# 9817 MAINSAIL Drive, Gaithersburg, MD 20879 > **TL;DR:** 4bd/3ba single family, $735,000 ($287/sqft), built 1986, 2,560 sqft. > Fireplace, A/C, 2-car garage. Est. $4,256/mo. Listed 19 days. ## Property at a Glance | Attribute | Value | |-----------|-------| | Price | $735,000 | | Price/sqft | $287 | | Bedrooms | 4 | | Bathrooms | 2 full, 1 half | | Square Feet | 2,560 | | Year Built | 1986 | | Lot Size | 22,216 sqft (0.51 acres) | | Stories | 3 | | Garage | 2-car | | Property Type | Single Family (Other) | | Status | Active | | Days on Market | 19 | ## Estimated Monthly Costs | Category | Amount | |----------|--------| | Principal & Interest (20% down, 30-year at 6.5%) | $3,717 | | Estimated Insurance | $214 | | HOA | $325 | | **Total** | **$4,256** | ## Key Amenities - Fireplace - A/C - 2-car garage ## Property Highlights - Built in 1986 - 0.51 acre lot - 3 stories - 2 parking spaces - Fireplace ## Description ### Agent Description Welcome to 9817 Mainsail Drive! Situated on a half-acre lot, you'll find the best backyard in the neighborhood! The owners have thoughtfully opened up the landscape, creating a spacious, more leveled area rarely found on nearby lots. 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. ## Location - **Address:** 9817 MAINSAIL Drive, Gaithersburg, MD 20879 - **County:** MONTGOMERY - **Neighborhood:** GOSHEN ESTATES - **Coordinates:** 39.19332, -77.20292 - **Google Maps:** https://www.google.com/maps?q=39.19332,-77.20292 ## Listing Agent - **Name:** Sophia Ferderer · **License:** 5018770 - **Brokerage:** Keller Williams Capital Prop. - **Phone:** (202) 243-7700 - **Broker Phone:** (202) 243-7700 - **Listing URL:** [View original listing](https://www.realtor.com/realestateandhomes-detail/9817-Mainsail-Dr_Gaithersburg_MD_20879_M58026-60778?f=listhub&s=TRENDPA&m=MDMC2253682&c=propsimple) ## Photos ![9817 MAINSAIL Drive - Photo 1](http://lh.rdcpix.com/306d1faefc3426371c94d8666c7375a8l-f2165428400r.jpg) ![9817 MAINSAIL Drive - Photo 2](http://lh.rdcpix.com/306d1faefc3426371c94d8666c7375a8l-f2424315447r.jpg) ![9817 MAINSAIL Drive - Photo 3](http://lh.rdcpix.com/306d1faefc3426371c94d8666c7375a8l-f669228837r.jpg) ![9817 MAINSAIL Drive - Photo 4](http://lh.rdcpix.com/306d1faefc3426371c94d8666c7375a8l-f3211632908r.jpg) ![9817 MAINSAIL Drive - Photo 5](http://lh.rdcpix.com/306d1faefc3426371c94d8666c7375a8l-f1510284869r.jpg) ![9817 MAINSAIL Drive - Photo 6](http://lh.rdcpix.com/306d1faefc3426371c94d8666c7375a8l-f4121604459r.jpg) ![9817 MAINSAIL Drive - Photo 7](http://lh.rdcpix.com/306d1faefc3426371c94d8666c7375a8l-f160284857r.jpg) ![9817 MAINSAIL Drive - Photo 8](http://lh.rdcpix.com/306d1faefc3426371c94d8666c7375a8l-f3066991519r.jpg) ![9817 MAINSAIL Drive - Photo 9](http://lh.rdcpix.com/306d1faefc3426371c94d8666c7375a8l-f2593265831r.jpg) ![9817 MAINSAIL Drive - Photo 10](http://lh.rdcpix.com/306d1faefc3426371c94d8666c7375a8l-f3508816268r.jpg) ![9817 MAINSAIL Drive - Photo 11](http://lh.rdcpix.com/306d1faefc3426371c94d8666c7375a8l-f439197465r.jpg) ![9817 MAINSAIL Drive - Photo 12](http://lh.rdcpix.com/306d1faefc3426371c94d8666c7375a8l-f2744994127r.jpg) ![9817 MAINSAIL Drive - Photo 13](http://lh.rdcpix.com/306d1faefc3426371c94d8666c7375a8l-f341502704r.jpg) ![9817 MAINSAIL Drive - Photo 14](http://lh.rdcpix.com/306d1faefc3426371c94d8666c7375a8l-f2287555660r.jpg) ![9817 MAINSAIL Drive - Photo 15](http://lh.rdcpix.com/306d1faefc3426371c94d8666c7375a8l-f4240707415r.jpg) ![9817 MAINSAIL Drive - Photo 16](http://lh.rdcpix.com/306d1faefc3426371c94d8666c7375a8l-f3838433330r.jpg) ![9817 MAINSAIL Drive - Photo 17](http://lh.rdcpix.com/306d1faefc3426371c94d8666c7375a8l-f2647854468r.jpg) ![9817 MAINSAIL Drive - Photo 18](http://lh.rdcpix.com/306d1faefc3426371c94d8666c7375a8l-f1177481612r.jpg) ![9817 MAINSAIL Drive - Photo 19](http://lh.rdcpix.com/306d1faefc3426371c94d8666c7375a8l-f1165454436r.jpg) ![9817 MAINSAIL Drive - Photo 20](http://lh.rdcpix.com/306d1faefc3426371c94d8666c7375a8l-f4287078785r.jpg) ![9817 MAINSAIL Drive - Photo 21](http://lh.rdcpix.com/306d1faefc3426371c94d8666c7375a8l-f71165600r.jpg) ![9817 MAINSAIL Drive - Photo 22](http://lh.rdcpix.com/306d1faefc3426371c94d8666c7375a8l-f660393565r.jpg) ![9817 MAINSAIL Drive - Photo 23](http://lh.rdcpix.com/306d1faefc3426371c94d8666c7375a8l-f879152885r.jpg) ![9817 MAINSAIL Drive - Photo 24](http://lh.rdcpix.com/306d1faefc3426371c94d8666c7375a8l-f276480497r.jpg) ![9817 MAINSAIL Drive - Photo 25](http://lh.rdcpix.com/306d1faefc3426371c94d8666c7375a8l-f2652736617r.jpg) ![9817 MAINSAIL Drive - Photo 26](http://lh.rdcpix.com/306d1faefc3426371c94d8666c7375a8l-f1115128942r.jpg) ![9817 MAINSAIL Drive - Photo 27](http://lh.rdcpix.com/306d1faefc3426371c94d8666c7375a8l-f3640226927r.jpg) ![9817 MAINSAIL Drive - Photo 28](http://lh.rdcpix.com/306d1faefc3426371c94d8666c7375a8l-f1088268825r.jpg) ![9817 MAINSAIL Drive - Photo 29](http://lh.rdcpix.com/306d1faefc3426371c94d8666c7375a8l-f3796820021r.jpg) ![9817 MAINSAIL Drive - Photo 30](http://lh.rdcpix.com/306d1faefc3426371c94d8666c7375a8l-f157115154r.jpg) --- **MLS#:** MDMC2253682 | **Updated:** 2026-09-28 **Source:** listhub *Copyright © 2026 Bright MLS. All rights reserved. All information provided by the listing agent/broker is deemed reliable but is not guaranteed and should be independently verified.* [View on PropertySimple](https://www.propertysimple.ai/listing/9817-mainsail-drive-gaithersburg-md-20879-c2253682) --- ## Structured Data ```json { "@context": "https://schema.org", "@type": "RealEstateListing", "@id": "https://www.propertysimple.ai/listing/9817-mainsail-drive-gaithersburg-md-20879-c2253682#listing", "url": "https://www.propertysimple.ai/listing/9817-mainsail-drive-gaithersburg-md-20879-c2253682", "name": "9817 MAINSAIL Drive, Gaithersburg, MD 20879", "description": "Welcome to 9817 Mainsail Drive! Situated on a half-acre lot, you'll find the best backyard in the neighborhood! The owners have thoughtfully opened up the landscape, creating a spacious, more leveled area rarely found on nearby lots. 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. 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