North American Product Classification System (NAPCS) Canada 2017 Version 1.0
- 621 - Residential buildings
- 62111 - Residential buildings
- 621111 - Residential buildings of five or more storeys
- 6211111 - Residential buildings of five or 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 of fewer than five storeys, n.e.c
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