It’s the first question on most renovations: do I actually need an interior designer, or can I just work with a contractor? Here’s a straight answer — when a designer earns their fee, when you might not need one, and what changes if you skip it.
The short answer
If your renovation involves moving walls, a new kitchen or bathroom, custom millwork, or more than one room at once — yes, a designer pays for themselves. If you’re doing a like-for-like swap (same layout, off-the-shelf finishes), you may not need one. The line is complexity: the more decisions and trades involved, the more a designer saves you.
When you really do need one
- You’re changing the layout. Moving walls, relocating plumbing, opening up a floor plan — these are decisions that are expensive to undo. A designer plans them once, on paper, before a wall is touched.
- It’s a kitchen, bathroom, or whole home. These have the most moving parts — cabinetry, stone, tile, lighting, fixtures, trades in sequence. That’s exactly where a coordinated plan prevents costly mistakes.
- You want it to feel finished, not just done. Proportion, light, materials that work together — that’s the difference between a renovation and a home that looks considered.
- You don’t have time to manage it. Sourcing, ordering, scheduling trades, catching problems early — a designer (or a design-build studio) carries that for you.
When you might not
A single-room refresh with the same layout, a coat of paint, or swapping a vanity for an identical one — you can often handle these with a good contractor and a clear idea. A designer is about decisions and coordination; if there are few of either, you may not need the full service. Even then, a one-time consultation can be worth it to get the big calls right.
What a designer actually saves you
The cost of a designer is almost always smaller than the cost of getting the renovation wrong. A plan that’s right the first time means walls aren’t moved twice, the right finishes are ordered once, and trades aren’t left waiting on a decision — that’s where renovations quietly save or waste money. The most expensive renovation is the one you have to redo.
How Studio Kimi works
Our base is a flat design fee set from your home’s square footage — one clear number, agreed before any work starts. Depending on the scope, we tailor the approach to suit the project, and as a design-build studio we can carry the whole thing from first sketch to final walk-through. We work across Mississauga, Oakville, Burlington and the wider GTA.
Not sure which side you’re on? We’ll tell you honestly whether your project needs a designer — and what it would involve.
Common questions
Do I need an interior designer for a small renovation?
Not always. If you are keeping the same layout and swapping in off-the-shelf finishes, a good contractor and a clear idea are often enough. A designer earns their fee once the decisions and trades start to add up — a new layout, a kitchen or bathroom, custom millwork, or more than one room at once.
Can’t my contractor handle the design?
A contractor builds well, but design is a separate skill: space planning, proportion, how materials and light work together, and sequencing the trades so nothing is done twice. On a straightforward job that gap is small. On a layout change or a new kitchen or bath, setting the plan on paper before a wall is touched is what keeps the budget and the result under control.
Is an interior designer worth the cost on a renovation?
On a complex project, usually yes. The fee is small next to what a wrong layout, a mis-ordered cabinet, or a finish that has to be redone can cost. A designer’s value is decisions and coordination made once, correctly. Where there are few decisions to make, that value is smaller and you may not need the full service.
Should I hire the designer before or after the contractor?
Usually before. The design and drawings come first, so every contractor prices the same clearly defined scope, which is the only way to compare quotes fairly. In a design-build studio the two are handled together, which closes the gap between the plan and the build.
Ready to start?