OFF MARKET

Off market sep 2014 for $675K

$863,912

Est. refi paymentEst. refi $4,495/mo

•

2,398

sq ft

18 Treworthy Rd, Gaithersburg, MD 20878

About this home

Single-familyProperty Type

1973Year Built

9,775 sq ftLot Size

$360Est. Price/Sq.Ft.

2 car garageParking

Listed by Diane Naedel • Coldwell Banker Realty

•301-921-1040 (broker)

Bought with John Zeng • Libra Realty, LLC

•301-972-5588 (broker)

Redfin checked: 3 minutes ago

•Source:BRIGHT MLS #1003120364

Redfin Estimate

$863,912

$189K since sold in September 2014$2,000 since September

Recently sold homes
Estimate history
Homes for sale

This home's estimate is 12.5% higher than the average sale price ($768K) of 6 comparable homes.

SOLD SEP 16, 2026
$700,000
A
4 beds2.5 baths1,974 sq ft
11501 Brandy Hall Ln, North Potomac, MD 20878
SOLD JUL 31, 2026
$858,000
B
4 beds3.5 baths3,240 sq ft
28 Redding Ridge Dr, N Potomac, MD 20878
SOLD JUN 16, 2026
$725,000
C
4 beds2.5 baths2,453 sq ft
11300 Freas Dr, North Potomac, MD 20878
SOLD AUG 17, 2026
$790,000
D
5 beds3 baths3,123 sq ft
16 Redding Rdg, Gaithersburg, MD 20878
SOLD FEB 6, 2026
$785,000
E
4 beds2.5 baths2,096 sq ft
14 Treworthy Rd, Gaithersburg, MD 20878
SOLD MAY 29, 2026
$749,900
F
4 beds3 baths1,648 sq ft
11504 Brandy Hall Ln, North Potomac, MD 20878

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Earn from this home

Sell

$419,239

Est. take-home

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Refinance

Est. cash available

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Rent

$3,638/mo

Redfin rental estimate

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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

99.5%

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

$1,050,000
6 beds3.5 baths4,036 sq ft
15103 Gravenstein Way, North Potomac, MD 20878
(301) 947-9695
OPEN SUN, 2PM TO 4PM
$1,595,000
5 beds4.5 baths5,535 sq ft
13635 Glenhurst Rd, North Potomac, MD 20878
(240) 497-1700
$599,000
4 beds3.5 baths2,040 sq ft
505 Beacon Hill Ter, Gaithersburg, MD 20878
(571) 386-1075
OPEN SAT, 1PM TO 3PM
$1,100,000
4 beds4.5 baths4,015 sq ft
12707 Young Ln, Gaithersburg, MD 20878
(301) 299-6000
COMING SOON
$165,000
2 beds2 baths1,110 sq ft
770 Quince Orchard Blvd #102, Gaithersburg, MD 20878
(240) 630-8689
NEW 32 HRS AGO
$449,997
3 beds3.5 baths1,896 sq ft
32 Sebastiani Blvd, Gaithersburg, MD 20878
(301) 330-1177
$695,000
4 beds3 baths1,822 sq ft
15240 Apricot Ln, North Potomac, MD 20878
(410) 696-2268
COMING SOON
$1,150,000
5 beds4.5 baths4,913 sq ft
14604 Pebblewood Dr, North Potomac, MD 20878
(301) 840-8061
$799,900
4 beds3 baths3,074 sq ft
15716 Jones Ln, Gaithersburg, MD 20878
(202) 386-6330
$699,000
3 beds3.5 baths2,050 sq ft
1002 Main St, Gaithersburg, MD 20878
(240) 219-2422
See all

Provided by Redfin

Sale history for 18 Treworthy Rd

** Price available after signing in.

Year

Property tax

Land + Additions

Assessment*

2026

$9,284 (+4.3%)

$290,200 + $396,200

$686,400

2025

$8,900 (+5.6%)

$290,200 + $396,200

$686,400

2024

$8,425 (−2.6%)

2023

$8,650 (+24.6%)

2022

$6,943 (+1.4%)

$290,200 + $299,200

$589,400

2021

$6,850 (+2.4%)

2020

$6,692 (+0.2%)

2019

$6,682 (−0.2%)

$290,200 + $269,500

$559,700

2018

$6,696 (−9.3%)

$290,200 + $269,500

$559,700

2017

$7,386 (+32.8%)

$290,200 + $316,400

$606,600

2015

$5,560 (−1.5%)

$233,100 + $238,600

$471,700

2014

$5,643 (+1.3%)

2013

$5,570 (−8.3%)

2012

$6,076 (+9.5%)

2011

$5,549

2010

$5,549 (+27.5%)

2009

$4,353

Tax history for 18 Treworthy Rd

Year

Property tax

Land + Additions

Assessment*

2026

$9,284 (+4.3%)

$290,200 + $396,200

$686,400

2025

$8,900 (+5.6%)

$290,200 + $396,200

$686,400

2024

$8,425 (−2.6%)

2023

$8,650 (+24.6%)

2022

$6,943 (+1.4%)

$290,200 + $299,200

$589,400

2021

$6,850 (+2.4%)

2020

$6,692 (+0.2%)

2019

$6,682 (−0.2%)

$290,200 + $269,500

$559,700

2018

$6,696 (−9.3%)

$290,200 + $269,500

$559,700

2017

$7,386 (+32.8%)

$290,200 + $316,400

$606,600

2015

$5,560 (−1.5%)

$233,100 + $238,600

$471,700

2014

$5,643 (+1.3%)

2013

$5,570 (−8.3%)

2012

$6,076 (+9.5%)

2011

$5,549

2010

$5,549 (+27.5%)

2009

$4,353

*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

2.5

Stories

Lot width

—

Lot depth

—

Lot size

9,775 Sq. Ft.

Year renovated

—

Sq. Ft.

2,398

Year built

1973

Style

Single Family Residential

County

Montgomery County

APN

09 01521941

Parking Spaces

—

Basement

—

Accessible

—

HOA Dues

—

Garage

—

Features

—

Last updated by owner on Oct 14, 2026.

Property details

Parking

Parking Information
# of Attached Garage Spaces: 2
Garage Features: Garage Door Opener
# of Total Garage and Parking Spaces: 2
Has Garage
# of Garage Spaces: 2
Garage
Attached Garage

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 (Half): 1
# of Bathrooms (Full): 2

Interior Information
Appliances: Dishwasher, Disposal, Dryer, Icemaker, Exhaust Fan, Microwave, Oven - Self Cleaning, Oven - Double, Oven/Range - Electric, Refrigerator, Washer
Door Features: Six Panel, Sliding Glass
Entry Location: Foyer
Interior Features: Family Room Off Kitchen, Kitchen - Table Space, Dining Area, Master Bath(s), Chair Railings, Upgraded Countertops, Crown Moldings, Recessed Lighting, Floor Plan - Open

Room Information
Master Bedroom, Sun/Florida Room, Laundry, Workshop

Fireplace Information
Has Fireplace
# of Fireplaces: 1
Screen, Mantel(s)

Basement Information
Basement: Yes
Connecting Stairway, Heated, Fully Finished, Shelving, Workshop

Exterior

Property Information
Improvement Assessed Value: $238,600
Ownership Interest: Fee Simple
Property Condition: Very Good
Year Built Source: Estimated

Building Information
Construction Not Completed
Construction Materials: Combination, Brick
Outdoor Living Structures: Deck(s), Porch(es)
Roof: Composite
Structure Type: Detached
Window Features: Bay/Bow, ENERGY STAR Qualified, Screens

Exterior Information
Satellite Dish

Lot Information
Lot Features: Landscaping
Tidal Water: No

Land Information
Land Assessed Value: $233,100

Financial

Tax Information
City/Town Tax: $1,235.85
County Tax: $4,108.51
Tax Assessed Value: $471,700
Tax Year: 2013
Tax Annual Amount: $6,335.29

Assessments Information
Special Assessment Payment: Annually
Year Assessed: 2014

Utilities

Utilities Information
Central Air
Cooling Type: Ceiling Fan(s), Central A/C
Cooling Fuel: Electric
Forced Air
Heating Fuel: Oil
Hot Water: Electric
Sewer Septic: Public Sewer
Cable TV Available
Water Source: Public

Location

Location Information
In City Limits
Directions: Rt. 28 W to right on Treworthy Rd. house on left
Municipality: GAITHERSBURG

Public facts

Beds: —
Baths: 2.5
Sq. Ft.: 2,398
Stories: 2.0
Lot Size: 9,775 square feet
Style: Single Family Residential
Year Built: 1973
Year Renovated: —
County: Montgomery County
APN: 09 01521941

Home facts updated by county records on Oct 14, 2026

Around this home

Schools

Dufief Elementary School

Public K-5 • Assigned • 0.7mi

8/10

Robert Frost Middle School

Public 6-8 • Assigned • 2.9mi

9/10

Thomas S. Wootton High School

Public 9-12 • Assigned • 3.1mi

10/10

Provided by GreatSchools

Lifestyle

Provided by Walk Score and Local Logic

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

$821,000 – $994,000

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Home values near 18 Treworthy Rd

Data from public records.

Address	Redfin Estimate
16 Treworthy Road, Gaithersburg, MD 6 Beds \| 3 Baths \| 2934 Sq. Ft.	$911,403
19 Treworthy Road, Gaithersburg, MD 4 Beds \| 3.5 Baths \| 2996 Sq. Ft.	$867,647

Address	Redfin Estimate
14 Treworthy Road, Gaithersburg, MD 4 Beds \| 2.5 Baths \| 2096 Sq. Ft.	$889,551
17 Treworthy Road, Gaithersburg, MD - Beds \| 3.5 Baths \| 3150 Sq. Ft.	$862,293

Address	Redfin Estimate
21 Treworthy Road, Gaithersburg, MD - Beds \| 4 Baths \| 3610 Sq. Ft.	$890,565
15 Treworthy Road, Gaithersburg, MD - Beds \| 2.5 Baths \| 2096 Sq. Ft.	$781,019

Property information provided by BRIGHT MLS when last listed in 2014. This data may not match . Learn more.

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