 hrs

4 hrs

JuneDecember

Provided by Shadowmap

Estimated sale price

$804,000 – $973,000

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Home values near 21717 Glendalough Rd

Data from public records.

Address	Redfin Estimate
21709 Glendalough Rd, Gaithersburg, MD 6 Beds \| 3.5 Baths \| 4840 Sq. Ft.	$848,211
21805 Glendalough Rd, Gaithersburg, MD 4 Beds \| 2.5 Baths \| 3247 Sq. Ft.	$797,052

Address	Redfin Estimate
21704 Glendalough Rd, Gaithersburg, MD - Beds \| 2.5 Baths \| 3020 Sq. Ft.	$847,959
21809 Glendalough Rd, Gaithersburg, MD 4 Beds \| 3 Baths \| 3297 Sq. Ft.	$804,300

Address	Redfin Estimate
21713 Glendalough Rd, Gaithersburg, MD - Beds \| 3.5 Baths \| 3278 Sq. Ft.	$1,027,600
21813 Glendalough Rd, Gaithersburg, MD 4 Beds \| 2.5 Baths \| 3020 Sq. Ft.	$796,012

Property information provided by BRIGHT MLS when last listed in 2024. This data may not match . Learn more.

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21717 Glendalough Rd, Gaithersburg, MD 20882

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About this home

Redfin Estimate

Market trends in 20882, MD

Homeowner tools

Redfin agents who toured

Sale and tax history for 21717 Glendalough Rd

Public record

Property details

Parking

Interior

Exterior

Financial

Utilities

Location

Public facts

Around this home

Schools

Climate risks

Historical weather

Sun exposure

Nearby similar homes

New listings for sale in 20882

Home values near 21717 Glendalough Rd

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