1417 21ST Street S Welcome to this beautifully updated Arlington Ridge home, where thoughtful design meets modern convenience in an unbeatable location. Inside, you'll find two primary suites-a RARE main level primary plus a second upstairs primary with a newly renovated spa-like bathroom-perfect for multi-generational living, guests, or flexible lifestyle needs. The upper level also offers three additional bedrooms (for a total of 4 upstairs bedrooms!), while hardwood floors flow throughout both levels, including brand new flooring on the main level (2022). The heart of the home is the open-concept kitchen with center island seating, seamlessly connected to the dramatic great room featuring vaulted ceilings and sliding doors leading out to a massive deck. From there, step into your private outdoor retreat: a hardscaped patio with a walkway connecting from the front of the house, a serene pond-less waterfall, and custom outdoor lighting-all perfect for entertaining or relaxing. Plus, you'll enjoy the convenience of the installed irrigation system. The lower-level recreation room with cozy gas fireplace offers an additional space for movie nights or game days. Recent updates add peace of mind for the next owners, including a new roof (2022), new basement/main level HVAC (2021), new dishwasher (2022), new laundry machines (2025), and an attached 1-car garage with EV plug. Location, Location, Location! An easy pedestrian friendly 1 mile to Pentagon City AND Crystal City Metros where you'll also enjoy shopping, dining, and groceries (including Whole Foods). Commuting is a breeze with easy access to the Pentagon, Amazon's new National Landing HQ2, the Virginia Tech Innovation Campus, and I-395. This gem is truly move-in ready-offering spacious living, modern upgrades, and a lifestyle of convenience.