Groupe DDM (Del Degan, Massé et Associés inc.) plans, designs and carries out projects mainly in Quebec. For over 30 years, we have represented clients who develop and protect the territory. We are particularly appreciated for respecting budgets and deadlines. Our customer satisfaction rate exceeds 96%.
Groupe DDM’s multidisciplinary team works regionally, nationally and internationally. It offers a broad range of professional and technical services, a personalized approach, and reliable, innovative solutions.
Groupe DDM has earned a reputation for its project management achievements. Its values and commitment to sustainable development of both the territory and the enterprise are core considerations in everything it does.
Sustainable development
Groupe DDM introduced a sustainable development strategy in 2010, with the aim of minimizing its environmental impact, becoming more socially responsible, reducing its costs and setting an example of sustainable product and service management.

Affiliated companies


Covid-19 (Corona Virus) client information

To our clients and partners,

Groupe DDM and Groupe CHG will be complying with our governments’ measures to slow the spread of COVID-19 and protect public health.

Although the Québec Government has asked companies to close down, Groupe DDM and Groupe CHG, wish to reassure clients that our teams of professionals will be working to maintain all our services during this difficult time. We have devised a business continuity plan that will enable us to serve you as efficiently as possible. Thanks to our information systems infrastructures, our employees are able to work remotely and offer you the service you expect.

Our offices will be closed to all visitors from 4:30 p.m. on March 24, 2020, until April 13, 2020, inclusively.However, the members of our team can be contacted by e-mail, telephone and videoconference.Upon request, we can send the files, reports and other documents that you need to continue your activities. If you wish to send documents to us by courier, we ask you to contact your project officer first, and a delivery agreement will be provided.

In doing this, we hope to play our part in supporting the public authorities’ efforts to limit the spread of the virus. We thank you in advance for your cooperation.

Please do not hesitate to contact your project officer/manager for additional details.