Commercial renovation costs vary more than residential ones — a quiet professional office, a high-traffic retail store, and a commercial kitchen have very different mechanical, electrical, and finish requirements, even at the same square footage. Here’s what actually drives the number on your quote.
The biggest cost driver: scope, not square footage
Two spaces the same size can cost very differently to renovate depending on what’s involved:
- Cosmetic refresh — paint, flooring, lighting fixtures, minor millwork — is the lowest-cost tier, with no structural or systems work.
- Mid-scope tenant improvement — new partition walls, updated electrical and lighting, some mechanical changes — sits in the middle.
- Full gut renovation — new HVAC, electrical service upgrades, plumbing (critical for restaurants and medical spaces), structural changes, and a full change-of-use permit — is the highest-cost tier, often by a wide margin.
Before you can budget accurately, you need to know which of these your project actually is — and that usually requires a site visit, not a square-footage estimate alone.
What pushes costs higher in a commercial project
- Mechanical and electrical upgrades — older GTA commercial buildings often need electrical service upgrades or new HVAC zoning to support a new use, especially for restaurants and medical/dental spaces
- Plumbing for food service — grease traps, additional fixtures, and venting add significant cost to restaurant and café buildouts
- Fire and life safety systems — sprinkler modifications, fire separation work, and exit changes required by a change of use
- Accessibility upgrades — AODA-compliant washrooms, entrances, and clearances if the existing space doesn’t already meet current code
- Landlord requirements — many commercial leases specify finish standards, approved contractor lists, or base-building restoration obligations at lease-end, which affect both scope and cost
Where businesses commonly under-budget
The most common budgeting mistake isn’t the renovation itself — it’s underestimating permit timelines, mechanical/electrical surprises behind existing walls and ceilings in older buildings, and landlord-driven requirements that aren’t obvious until a lease is reviewed in detail. Building in a contingency, and getting a contractor involved before a lease is signed, avoids most of these surprises.
Getting an accurate number
Because commercial renovation costs depend so heavily on existing building conditions, intended use, and landlord requirements, a reliable estimate comes from a site visit and a clear scope — not a generic per-square-foot rule of thumb. At NEVACO BUILD, we walk the space, review your lease requirements where relevant, and provide a detailed, fixed-scope estimate before work begins, so you’re budgeting against real numbers, not guesses. Book a free consultation to get a project-specific estimate for your office, retail, or restaurant renovation anywhere in the GTA.
Frequently asked questions
What’s the difference between a cosmetic refresh and a full commercial renovation in terms of cost?
A cosmetic refresh (paint, flooring, fixtures) is the lowest-cost option with no systems work. A full renovation involving new HVAC, electrical, plumbing, and a change of use costs substantially more and takes longer to permit.
Why do restaurant and medical space renovations typically cost more than office renovations?
They require specialized plumbing, ventilation, and fire/life safety systems that standard office space doesn’t need, plus stricter code compliance for their occupancy type.
Can my landlord affect my renovation budget?
Yes. Many commercial leases specify finish standards, approved contractors, or restoration requirements at lease-end — all of which should be reviewed before finalizing a renovation budget.