Office Fit-Out Timeline: From Signed Lease to Move-In

Signing your office lease is not the finish line. It is the point where the real fit-out work begins.

 

Once the lease is signed, your project still has to move through design development, permit drawings, approvals, construction, inspections, furniture installation, technology setup and final deficiencies before your team can actually move in.

 

For a commercial office in Toronto, Mississauga or the wider GTA, the biggest scheduling mistake is treating these stages as separate tasks that can simply happen one after another. They overlap, and decisions made early in the project affect everything that follows.

 

At Sensyst, we've been delivering commercial interiors in the GTA since 1977. Our approach is to establish the scope early, coordinate the design and construction requirements, and keep the project moving toward one date that matters to the tenant: move-in.

 

How Long Does an Office Fit-Out Take?

A typical full turnkey office fit-out at Sensyst requires approximately 6–12 weeks for planning and design, followed by approximately 8–16 weeks for construction and final delivery, depending on the scope and permit requirements. Furniture procurement can run in parallel, with specified commercial furniture commonly requiring 8–12 weeks.

 

That does not mean every office fit-out takes 14–28 weeks from lease signing to move-in. The workstreams overlap.

 

Design can continue while procurement is being prepared. Furniture can be ordered while permits are under review. Construction can begin once the required approvals are in place while later-stage furniture and technology deliveries are already being coordinated.

 

A light refresh of an existing office with limited construction can move much faster than a full tenant fit-out involving new partitions, mechanical and electrical work, accessibility upgrades, millwork, IT infrastructure and new furniture.

 

The building itself also matters. A second-generation office with usable ceilings, lighting and mechanical infrastructure can start from a very different position than a space that needs substantial demolition and reconstruction.

 

A Typical 10,000 Sq. Ft. Office Fit-Out Timeline

The following is a planning example, not a guaranteed schedule. It shows how a typical 10,000 sq. ft. office fit-out can be sequenced when major workstreams overlap.

 

 

The exact sequence changes by project, but the important point is visible in the table: procurement does not wait for construction to finish.

 

If furniture is ordered only after construction is complete, an 8–12 week furniture lead time can push the move-in date well beyond the construction completion date. The same applies to custom millwork and long-lead lighting.

 

The schedule needs to be managed as one project, not as nine independent stages.

 

Stage 1: Sign the Lease and Lock the Project Scope

The first step after signing is not choosing paint colours.

 

It is confirming exactly what you're building.

 

The lease should be reviewed alongside the fit-out requirements so the project team understands the premises, landlord requirements, access conditions, base-building responsibilities, construction rules, and any tenant obligations that affect the schedule.

 

This is also where the budget should be tested against the actual scope.

 

If the pre-lease test fit showed 50 workstations, six private offices, four meeting rooms, a boardroom, kitchen, storage and collaboration areas, those requirements now need to become a real project scope.

 

This is where your office fit-out cost becomes more than a preliminary estimate. The layout, specifications, and building conditions need to be translated into a construction budget.

 

A project that starts construction without a clear scope usually does not become clearer as it progresses. It becomes more expensive.

 

Stage 2: Develop the Office Design

Once the scope is established, the design moves from preliminary planning into detailed development.

 

This is where the team resolves the decisions that affect what will actually be built: partition locations, room sizes, doors, finishes, lighting, power, data, mechanical requirements, millwork, furniture, and other project-specific details.

 

This stage is where the difference between a test fit and a finished office becomes important.

 

A test fit answers:

 

Can the business fit into this space?

 

Detailed design answers:

 

Exactly how are we going to build it?

 

At Sensyst, our Plan and Design stages are intended to resolve those decisions before they create problems in construction.

 

The earlier a conflict is found on paper, the cheaper it is to solve.

 

Stage 3: Prepare Permit and Construction Drawings

Once the design is sufficiently developed, the project moves into permit and construction documentation.

 

The exact documentation depends on the scope and municipality. For commercial interior alterations in Toronto, the City requires drawings to be standardized, to scale, fully dimensioned, signed and dated, with qualified designer information where applicable.

 

For a deeper explanation of what these documents contain and why they matter, see our guide to permit drawings for office fit-outs in Ontario.

 

This is also the point where the project team needs to identify whether the scope requires additional professional involvement, such as architectural or engineering services.

 

Do not treat permit drawings as paperwork that can simply be produced at the end.

 

They are part of the construction schedule.

 

If the drawings are not ready, the permit cannot move forward. If the permit is not approved, construction cannot legally begin where a permit is required.

 

Stage 4: Submit and Manage the Permit

Permit timing is one of the biggest variables in an office fit-out schedule.

 

Toronto currently separates building permit applications into review streams. Complete applications in the Large & Complex Building Stream are reviewed within 20 business days for large buildings and 30 business days for complex buildings. Certain smaller commercial interior alterations can qualify for Express Services under specific conditions. Incomplete applications do not receive the same review timeline.

 

Mississauga currently lists approximately 7–10 business days for pre-screening and a 20-business-day first review for complete non-residential applications. The City also reports an average of about nine weeks to process and issue a permit for non-residential alterations, with resubmissions potentially adding two or more weeks per cycle.

 

Municipal service timelines checked September 2026. These figures are service standards and reported averages, not guarantees for an individual project.

 

Those numbers are important because permit review is not the same thing as total project duration.

 

You still have design completion before submission, municipal comments and resubmissions where required, procurement, construction, and inspections afterward.

 

That is why a realistic fit-out schedule needs to account for approvals from the beginning rather than adding them after the construction date has already been selected.

 

Stage 5: Order Long-Lead Items Early

One of the easiest ways to lose time is to wait until construction starts before ordering everything.

 

Specified commercial furniture commonly carries an 8–12 week lead time.

 

Custom millwork can also require several weeks for shop drawings, approvals, fabrication and delivery. Commercial millwork suppliers commonly quote ranges around 8–12 weeks from approved production information, while more complex custom packages can run longer.

 

Long-lead or custom lighting can also require several weeks between specification, approval, production and delivery. The actual lead time depends heavily on the manufacturer and whether the fixture is standard, modified or made to order, so those items should be confirmed when selections are finalized.

 

That makes the procurement schedule part of the construction schedule.

 

Anything that could delay the critical path should be identified and ordered as early as the project allows.

 

This is particularly important when the move-in date is tied to a lease commencement, business launch, employee return date, or other fixed deadline.

 

A construction crew cannot install a product that has not arrived.

 

Stage 6: Construction Begins

Once the required approvals are in place and the site is ready, construction can begin.

 

The sequence varies by project, but a typical office fit-out can involve demolition, layout, framing and drywall, mechanical and electrical work, ceilings, flooring, painting, millwork, doors and hardware, and final finishes.

 

The important thing is not simply how fast each trade works. It is how well the trades are coordinated.

 

For example, electrical and mechanical requirements often need to be coordinated with ceilings and partitions. Millwork dimensions need to work with walls and services. Furniture needs to fit the final room dimensions.

 

That is why construction management is not just about keeping workers on site. It is about preventing one trade from creating a problem for the next.

 

Stage 7: Inspections, Deficiencies and Final Corrections

An office is not finished simply because the major construction appears complete.

 

Required inspections need to be completed, and the project team needs to identify deficiencies that still need correction.

 

Toronto states that required building inspections for large and complex buildings are generally scheduled within two business days of a request, provided the project is ready for inspection and the required conditions are met.

 

This stage is often underestimated.

 

A door that needs adjustment, a missing ceiling tile, an incomplete millwork detail, a lighting issue or a damaged finish may look minor individually. But several unresolved items can delay furniture installation or final handover.

 

A proper deficiency process catches those items before the tenant's move-in day.

 

Stage 8: Furniture, IT and Operational Setup

Furniture and technology should not be treated as an afterthought.

 

Workstations need to be installed. Private offices need their furniture. Meeting rooms need tables, seating and AV equipment. Reception needs to be operational. IT and data infrastructure need to be tested.

 

This is also where the physical office needs to meet the way the business actually operates.

 

A beautifully finished office that does not have functioning workstations, meeting-room technology or network connectivity is not ready for employees.

 

The final weeks should therefore be coordinated around operational readiness, not just construction completion.

 

Stage 9: Final Cleaning and Move-In

The last stage is handover and move-in.

 

Before employees arrive, the space should be cleaned, deficiencies addressed, furniture installed, technology tested, and the major operational requirements confirmed.

 

The move itself should also be planned.

 

For a larger office, that can include workstation assignments, employee communications, IT cutover, access cards, signage, deliveries, and coordination with the building.

 

A good fit-out schedule does not end with "construction complete."

 

It ends when the tenant can actually operate from the new office.

 

What Usually Delays an Office Fit-Out?

Most delays are not caused by one dramatic problem. They come from small decisions that were left unresolved until they became schedule problems.

 

Common examples include late design changes, incomplete permit submissions, slow approvals, long-lead materials, changes to furniture selections, unexpected existing conditions, and coordination issues between trades.

 

One of the most expensive examples is changing the layout after construction has already started.

 

Moving a wall on a drawing is easy.

 

Moving that wall after framing, electrical, mechanical, drywall, and finishes are already installed is a different proposition.

 

That is why decisions made early in the project have disproportionate value.

 

How to Protect Your Move-In Date

Start with the move-in date and work backwards.

 

If the business needs the office operational by September 1, the project team should identify when construction must finish, when inspections must be complete, when furniture must be installed, when long-lead items must arrive, when construction can start, when permits need to be submitted, and when the design needs to be finalized.

 

That backward planning exposes the real critical path.

 

It also shows where there is no schedule flexibility.

 

If furniture has an 8–12 week lead time and the permit process is taking place at the same time, those activities should not be treated as independent tasks. They need to be coordinated around the same target date.

 

Why Office Fit-Out Planning Should Start Before Construction

The fastest office fit-outs are not necessarily the ones where construction crews work fastest.

 

They are the ones where fewer decisions are being made for the first time on site.

 

By the time construction begins, the major questions should already have answers: What is being built? What has been approved? What needs to be ordered? What is the construction sequence? What does the landlord need? What inspections are required? When does furniture arrive? When can employees move in?

 

At Sensyst, our Plan, Design, Build and Furnish approach keeps those stages connected. That allows the project team to look beyond the construction period and plan toward the actual operational handover.

 

We've been doing commercial interiors in the GTA since 1977, so we've seen how projects become difficult when construction starts before the design, approvals, procurement and coordination are properly resolved.

 

The objective isn't simply to finish construction.

 

It's to hand you an office that is ready for your business to use.

 

Ready to Plan Your Office Fit-Out?

If you've signed a lease for a commercial office in Toronto, Mississauga, Vaughan or the wider GTA, the next step is to establish the scope, schedule and construction requirements before work begins.

 

Sensyst can coordinate the process from planning and design through construction and furnishing, with the move-in date kept in view from the start.

 

Speak with the Sensyst team or call 905-565-9700 to discuss your office fit-out.

 

Frequently Asked Questions

How long does an office fit-out take?

For a typical full turnkey office fit-out, Sensyst currently estimates approximately 6–12 weeks for planning and design, followed by approximately 8–16 weeks for construction and final delivery, depending on project scope and permit requirements. Furniture procurement can run in parallel and specified commercial furniture commonly requires 8–12 weeks.

 

These stages overlap, so they should not simply be added together. The actual schedule depends on the scope, existing building conditions, permits, procurement and required move-in date.

 

What happens after signing an office lease?

After the lease is signed, the project typically moves through scope confirmation, detailed design, permit documentation and approvals, procurement, construction, inspections, deficiencies, furniture and technology installation, and final handover.

 

When should office fit-out design start?

Ideally, the major planning and test-fit work should happen before the lease is signed. After signing, detailed design and construction documentation should begin immediately if the move-in date is fixed.

 

How long do office permits take in Toronto?

Toronto's current review streams list 20 business days for complete applications classified as large buildings and 30 business days for complex buildings. Certain small commercial interior alterations may qualify for Express Services under specific conditions. These are review timelines for qualifying applications, not a guarantee of the total project schedule. Municipal information checked September 2026.

 

How long does a commercial alteration permit take in Mississauga?

Mississauga currently states that prescreening usually takes about 7–10 business days and the first review of a complete non-residential application may take 20 business days. The City reports an average of about nine weeks to process and issue a permit for non-residential alterations, with additional time possible for incomplete applications or resubmissions. Municipal information checked September 2026.

 

Can furniture be ordered before construction is finished?

Yes, and for many projects it should be. Specified commercial furniture commonly carries an 8–12 week lead time, so procurement should begin early enough to overlap with design, permit review and construction rather than waiting for the site to be finished.

 

What can delay an office fit-out?

Common causes include late design changes, incomplete permit submissions, municipal comments and resubmissions, long-lead materials, unexpected existing conditions, changes to furniture or finishes, and poor coordination between trades.

 

When is an office ready for move-in?

The office is ready when the required construction and inspections are complete, deficiencies have been addressed, furniture and essential technology are installed, the space has been cleaned, and the tenant can safely and practically operate from it.