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 “it depends.”
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. (Hint: 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’re eligible as a first-time buyer in Ontario.
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 don’t order “almost enough.”
Deck Building Calculator
Estimate deck materials and quantities so your shopping list isn’t a “creative writing” exercise.
Paint & Primer Calculator
Estimate gallons needed for walls and ceilings—so you don’t buy paint twice (and cry once).
Stair Stringer Calculator
Quick rise/run math so your stairs don’t feel like a fitness test.
Roofing Material Calculator
Estimate shingles and roofing materials with fewer “I forgot the starter strip” moments.
Electrical Load & Wire Size Calculator
Plan electrical loads and wire sizing so “just add a hot tub” doesn’t become a panel upgrade.