21 Keystone Dr
Welcome to this beautifully updated Gaithersburg home, ideally located near Seneca Creek State Park and Clopper Lake, Rio, and Downtown Crown, with convenient access to shopping, dining, recreation, and major commuter routes. Extensive improvements completed in 2019 include replacement of the plumbing, electrical updates, a new HVAC system, driveway, roof with new plywood and shingles, and exterior walls upgraded with new plywood, siding, and trim. All bathrooms were fully renovated in 2019. Gas line was installed in 2019 that connects water heater, stove and back yard grill. The outdoor spaces are designed for everyday enjoyment, featuring backyard stonework and a porch completed in 2019. A storage structure was added in 2022, along with artificial turf and fencing. The basement offers additional possibilities, with rough ins behind the wall for a future wet bar and laundry area. The water heater will be replaced. A move-in-ready home with significant updates in a prime Gaithersburg location!
Listing Information
Facts & Features
Location
Community Information
Architecture
Features & Amenities
Property Features
Square Footage
Tax & Financial Information
Schools
Roberto W. Clemente Middle
Northwest High
Quince Orchard High
Jones Lane Elementary
Diamond Elementary
Ridgeview Middle
DuFief Elementary
Thurgood Marshall Elementary
School ratings are provided for informational purposes only and are subject to change. Attendance boundaries are for reference only — contact the school or district directly to verify enrollment eligibility.
Historical Data
Price History
| Date | Event | Price |
|---|---|---|
| 10/01/2026 | Listed for sale | $900,000 |
Listed by Piedad Suarez · Spring Hill Real Estate, LLC. · 7038914514
Listing information provided exclusively for consumers' personal, non-commercial use and may not be used for any purpose other than to identify prospective properties consumers may be interested in purchasing. Information deemed reliable but not guaranteed by the MLS. Copyright 2026, Bright. All rights reserved.
Last Updated: October 23, 2026 at 8:11 PM | Source: Bright | MLS#: MDMC2258154
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