The By-law for a Diverse Metropolis sets out various obligations around housing. Real estate developers must contribute to Montréal’s supply of social, affordable and family housing. Here’s how to use our contribution calculation tool.
A contribution is required for all projects whose residential area is greater than 450 m2. This applies to both residential and conversion projects (such as converting a commercial building to a residential building) that involve adding at least 1 dwelling.
Social, affordable and family housing contributions depend on two factors:
- Project location (value area, affordable housing zone)
- Project scope (residential area, number of housing units)
How to use the tool
There are two ways to search: by lot number and by area.
Search by lot number
If you know the lot number(s) where the project will be built, this is the most effective search method. Once the calculation tool identifies one of your project’s lots, it will determine the area and zone in which the lot is located.
For information about your social, affordable and family housing contributions, just enter a lot number and specify the total residential area along with the number of dwellings.
Search by area
If you don’t know the lot number, you can select the value area in which the project will be located.
Areas are numbered from 1 to 5 and are used to calculate social, family and affordable housing contributions. Area 5 is divided into two zones, one of which is exempt from the private family housing contribution.
If the project’s location is in more than one value area, the financial contribution is calculated according to the area for which the amount is higher.
Area 5: Exemptions from the private family housing contribution
Area 5 is divided into two zones: 5A and 5B.
- Zone 5A is the part of area 5 that is not exempt from the private family housing contribution. It is composed of the most central neighbourhoods in this area as well as part of Zone 5B that is within a 1 km radius of stations on the Réseau express métropolitain (REM).
- Zone 5B is the part of area 5 that is exempt from the private family housing contribution. Its existing supply already includes many large projects, and consists of Rivière-des-Prairies–Pointe-aux-Trembles and L’Île-Bizard–Sainte-Geneviève as well as parts of Pierrefonds-Roxboro, Saint-Laurent and Lachine.
Affordable housing zones
Some areas include affordable housing zones. In these zones, the by-law requires a contribution that corresponds to a percentage of the project:
- Affordable zone 1 (10 per cent):
- There is no affordable zone 1 at this time
- Affordable zone 2 (20 per cent):
- North of L’Île-des-Soeurs in Verdun
- The Hodge/Jules-Poitras areas in Saint-Laurent
Other zones will be added over time as the urban development plan is amended.
Outside these zones, only projects with an area greater than 4,500 m2 are subject to the affordable housing contribution.
Once you’ve identified the area or lot number, you must provide information about the scope of the project.
The residential area corresponds to the total area of all floors, including common areas such as mezzanines, stairways, elevators and entranceways. It does not include commercial spaces, parking lots and parts of the basement that are not occupied by housing units or parts of housing units. Only projects with an area greater than 450 m² are subject to the by-law.
The number of dwellings is used to calculate the family housing contribution. Only residential projects with at least 50 dwellings must contribute to private family housing.