Crape myrtle, holly, a towering oak and maples made for climbing. A dappled landscape thoughtfully designed for lovers of flowering perennials - roses, azaleas and peonies, tulips, lilies and hostas. Open-concept living spaces, an abundance of natural light, custom woodwork throughout, and even a ceiling-mounted G-scale track with electric train. Built-in cabinetry and bookshelves, a staircase with tile risers and heritage newel posts, hidden nooks for study and reading and listening to music, and a wood burning fireplace and handcrafted mantle made for deep winter sleepovers. A backyard deck and patio built for barbeques, smores, and birdwatching. If these are the sparks of joy that spell HOME for you - as they have for the current owners over the past 28 years - then 504 Fillmore Street is a must-see. This completely renovated, meticulously maintained single-family home on more than a quarter acre is a one-of-a-kind treasure. It is move-in ready with 4 spacious bedrooms, each with its own character, and 3 full baths, all upgraded with premium Kohler, Moen and Pfister fixtures; a kitchen with Taj Mahal quartz countertops, a large peninsula, hardwood cabinets and stainless-steel appliances; Anderson and Pella windows; conveniences like a laundry chute, pocket doors and loads of storage; an extra-deep one-car finished garage perfect for both parking and a full workshop; and a 10' x 10' gardening shed. The property is within walking distance of Runnymede Park, the W&OD trail, Herndon's famous farmers market, Friday Night Live summer concerts, and local staples like Jimmy's Old Town Tavern and the Aslin Beer Company, not to mention easy access to the Herndon Community Center and golf course, Reston Town Center, Reston Hospital, Dulles Airport, two Silver Line metro stations and several major commuter routes. This home offers the perfect combination of tranquility and connectivity in one of Northern Virginia's friendliest and most sought-after communities, and all with generous town services and no HOA. MOST RECENT UPDATES include a new garage door and opener, resurfaced and sealed concrete driveway, freshly painted interior, and interior and exterior light fixtures (all 2026); a new roof, hot water heater, front door and brick patio (2025); Energy Star refrigerator (2024) and stove (2023); 2nd bath quartzite countertops (2023); water line (2022); repainted exterior (2021); and quartz kitchen countertops, kitchen flooring and stainless steel appliances (2020-2026).