What: A three-level, tower-like addition on the back of a 1920s cottage along Minnehaha Creek in Minneapolis.

Size: The 1,100-square-foot addition includes a new kitchen, master bedroom and bath, and a lower-level playroom.

Design team: Architects Christine Albertsson and Todd Hansen, Albertsson Hansen Architecture, Minneapolis; www.aharchitecture.com; 612-823-0233.

Builder: Choice Wood Company, St. Louis Park.

Go online: See a photo gallery at startribune.com/homes.

The Home of the Month appears in the Sunday Homes section the first Sunday of every month. The program, a partnership between the Star Tribune and the Minnesota chapter of the American Institute of Architects, features architect-designed houses selected by a jury of experts. The houses represent a range of prices, styles and locations.