Start with the all-in number, not the contractor's quote
The cash flow plan starts with the total project cost, and the total is always larger than the construction contract. A renovation budget that will survive contact with reality carries six buckets, and the last four are the ones owners routinely leave out:
- The construction contract, including the payment schedule the contractor actually expects: deposits, progress billings and the release of holdbacks.
- Soft costs: design, engineering, permits, legal, appraisal and the interest you pay while the work runs.
- HST, to the extent you cannot claim it back, which for a residential landlord means all of it.
- Lost rent: units vacant during the work, plus incentives or free-rent periods to re-let afterwards.
- A contingency sized to how much of the building you are opening up. The older the building and the deeper the work, the bigger it needs to be.
- Financing costs: lender fees, appraisals, inspections and legal on the facility itself.
Then put the total on a monthly timeline, because renovations do not spend evenly. Deposits land before work starts, trades bill in lumps as stages complete, and Ontario's Construction Act requires you to retain a 10 per cent holdback from payments, which you release only after the lien period runs. Your schedule should show, for each month, the cash leaving, the rent still arriving from occupied units, and the draws or deposits arriving from the funding side.
The discipline this buys you is simple: you see the worst month before it happens. Most renovation cash crises are not overruns; they are timing gaps that were visible on paper months earlier, in a schedule nobody built.
Decide where the money comes from before the work starts
The funding route decides half the plan, because each source delivers cash on a different rhythm and with different paper. There are four realistic sources for an owner-managed portfolio, and large projects usually blend two of them:
| Funding source | How the cash actually arrives | What to watch |
|---|---|---|
| Refinancing the property (or another one in the group) | A lump sum up front, priced on current value and rents | The lender may want support for the post-renovation value; prepayment costs on the existing mortgage can eat the benefit |
| A renovation or construction facility | Progress draws against invoices and inspections, interest-only during the work | Draws fund after you have spent, not before, so you still need a working-capital buffer; cost-to-complete tests can pause draws |
| An intercompany loan from a sister company | Fast and flexible, on your own timing | Must be papered as a real loan and disclosed to lenders; it concentrates group risk in one building while the work runs |
| Retained rents and an owner injection | Slowest to accumulate, no consent needed | Moving cash between entities has tax routes and paper of its own; draining every reserve leaves nothing for the surprise |
The draw mechanics deserve respect. A lender advancing in stages funds against work already done, verified by an inspector, minus holdback. Trades, meanwhile, want to be paid on their invoice terms. That mismatch means even a fully financed project needs its own float, and the monthly schedule from the first section is where you size it.
Our founder spent years in banking and corporate finance before public practice, so we build renovation financing packages the way a credit team reads them: the budget, the post-completion rent roll, the draw schedule and the group context in one document. If the financing is the bottleneck, start with our financing support work before the contractor is booked.
HST decides how much cash the project really consumes
On a residential rental, HST on renovation costs is a true cost, because residential rents are exempt and an exempt business cannot claim input tax credits. Every contractor quote, every materials invoice and every consultant bill should sit in your budget HST-included, and the tax is simply part of the project's price. Owners who budget from pre-tax quotes discover the gap at the worst possible time.
On a commercial property the position reverses: rents are taxable, the corporation is registered, and the HST paid on the renovation comes back as input tax credits. But it comes back on the filing cycle, not on the invoice date, so there is a financing gap between paying tax to the contractor and recovering it on the return. On a large project that gap is real money, and filing monthly rather than annually during the construction period is often worth the administration. Mixed-use buildings sit in between: the tax is apportioned between the commercial and residential parts, and the method needs to be defensible.
One trap deserves its own paragraph. If the work is deep enough that all or substantially all of the interior of a residential building is removed or replaced, GST/HST law can treat you as a builder who has substantially renovated the property. When the renovated units are re-rented, a self-supply rule can require the corporation to self-assess tax on the fair market value of the whole property, with a rental property rebate recovering only part of it. Whether a gut renovation crosses that line is a question to settle with your accountant before the demolition, because it changes the project's cash requirement by a serious margin.
The tax relief is real but slow: repairs, improvements and CCA
Do not plan the cash around a tax deduction, because most major renovation spending is capital, not a current repair. A cost that restores the property to its original condition is generally deductible in the year; a cost that improves the building beyond its original condition, extends its useful life or is part of one large upgrade project is capital, added to the building's class and deducted slowly through capital cost allowance over many years. A full renovation is almost entirely in the second category, however many individually small invoices it is made of.
Two further rules slow the relief down. Soft costs attributable to the period of construction or renovation, including interest and property taxes relating to the work, generally must be capitalized into the building's cost rather than deducted as they are paid. And CCA on a rental property generally cannot create or increase a rental loss; it can only bring net rental income down toward zero, with an exception for corporations whose principal business is renting real property. The practical meaning is blunt: the year you spend the most is often the year the tax system gives you the least back.
So treat tax as a modest, delayed tailwind, not a funding source. Where the split between repair and improvement is genuinely arguable, the classification is worth doing carefully invoice by invoice, because every dollar that lands on the repair side is relief this year instead of over decades.
Source: CRA — Current expenses or capital expenses.
In a group, plan the cash where it actually sits
The renovation is paid by the company on title, but in a multi-entity portfolio the cash is usually somewhere else, and the plan has to respect the structure. Money can only move between your companies along legal routes: dividends flow up ownership chains, loans move sideways or down with real agreements behind them, and every transfer needs to be recorded the day it happens. A renovation funded by an undocumented pile of transfers creates exactly the intercompany mess that stalls the next refinancing.
Which company should own the building in the first place is the deeper question, and a renovation is often the moment it surfaces, because the entity with the project is not the entity with the money. If you are still deciding, the ownership question is covered in whether rentals belong in a corporation at all, and the group-level design in our page on real estate investment companies.
Sequencing matters when a transfer or succession step is on the horizon. Renovating before moving a property into a corporation raises the value that land transfer tax and the supporting valuation must carry on a tax-deferred transfer; renovating after can be cleaner. The same logic applies to an estate freeze, where the work you are about to fund will change the value being locked in. As a business estate planning CPA in Ontario, we sequence the renovation and the structural step together, so the value the work creates lands where you intend it to.
Finally, run the whole thing on a consolidated cash flow view. Rents arrive in several companies, the project spends in one, and the group's external debt still has to be serviced every month while the work runs. A schedule that nets out the intercompany flows and shows the group's true position is the single document that tells you whether the renovation is affordable, and it is the same document your lender will want to see.
What changes the answer
Six facts decide what your renovation cash plan looks like and how much buffer it needs:
- Residential or commercial: which decides whether HST is a recoverable timing cost or a permanent one, and whether a gut renovation can trigger self-assessment.
- Which entity owns the building and where the group's cash sits: which decides how much intercompany plumbing the funding needs.
- The funding route: an upfront refinance, staged draws and internal loans each put cash in your hands on a different rhythm.
- The gap between spending and funding: deposits, holdbacks and draw lag set the working-capital float you must hold.
- How much of the work is repair versus improvement: which sets whether any meaningful tax relief arrives this year.
- Occupancy through the work: lost rent and re-letting costs are part of the project, not a separate problem.
We build these plans as part of an Ongoing Financial Partnership: entity books kept current, a consolidated cash schedule maintained monthly, HST handled on the right cycle, and the financing package prepared before you need it. If you own rentals and want the numbers run before the contractor commits you, our landlord accounting work is the starting point, and a free 15-minute discovery call is how every engagement begins.
