usm white logo

9817 Mainsail DriveGaithersburg, MD 20879Price: $735,000

  • Price: $735,000
  • Est. Mortgage of $/month
  • 5 Days on Market
$
$
%
$/month over payments
Federal 30-year interest rate: 6.76% last updated on Sep 10, 2026
* All Figures are estimates. Check with your bank or proposed mortgage company for actual interest rates.
This product uses the FRED® API but is not endorsed or certified by the Federal Reserve Bank of St. Louis.
  • $735,000List Price
  • 4Bedrooms
  • 3Bathrooms
  • 2,560Square Feet
Welcome to 9817 Mainsail Drive! Situated on a half-acre lot, you'll find the best backyard in the neighborhood! Whether you're entertaining guests, enjoying family time, or simply relaxing outdoors, this backyard offers a rare combination of space, privacy, and enjoyment. Inside, you'll find 4 bedrooms, 2.5 bathrooms, and a versatile den that can easily serve as a home office, playroom, or flex space to meet your needs. A 2-car garage provides added convenience and storage. The home's thoughtful layout is complemented by a stunning living room featuring tall ceilings and skylights that fill the space with natural light and create an open, airy feel. Meticulously maintained by its original owners and thoughtfully improved over the years, this is the kind of house that truly feels like home. Major updates include a new HVAC system, radon mitigation system, updated windows and doors, and new insulation in both the attic and basement. These significant investments enhance comfort, efficiency, and peace of mind for years to come. Upstairs, the spacious primary suite offers an ensuite bathroom featuring a soaking tub and separate shower. Three additional bedrooms and a full bathroom complete the second level, providing plenty of space for family, guests, or hobbies. Combining meaningful updates, flexible living spaces, and a backyard that truly steals the show, 9817 Mainsail Drive offers a rare opportunity to own a home that has been thoughtfully maintained and genuinely loved. Conveniently located near parks, shopping, dining, and commuter routes, this is one you won't want to miss.
Listed by Sophia Ferderer of Keller Williams Capital Properties

Driving Directions

Railey Vacations
Railey Vacations
Office: 301-387-2124
5 Vacation Way
McHenry, MD 21541

Ask A Question

Do not fill in this field:

I agree to receive marketing and customer service calls and text messages from Railey Vacations. To opt out, you can reply 'stop' at any time or click the unsubscribe link in the emails. Consent is not a condition of purchase. Msg/data rates may apply. Msg frequency varies. Privacy Policy.

This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.

More Info

Location Information

  • Date Listed09/10/2026
  • ZoningR-200
  • UsmAreaGaithersburg

Parking

  • Parking TypesAttached Garage, Driveway
  • Total Garage And Parking Spaces2

Building

  • Interior FeaturesAttic, Ceiling Fan(s), Walk-in Closet(s)
  • Association Fee$325
  • Association Fee FrequencyAnnually
  • Association YNYes
  • High School DistrictMontgomery County Public Schools
  • Broker NameKeller Williams Capital Properties
  • Building Number9817
  • DirectionsFrom I-270, take Shady Grove Rd east to Airpark Rd, then turn onto Mainsail Dr and follow to 9817 Mainsail Dr.
  • Num Attached Garage Spaces2
  • Main Level Total Baths1
  • Main Level Half Baths1
  • Upper Levels Total Full Baths2
  • Upper Levels Total Bedrooms4
  • Upper Levels Total Baths2
  • Upper Level1 Bedrooms4
  • Upper Level1 Full Baths2
  • Upper Level1 Total Baths2
  • Story ListMain, Upper 1
  • Structure Design TypeDetached
  • Construction MaterialsVinyl Siding, Combination, Other
  • Property StyleColonial
  • Bedrooms4
  • BasementUnfinished
  • Full Bath2
  • Bathroom3
  • Half Baths1
  • Levels3
  • Fireplace YNYes
  • Fireplace1
  • Garage TypeGarage Door Opener
  • Garage Spaces2
  • GarageYes

Basic Information

  • MLS NumberMDMC2253682
  • Ownership InterestFee Simple
  • List Price$735,000
  • Square Feet2,560
  • Acreage0.51
  • Year Built1986
  • MLS Property TypeResidential
  • StatusACT
  • HOA Fee325.00 / Annually

Property

  • New Construction YNN

Interior

  • Appliances Included
    • Built-In Microwave
    • Dishwasher
    • Disposal
    • Dryer
    • Oven - Double
    • Oven/Range - Electric
    • Washer
    • Water Heater
  • Heating YNYes
  • CoolingCentral A/C
  • Basement YNYes

Property Information

  • Lot Size Square Feet22,216
  • Above Grade Finished Area2560

Amenities

  • PoolNo Pool
  • PricePerSqFt287
  • Other AmenitiesBasement, Fireplace

Tax Information

  • Total Taxes Payment FrequencyAnnually
  • Tax Assessment Amount575000
  • Tax Year2026
  • Taxes$7,014

Location

  • Address9817 Mainsail Drive
  • Area Total2,560
  • SubdivisionGoshen Estates
  • TownGaithersburg
  • StateMD
  • Zip20879
  • CountyMontgomery

Exterior

  • FoundationOther, Active Radon Mitigation

Utilities

  • Water SourcePublic
  • SewerPublic Septic
  • Central Air YNYes
  • Cooling FuelElectric
  • Water HeaterElectric
  • Heating FuelElectric
  • Heat SystemHeat Pump(s)

Copyright 2026 BRIGHT, All Rights Reserved.  Information Deemed Reliable But Not Guaranteed. 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 Railey Vacations 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.Data last updated September 15, 2026. 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.

Hi there! How can we help you?

Contact us using the form below or give us a call.

Send Us A Message:

I agree to receive marketing and customer service calls and text messages from Railey Vacations. To opt out, you can reply 'stop' at any time or click the unsubscribe link in the emails. Consent is not a condition of purchase. Msg/data rates may apply. Msg frequency varies. Privacy Policy.

Do not fill in this field:

This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.

Hi there! How can we help you?

Contact us using the form below or give us a call.

Send Us A Message:

Do not fill in this field:

This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.

Hi there! How can we help you?

Contact us using the form below or give us a call.

Send Us A Message:

Do not fill in this field:

This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.

Do not fill in this field:

This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.

Do not fill in this field:

This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.

Do not fill in this field:

This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.

$

Do not fill in this field:

This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.