One-of-a-kind Carriage House in a desirable Arlington location is available for the first time in decades! Use as a 2-family or as a single-family w/ accessory apt. Complete w/ 2-story turret, it was built as the carriage house to the historic Henry Hornblower house at 100 Pleasant St. Great curb appeal & privacy - flowering perennials line the driveway & welcome you. Pass through a skylit entry to the vast living room w/ wood stove insert & stunning high, wood-beamed ceiling. Hardwood floors start here & continue throughout. The big, updated peninsula kitchen has stainless appliances & retains a charming built-in cabinet. We love the adjacent dining room on the 1st floor of the turret, w/ wainscoting & French doors to the living room. 2 bedrooms w/ large windows on this level. 3rd bedroom is upstairs plus a loft w/ expansion potential. Rental income potential from 1 bed apt, w/ separate entrance via stairs to the roof deck w/ views of Spy Pond & Boston beyond through the trees!