Services
Design-build services
Tenant Improvements & Commercial Renovations in Greater Montréal
A tenant improvement runs against a clock you don't fully control — your lease, your landlord's base-building rules, and an opening date that's already costing you rent. TI is turning a leased commercial space into one that's ready for business, on schedule and with minimal disruption. The constraints are as much contractual and operational as they are structural.
Working inside the lease, not around it
Quebec commercial leases are heavily negotiable, and most push fit-out work, operating permits, and the occupancy certificate onto the tenant. We review the premises against your lease and the landlord's base-building requirements up front, so the design fits what you're actually allowed to do — and flag anything, like a change of use or a new occupancy certificate, that triggers extra Building-Code requirements before it surprises the schedule. The permit and occupancy-certificate process is covered step by step in our guide to commercial building permits in Montréal.
Phased around an operating business
For a space you're already running in — en milieu occupé — we phase demolition and build-out to protect operations and the opening date.
What's included
One team carries all of it, from fit-out design through construction, under a single contract. If you're weighing that against hiring a designer and tendering the build separately, our comparison of design-build and the traditional route lays out when each makes sense.
- Fit-out design and space planning
- Demolition, reconfiguration, and build-out
- Landlord and base-building coordination
- Permits, drawings, and code compliance
- Finishes, millwork, and FF&E
- Phasing to minimise disruption
Where we do this work
We carry out tenant improvements across Greater Montréal. Permit rules and review steps differ from one borough or municipality to the next, so each area page covers how projects run there.
The in-house difference
Designed to your opening date
Because we design the fit-out in-house, we design to your opening date and your base-building constraints from day one — not to an ideal layout that later has to be cut down when the landlord's rules or the existing services get in the way. The plan is built around the real box you're leasing, so the build doesn't stall re-solving problems the design should have caught.
Frequently asked
Tenant Improvements — your questions, answered.
In a commercial lease, is the landlord or tenant responsible for permits and fit-out?
It depends on your lease. Quebec commercial leases are highly negotiable, and most shift responsibility for fit-out work, operating permits and the occupancy certificate onto the tenant, while the landlord retains the building structure and base systems. Read the improvement, permit and as-is clauses carefully — and clarify who funds and who applies — before signing, because the default rules can be overridden.
Do I need a permit to renovate or fit out a leased commercial space?
Often, yes. Even in an existing shell, a building permit is generally required when work touches partitions, exits, plumbing, HVAC, fire-rated assemblies or the occupancy classification; simple cosmetic refreshes may not. The work must meet the current Construction Code, and an RBQ-licensed contractor must perform licensable work. Requirements vary by borough, so confirm scope with the municipality before construction.
Do I need a new certificate of occupancy to open my business in the space?
Likely yes. In Montréal an occupancy permit (certificate of occupancy) is required to run a commercial, industrial or professional activity in a space. A new certificate is needed when the operator changes, the floor area is altered, or the activities change or are added. A change of use can also trigger additional Building Code requirements the previous occupancy didn't face.
Can my business stay open during the fit-out?
Often, yes, depending on the scope. In an occupied space the work is phased by zone, work areas are separated with temporary partitions and dust control, and required exits and fire protection are kept in service as the code requires. Noisy or dusty work can be scheduled outside business hours where the lease and the building allow it. Some tasks, such as tying into the building's sprinkler, fire alarm or electrical systems, may still need a short shutdown. Whether and how you can stay open is set at the consultation, once the scope is known.
Who handles the landlord's approvals and plans?
Commercial leases usually require the landlord's written approval of the tenant's plans before work starts, and many landlords have their own fit-out criteria, insurance requirements, and designated contractors for base-building systems such as sprinklers or fire alarms. We prepare the drawings, submit them through the landlord or property manager, and coordinate any revisions they ask for. Final approval rests with the landlord, so it's worth confirming their process and review time early.
Is there a tenant improvement allowance, and how does it work?
Some leases include a tenant improvement allowance: an amount the landlord contributes toward the fit-out, usually paid against invoices or on completion. Whether there is one, how much it is, and what it covers are negotiated in the lease, so it's worth settling before you sign. We can provide the cost breakdown and documentation landlords typically ask for to release it.
Start a project
Have a space in mind? Let's design and build it.
Tell us about your project — commercial, retail, or residential — and we'll walk you through what design-build can deliver. Consultations across Greater Montréal.
Direct
(514) 697-1742info@indesignconstruction.caService area
- Montréal
- South Shore / Rive-Sud
- North Shore / Rive-Nord
- Laval
- Vaudreuil-Soulanges
- West Island

