21 Thorburn Rd is a 2,220 square foot house on a 9,602 square foot lot with 2.5 bathrooms. Based on Redfin's Gaithersburg data, we estimate the home's value is $780,766.
Single-familyProperty Type
1979Year Built
9,602 sq ftLot Size
$352Est. Price/Sq.Ft.
Source:Public Records
Redfin Estimate
$780,766
$1,000 since August
Recently sold homes
Estimate history
Homes for sale
This home's estimate is 4.7% lower than the average sale price ($820K) of 6 comparable homes.
As the MLS and public records start to fill up, we'll list the details here.
Year
Property tax
Land + Additions
Assessment*
2025
$7,205 (+6.3%)
$289,200 + $404,300
$693,500
2024
$6,781 (+6.4%)
2023
$6,372 (+4.3%)
2022
$6,108 (+1.4%)
$289,200 + $305,100
$594,300
2021
$6,024 (−10.8%)
2020
$6,751 (+0.1%)
2019
$6,741 (−0.2%)
$289,200 + $275,200
$564,400
2018
$6,756 (−9.4%)
$289,200 + $275,200
$564,400
2017
$7,455 (+33.1%)
$289,200 + $322,700
$611,900
2015
$5,599 (−13.2%)
$232,100 + $242,700
$474,800
2012
$6,448 (+3.8%)
2011
$6,213
2010
$6,213 (+37.0%)
2009
$4,536
Tax history for 21 Thorburn Rd
Year
Property tax
Land + Additions
Assessment*
2025
$7,205 (+6.3%)
$289,200 + $404,300
$693,500
2024
$6,781 (+6.4%)
2023
$6,372 (+4.3%)
2022
$6,108 (+1.4%)
$289,200 + $305,100
$594,300
2021
$6,024 (−10.8%)
2020
$6,751 (+0.1%)
2019
$6,741 (−0.2%)
$289,200 + $275,200
$564,400
2018
$6,756 (−9.4%)
$289,200 + $275,200
$564,400
2017
$7,455 (+33.1%)
$289,200 + $322,700
$611,900
2015
$5,599 (−13.2%)
$232,100 + $242,700
$474,800
2012
$6,448 (+3.8%)
2011
$6,213
2010
$6,213 (+37.0%)
2009
$4,536
*Taxable value of land and structures on it ("additions") is determined regularly by local assessors and does not affect market price.
Zoning
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
Property details
Interior
Bathroom Information
# of Full Baths: 2
# 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: Good
Exterior Wall: Frame
Building Type: Single Family
Property Information
Subdivision Name: WESTLEIGH
Living Sq. Ft: 2,220
Building Sq. Ft: 2,704
# of Stories: 2
Stories Type: 2 Story With Basement
Legal Description: WESTLEIGH
Parking & Garage Information
Parking Type: Attached Frame Garage
Garage/Parking Sq. Ft: 484
Garage / Carport Type: Attached Frame
Lot Information
# of Buildings: 1
Land Sq. Ft: 9,602
Legal Lot Number: 8
Legal Block Number: C
Municipality Name: GAITHERSBURG
Acres: 0.2204
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: 2.5
Sq. Ft.: 2,220
Stories: 2.0
Lot Size: 9,602 square feet
Style: Single Family Residential
Year Built: 1979
Year Renovated: —
County: Montgomery County
APN: 09 01522945
Home facts updated by county records on Jul 17, 2026
Around this home
Schools
Dufief Elementary School
Public K-5 • Assigned • 0.6mi
8/10
Robert Frost Middle School
Public 6-8 • Assigned • 3.0mi
9/10
Thomas S. Wootton High School
Public 9-12 • Assigned • 3.2mi
10/10
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...