How much you get
No assessment needed: attic & cathedral ceiling
Attic, from ≤R-12
Attic, from R-12–25
Attic, from R-25–35
Cathedral ceiling / flat roof
Assessment required: walls, foundation, crawlspace
Exterior wall
Foundation / basement wall
Basement slab
Foundation header
Crawlspace wall
Crawlspace ceiling
Exposed floor
The attic pays more here than on the no-assessment path
If you're already booking an assessment for other upgrades, do attic insulation through this tier instead, up to $1,500 (vs. $1,250) and $780 for cathedral ceiling (vs. $750).
Hamilton is one of the few Ontario cities with municipal financing that covers insulation directly, on top of the HRSP rebates above: the city's Local Improvement Charge (LIC) loan offers up to $20,000 at a 0% introductory rate for building-envelope work, including insulation and air sealing, repaid over 10–15 years through your property tax bill. It's listed as funding-limited, so confirm current availability before assuming it applies to your project, and it attaches to the property, not you personally, so it transfers with a sale.
How to claim it
- Contact the City of Hamilton to check current LIC loan funding availability
- For attic: confirm eligibility, pick a participating contractor, get it installed, contractor submits the application
- For walls/foundation: book an energy assessment first, then follow the assessment-path steps
Browse HVAC, solar, and electrical installers near Hamilton →
Common questions
What insulation rebates are available in Hamilton?
Ontario's Home Renovation Savings Program covers attic, wall, and basement insulation, plus air sealing, usually as part of a broader retrofit. Amounts depend on the scope of work and typically run a few thousand dollars.
Does Hamilton's LIC loan cover insulation?
Yes, it's one of the categories the Local Improvement Charge loan explicitly covers, alongside heat pumps, air sealing, and supporting electrical work, at up to $20,000 with a 0% introductory rate repaid over 10–15 years through your property tax bill. It's listed as funding-limited, so confirm current availability with the City before assuming it applies to your project.
Do I need an energy audit first in Hamilton?
Yes. Ontario requires a pre-retrofit home energy assessment before insulation work qualifies, so the auditor can confirm the upgrade and measure the improvement afterward.
Hamilton runs on Alectra now, here's what that changes
Alectra Utilities is one of the largest electricity providers in Ontario, built out of a string of mergers across the GTA and Hamilton-area utilities over the past decade. For your insulation rebate specifically, that scale is close to irrelevant, the amounts above are set provincially and apply the same whether Alectra or a small single-city utility bills you. Where Alectra's size actually helps is process: homeowners here report faster turnaround on electrical service-capacity approvals than smaller utilities manage, which matters if your installer wants to pair insulation with air sealing work that touches your panel. It's still worth asking Alectra directly whether they've layered any incentive of their own on top of the province's numbers.
Hamilton's insulation math starts with a mild-by-Ontario-standards winter
At -6.6°C average January low over 2015-2024, with a coldest night of -26.7°C, Hamilton sits toward the milder end of what this rebate program covers province-wide, its position along Lake Ontario keeps the worst of the cold at bay compared to cities further inland. That doesn't mean insulation stops paying off here; it means the payback curve is a bit longer than it would be in a colder Ontario city, since a poorly insulated wall or attic is losing heat against a smaller temperature gap most nights. The rebate math still works, it's just not accelerated by the climate the way it is further north.
Next steps
View all Hamilton rebate programs → or check the official Home Renovation Savings Program site → for the current source of truth.