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L. Custen Realty, Inc. d/b/a Realty.com/L. Custen Realty CT, LLC d/b/a Realty.com (Tom O’Leary-Broker)(CT properties only), 8323 Southwest Freeway, Suite 900, Houston, Texas 77074

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  1. Home/
  2. MD/
  3. MOUNT AIRY/
  4. 4427 ROOP ROAD
4427 ROOP ROAD, MOUNT AIRY MD 21771 — Street View

No listing photos

4427 ROOP ROAD, MOUNT AIRY MD 21771

—

Beds

1

Baths

936

Sqft

1920

Year built

Estimated value: $329,884

Range $258,604 – $380,716 · as of May 27, 2026

How this estimate has moved

ATTOM automated valuation model · 37 published estimates over 6.4 years · shaded band is the model's own published low-to-high range

$300,300 January 2020 May 2026
$329,884

Highest reading $365,000 in February 2024; lowest $283,584 in March 2026. The vertical scale starts at the series' own low, not at zero — it is drawn to show movement, not absolute size.

Public records

  • — beds
  • 1 baths
  • 936 sqft
  • 65,340 sqft lot
  • Built 1920
  • Stories: 2
  • Use: RESIDENTIAL
  • APN 09-028455

Estimate your monthly payment

$65,977

Estimated monthly payment

$2,115/mo

Principal & interest$1,696
Property tax$302
Home insurance$117

Loan amount $263,907. Estimate only — your actual rate and payment depend on credit, location, and lender.

Tax history

2026 roll

Assessed total
$198,333
County market value
$205,000
Property tax billed
$2,206

Sale & deed history

  • October 4, 2024Arm's-length$290,000
  • February 20, 1990$119,900

Safety & registry resources

Review official public-safety information for any area from these government sources:

  • U.S. Dept. of Justice National Sex Offender Public Website (NSOPW)
  • FBI: state sex-offender registry directory
4427 Roop Road, Mount Airy MD 21771 | Realty.com

Nearby places

Within 2 miles of this home: 1 restaurant or café.

Place data from OpenStreetMap.

Food & drink

  • VCP

    1.3 mi

Sources for the nearby listings shown on this page

Bright MLS
The data relating to real estate for sale on this website appears in part through the BRIGHT Internet Data Exchange program, a voluntary cooperative exchange of property listing data between licensed real estate brokerage firms in which Realty.com participates, and is provided by BRIGHT through a licensing agreement. The information provided by this website is for the personal, non-commercial use of consumers and may not be used for any purpose other than to identify prospective properties consumers may be interested in purchasing. Some properties which appear for sale on this website may no longer be available because they are under contract, have Closed or are no longer being offered for sale.
Listing information ©2026 BRIGHT MLS®. All Rights Reserved, Information deemed reliable but not guaranteed. Data Last Updated: 2026-08-31 16:14:55 UTC

Some properties which appear for sale on this web site may subsequently have sold or may no longer be available.

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The 21771 market

Homes for sale
51
Median list price
$725,000
Realty.com
Buy

Start here

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  • Home buying tips
  • Before you start looking
  • The buying timeline

Afford it

  • Today's mortgage rates
  • Mortgage calculator
  • How much can I afford?
  • Get pre-approved

Make the deal

  • Writing a winning offer
  • Inspections & appraisals
  • Closing costs, itemized
  • Find a buyer's agent
Save searchAdvertiseSign In
Saved homesSaved searchesYour toursYour inquiriesRecently viewedAccount settings

Safety & registry resources

Review official public-safety information for any area from these government sources:

  • U.S. Dept. of Justice National Sex Offender Public Website (NSOPW)
  • FBI: state sex-offender registry directory
Save search
3 bedsNew constructionWith a pool
49 listings
Sell

Selling Options

  • What's my home worth?
  • Compare selling options
  • Get an instant cash offer
  • Buy before you sell

Resources

  • How selling works
  • When should I sell?
  • Home selling tips
  • Pricing your home
  • What's worth fixing first
  • Find a seller's agent
Home Loans
Find an Agent

Homes for Sale in Mount Airy, MD

Hide Map
24 of 49 Listings
Map

Homes for Sale in Mount Airy, MD

24 of 49 Listings

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  • 123

    Explore Mount Airy homes

    By price

    • Under $300K
    • Under $500K
    • Under $700K
    • Luxury

    By bedrooms

    • 2 beds
    • 3 beds
    • 4 beds
    • 5 beds

    By type

    • Single family
    • Townhomes
    • Condos
    • Manufactured homes
    • Multi-family homes
    • Co-ops

    By feature

    • New construction
    • With a pool

    Listing data & MLS disclosures

    Bright MLS
    The data relating to real estate for sale on this website appears in part through the BRIGHT Internet Data Exchange program, a voluntary cooperative exchange of property listing data between licensed real estate brokerage firms in which Realty.com participates, and is provided by BRIGHT through a licensing agreement. The information provided by this website is for the personal, non-commercial use of consumers and may not be used for any purpose other than to identify prospective properties consumers may be interested in purchasing. Some properties which appear for sale on this website may no longer be available because they are under contract, have Closed or are no longer being offered for sale.
    Listing information ©2026 BRIGHT MLS®. All Rights Reserved, Information deemed reliable but not guaranteed. Data Last Updated: 2026-08-31 17:27:55 UTC

    Nearby schools

    School ratings (A+ to F) from HJN community data.

    • Winfield Elementary School

      PK-5 · Regular · Carroll County Public Schools

      724 students · 13.7:1 student–teacher

      Winfield Elementary School school rating: B+ 3.0 mi
    • South Carroll High School

      9-12 · Regular · Carroll County Public Schools

      933 students · 17.7:1 student–teacher

      South Carroll High School school rating: A- 3.7 mi

    Location

    Mount Airy, MD community profile

    Population
    10,319
    Median income
    $136,302
    Housing units
    3,794
    People per sq. mi.
    121.1
    Area
    85.2 sq. mi.

    Source: HJN community data

    Nearby areas

    ZIP codes

    • 20906 (171)
    • 21701 (158)
    • 21702 (150)
    • 20878 (127)
    • 20852 (124)
    • 20850 (116)
    • 20874 (111)
    • 20707 (98)

    Cities

    • Frederick (452)
    • Silver Spring (298)
    • Rockville (256)
    • Laurel (225)
    • Gaithersburg (216)
    • Germantown (151)
    • Columbia (126)
    • Ellicott City (111)

    Mount Airy housing market

    July 2026 · This period is still settling

    Mount Airy 12-month median sale price trend

    Selling at 100.0% of asking price

    Sales here are closing essentially at asking. MLS · 35 sales · as of Jul 31, 2026

    Homes that sold · County records, as of Jul 29, 2026

    Median sale price
    $627,500$506,250–$830,000 typical range
    Price per sq. ft.
    $296
    Sales
    26
    Paid in cash
    15.4%

    Homes on the market · MLS, as of Jul 21, 2026–Jul 31, 2026

    Median list price
    $687,500
    Homes for sale
    40
    Median days on market
    16 days

    Price trend · Assessor repeat sales, as of Jul 31, 2026

    Year-over-year
    5.1%

    Housing stock — every home in the area, not only the ones selling or listed · Assessor records, as of Jul 14, 2026

    Median home size
    2,216 sq. ft.