Welcome to 48 River Heights Dr., a true masterpiece located in beautiful North Smithtown! This luxurious home has been custom-designed, built, and renovated in 2007 and 2025 by the current owner. Luxury and functionality depict this beloved home. This home is turnkey ready and waiting for you to make your cherished memories in this very special home! (5) Bedroom (4) Bath & Office 4,800 SF - IG Pool - Flat 0.52 Acres Chef’s Kitchen (2 dishwashers), Butler’s Pantry, Great Room, Dining Room, Master Bedroom Suite, Laundry Room (2 washers 2 dryers), Office, (3) Custom Baths, Cedar Closet, Newly finished Basement, Hardwood floors throughout, ALL BRAND NEW!! (2025): Brand new driveway with Belgian block apron and edging Pool liner, granite slab pool coping, 24x24 Italian porcelain pavers surrounding pool and walkways, granite slab and cultured stone sitting wall, (3) pier mount lighting fixtures, granite slab gas fire pit, and granite slab steps Finished basement: wall-to-wall carpet