Most homeowners call a contractor first. It makes sense on the surface, since the contractor is the one holding the tools. But the order you hire in affects your budget more than almost any other decision you make, and calling the wrong person first is where renovations quietly go sideways.
What each professional actually does
An interior designer works on the plan. That means measuring and drawing your existing space, testing layout options, sizing cabinetry and millwork, planning lighting and electrical positions, selecting finishes, and pulling all of it into a set of documents. The designer also flags when you need an architect or a structural engineer, which happens more often in Montreal’s older housing stock than people expect. The output is a package a contractor can price accurately.
A general contractor builds. They hold an RBQ licence, hire and manage the subtrades, order materials, handle site logistics, and carry a warranty on the work. Good general contracting services in Montreal also include permit coordination with your borough and scheduling around inspections. What a contractor does not typically do is decide where your island should go or whether a 24-inch drawer bank beats a pantry pull-out.
A design-build firm handles both under one contract. One team draws it, one team builds it, and there is one phone number to call when something is not right.
The problem with calling a contractor first
Contractors price what is in front of them. If what is in front of them is a rough idea and a few phone photos, you get a rough number. Some pad it heavily to protect themselves. Others quote low and recover the difference through change orders once the walls are open.
The bigger issue is comparison. When three contractors quote from three different mental pictures of your project, the numbers are not comparable. One assumed you were keeping the plumbing where it is. One assumed IKEA boxes with custom doors. You end up choosing based on a price that describes three different renovations.
A drawing set fixes this. Same scope, same specs, same allowances, real apples-to-apples pricing.
Start with an interior designer when
You are changing the layout. Moving a sink, relocating a wall, converting a bedroom into a walk-in. Anything that touches plumbing stacks or structure needs to be resolved on paper before anyone swings a hammer.
The room is complicated per square foot. Kitchens and bathrooms pack the most decisions into the least space. If you are reworking either one, kitchen design in Montreal and bathroom design in Montreal are worth planning properly, because a bad appliance clearance or a poorly placed vanity is expensive to undo. The same logic applies to storage, where custom closet design usually recovers more usable space than homeowners expect from a room that never gets a second thought.
You have a budget but no plan. A designer can tell you what $60,000 buys in your specific condo before you find out from a contractor’s invoice.
You live in a condo. Syndicate approval often requires drawings, and getting them after your contractor has booked the work is a good way to lose your slot.
A general contractor first is fine when
The scope is genuinely fixed and nothing moves. Replacing a roof, swapping windows for the same openings, redoing flooring throughout, repointing brick. If there is no layout decision to make, a designer adds cost without adding much.
Emergencies also skip the queue. Burst pipe in February, water through the ceiling, insurance claim open. Call a contractor, stabilize the situation, plan the rebuild after.
Design-build makes sense when
You want one contract and one accountable party. Nobody enjoys refereeing between a designer who says the drawing was clear and a contractor who says it was not. Design-build also tends to compress the timeline, since pricing feedback happens while the design is still flexible instead of after it is finalized.
The trade-off is that you are committing to one firm’s aesthetic and its build quality at once, so vet both sides before you sign.
What is different about renovating here
Montreal’s building stock skews old. Plateau and Rosemont triplexes from the 1910s and 1920s frequently have load-bearing masonry party walls, undersized joists, and framing that was never square to begin with. Opening a wall in one of those is not a same-day decision, and it usually needs an engineer’s stamp before the borough will issue a permit.
Permits are issued at the borough level, not city-wide, so timelines and requirements vary by neighbourhood. In Laval and the surrounding suburbs, the housing is newer and more of it is detached, which makes layout changes cheaper and permitting simpler.
Then there is scheduling. The construction holiday shuts down most of the industry for two weeks at the end of July, and demand spikes hard in spring. If you want work done in May, you should be designing in January. Winter is actually a reasonable time to run an interior project, since exterior trades are slower and availability improves.
A sequence that works
- Set a realistic budget range, including 15 percent for surprises in an older building.
- Bring in a designer, or a design-build firm, to develop the plan and confirm feasibility.
- Tender the drawings to two or three contractors.
- Confirm the RBQ licence number, liability insurance, and CNESST registration for whoever you select.
- Agree in writing on the payment schedule and how change orders get approved before work starts.
That fourth step takes ten minutes and prevents most of the horror stories. If you are not sure which category your project falls into, a short conversation usually settles it. You can see the full range of our design and general contracting services and get a straight answer about whether your project needs a full design phase or just a good builder.