136 McCarthy Tucked away on a quiet dead-end street in the heart of Great River, this beautifully maintained 3-bedroom, 2-bath Colonial offers an exceptional combination of privacy, comfort and indoor-outdoor living - with annual property taxes of just $13, 047. Built in 2002 and surrounded by mature trees, the home welcomes you with beautiful curb appeal and a full-length front porch perfect for relaxing and enjoying the peaceful setting. Inside, sun-filled living spaces feature soaring ceilings, hardwood floors throughout, a formal dining room, gas fireplace and an updated eat-in kitchen with brand-new granite countertops and natural gas cooking. A spacious three-season room extends the living space and opens to a Trex deck overlooking a beautifully finished backyard designed for easy, low-maintenance enjoyment. The outdoor space features professionally installed turf, updated landscaping and a clean, polished setting that stays attractive with minimal upkeep - ideal for entertaining, relaxing or simply enjoying the outdoors without the constant maintenance of a traditional lawn. The finished lower level offers additional flexible space for a den, home office, gym or recreation area. Recent improvements include conversion to natural gas, updated flooring, granite countertops, landscaping and exterior enhancements. Conveniently located near Timber Point Country Club and Connetquot River State Park Preserve, and within the East Islip School District, this move-in-ready home is a special opportunity in one of Long Island's most desirable South Shore communities.