Welcome home to 14 Sweet William Circle, a beautifully maintained one-owner Colonial built in 2000 and tucked on a peaceful circle in a desirable South Nashua neighborhood. Set on over half an acre (0.55 acres), this 4-bedroom, 2.5-bath home offers 3,059 square feet of living space, thoughtful updates, and inviting outdoor living, all wrapped in classic New England curb appeal, mature trees, and a welcoming red front door. Inside, the eat-in kitchen features rich cabinetry, a center island, a gas range, cabinets galore, and stainless steel appliances, flowing easily into a bright family room warmed by a cozy gas fireplace and finished with tile flooring, ideal for both everyday living and entertaining. Additional living and dining space, a convenient half bath and direct entry to the 2 car garage.  Upstairs, four generous bedrooms include a primary suite with an updated en-suite bath showcasing a frameless glass, fully tiled walk-in shower with a built-in bench and niche. A second full bath serves the additional bedrooms, 2nd floor also includes a versatile bonus room.  Step outside to an enclosed three-season porch overlooking the private, wooded backyard, plus a maintenance free deck perfect for grilling and relaxing. The attached two-car garage adds everyday convenience.  Recent updates provide peace of mind, including a new furnace (2020), new AC coil and condenser (2021), newer roof (5 years), and a whole-house automatic standby generator (2021), so comfort and power are never in question.  With its blend of classic style, recent mechanical updates, and versatile living spaces on a private lot, this home is ready to welcome its next owners. Schedule your showing today!  Offer Deadline is 3pm, Tuesday 7/28/2026.