Do not miss the opportunity to acquire 13 Knowlton Street, a well-maintained residence situated on a quiet, tree-lined street and full of charm! This property is ideally located just steps from the East Somerville Green & Bus Line and offers convenient access to Assembly Square, Bunker Hill Community College, shopping, the Encore Casino, Mass General, downtown Boston, and major highways. This two-and-a-half-story home presents a perfect ADU opportunity for investors and owner-occupants alike to enter this vibrant, growing community. The property consists of two sunny units: the first-floor unit features two bedrooms and a recently renovated full bathroom, while the second-floor unit provides two levels of living space, offering four bedrooms, a first-level full bath, and a wonderfully large kitchen with exceptional views of the Boston skyline. The basement level is equipped with a radon mitigation system and a laundry room featuring dual washers and dryers. The area retains original plumbing from a previous bathroom and includes two additional rooms. Given the current ADU regulations, this space presents a significant opportunity for integration into the first-floor unit as an in-law suite, further complemented by an existing, private side entrance out to the driveway. We recommend that interested parties conduct their own due diligence regarding potential conversion.. The exterior features a quaint side entry patio, along with a two-car driveway and a detached garage, providing off-street parking and additional storage. Come bring this gem to its full potential! Both units will be vacant as of August 31, 2026. Showings require 48 hours' notice for tenants and pets.