Commercial Renovation Permits in Montreal, Dorval and the West Island: 2026 Guide

A commercial renovation permit in Montreal can affect when a business signs a lease, starts construction and opens its doors. The challenge is that permit fees, required documents and review periods are not identical across the Island of Montreal. A project in a Montréal borough may follow different rules from a project in Dorval, Pointe-Claire or another demerged municipality.

This 2026 guide gives business owners, tenants, property managers and investors a practical starting point for planning a commercial renovation. It compares current municipal information, explains when architects or engineers may be required and identifies the decisions that can prevent avoidable delays.

Commercial renovation permit: the quick answer

Many commercial projects require municipal authorization before construction begins. The answer depends on the municipality, the proposed use, the building and the nature of the work. Painting or replacing finishes may be treated differently from moving partitions, changing exits, modifying plumbing or ventilation, altering the structure or changing the occupancy of a space.

Before committing to a construction date, confirm four points:

• Is the proposed business use permitted at the address?
• Does the work require a construction or transformation permit?
• Must the plans be prepared or sealed by an architect or engineer?
• Is the property subject to heritage, site-planning or architectural review?

A complete answer normally requires both a review of the space and confirmation from the municipality. Permit requirements should therefore be evaluated during feasibility and budgeting, not after drawings and contractor schedules are complete.

2026 commercial renovation permit fees by municipality

The following figures were checked against official municipal information available on September 17, 2026. They are planning references, not quotations. Municipalities can update their tariffs, request additional studies or charge separate fees for occupation, signs, engineering, public-domain work or architectural review.

Municipality	2026 planning reference	Important note
City of Montréal	$9.80 per $1,000 of estimated work; minimum $491.70 for a commercial, industrial, institutional or mixed-use building.	Additional fees may apply to heritage properties or areas subject to specific architectural standards.
Dorval	$20 per $1,000 for commercial, industrial, institutional and qualifying multifamily buildings.	The current tariff schedule also identifies a $10,000 security deposit and a 12-month permit duration for this category.
Pointe-Claire	$13 per $1,000 of estimated work; minimum $655 for commercial and industrial projects.	Engineering charges, REM-related charges, financial guarantees or site-planning review fees may apply depending on the project.

For Montréal, the estimated project cost used to calculate the permit fee includes items such as plans, labour and equipment, including taxes. The official municipal page also states that application fees are non-refundable. Consult the City of Montréal interior renovation requirements for the latest information.

How long does a commercial renovation permit take?

Timelines begin when the municipality considers the application complete. Missing plans, unclear scope, changes of use and external approvals can restart questions or extend the review.

City of Montréal

Montréal currently publishes an average review period of eight to ten weeks for this type of renovation application after all required documents have been submitted. The City describes this as an indication, not a guarantee. Workload, project complexity and the number of active applications can affect the actual period.

Pointe-Claire

Pointe-Claire’s 2026 commercial permit information states that a compliant project may be approved within 30 days after the file is complete. A project subject to site planning and architectural integration review, commonly known as PIIA or SPAIP, can require more time.

Dorval

Dorval requires the applicable information, technical documents and fees before the competent authority processes the request. Because requirements vary with the proposed work and property, applicants should confirm the expected review period directly with Urban Planning rather than building a schedule around an assumed approval date.

For every municipality, a realistic project schedule should include time for preliminary plans, professional coordination, landlord approval, municipal questions, revisions, procurement and construction—not only the published municipal review period.

When is a commercial renovation permit required?

A permit is commonly relevant when a project changes the building or the way a commercial space operates. Examples can include:

• constructing, removing or relocating partitions;
• changing the dimensions or arrangement of rooms;
• modifying exits, doors, stairs or public access;
• altering structural elements or load-bearing walls;
• adding or substantially changing plumbing, ventilation or mechanical systems;
• changing the authorized use or occupancy of a space;
• renovating a façade or modifying exterior openings;
• expanding the building;
• installing commercial signage;
• carrying out work on a heritage property or in a regulated architectural sector.

This list is not exhaustive. In Montréal, certain minor cosmetic work—such as painting, changing flooring, cabinets or counters—may not require the same renovation permit. However, the classification depends on the complete scope and the local rules. Dorval likewise states that its examples are not exhaustive. The safe approach is to submit a clear description of the work to the responsible municipality before construction.

Confirm the permitted use before designing the space

A beautifully designed office, clinic, showroom, restaurant or industrial unit is of little value if the proposed activity is not permitted at the address. Zoning and occupancy should be checked before signing an unconditional lease or investing in detailed drawings.

Dorval, for example, requires a certificate of occupancy before a commercial or industrial space is occupied and treats renovation and signage as separate authorization questions. Montréal also explains that a transformation permit may be required as part of opening a business or obtaining occupancy authorization.

The feasibility review should confirm:

• the current and proposed use;
• occupant load and egress requirements;
• accessibility considerations;
• parking, loading or operational requirements;
• signage permissions;
• landlord and leasehold-improvement responsibilities;
• whether a change of use triggers additional building work.

This step can prevent a tenant from designing a space around an activity that the municipality cannot authorize without major changes.

Commercial renovation permit documents commonly requested

The precise list varies, but a complete commercial renovation permit application may require:

• a completed municipal application form;
• owner authorization when the applicant is a tenant or representative;
• a certificate of location or property information;
• existing-condition and proposed plans drawn to scale;
• floor plans, reflected ceiling plans, elevations and sections where relevant;
• room dimensions, door and window sizes, ceiling heights and finish information;
• locations of exits, life-safety equipment and ventilation components;
• a detailed construction cost estimate including applicable taxes;
• architectural, structural, mechanical or electrical documents when required;
• contractor and RBQ licence information;
• heritage, PIIA or SPAIP submissions when applicable.

Montréal specifically identifies professional-quality scaled plans, cost documentation and relevant elevations and sections among the materials that may be needed. If the work affects the structure, the City requests structural plans signed and sealed by an engineer.

Do you need an architect for a commercial renovation in Quebec?

Not every renovation follows the same rule. Under Quebec’s Architects Act, preparing plans and specifications for the construction, enlargement or modification of a building is generally an activity reserved for architects, subject to statutory exceptions. The answer depends on the building’s principal use, dimensions, number of storeys and the nature of the work.

Interior work can constitute a building modification when it affects regulated building elements. The Ordre des architectes du Québec provides a decision tool for evaluating whether architectural plans and specifications are required.

Spacia is a commercial general contractor, not an architecture firm. When architectural services are required, Spacia coordinates with partner architecture firms whose professionals are members of the OAQ. This keeps design, municipal requirements, technical coordination, budget and construction sequencing aligned while preserving the professional responsibilities established by Quebec law.

When is an engineer required?

Engineering involvement depends on the systems affected. Structural changes generally require engineering review and sealed documents. Mechanical, electrical, civil or fire-protection work may also require specialized design depending on the scope, building and authority having jurisdiction.

Examples include:

• openings in load-bearing walls or structural slabs;
• new rooftop or suspended equipment;
• significant ventilation or plumbing modifications;
• electrical capacity changes;
• stormwater management associated with an expansion;
• work affecting fire separations or life-safety systems.

Quebec also updated the electrical chapters of its Construction Code and Safety Code in March 2026, with transitional provisions. Electrical design and construction should therefore be coordinated against the rules applicable to the project date rather than copied from an older renovation.

Why commercial renovation permit applications get delayed

Municipal review is only one source of delay. Many problems begin before the application is submitted.

1. The business use was never confirmed

The design advances before anyone verifies that the proposed office, clinic, restaurant, retail or industrial activity is permitted.

2. Drawings do not match the existing space

Old landlord plans may omit previous alterations. A site survey can identify differences before professional drawings are completed.

3. The application is incomplete

Missing owner authorization, cost estimates, sections, technical notes or professional seals can prevent the review period from truly beginning.

4. Building systems are considered too late

A layout may look workable until ventilation, electrical capacity, plumbing, fire protection or accessibility is coordinated.

5. PIIA, SPAIP or heritage review is overlooked

Exterior work, signs and properties in regulated areas may require an additional review process and committee or council approval.

6. Construction is promised before approval

A lease commencement date or business opening is announced without adequate time for design, permits, procurement and inspections.

A better pre-construction process

A structured process makes the permit application part of the project strategy rather than an administrative surprise.

1. Define the operational need. Confirm headcount, equipment, workflow, client experience, security and opening objectives.
2. Assess the site. Review existing conditions, base-building systems and known constraints.
3. Confirm use and municipal pathway. Identify occupancy, zoning, permit, signage and special-review requirements.
4. Coordinate the required professionals. Engage architects, engineers and specialists when the scope requires them.
5. Develop plans and a preliminary budget together. Test design decisions against technical feasibility and construction cost.
6. Submit a coordinated application. Include the requested forms, authorizations, drawings and estimates.
7. Respond to municipal questions promptly. Keep one team responsible for tracking comments and revisions.
8. Finalize construction planning. Confirm procurement, phasing, building access and operational continuity while approval progresses.

Spacia’s turnkey commercial construction and design-build approach centralizes these moving parts so the client has one point of coordination.

Can work begin before the permit is issued?

Businesses should not schedule permit-dependent construction to begin before the required municipal authorization has been issued. Pointe-Claire’s 2026 commercial guidance explicitly states that work cannot begin before permit issuance. Dorval similarly requires the appropriate permit or certificate beforehand.

Starting early can create enforcement, redesign, insurance, landlord and scheduling risks. Even demolition can expose concealed conditions that change the approved design. The construction start should be tied to confirmed authorization, final documents and site readiness.

Commercial renovation permit checklist

• Is the intended business use permitted at the address?
• Has the landlord approved the proposed work?
• Has the municipality confirmed the required permits and certificates?
• Are architectural or engineering documents required?
• Is the property subject to PIIA, SPAIP or heritage review?
• Do the drawings reflect verified existing conditions?
• Are accessibility, exits and fire-safety requirements coordinated?
• Are mechanical, electrical, plumbing and structural systems included?
• Does the cost estimate include professional fees, work, equipment and taxes as required?
• Does the schedule include permit review, revisions and inspections?
• Does the contractor hold the appropriate RBQ licence?
• Has construction been phased around ongoing business operations?

Commercial renovation permit FAQs

How much is a commercial renovation permit in Montreal in 2026?

The City of Montréal currently lists $9.80 per $1,000 of estimated work, with a minimum of $491.70 for commercial, industrial, institutional and mixed-use buildings. Additional requirements or fees can apply depending on the property and project.

Is the permit price the same in Dorval or Pointe-Claire?

No. Dorval and Pointe-Claire maintain their own tariffs and procedures. Dorval currently lists $20 per $1,000 for the applicable commercial category, while Pointe-Claire lists $13 per $1,000 with a $655 commercial and industrial minimum.

How long should a business allow for a Montréal permit?

Montréal publishes an average of eight to ten weeks after the required documents are complete, but the period is not guaranteed. Design, professional coordination and responses to municipal comments require additional time.

Does every office renovation require an architect?

No single answer applies to every project. The Architects Act includes reserved activities and exceptions based on the building and work. The scope should be evaluated using current OAQ guidance.

Can a general contractor obtain the permit?

A contractor or project representative may help coordinate and submit documents when properly authorized by the owner. The owner, tenant, professionals and contractor still retain their respective legal and contractual responsibilities.

Does a permit include permission to operate the business?

Not necessarily. A construction or transformation permit, occupancy authorization and sign permit can be separate approvals. Confirm the entire municipal pathway for the proposed business.

Plan the permit, budget and construction together

A successful commercial renovation begins before demolition. The municipality needs a clear, compliant proposal; the business needs a realistic budget and opening date; and the construction team needs coordinated documents that can be built without constant redesign.

Spacia helps businesses, owners and property managers plan commercial renovations across Greater Montreal. We coordinate construction with the required designers, engineers and partner architecture firms, establish a practical project sequence and manage execution through handover.

For budgeting context, read our guide to office fit-out costs in Montreal.

Information notice: Municipal fees and requirements in this article were verified against official sources available on September 17, 2026. They may change, and project-specific requirements can vary by location, use, building and scope. Confirm current requirements with the responsible municipality and qualified professionals before undertaking work. Spacia Construction is a commercial general contractor and does not provide legal or architectural services. Required architectural services are performed by partner firms whose professionals are members of the OAQ.