Rare East Groton Colonial with 5,400 sq ft of flexible living space, including a town-approved in-law / ADU with private entrance. Ideal for multi-generational living, extended guests, remote work, or long-term household flexibility, the home offers connection and privacy minutes to Route 495. The main home features 4 bedrooms and 2.5 baths, a vaulted living room with loft, open dining area, granite kitchen with center island, walk-in pantry, mudroom, private office, spacious primary suite with en suite bath and walk-in closet, renovated bath, second-floor laundry, and oversized family room. The attached first-floor ADU lives like its own single-level residence with 1 bedroom, 1.5 baths, renovated kitchen and bath, dining/living spaces, separate entrance, and connecting mud/entry room. Outside features a professionally landscaped .93-acre yard, composite wraparound deck, paver patio, hot tub, oversized 2-car garage, and generous driveway parking.