Thoughtfully designed & expanded Colonial in sought-after Flagg Hill neighborhood abutting conservation land. The spacious mudroom with radiant heated floors is the 1st of many practical amenities. The heart of this delightful home is an very large, sun-drenched kitchen with a center island, large dining space & a cozy sitting room with wood-burning stove. A bright 1st floor office with cathedral ceilings, heated floor & extensive built-ins overlooking the sprawling yard is a telecommuter's dream. A fireplaced family room, screened porch overlooking large front perennial bed & versatile bonus room complete the main level. Upstairs discover a master suite with private full size bathroom, & 3 additional bedrooms with a shared bath. Enjoy handsome wooden floors, garage for 2 cars, Hardie board siding, direct access to 100+ acres conservation land, great neighborhood, outstanding schools & nearby W Acton village. Excellent commuter location offering easy access to major routes & MBTA rail to Boston