Building science solutions for a greener future

We are a building science consultant and testing firm that specializes in reducing the environmental impact of residential, multi-family, and commercial properties.

Have you heard about the Canada Greener Homes Loan?

We are certified by Natural Resources Canada and have a proven track record of success when it comes to qualifying our clients.

What can we help you with?

Home Energy Evaluations

Receive expert advice to make your home more energy efficient.

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Residential Buildings

Maximize your building’s potential with professional support.

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Commercial Buildings

Decrease operational costs and environmental impact.

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BC Step Code Compliance

Meet Step Code Energy requirements without spending a fortune.

Enabling the transition to a zero-carbon built environment

From residential to commercial projects and remote First Nations communities, our goal is to create energy-efficient housing for all.

Get to know CoEfficient Building Science…

Your energy optimization journey starts here

We accelerate the transition to a zero-carbon built environment through improving new and existing buildings.

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See what our clients have to say

Deva was extremely thorough and patient with all of our various questions about how we can make our home more energy efficient.

Mark Johnston

Home Energy Evaluation

“The information he provided me in regards to the possible improvements, as well as the available grants/rebates, was comprehensive. Thank you so much, Deva!”

Annie Swift

Home Energy Evaluation

“Deva came to our house to perform an energy evaluation but we got so much more! We walked away from our meeting as more educated homeowners.”

Van Dreason

Home Energy Evaluation

Book evaluation