Primary Structures

MPAC classifies all structures that exist on a property by assigning a structure code to describe the design or type of residential structure. The primary structure refers to the house(s).

The following is a list of some typical primary structure codes found on residential properties.

Common Primary Structure Codes

Structure Code Structure Code Description
301 Single family detached home
302 Single family semi-detached - two residential homes sharing a common center wall with separate ownership
303 Single family row house or townhouse - more than two units in a row with separate ownership
304 Link home (detached) - homes linked together at the footings or foundation by a wall(s), either below grade or at their garages
305 Link home (semi-detached) - homes linked together at the footings or foundation by an above grade wall(s)
350 Condominium single family detached
351 Condominium single family semi-detached - two condominium units sharing a common center wall
352 Condominium apartment, in a walk-up
353 Condominium apartment, in a medium/high-rise
354 Condominium row house or townhouse - more than two units attached in a row

Other Primary Structure Codes

Structure Code Structure Code Description
310 Mobile home
322 Duplex - typically one self-contained unit on the first floor and another self-contained unit on the second floor
323 Triplex - three self-contained residential units
324 Fourplex - four self-contained residential units
325 Fiveplex - five self-contained residential units
326 Sixplex - six self-contained residential units
355 Condominium stacked townhouse - one unit on top, one unit on bottom, townhouse style
399 Unspecified residential structure

If your structure code is not listed here, contact the Customer Contact Centre at 1-866-296-6722.

Note: The applicable law prevails to the extent there is any conflict between this information and the current law. This information is not intended to provide legal advice and should not be relied upon as such.