This home's estimate is 4.7% lower than the average sale price ($686K) of 6 comparable homes.
Search- Overview
- Sale & tax history
- Property details
- Neighborhood
- Climate





























































4009 Twin Arch Rd, Mount Airy, MD 21771
About this home
Beautiful renovated 4 Bed, 3.5 Bath single house in sought-after Mt Airy with sweeping views and designer features: waterfall Granite kitchen island, 20 ft cathedral ceiling, unique light fixtures, panoramic windows and a huge wrap around composite deck will have you speechless. ------ fully custom chefs kitchen, featuring stainless steel appliances, solid wood cabinets, granite countertops and plenty island bar seating. -----2 of the 4 bedrooms are full master suites with tons of closet space. -----2 acres of beautiful grounds with country views, pond, huge 4+ car heated garage/workshop with power. (driveway to the garage is to the right of the line of trees) -----This house is anything but cookie cutter -----Conveniently located, close to shopping center. -----Great public schools! A must see!
Redfin Estimate
Earn from this home
List your home with Redfin and save $6,543
Get cash now or lower your monthly rate
List your home for rent
Market trends in 21771, MD
Last updated September 2026
Buyer's Market
Seller's Market
Seller's market
- COMING SOON
- COMING SOON
112 Cloverdale Ct, Mount Airy, MD 21771 See all
Provided by Redfin
Redfin agents who toured
- Home has been updated throughout. Sits at the end of a long shared driveway. Pond sits in the front yard.8 years ago• May not reflect the current state of the homeRedfin agent
Sale history for 4009 Twin Arch Rd
$186/sq ft
$187/sq ft
$187/sq ft
$133/sq ft
$136/sq ft
$133/sq ft
$137/sq ft
$139/sq ft
$141/sq ft
$136/sq ft
$133/sq ft
** Price available after signing in.
Tax history for 4009 Twin Arch 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
R-40,000
Residence District
The purpose of the R-40,000 Residence District is primarily to provide a location for single-family residential development, the individual lots of which generally contain a minimum of 40,000 sq ft. This district is generally not intended to be served with public water or sewerage facilities although in special situations, it may be. The district would generally coincide with areas designated for low-density residential development on the Master Plan.Include but are not limited to:
- Agriculture
- Religious facility
- Housing-Single unit
- Housing-Senior
- Public service
- Educational/school
Property details
Parking
- Parking Information
- # of Detached Garage Spaces: 4
- Garage Features: Garage - Front Entry, Additional Storage Area, Covered Parking, Oversized
- # of Total Garage and Parking Spaces: 9
- Has Garage
- # of Garage Spaces: 4
- Concrete Driveway, Heated, Lighted Parking, Paved Parking, Private, Secure Parking, Surface
- # of Open Parking Spaces: 5
- Detached Garage, Off Street, Driveway
Interior
- Virtual Tour
- Bedroom Information
- # of Bedrooms On 1st Upper Level: 1
- # of Bedrooms On 2nd Upper Level: 1
- # of Bedrooms On Main Level: 2
- Bathroom Information
- # of Bathrooms (Half) On 1st Upper Level: 1
- # of Bathrooms (Full) On 1st Upper Level: 1
- # of Bathrooms (Full) On 2nd Upper Level: 1
- # of Bathrooms (Full) On Main Level: 1
- # of Bathrooms (Half) On All Upper Levels: 1
- # of Bathrooms (Full) On All Upper Levels: 2
- # of Bathrooms (Half): 1
- # of Bathrooms (Full): 3
- Interior Information
- Appliances: Built-In Range, Dishwasher, Disposal, Exhaust Fan, Range Hood, Oven/Range - Electric, Refrigerator, Stainless Steel Appliances, Stove, Water Heater
- Door Features: Sliding Glass, Insulated
- Interior Features: Breakfast Area, Bar, Carpet, Combination Dining/Living, Combination Kitchen/Dining, Combination Kitchen/Living, Dining Area, Entry Level Bedroom, Exposed Beams, Family Room Off Kitchen, Floor Plan - Open, Kitchen - Eat-In, Kitchen - Gourmet, Kitchen - Island, Master Bath(s), Recessed Lighting, Upgraded Countertops
- Living Area Sq.Ft. Source: Estimated
- Room Information
- Living Room, Dining Room, Master Bedroom, Bedroom 2, Kitchen, Family Room, Den, Bedroom 1, Utility Room, Bathroom 1, Master Bathroom, Half Bath
- Laundry Type: Hookup
- Fireplace Information
- Has Fireplace
- # of Fireplaces: 1
- Brick, Mantel(s)
- Basement Information
- Basement: Yes
- Full
Exterior
- Property Information
- Not Federal Flood Zone
- Total Below Grade Sq. Ft.: 900
- Horse: No
- Improvement Assessed Value: $137,500
- Ownership Interest: Fee Simple
- Year Built Source: Assessor
- Building Information
- Construction Materials: Vinyl Siding
- Other Structures: Above Grade, Below Grade
- Outdoor Living Structures: Balcony, Deck(s), Patio(s), Porch(es), Roof, Terrace, Wrap Around
- Structure Type: Detached
- Window Features: Double Pane, Energy Efficient, Insulated
- Exterior Information
- Extensive Hardscape, Exterior Lighting, Flood Lights, Other
- Lot Information
- Has Water View
- Tidal Water: No
- Land Information
- Land Assessed Value: $149,600
- Above Grade Information
- Finished Sq.Ft.: 1,350
- Finished Sq.Ft. Source: Assessor
- Below Grade Information
- Unfinished Sq.Ft. Source: Estimated
- Finished Sq.Ft.: 900
- Finished Sq.Ft. Source: Estimated
Financial
- Tax Information
- County Tax: $3,244
- Tax Assessed Value: $287,100
- Tax Year: 2018
- Tax Annual Amount: $3,304
- Assessments Information
- Year Assessed: 2018
Utilities
- Utilities Information
- Central Air
- Cooling Type: Central A/C
- Cooling Fuel: Electric
- Central
- Heating Fuel: Electric
- Sewer Septic: Community Septic Tank, Private Septic Tank
- Water Source: Well
Location
- School Information
- School District Name: CARROLL COUNTY PUBLIC SCHOOLS
- School District Source: Listing Agent
- Location Information
- Outside City Limits
- Location Type: Creek
- Municipality: carroll
Public facts
- Beds: 4
- Baths: 3.5
- Sq. Ft.: 2,250
- Stories: 1.5
- Parking Spaces: 9
- Basement: Yes
- Accessible: No
- Lot Size: 1.96 acres
- Style: Single Family Residential
- Year Built: 1973
- Year Renovated: —
- County: Carroll County
- APN: 13 003297
- HOA Dues: —
- Garage: Yes
- Features: Views
Around this home
Schools
Public PreK-2 • Assigned • 1.2mi
Public 6-8 • Assigned • 1.3mi
Public 9-12 • Assigned • 7.7mi
Lifestyle
Provided by Walk Score and Local Logic
Climate risks
Minimal risk 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 101° expected this year, 15 days in 30 years
10% chance of strong winds in next 30 years
2 unhealthy days expected this year, 3 days in 30 years
Sun exposure
In this area, properties receive around 9.2 hours in June and 4.1 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 4009 Twin Arch Rd
| Address | Redfin Estimate |
|---|---|
- Beds | 3.5 Baths | 3683 Sq. Ft. | $655,251 |
- Beds | 1 Baths | 2588 Sq. Ft. | $585,966 |
| Address | Redfin Estimate |
|---|---|
- Beds | 2 Baths | 1512 Sq. Ft. | $466,992 |
- Beds | 2.5 Baths | 2524 Sq. Ft. | $602,133 |
| Address | Redfin Estimate |
|---|---|
- Beds | 1 Baths | 1218 Sq. Ft. | $351,663 |
- Beds | 1 Baths | 1072 Sq. Ft. | $324,943 |
More real estate resources
- Neighborhoods
- Zip Codes
- Cities
- Popular Searches
| Mount Airy Historic District homes for sale |
| 21771 homes for sale | |||
| 21797 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