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Our expertise

Plan4 brings together building experts with combined 60 years of projects. Principal consultant Gary was a residential contractor for 20 and holds a doctorate in environmental studies. Since 2010 Gary has advised dozens of homeowner about green and resilient building. Consultant Jean maintained a wide range of HVAC and water systems at the University of Ottawa for 25 years. Jean is obsessed with indoor air quality. Paul studied horticulture at Cornell, is an ISA Certified Arborist and possesses an extraordinary knowledge of trees and nature.

We just wanted to let people know about the great service can provide for your home. We hired Plan4 to check our home that we purchased in November. We knew the house needed work but no idea where to begin. Thanks to Gary's detailed report we now know where the priorities are and how to fix it to make our home more resilient. So important in our (changing) climate.

Wim and Lorie, Chelsea, Qc.


Thanks for the knowledgeable and prompt service you offer. While we had considered some of the issues related to our house’s sustainability in the past, it was great to work with you to think them through in a comprehensive manner. You’ve helped us identify areas where we need to take action to avoid problems as the climate becomes more erratic. For example, thanks to your advice, in the near future we’ll be moving forward on installing battery back-up for our sump pumps, and working on improving the drainage around our house. We’ll also take your advice into consideration  to ensure we’re thinking about safety and comfort, but also resilience.


Chris and Peter, Wakefield, Qc.

My wife and I engaged Gary Martin to prepare a report for our 15 year old house. We jointly inspected and discussed the house and its setting for approximately 2 hours. We received his report within a week. Though we had given considerable attention to environmental perspectives when building our house, the report was educational, and had we had it then, we might have avoided some mistakes. I therefore particularly recommend Gary’s analysis to those who are in the process of planning a house. 

Rolf and Mari, La Peche, Qc.

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