How Long Does a Renovation Take in Ontario?

A renovation takes as long as its slowest phase, and that is rarely the hammering. Design decisions, permit review, ordering materials and inspection stages set the pace. Demolition and rough-in are quick by comparison; finishes take steady time but are rarely the reason a project runs over. The honest answer to how long a renovation takes is that the planning months decide the building months.

The order of decisions matters more than any single date. Choose the scope, then the layout, then the finishes, then the contractor, then the permit, then the materials. Each step feeds the next, and skipping ahead usually means going back.

The phases of a renovation, in order

Design and decisions

This is where the project is actually shaped: what is being changed, what stays, what moves. For a kitchen or bathroom, that means layout and fixture choices. For a basement, it means whether a bathroom or bedroom is added. For an addition, it means size, siting and how it connects to the house. A designer registered with a Building Code Identification Number (BCIN) in the right category, a licensed architect or a professional engineer prepares the drawings that go to the permit; an owner may prepare drawings for their own house. Structural work such as a beam for a removed load-bearing wall is usually designed or reviewed by a structural engineer.

This phase is often the longest, because it depends on the homeowner’s decisions, not on a trade’s schedule. Changing a layout after drawings are done costs time and money.

Permits

Once a permit application is complete, the Building Code requires the municipality to issue or refuse a permit for a house within 10 business days. Incomplete applications do not start that clock, and many first submissions are returned for more information. The building department, headed by the chief building official, enforces the Ontario Building Code and inspects the work. Rules differ by municipality, so check with your building department before starting. When a renovation needs a permit explains which projects generally require one.

Ordering and long-lead items

Cabinets, windows, doors, specialty fixtures and some appliances can take weeks or months to arrive. Ordering before demolition begins is one of the simplest ways to keep a project on schedule. A contractor who cannot start until materials land is a contractor who is not delaying you.

Demolition and rough-in

Demolition is fast but dusty. Rough-in follows: framing, electrical, plumbing and HVAC work inside the walls. Electrical work needs an ESA notification of work and inspection, and anyone paid to do electrical work in a home must be a Licensed Electrical Contractor who files the permit. Gas work must be done by a TSSA-registered contractor. Plumbing changes need a plumbing permit and a licensed plumber. Structural changes need a design by a qualified designer or engineer and a building permit. These trades often need to be sequenced, and waiting for one holds up the next.

Inspections

The permit names inspections at stages of the work: footings and foundation, framing, insulation and air barrier, plumbing, and a final inspection, for example. Covering work before it is inspected can mean opening it up again. The permit card must be posted where it is visible. Inspection scheduling adds days to the calendar even when the work itself is ready.

Finishes

Drywall, taping, painting, tile, cabinets, counters, fixtures and trim. This phase is visible and steady, but it is also where small decisions (grout colour, hardware placement, trim profile) can stall a crew if they are not made in advance.

How the main projects compare by phase

The table below compares the same phases across common projects. It uses words rather than weeks, because the length of each phase depends on the scope, the municipality and the trades available.

A kitchen renovation timeline is usually driven by cabinet delivery and the order in which trades return to the room. A bathroom renovation’s length is often set by waterproofing and tile, not by the plumbing rough-in. A basement renovation timeline depends on how much framing and how many inspections are involved. A home addition timeline is the longest because it includes foundation work, exterior envelope and weather-dependent stages.

What makes each phase longer

• Design: indecision, changes after drawings, and structural questions that need an engineer.
• Permits: incomplete submissions, zoning issues that need a minor variance from the Committee of Adjustment, heritage approval, or conservation authority review near water.
• Ordering: custom sizes, specialty finishes and anything shipped from outside the region.
• Rough-in: coordinating electrical, plumbing, gas and HVAC trades, each with its own licensing and inspections.
• Inspections: scheduling and re-inspection when work is not ready.
• Finishes: trades waiting on each other, and small decisions left too late.

Seasons and exterior work in Ontario

Exterior work is weather-dependent. Frozen ground affects excavation and foundation work, and roofing, siding and painting need suitable temperatures. An addition or a deck is best planned so that the exterior stages fall in the milder months. Interior work can continue through the winter, but materials stored on site and heating the work area add practical constraints. A contractor should be able to say which stages are weather-sensitive and how the schedule accounts for them.

What causes delays

Delays usually come from four places: decisions made late, permits returned for more information, materials ordered after demolition, and trades waiting on each other. A written schedule with the homeowner’s decision dates marked on it is more useful than a single completion date. Change orders should be written and signed by both sides before the extra work is done, because a verbal change is where both time and money go missing.

What goes wrong

• Starting demolition before the permit is issued. Work covered before inspection can have to be opened again.
• Choosing finishes after the rough-in. Moving an outlet or a drain line later costs time and money.
• Ordering cabinets late. The room sits empty while the crew waits.
• Skipping the pre-demolition checks. Homes built before 1990 may contain asbestos in insulation, plaster, tiles or pipe wrap; suspect materials should be tested before demolition, and removal done by trained asbestos professionals. Homes built before 1960 probably contain lead-based paint, and sanding or scraping releases lead dust. Older wiring should be assessed by a Licensed Electrical Contractor before walls are closed.
• Not testing for radon before finishing a basement. Health Canada’s guideline is 200 Bq/m³, tested with a long-term detector for at least 3 months (91 days), ideally between fall and spring, on the lowest lived-in level used for more than 4 hours a day. Finishing a basement is a good moment to test and, if needed, install a mitigation system.
• Digging without locates. Before any digging, request utility locates through Ontario Dig Authority (formerly Ontario One Call). It is free and required by law, at least 5 business days before digging.
• Assuming Tarion covers the work. Tarion administers the warranty on new homes built by licensed builders; it does not cover renovations, additions to an existing house or remodelling. For those, the protection is the written contract, the contractor’s own warranty and insurance.
• No holdback. Under the Construction Act, every payer, homeowners included, must hold back 10% of each payment. A subcontractor can lien a home even when the general contractor has been paid in full. How this applies to one contract is a question for a lawyer.

Questions to ask before the schedule is agreed

• Which stages need a permit, and who files each one?
• Which materials have long lead times, and when will they be ordered?
• Which inspections are named on the permit, and who books them?
• Which stages depend on the weather?
• What are the homeowner’s decision deadlines, and what happens if one is missed?
• Is HST included in the price? Ontario’s HST is 13% (5% federal and 8% provincial) and applies to renovation labour and materials.

A calm schedule is built from decisions made early. How to plan a home renovation in Ontario, step by step sets out the order; the kitchen, bathroom, basement and addition pages go deeper on each project’s own sequence. For a kitchen, see the complete kitchen renovation process; for an addition, see planning a home addition in Ontario.