This home's estimate is 13.6% higher than the average sale price ($396K) of 6 comparable homes.
Search- Overview
- Sale & tax history
- Property details
- Neighborhood
- Climate





























13646 Unionville Rd, Mount Airy, MD 21771
About this home
CHARMING COLONIAL THAT HAS BEEN UPDATED TO INCLUDE NEWER WINDOWS, HEAT PUMP/AC W/ OIL BACKUP, WATER HEATER, UV WATER PURIFIER, ENTIRE KITCHEN, FLOORING, INTERIOR PAINTING, MAIN AND UPPER LEVEL FULL BATHROOMS, DECK & MUCH MORE. COVERED FRONT PORCH * 25X50 MORTON 2 CAR GARAGE W/ STORAGE * LARGE FAMILY SIZE BACK YARD BORDERING A STREAM * BEAUTIFUL PASTORAL VIEW FROM THE DECK * MIN FROM MD 26 & MD 27
Redfin Estimate
Earn from this home
List your home with Redfin and save $4,496
Get cash now or lower your monthly rate
List your home for rent
Market trends in 21771, MD
Last updated August 2026
Buyer's Market
Seller's Market
Seller's market
- OPEN SUN, 12PM TO 2PM
- OPEN SUN, 11AM TO 1PM
- COMING SOON
- OPEN TODAY, 1PM TO 3PM
- COMING SOON
See all
Provided by Redfin
Sale history for 13646 Unionville Rd
$238/sq ft
$233/sq ft
$238/sq ft
$233/sq ft





$188/sq ft
$196/sq ft
$208/sq ft





$188/sq ft
$196/sq ft
$208/sq ft
$208/sq ft
$104/sq ft
$106/sq ft
$69/sq ft
** Price available after signing in.
Tax history for 13646 Unionville Rd
*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
VC
Village Center District
The Village Center District (VC) is intended to reinforce and enhance the historically mixed-use areas within rural communities and designated growth areas. The district provides for the location of a variety of limited commercial uses and a range of housing types while maintaining the compatibility of new development with existing development through design standards. A mix of uses is encouraged in the village center either within a single structure or as separate uses located throughout the district.Include but are not limited to:
- Agriculture
- Housing-Group
- Housing-Single unit
- Housing-Multiple units
Property details
Parking
- Parking Information
- # of Detached Garage Spaces: 2
- Garage Features: Garage - Front Entry
- # of Total Garage and Parking Spaces: 2
- Has Garage
- # of Garage Spaces: 2
- Garage, Paved Driveway
- Driveway, Detached Garage
Interior
- Bedroom Information
- # of Bedrooms On 1st Upper Level: 3
- Bathroom Information
- # of Bathrooms (Full) On 1st Upper Level: 1
- # of Bathrooms (Full) On Main Level: 1
- # of Bathrooms (Full): 2
- Interior Information
- Appliances: Dishwasher, Disposal, Dryer, Icemaker, Microwave, Oven/Range - Electric, Refrigerator, Washer, Water Heater
- Entry Location: Living Room
- Interior Features: Dining Area, Upgraded Countertops, Master Bath(s), Window Treatments, Wood Floors, Recessed Lighting, Floor Plan - Traditional
- Wall & Ceiling Types: Dry Wall
- Room Information
- Living Room, Dining Room, Master Bedroom, Bedroom 2, Bedroom 3, Kitchen, Family Room, Laundry, Utility Room
- Basement Information
- Basement: Yes
- Connecting Stairway, Rear Entrance, Sump Pump, Partially Finished, Heated, Walkout Level
Exterior
- Property Information
- Improvement Assessed Value: $129,800
- Ownership Interest: Fee Simple
- Property Condition: Very Good
- Year Built Source: Estimated
- Building Information
- Construction Materials: Vinyl Siding
- Structure Type: Detached
- Window Features: Double Pane, Screens
- Other Structures: Shed
- Lot Information
- Tidal Water: No
- Land Information
- Land Assessed Value: $80,800
Financial
- Tax Information
- County Tax: $2,091.63
- Tax Assessed Value: $210,600
- Tax Year: 2017
- Tax Annual Amount: $2,239.64
- Assessments Information
- Special Assessment Payment: Annually
- Year Assessed: 2018
Utilities
- Utilities Information
- Cooling Type: Heat Pump(s)
- Cooling Fuel: Electric
- Electric Previous 12 Months: $1,380
- Electric Average / Month: $115
- Forced Air, Heat Pump(s)
- Heating Fuel: Oil, Electric
- Heating Oil Previous 12 Months: $492
- Heating Oil Average / Month: $41
- Hot Water: Electric
- Sewer Septic: Septic Exists
- Water Source: Well
Location
- School Information
- School District Name: FREDERICK COUNTY PUBLIC SCHOOLS
- Location Information
- Directions: From MD 26 turn onto Unionville Road at Clemsonville. Home is on the right.
Public facts
- Beds: —
- Baths: 2.0
- Sq. Ft.: 1,650
- Stories: 2.0
- Lot Size: 0.62 acres
- Style: Single Family Residential
- Year Built: 1890
- Year Renovated: —
- County: Frederick County
- APN: 19 388085
Around this home
Schools
Public PreK-5 • Assigned • 3.6mi
Public 6-8 • Assigned • 7.9mi
Public 9-12 • Assigned • 4.3mi
Lifestyle
Provided by Walk Score and Local Logic
Climate risks
Estimated 80%+ chance of a flood reaching the building in the next 30 years
0.15% chance of being in a wildfire in next 30 years
7 days above 103° expected this year, 15 days in 30 years
10% chance of strong winds in next 30 years
1 unhealthy days expected this year, 4 days in 30 years
Sun exposure
In this area, properties receive around 9.2 hours in June and 4 hours in December, placing it below the U.S. average for solar exposure.
Nearby similar homes
New listings for sale in 21771
Home values near 13646 Unionville Rd
| Address | Redfin Estimate |
|---|---|
- Beds | 3 Baths | 2682 Sq. Ft. | $738,867 |
3 Beds | 2 Baths | 1632 Sq. Ft. | $388,890 |
| Address | Redfin Estimate |
|---|---|
- Beds | 1 Baths | 1484 Sq. Ft. | $393,609 |
- Beds | 1 Baths | 2613 Sq. Ft. | $380,730 |
| Address | Redfin Estimate |
|---|---|
- Beds | 1 Baths | 2034 Sq. Ft. | $337,829 |
4 Beds | 2 Baths | 1989 Sq. Ft. | $362,508 |
More real estate resources
- Zip Codes
- Neighborhoods
- Cities
- Popular Searches
| 21771 homes for sale | |||
| 21797 homes for sale |
| Mount Airy Historic District homes for sale |
| Columbia homes for sale | |||
| Rockville homes for sale | |||
| Frederick homes for sale |
Find us
Subsidiaries
Affiliated Business
Copyright: © 2026 Redfin. All rights reserved.
Updated September 2025: By searching, you agree to the Terms of Use, and Privacy Policy.
Do not sell or share my personal information.
REDFIN and all REDFIN variants, WALK SCORE, and the R logos, are trademarks of Redfin Corporation, registered or pending in the USPTO.
California DRE #01521930
Redfin is licensed to do business in New York as Redfin Real Estate. NY Standard Operating Procedures
New Mexico Real Estate Licenses
TREC: Info About Brokerage Services, Consumer Protection Notice
All mortgage lending products and information are provided by Rocket Mortgage, LLC | NMLS #3030; www.NMLSConsumerAccess.org. Licensed in 50 states. This site is not authorized by the New York State Department of Financial Services for mortgage solicitation or loan applications activities related to properties located in the State of New York.
Redfin Corporation is an affiliated business of Rocket Limited Partnership. Each company, and their subsidiaries, are separate legal entities operated and managed through its own management and governance structures.
If you are using a screen reader, or having trouble reading this website, please call Redfin Customer Support for help at 1-844-759-7732.
REDFIN IS COMMITTED TO AND ABIDES BY THE FAIR HOUSING ACT AND EQUAL OPPORTUNITY ACT. READ REDFIN'S FAIR HOUSING POLICY AND THE NEW YORK STATE FAIR HOUSING NOTICE.











































United States
Canada