Calculators
Ontario Construction Calculators
Pick a calculator below and get a quick, practical answer without drowning in spreadsheets. These tools are built for Ontario homeowners and builders who want real numbers, not vague guesses.
Custom Home Building Calculator
A fast budget range to sanity-check your build before you fall in love with the expensive plan.
Heat Loss Calculator (Ontario 2026)
Right-size your heating system for a high-performance home. Bigger is not better.
New Home HST Rebate Calculator (Ontario)
Estimate your potential HST rebate for a new build or substantial renovation.
GST Rebate Calculator (First-Time Home Buyers)
Quickly check your GST rebate estimate if you are eligible as a first-time buyer in Ontario.
Renovation vs Rebuild Calculator
Compare whether it makes more sense to renovate what you have or tear down and build new.
Ontario Building Permit Cost Calculator
Get a rough permit cost estimate for your Ontario project before the paperwork starts piling up.
ICF Energy Savings Calculator Ontario
Estimate how much energy an ICF home may save compared with more conventional wall systems.
Ontario Development Charges Calculator
Check development charge estimates so the surprise does not hit after you already love the lot.
Land Transfer Tax Ontario Rebate Guide
See land transfer tax numbers, rebate details, and what Ontario buyers should budget for at closing.
Ontario Construction Mortgage Draw Schedule
Understand typical construction loan draw stages so your financing matches how the build actually unfolds.
Waterfront Cottage Build Cost Calculator
Estimate waterfront cottage build costs with the extra reality checks these lots usually bring.
Plumbing Cost Calculator (Ontario)
Estimate plumbing costs for your project using Ontario-friendly assumptions and ranges.
ICF Cost Calculator
Estimate ICF wall costs and compare to conventional approaches without guessing.
Concrete Footings Cost Calculator
Rough cost ranges for footings based on size, depth, and typical Ontario pricing inputs.
Concrete Calculator
Calculate concrete volume for slabs, pads, and pours so you do not order almost enough.
Deck Building Calculator
Estimate deck materials and quantities so your shopping list is not a creative writing exercise.
Paint & Primer Calculator
Estimate gallons needed for walls and ceilings so you do not buy paint twice and cry once.
Stair Stringer Calculator
Quick rise and run math so your stairs do not feel like a fitness test.
Roofing Material Calculator
Estimate shingles and roofing materials with fewer forgot-the-starter-strip moments.
Electrical Load & Wire Size Calculator
Plan electrical loads and wire sizing so just add a hot tub does not become a panel upgrade.