ICF Home Builders in Ontario

Ontario custom home builders who build with insulated concrete forms (ICF), grouped by region, with the questions to ask before you hire one.

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ICF Home Builders in Ontario

Custom home builders who build with insulated concrete forms, grouped by region.

Insulated concrete forms (ICF) are hollow foam blocks that are stacked, reinforced with steel and filled with concrete. The result is a solid concrete wall with continuous insulation on both sides. Many Ontario builders use ICF for foundations. Fewer build the whole house with it. This page separates the two.

1 vetted builder and 13 free listings (not vetted). ICFhome operates BuildersOntario.com, so it is listed first.

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Vetted ICF builder

Vetted · Operator of BuildersOntario.comICFhomeFull ICF homes, from footings to roof line, across Simcoe County and South Georgian Bay. Demonstration show home you can visit.

ICFhome operates this website. Check its licence and references the same way you would check any builder.

Builders who build ICF homes

These builders say on their own websites that they build homes with ICF walls, not only ICF foundations. Free listings, not vetted.

Simcoe County and South Georgian Bay

Wasaga BeachMighton ConstructionCustom homes, cottages and chalets; additions and renovations

Hamilton, Niagara and Grand River

BeamsvilleAuthentic HomesNew custom homes, additions and renovations

Grey, Bruce, Huron and Perth

FleshertonUniversal BuildersCustom homes; renovations; additions; ICF foundations and walls

Kawarthas, Peterborough and Northumberland

CobourgEC Design BuildCustom homes and cottages; additions; garages; agricultural buildingsLakefieldR & M Smith ContractingCustom homes; renovations; general contractingPeterborough areaO’Reilly Custom Homes & ConstructionCustom homes and cottages; additions and renovations

Builders who use ICF for foundations or on some projects

These builders use ICF below grade or on some of their homes. Ask each one how much of your house would be ICF. Free listings, not vetted.

Durham Region

SunderlandVan Kessel ConstructionCustom homes and new home builds, including rural homes

Kawarthas, Peterborough and Northumberland

HavelockBCC HomesTurnkey custom homes, cottages, garages and shops, renovations

Muskoka, Parry Sound and Near North

SeguinJS Custom BuildersCustom homes and cottages; renovations; decks and docksPort CarlingLakewood ConstructionCustom lakefront builds; renovations; additions

Northern Ontario

Thunder BayMariday BuildersCustom homes, additions, ICF foundationsGreater SudburyBoyuk HomesCustom homes on client lots; additions and renovationsSault Ste. MarieMystic Rains ContractingCustom homes, garages, additions

ICF walls or an ICF foundation: what to ask

  • Does the ICF stop at the top of the foundation, or go all the way up to the roof?
  • How many full ICF houses has the builder finished, and can you walk through one?
  • Which ICF block system do they use, and who places the concrete? Pours need proper bracing and a crew that has done it before.
  • How are windows, doors, wiring and plumbing set into the walls, and how does the siding or stone attach?
  • How will the house be heated and ventilated? An airtight house needs a heat or energy recovery ventilator (HRV or ERV) sized for it.
  • Compare whole-house quotes, not a price per square foot of wall.

Is ICF worth it?

ICF walls are quiet, airtight and strong, and they keep the indoor temperature even. They usually cost more to build than a wood-framed wall. Whether that pays off depends on the design, the heating system and how long you plan to stay.

Read more: house construction systems compared, SB-12 energy efficiency explained, why new basements leak and insuring an ICF, log, SIP or modular home.

About this directory

Who runs this directory: BuildersOntario.com is operated by ICFhome, a custom home builder in Simcoe County and South Georgian Bay. ICFhome is listed as a vetted builder, and we say so on every page where it appears. Every other builder on this page has a free listing compiled from public information and has not been vetted. Payment never decides who is listed. Vetted listings are a paid upgrade, accepted only after we research the company, and are always labelled. How we choose builders. Builders: list your company free or get a vetted listing.