• Specializing in the construction of energy efficient custom homes
  • LEED and Passivehaus Homes
  • Netzero Energy Homes
  • Grid tied and off-grid solar electric systems for homes, cottages and commercial buildings


Thomas Hewitt is the president and founder of Netzero Construction. After graduating from engineering at Carleton University, he completed a Master’s degree specializing in the study and design photovoltaics (solar electric panels). Over the next 7 years, he designed and implemented solar power stations across Ontario, California and New Jersey.

Thomas Hewitt spent 10 years competing on the National Whitewater Kayak Slalom Team, which allowed him to travel all over the world visiting places not usually visited by tourists. Later in life he joined a Belgium based company, and travelled through many parts of Europe. He got to see first-hand how building technology is evolving in Europe and other parts of the world.

There is one glaring problem with putting solar panels on buildings – the energy generated only slightly offsets the energy required by the building. Why? Because buildings are in general built poorly in regards to energy efficiency. The solution – build better buildings. Thomas Hewitt founded Netzero Construction, and we have been building better buildings ever since.


What if we told you he could build you a house, identical to your neighbour's house, for the same amount your neighbour paid. Only the house he is going to build for you will use 90% less energy. This means if your neighbour pays $300 per month in utilities, you will pay $30.

Of course this sounds too good to be true.

But it is true. And we can prove it.

So how do we do it? The simple answer is that we build smarter. More money is spent on a well-built structure with a thick, well insulated building envelope, and on better windows. Great care is taken sealing every possible air gap. Building elements are designed to reduce labour – the largest cost of any home. The resulting structure requires an extremely small, simple heating and cooling system – and so the money spent on a better building is saved on a less expensive equipment.

Now that the energy usage is reduced significantly, energy generation becomes feasible. For those happy with the $30 per month utility bill, great, no need to go further. Want to reduce it to zero? Add a small solar system, and you can be Netzero!

Services provided

We provide complete design – build services for residential homes, from tiny homes under 500 sq ft up to 6 story multiunit residences. We are fully licensed and insured in both Ontario and Quebec, and offer the New Home Warranty in both provinces. We also provide the following services on request:

  • Design and building of solar photovoltaic arrays for homes and commercial buildings
  • Design review and visualization of client designs – including energy analysis and cost estimations
  • Off grid power systems for homes and cottages not connected to the energy grid