North American Product Classification System (NAPCS) Canada 2012 Version 1.1
- 621 - Residential buildings
- 62111 - Residential buildings
- 621111 - Residential buildings of five and more storeys
- 6211111 - Residential buildings of five and more storeys
- 621112 - Residential buildings of fewer than five storeys
- 6211121 - Single-detached houses
- 6211122 - Semi-detached houses
- 6211123 - Townhouses
- 6211124 - Duplexes and triplexes
- 6211125 - Residential buildings or residential mixed with other use, of four or more units, of fewer than five storeys
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