Most Ottawa homeowners I sit down with have already saved some cash for the renovation, but not all of it. The gap between what they have and what the project costs is the financing question. And the answer isn't always the obvious one.
Banks push HELOCs because they're profitable for the bank. Mortgage brokers push refinances because they earn on the new mortgage. Your father-in-law tells you to never borrow against the house. None of those people are looking at your specific situation.
Here's what each option actually costs, when each one makes sense, and the order I walk Ottawa clients through when we map out how to pay for a project, whatever its scope. Financing rates and lender figures below reflect early 2026.
Option 1: Cash (Yes, Really, Sometimes)
If you have the cash, the math for using it is simple: you save the interest. On a large balance carried at a 6.5% HELOC rate over 5 years, the interest adds up fast. Cash skips that.
The argument against cash is opportunity cost. If your investments are returning 7-9% and you can borrow at 6%, the spread (1-3%) is the cost of using cash. For most homeowners that spread isn't large enough to justify the risk and complexity of borrowing. Cash is the right answer more often than financial advisors admit.
The exception: if using cash empties your emergency fund. Don't go below 3 months of expenses in liquid savings to fund a renovation. A water heater failing in February is not the time to be cash-poor.
Option 2: HELOC (Home Equity Line of Credit)
A HELOC is a revolving credit line secured against your home equity, capped at 65% of appraised value (combined with mortgage, max 80% loan-to-value).
2026 rates:65c3">2026 rates:65c3">2026 rates: Prime + 0.5% to Prime + 1.5% at major banks. With Prime at 4.95%, that's roughly 5.45% to 6.45%. Variable rate, moves with Bank of Canada decisions.
Setup costs:b1a">Setup costs:b1a">Setup costs: Expect an appraisal fee plus legal fees if a new charge against title is required. Some banks waive these on a HELOC switch.
When it makes sense:n it makes sense:n it makes sense:n it makes sense:
- You want to draw funds in stages as the renovation progresses (don't pay interest on money you haven't spent yet)
- You can pay it off in 3-7 years
- You're disciplined about not using it for non-renovation spending
- Your renovation is staged or phased
When it doesn't:>When it doesn't:>When it doesn't:>When it doesn't:
- You have less than 25% equity (you won't qualify for enough)
- You'll only make minimum interest-only payments forever (this is how people end up still carrying a large HELOC balance 12 years after the kitchen reno)
- You're rate-sensitive and worried about variable
Pro tip
Apply for the HELOC limit before you need it. Banks evaluate your income, credit, and equity at application. If you wait until your renovation is in progress and your spouse just changed jobs, you may not qualify for what you would have got six months earlier.
Option 3: Mortgage Refinance
You break or extend your existing mortgage and roll the renovation cost into a new, larger mortgage. You can borrow up to 80% of your home's appraised value.
2026 rates: 4.49% to 5.39% on a 5-year fixed at most lenders, occasionally lower through brokers. Significantly cheaper than a HELOC.
Setup costs: A mortgage break penalty (often the greater of 3 months interest or the interest rate differential, which climbs steeply if you have a low fixed rate locked in), plus appraisal, legal fees, and title insurance.
When it makes sense:
- Your existing mortgage rate is already at or above current rates (penalty is small)
- You want a long amortization (10-25 years) to keep payments low
- You want a fixed rate for stability
- The renovation is large (a full gut, addition, or coach house) and a HELOC's higher rate would cost more long-term
- Your mortgage is up for renewal within 6-12 months (no penalty)
When it doesn't:
- You're locked into a sub-2% mortgage from 2021 with a steep break penalty (the penalty kills the math)
- The renovation is small enough that the setup costs eat the savings
Option 4: CMHC Improvement Mortgage Insurance Program
If you're buying a home and renovating it, or you bought recently and are renovating, CMHC insures a mortgage up to 95% of the post-renovation appraised value, including the renovation cost. The mortgage insurance premium applies to the full amount.
2026 rates: Same as a regular insured mortgage, currently 4.39% to 5.19% on 5-year fixed.
Setup costs: CMHC premium of 2.8% to 4.0% of the loan amount, added to the mortgage. Plus standard appraisal and legal fees. Two appraisals are typically required (current value and post-renovation value).
When it makes sense:
- You bought a fixer-upper in Westboro, Hintonburg, or Centretown and need to fund the renovation as part of the purchase
- You don't have 20% equity yet (CMHC's whole purpose is high-ratio borrowing)
- The renovation will significantly increase the home's value (additions, basement legalizations, kitchen + bath gut renos)
When it doesn't:
- You already have 25%+ equity (a regular HELOC or refinance is cheaper)
- The renovation is cosmetic and won't move the appraisal much
Option 5: RRSP Home Buyers' Plan (Limited Use Case)
Worth mentioning because people ask. The Home Buyers' Plan lets you withdraw a capped amount from your RRSP tax-free for buying a first home, with a 15-year repayment schedule. It is not a renovation financing tool.
The related program that does apply: the RRSP Home Buyers' Plan can be used for renovations only if you're a person with a disability (or related to one) buying or renovating a home to be more accessible. Otherwise, the RRSP withdrawal for a renovation is a taxable event and a bad idea.
The better RRSP-adjacent move: if you've taken a tax-deductible loan to invest, you may be able to restructure debts so the renovation is funded by the lowest-cost source while preserving the deductible character of investment loans. Talk to an accountant before making this move.
Option 6: Personal Loan or Renovation Loan
Unsecured personal loans run 8-13% in 2026 at major banks, lower (6-9%) at credit unions like Alterna or Your Neighbourhood. Renovation-specific loans from credit unions sometimes get to 6.5-8%.
When it makes sense:
- You don't have enough equity for a HELOC (less than 20%)
- You don't want to put your house up as collateral
- The project is small (a single room or cosmetic refresh) and you'll pay it off quickly
- You need money in days, not weeks
When it doesn't:
- You have meaningful home equity (a HELOC will be 2-4% cheaper)
- The amount is large enough that the rate spread costs real money
The cheapest financing is the one that matches the renovation timeline. Variable rates for projects you'll pay off in 2-4 years, fixed rates for projects you'll carry for 8-15 years, cash for projects you can absorb without breaking your liquid reserves.
Bank vs. Mortgage Broker (The Question Everyone Has)
Going directly to your bank gets you one rate, from one lender, with one underwriter. Going through a mortgage broker gets you 30+ lender options shopped on your behalf, often including B-lenders the big banks won't tell you about.
For renovation financing specifically, a broker is usually the better call because:
- HELOC rates vary by 0.5-1.0% across lenders. A broker shops them.
- If you have non-standard income (self-employed, contract work, rental income), brokers know which lenders are friendly to it.
- Broker's commission is paid by the lender, not you. The service is free.
The exception: if you have a strong existing relationship with a private banker at one of the big 5, they sometimes have discretion on rates and fees that a broker can't access.
Federal and Ontario Programs Worth Knowing
Two programs that occasionally apply to Ottawa renovations in 2026:
- Canada Greener Homes Grant / Loan: A grant plus an interest-free loan (10-year term) for energy-efficiency upgrades like insulation, windows, and heat pumps. Pre and post-energy audits are required, and their cost is part of your math. Worth it if you're already replacing windows or HVAC as part of the reno.
- Ontario's Multigenerational Home Renovation Tax Credit: A refundable credit worth 15% of eligible expenses, up to a program cap, for creating a secondary unit for a senior or person with a disability. If your renovation includes a basement legalization or in-law suite, this is real money.
Both programs have application rules and approval steps. Apply before the work starts, not after. Receipts dated before the application date don't qualify.
The Order I Recommend Walking Through
For most Ottawa homeowners with a typical renovation, here's the decision tree:
- Use cash to the point you keep 3 months of liquid emergency reserves.
- For the gap, if your renovation is modest and you'll pay it off in 3 years, use a HELOC.
- If your renovation is mid-sized and your existing mortgage isn't a low-rate prison, refinance and roll it in.
- If your renovation is large (addition, coach house, full house gut), refinance into a longer amortization, or use a HELOC for staged draws and refinance at next renewal.
- If you don't qualify for a HELOC or refinance, look at a credit union renovation loan before a bank personal loan.
- Apply for the Greener Homes Loan separately if energy upgrades are in scope. It's free money on the table.
And: get the renovation quote before you finalize the financing. Not a guess. A real, fixed-price quote with line items so you know exactly what you're borrowing for. We work with several Ottawa-based mortgage brokers we trust, and we walk every financing conversation through with our clients before construction starts. The right financing structure is part of a good renovation.