General contractor


We also offer renovation and insulating formwork services.


Hamann Construction is involved in the construction of turnkey houses, while never losing sight of the tastes of its customers.


Hamann Construction offers its services for the renovation or expansion of commercial premises and condos. We have a skilled team…


Entrust us all your renovation and / or interior refurbishment works: Finishing of basement, kitchen, bathroom, doors, windows…

Insulated Formwork

Hamann Construction, is also an expert in formwork (for residential and commercial projects). You will appreciate the superior quality of the product.

Located in Cowansville near Granby A construction professional at your service

Hamann Construction is more than just a mere construction company. We are particularly involved in residential and commercial projects while providing turnkey services. We operate in bespoke, submission of plans and specifications, but also in renovation projects. Our clients place their trust in us and recognize our professionalism, availability and responsiveness.

Comfortably based in Cowansville, a Quebec city in Montégérie, Hamann Construction offers the 10 years of experience of its owner, Jean Olivier Hamann, in renovation works and project management. We have a team of qualified staff who is very detail-minded, with the aim of better meeting your expectations.

Recent Projects

Discover our latest projects. We have the experience for the management of your residential and commercial projects as well as for the renovation and insulating formwork.