Coliving Compliance in Montreal: The City Can Buy the Building Instead of You
- Rooming houses under pre-emption
- 101
- City's decision window
- 60 days
- Boroughs covered
- 9
Schemes and fees verified September 2026. Councils change these — confirm on the authority's own page before you apply. Nothing here is legal advice.
The short answer
Montreal protects rooming houses with two instruments that sit either side of a transaction. Several central boroughs prohibit converting a maison de chambres into another form of housing. And since 2022 the City has placed 101 rooming houses under its right of first refusal across nine boroughs — meaning that before an owner can accept your offer, they must notify the City, which then has sixty days to buy the building instead of you.
Montreal is the market where the compliance risk is not in operating the building — it is in acquiring it. The city has been systematically removing rooming houses from the speculative market, and the two instruments it uses are both aimed at the transaction rather than the tenancy.
The first is a conversion prohibition: several central boroughs have banned turning a maison de chambres into another type of housing, which is precisely the move most coliving repositioning plans depend on. The second is the droit de préemption, a right of first refusal that lets the City buy in priority over any other purchaser.
For an operator, the consequence is that a Montreal rooming house acquisition has a step in it that does not exist anywhere else on this site: the City gets to decide whether your purchase happens at all. This page is not legal advice, and a Montreal acquisition needs a Quebec notary and counsel on the specific building.
What applies in Montreal
Right of first refusal (droit de préemption)
RequiredThe droit de préemption allows the City of Montreal to buy in priority over any other buyer certain buildings or land in order to carry out projects for the benefit of the community. An owner must send the City a notice of intention to alienate the building before accepting an offer. The City then has sixty days to decide whether to purchase. If it does not respond within that period, the sale proceeds without the right being exercised.
- In force ·
- 60-day decision window from the notice of intention to alienate
Rooming houses designated under the right
Check before you buySince 2022 the City has subjected 101 rooming houses to the right of first refusal across nine boroughs: Côte-des-Neiges–Notre-Dame-de-Grâce, Sud-Ouest, Mercier–Hochelaga-Maisonneuve, Montréal-Nord, Plateau-Mont-Royal, Rosemont–La Petite-Patrie, Verdun, Ville-Marie and Villeray–Saint-Michel–Parc-Extension. Where the City exercises the right, the building typically transfers to the Société d'habitation et de développement de Montréal or to a non-profit.
Conversion prohibition in central boroughs
RequiredSince 2020, converting a maison de chambres into another type of housing has been prohibited in several central boroughs — the measure began with six and has been reported since as covering eight. The prohibition also reaches the subdivision of units, closing the route of splitting a large unit into smaller ones. Check the specific borough: this is borough-level regulation, not a single city-wide by-law.
- In force ·
- From 2020, borough by-laws
Demolition authorisation
Depends on addressA demolition authorisation certificate is required where 50% or more of the floor structure and exterior walls are to be demolished, or 25% or more for significant and heritage buildings. In most cases the owner must submit a preliminary reuse programme for the cleared land to a demolition committee before the request is even studied.
Ville de Montréal — Obtenir un permis pour la démolition d'un immeuble ↗
Borough permit counters
RequiredMontreal devolves a great deal to its boroughs, and the City's own advice is to contact the borough permit counter about requirements before starting construction, renovation or demolition work. Two buildings a few streets apart can sit under different borough rules.
Ville de Montréal — Obtenir un permis pour la démolition d'un immeuble ↗
Local trap
The trap: a signed offer that the City can step into
Every other acquisition risk on this site is about whether you can operate what you buy. Montreal's is about whether you get to buy it. If the building is on the pre-emption list, the owner must notify the City before accepting your offer, and the City has sixty days to substitute itself for you.
That is not a theoretical power. The City has been exercising it: it has used the right to take rooming houses out of the speculative market and pass them to the SHDM or to non-profits, and 101 buildings sit under the designation across nine boroughs.
The cost of finding out late is specific and it is not the purchase price — it is everything you spend before the notice goes in. Survey, legal, planning advice, financing arrangement, and sixty days of a team's attention, on a building that then goes to someone else. Our own rule for Montreal, and this is our judgement rather than City guidance: establish the pre-emption status before you commission any paid diligence at all, not before completion.
The second half of the trap catches the operators who clear the first. Even where the City does not buy, several central boroughs prohibit converting a maison de chambres into another form of housing and prohibit subdividing units. A building you are permitted to buy may still be a building you are not permitted to change — and the repositioning is usually the whole investment case.
Before you commit capital in Montreal
- 01Check whether the building is on the City's right-of-first-refusal list before spending anything on diligence.
- 02Assume the sixty-day notice window is real programme time and put it in the transaction timetable, not in a footnote.
- 03Confirm the borough — the conversion prohibition is borough-level and does not apply uniformly across the city.
- 04If the plan depends on converting a maison de chambres to another housing form, establish that it is lawful in that borough before you model it. In several central boroughs it is not.
- 05Check the subdivision position too: splitting larger units into smaller ones is caught in the same measures.
- 06If demolition is contemplated, work backwards from the 50% and 25% thresholds and the demolition committee's reuse programme requirement.
- 07Take advice from a Quebec notary and local counsel on the specific address. The instruments here operate on the transaction itself, which is exactly where local procedure matters most.
Sources
Statutory thresholds link to the legislation itself. Fees and scheme dates were verified September 2026 and change without much notice — the authority's own page is the live record.
- Ville de Montréal — Droit de préemption: priority purchase over any other buyer, notice of intention to alienate, and the 60-day decision window
- Ville de Montréal — Obtenir un permis pour la démolition d'un immeuble (50% and 25% thresholds, demolition committee and reuse programme)
- Radio-Canada — Les maisons de chambres seront protégées dans six arrondissements (the conversion prohibition, the original boroughs, and the subdivision restriction)
Frequently asked questions
Can the City of Montreal really block my purchase of a rooming house?+
It can buy the building instead of you. Where a building is subject to the droit de préemption, the owner must send the City a notice of intention to alienate before accepting an offer, and the City has sixty days to decide whether to purchase in priority over any other buyer. If it does not respond in that window, your purchase proceeds.
How many buildings are affected?+
Since 2022 the City has placed 101 rooming houses under the right of first refusal, across nine boroughs. The list is the thing to check — designation is building-specific, not a general rule about rooming houses.
Can I convert a Montreal rooming house into studios or apartments?+
In several central boroughs, no. A prohibition on converting a maison de chambres into another type of housing has applied since 2020, beginning with six boroughs and reported since as covering eight, and it also reaches the subdivision of units. It is borough-level regulation, so the answer depends on the specific borough.
What happens to a building the City buys under the right?+
It typically transfers to the Société d'habitation et de développement de Montréal or to a non-profit organisation, and stays in the affordable housing stock.
Does any of this apply to a new-build coliving scheme?+
The pre-emption and conversion measures are aimed at existing rooming houses, so a new-build is a different question — one of zoning and borough permits rather than of protection instruments. But Montreal devolves heavily to its boroughs, so start at the borough permit counter rather than with a city-wide assumption.
The market
Coliving in Montreal — costs and neighbourhoods →
The national picture
Canada market dossier →
Other cities
Why we publish this
We wrote this because the licence decides what your building is allowed to be before any marketing question exists — and we have had to work that out, city by city, for the operators we grow.
StartColiving is a marketing and advisory team working only in coliving — 18+ brands over 8+ years, plus a marketplace of our own. The research on this site is free and stays free; it is how we show our working rather than a lead magnet with a form in front of it.