The small Post-War 1  1/2-Storey House The 1  1/2-storey house is common in certain areas of Ottawa built during WWII and the era immediately afterwards. These houses can be found throughout the city, but larger concentrations include the following areas: Carlington, Courtland Park, Carleton Heights, Meadowlands/St. Claire Gardens, Alta Vista, Overbrook, Eastview, Vanier, Elmvale Acres and Queensway Terrace.  The 1  1/2-storey house actually has older roots in European architecture and early North American housing. The style was re-born by Wartime Housing Limited during WWII to fill a need during a housing shortage and were meant to be temporary. The design is economical to build, versus a full 2-storey house, and in some cases the second floor can be left unfinished for future expansion. Here is a link to a NFB short film on the wartime houses:  Wartime Housing   Below are the 3 basic plans Wartime Housing Limited built in communities across Canada - one of which was a 1  1/2-storey