Tucked away on a quiet one-way street in the heart of North Arlington's highly coveted Cherrydale neighborhood, 4045 21st St N offers the rare combination of like-new construction, timeless design, and exceptional versatility. Rebuilt from the foundation up in 2019 with a thoughtfully designed bump-out addition, this home delivers the feel and functionality of new construction while sitting in one of Arlington's most established and charming communities. Inside, you'll find over 3,400 square feet of beautifully finished living space featuring 4 bedrooms, 4 full bathrooms, soaring natural light, and high-end finishes throughout. The 9.5-foot ceilings on the main level set an immediate tone of openness and volume, while white oak hardwood floors flow continuously across the main level, upper level, and every stair, tying the home together in effortless warmth. Shaker cabinetry, and custom Elfa shelving integrated throughout complete a look that is as functional as it is refined. The gourmet kitchen features marble countertops and was designed for both everyday living and entertaining, complete with premium Wolf appliances, Bosch refrigerator and dishwasher, and seamless flow into the main living areas. A main-level bedroom and full bath with stand-up shower create the perfect setup for guests, a private office, or multigenerational living. Upstairs, the expansive primary suite serves as a true sanctuary, highlighted by a spa-inspired bathroom featuring a double vanity, freestanding soaking tub, and a large walk-in shower. Two additional bedrooms on this level are served by a full hall bathroom also with a stand-up shower and a conveniently located washer and dryer make everyday living as effortless as it is comfortable. The fully finished lower level offers incredible versatility with a private entrance, separate washer/dryer, full bathroom with stand-up shower, kitchenette, and two additional rooms that flex effortlessly as bedrooms, a home gym, media room, or private office ideal as an au-pair suite, guest retreat, or extended family living space. Every major system and upgrade has already been completed for peace of mind, including all-new plumbing, electrical, dual-zone HVAC systems, tankless water heater, metal roof, chimney, decks, water softener, UV air purification, whole-house humidifier, French drain system, sump pump, and integrated surge protection. Fresh interior and exterior paint in 2026 make the home truly move-in ready. The outdoor spaces are equally impressive, featuring professionally designed landscaping, eco-friendly paver driveway with parking for up to 8 vehicles, newly constructed garage, gas line for grilling, and both front and rear gas fire pits that create the perfect setting for relaxing or entertaining year-round. The location is truly unparalleled, offering a unique opportunity to enjoy suburban tranquility with effortless urban convenience. Situated on a quiet one-way street, you are just a short walk from Lee Heights shopping center for your daily needs, along with beloved local favorites including Arrowine & Cheese, Lebanese Taverna, Pastries by Randolph, Livin' the Pie Life, Caf Colline, and UPS. When it's time to commute, enjoy easy access to I-66, nearby ART bus routes, and the Ballston Metro less than a mile away, making travel to Washington D.C., Tysons Corner, and the airports incredibly convenient. From weekends at the Cherrydale Farmers Market to the endless parks, dining, and entertainment throughout North Arlington, everything you need is right at your doorstep. This home is truly move-in ready simply unpack and start enjoying the very best of Arlington living.