Welcome to 11 Dorset your Hamptons beach community retreat in the exclusive Roses Grove section of Southampton. Tucked away at the end of a 300-foot driveway, this expansive 3,358 sq ft traditional cedar-shingled colonial offers 4+ bedrooms and 5 full bathrooms. Situated on a secluded 1.05-acre lot with mature landscaping and native trees, the property is bordered to the west by a protected reserve between you and the waterfront just 900 feet away. Close to Peconic Bay Beach or enjoy the 40' by 20' saltwater solar-heated pool. The 600 sq ft cedar deck overlooking the pool is perfect for grilling, outdoor dining, or enjoying happy hour. On cool East End evenings, unwind by the firepit, free from the disturbance of neighbors or street traffic. The sprawling first floor features a large living room, a family room with a fireplace, a formal dining room, and a bedroom/sunroom. There are also 2 full bathrooms and a laundry room. The lovely eat-in kitchen is a chef's dream, equipped with custom cabinets, Brazilian Mont Blanc quartzite countertops, a 36" Fisher & Paykel cooktop, a 30" Dacor double oven, a 48" Sub-Zero fridge, a Bosch dishwasher, and a GE Profile microwave. Upstairs, the second floor offers 3 ensuite bedrooms. The spacious primary bedroom includes a fireplace and a 325 sq ft cedar deck with water views. The primary bathroom boasts a double shower and a 2-person Jacuzzi soaking tub. This home is equipped with a new 3-zone HVAC system and an upgraded oil furnace with a 550-gallon tank in the basement. The driveway provides ample parking for six cars. All flooring throughout the house is either red oak or Italian travertine tile. One of the property's standout features is its potential for expansion. Architectural plans have been drawn up, complete with approved NYS and Southampton Township Environmental permits, for a 2-car detached garage. The 1,800 sq ft unfinished basement, which runs the full length of the house, has 10' ceilings, rough-in for a full bathroom, and 2 walk-out sliding glass doors. There are also drawings available for finishing this space. Additionally, there is a full-length attic with high ceilings and windows. This special, never-rented retreat offers a versatile layout with the potential to capture substantial additional square footage and truly make it your own. Best of all, the annual taxes are just $5,700 per year! Don't miss the opportunity to own this hidden gem, where timeless charm, modern amenities, and endless potential converge in one of Southampton's most sought-after locations.