Primary Structures

The primary structure refers to the principle structure on a property, normally the residence. A primary structure code is used to identify the type and style of a structure situated on a property.

The following is a list of primary structures identified by MPAC found on residential properties:

Primary Structure Codes

Structure Code Structure Code Description
301 Single family detached
302 Single family semi-detached
303 Single family row / townhouse
304 Link home (Linked below grade)
305 Link home (Linked above grade)
310 Mobile home
322 Duplex – Two self-contained units
323 Triplex - three self-contained units 
324 Fourplex - four self-contained units
325 Fiveplex - five self-contained units
326 Sixplex - six self-contained units
350 Condominium single family detached
351 Condominium single family semi-detached
352 Condominium apartment, in a walk-up
353 Condominium apartment, in a medium / high-rise
354 Condominium row / townhouse
355 Condominium stacked townhouse
399 Unspecified residential structure

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.