How to Set a Renovation Budget in Toronto (2026): Ceiling, Contingency, and the Line Items People Miss

You need two numbers, not one. The ceiling is the most you can spend, all in, without hurting yourself financially. The target is what you design and quote to. The gap between them is where tax and contingency live.

Work backwards from the ceiling. Say your ceiling is $100,000. Take HST off first: $100,000 ÷ 1.13 leaves about $88,500 pre-tax. Then hold back a 15% contingency: $88,500 ÷ 1.15 leaves a target of roughly $77,000. That $77,000 is the number to give your designer and contractor.

It feels small. That is the point. Homeowners who quote to their ceiling have nowhere to go when the first surprise turns up, and on an older Toronto house there is always a first surprise.

Use this to sanity-check a quote or rough out your own split. The percentages are rules of thumb for a mid-sized interior renovation, not a standard. A cosmetic refresh leans toward finishes; a gut job with new mechanicals leans toward construction. The ranges overlap and will not add up to exactly 100%.

The usual guidance is 10–20% of construction cost. Where you land in that range depends far more on the house than on the room.

• Newer home, cosmetic scope: 10% is often enough. Nothing structural is being opened.
• Pre-1960 home: start at 20%. Plaster and lath, undersized joists, and decades of previous owners' work all show up once demolition starts.
• Knob-and-tube wiring: if any is still live, plan to replace it in every wall you open. Insurers often ask about it, and it is cheaper to pull while the walls are already down.
• Cast iron drains or galvanized supply lines: both corrode from the inside. If the stack is cracked, the bathroom budget grows a plumbing line.
• Suspected asbestos or vermiculite: testing comes before demolition, and abatement is its own trade with its own cost.

Treat contingency as off limits for upgrades. The moment it starts paying for a nicer faucet, it is not there when the subfloor turns out to be rotten.

A fixed-price line says what you get and what it costs. An allowance says "we have set aside $X for tile; you pick." Go over and you pay the difference.

Allowances are not a trick. They exist because most people have not chosen every finish when they sign. The risk is a quote that is mostly allowances, set low, which looks great next to a competitor who priced your actual selections. Ask for each allowance in writing, check it against what you would really buy, and make as many selections as you can before signing. Every choice made early is one less moving number.

These rarely appear in the number a homeowner has in their head. They always appear on the invoices.

• HST at 13%. Confirm whether the quote is before or after tax.
• Permits. Structural changes, new plumbing, and secondary suites usually need one. See when you need a renovation permit in Toronto.
• Design and drawings. Permit drawings, an engineer's letter for a beam, and design fees are often quoted separately from construction.
• Disposal bins. A full gut fills more than one, and street placement in Toronto may need a city permit.
• Temporary living and storage. A kitchen or whole-home job can mean weeks out of the house, or at least weeks of takeout. Price it honestly.
• Appliances and window coverings. Often assumed to be "in the kitchen budget" and then not.

Spend on what is expensive to redo. Waterproofing behind tile, wiring, plumbing, insulation, subfloor prep, and the cabinet boxes themselves. Nobody sees them, and replacing any of them later means tearing out the finishes on top.

Save on what is easy to swap. Light fixtures, cabinet hardware, faucets within reason, paint, and decorative tile on a feature wall can all be upgraded in a weekend five years from now. A mid-range porcelain tile on a properly waterproofed shower will outlast a premium tile on a shortcut install.

If the full scope blows past your ceiling, phasing is usually better than cutting quality across the board. Order the phases by how disruptive they are to undo.

• Phase 1: structure, roof, windows, foundation water issues, electrical service, main plumbing.
• Phase 2: the rooms that need the most trades, typically kitchen and bathrooms.
• Phase 3: flooring, paint, trim, finishing a basement.

While walls are open in phase 1, rough in for later phases: extra circuits, a drain line where a future bathroom goes, blocking for cabinets. It costs a little now and saves opening finished walls later. For how a larger project is sequenced, see the step-by-step home renovation guide.

Most Ontario homeowners who do not pay cash use one of a few routes: a home equity line of credit (HELOC), a refinance of the existing mortgage, or a renovation-specific product from their bank. A HELOC suits work paid in stages because you draw only what you need. A refinance may make more sense if your mortgage is coming up for renewal anyway. Rates, penalties, and qualification rules change, and they depend on your situation, so talk to your lender or a mortgage broker before you sign a renovation contract, not after.

Energy work can offset part of the bill. Insulation, heat pumps, and windows may qualify for programs covered in our Ontario Home Renovation Savings Program guide. Program rules and funding change, and some require an assessment before work starts, so check eligibility before demolition rather than after.

Ontario does not set a legal cap on renovation deposits. That makes the draw schedule in your contract the main thing standing between you and paying for work that has not happened.

A sensible schedule has a deposit that covers mobilization and early material orders, then payments tied to milestones you can check: demolition complete, rough-ins passed inspection, drywall up, substantial completion, final walkthrough. Payments tied to dates instead of progress are a warning sign. So is a schedule where most of the money is due before the walls are closed.

Ontario's Construction Act also has holdback rules that can apply to renovation contracts. If your project is large, ask a lawyer how they apply to you. And keep your own spreadsheet of every payment, change order, and allowance overage as the job runs. The budget is a document you manage, not a number you set once.

For what to ask a contractor about payment terms before you hire, see 7 questions to ask a Toronto renovation contractor.