Do I need a pre and post energy audit for the Canada Greener Homes Grant in NB? | Insulation IQ?

Yes — both a pre-retrofit audit and a post-retrofit audit are mandatory requirements for the Canada Greener Homes Grant program, and this requirement applies to New Brunswick homeowners just as it does across all provinces. Neither audit can be substituted, waived, or performed out of sequence. The pre-retrofit audit must be completed before any eligible upgrades begin, and the post-retrofit audit must occur after the work is finished. Reversing that order or skipping either step disqualifies your application, regardless of how much you spend on insulation.

Here is exactly how the process works in New Brunswick:

First, you register your application through the Canada Greener Homes portal at nrcan.gc.ca before scheduling your pre-retrofit audit. Registration establishes your file in the system and is required before an audit can be linked to your application. Do not book the audit and then register afterward — the sequencing matters.

Second, your registered application triggers the booking of a pre-retrofit EnerGuide audit conducted by a Registered Energy Advisor (REA). The REA visits your home, performs a blower door test, inspects all insulation and envelope components, collects mechanical system data, and enters everything into HOT2000 modelling software. The resulting EnerGuide report establishes your home's baseline energy rating — typically somewhere in the 40s or low 50s for pre-1980 homes in Fredericton, Moncton, and Saint John. This baseline is your official starting point and must be on file with NRCan before any work begins.

Third, you complete your eligible upgrades. For insulation work in New Brunswick, this typically includes attic insulation (bringing levels to R-50 or higher from a low baseline), basement wall insulation (targeting R-20 to R-24 in Zone 6), crawlspace insulation, exterior wall insulation, and air sealing. The specific grant amounts vary by upgrade type: attic insulation, for example, qualifies for grants up to $3,500 depending on the improvement in EnerGuide rating achieved.

Fourth, you book the post-retrofit audit once all upgrades are complete. The same REA (or another certified REA) returns to your home, repeats the blower door test, verifies the installed insulation levels and air sealing work, and runs the updated HOT2000 model. The new EnerGuide rating reflects your improved home performance. The difference between your pre and post ratings determines your grant eligibility: larger jumps in the EnerGuide score unlock larger grants, with a maximum of $5,600 in total grant funding available for qualifying retrofits.

The cost of both audits is itself a grant-eligible expense. NRCan covers up to $600 total for the pre and post audit combination — typically structured as $300 per audit. In New Brunswick, REA audit fees generally run $350–$550 each, so the out-of-pocket cost after grant recovery is relatively modest. Some program participants find the audit fees effectively free if the total grant they receive is large enough to absorb that cost many times over.

One important timing note: the Canada Greener Homes Grant program has faced demand pressures since its launch, and wait times for REA appointments in New Brunswick can stretch several weeks, particularly in spring when homeowners are motivated to act. In Moncton especially, booking well in advance of your planned renovation start date is essential. Missing the pre-audit window — starting insulation work before the audit is complete — permanently disqualifies you from the grant for those specific upgrades.

There is a separate and complementary provincial pathway worth knowing: NB Power's Home Energy Savings Program also uses the EnerGuide audit framework and provides rebates on top of the federal grants, meaning many NB homeowners can stack provincial and federal incentives for the same project. The audit satisfies both programs simultaneously, so you are not paying for two separate assessments to access both funding streams.

If you're uncertain whether your planned insulation project meets the eligibility thresholds or want help navigating the application process, New Brunswick Insulation works with homeowners across the province to ensure upgrades are designed and documented to maximize grant recovery from both the Greener Homes Grant and NB Power rebate programs.

---

Looking for experienced contractors? The New Brunswick Construction Network connects homeowners with qualified professionals:

• Arctic Fox Construction Inc.
• moose luxury painting
• Thirty Four Renovations
• Brunswick insulation & roofing
• 3Tone Construction Ltd