Home renovation calculators

A complete toolkit for renovation planning

Renovating without running the numbers first is how budgets blow up and returns disappear. These calculators give you the numbers — cost, return, budget limits, and financing — before you sign a contract or write a cheque. They're free, require no sign-up, and work on any device.

The tools are designed to work together in a natural planning sequence. Start with the renovation budget calculator to find a sensible spending range for your home's value. Then use the cost-per-square-foot calculator or the project cost guides to estimate what the specific work will cost. Check the project's resale return with the ROI calculator to confirm the spend makes financial sense. And if you're borrowing, the home-equity calculator shows how much you could tap, while the loan calculator shows what the monthly payment would be. Each step gives you one more piece of the picture; together they give you the whole thing.

Who these calculators are for

Homeowners planning a renovation are the primary audience — whether it's a $5,000 bathroom refresh or a $150,000 gut remodel. But the tools are also used by real-estate investors evaluating a flip or BRRRR deal (the house flip calculator is built specifically for that), by real-estate agents advising sellers on pre-sale improvements, and by contractors who want to show clients realistic cost and return data alongside a quote.

Every calculator shows its methodology and data sources. The cost and ROI benchmarks come from industry remodelling cost guides and are updated annually. They're planning estimates — a starting point for conversations with contractors and lenders, not a substitute for quotes and professional advice.

How the calculators work

Each calculator pulls from the same underlying dataset: national midrange cost and resale benchmarks compiled from published “Cost vs. Value” remodelling studies and the NAR Remodeling Impact Report. When you select a project, the tool looks up the typical cost at your chosen finish level, adjusts for your region and currency, and calculates what that project historically adds to a home's resale value. The result is a planning-grade estimate — not a contractor quote or an appraisal, but a reliable starting point for deciding whether a project is worth pursuing and how much to budget.

The ROI calculators express the cost-to-value relationship as a percentage: the share of your spend that is typically reflected back in the sale price. An 85% recoup rate means roughly $0.85 of every dollar you spend comes back at resale; the remaining $0.15 is the net cost of enjoying the improvement while you live there. A rate above 100% — rare, but it happens with exterior condition work on dated homes — means the project adds more to the sale price than it costs.