Premys
Premys is the Colas Group brand dedicated to deconstruction, site remediation, and rehabilitation. Present throughout France, the company applies its expertise to support the transformation of territories.
Its mission: deconstruct, remediate, and give new life to materials and sites, following a circular economy approach and preserving natural resources.
Our Premys expertise
Premys provides a comprehensive vision of site transformation. Beyond technical operations, the brand supports its clients in complex projects that combine safety, regulatory compliance, innovation, and environmental protection. This integrated approach allows work on all types of sites, residential buildings, industrial sites, public structures, or brownfields, while ensuring responsible management of materials and resources.
Thoughtful deconstruction and responsible waste management
Premys practices selective deconstruction, a method designed to minimize environmental impact while maximizing reuse and recycling.
Each project follows a structured process:
- Assessment of the building and materials,
- Stripping and preparation,
- Asbestos removal and treatment of sensitive areas,
- Methodical sorting, recovery, and traceability.
Deconstructing is preparing for the future. By freeing built spaces, Premys paves the way for reconstruction, urban renewal, or land restoration projects, within a framework of sustainable territorial renewal.
Site remediation and space rehabilitation
Operating on urban, industrial, or sensitive sites, Premys carries out remediation operations to clean soils, secure access, and make spaces usable again.
Its expert teams master the remediation and rehabilitation techniques necessary for:
- Transforming industrial brownfields,
- Creating new uses (housing, offices, public facilities),
- Preventing environmental risks.
In this way, Premys helps restore degraded spaces and give them a second life.
About Premys
About Premys
Maximizing material value for a circular economy
Reuse, recycling, and traceability of materials
Material recovery from construction sites is at the heart of Premys’ commitments. Concrete, wood, metals, soil, plastics… each resource is sorted, inspected, and redirected to appropriate reuse or recycling channels.
Through structured partnerships, notably with Cyneo, Premys develops practical solutions that enable:
- Extending the lifespan of resources,
- Reducing residual waste,
- Supporting the circular economy,
- Encouraging local supply chains.
This approach actively contributes to the ecological transition of the construction sector.
Expertise serving communities and sustainable development
Premys, a partner in urban transformation
Premys supports municipalities, developers, and businesses in their renovation, redevelopment, and urban transformation projects.
Its knowledge of local sectors and strong regional presence enable it to offer interventions tailored to the environmental, regulatory, and technical challenges of each territory.
Safety, innovation, environmental respect, and co-construction guide every operation, always with the goal of rebuilding differently.
Frequently Questions
Yes. Premys works on all types of buildings: residential housing, office buildings, public facilities, industrial infrastructures, sensitive sites, or operational buildings.
Thanks to its specialized teams and national presence, Premys adapts to the specific constraints of each site—accessibility, simultaneous activities, safety, and risk management—to carry out deconstruction or remediation operations under optimal conditions.
Demolition involves quickly destroying a structure, often using heavy mechanical techniques.
Deconstruction, as practiced by Premys, is a selective and methodical approach:
- Building elements are dismantled step by step,
- Materials are sorted directly on-site,
- Recoverable resources are reused or recycled,
- Hazardous waste is isolated, tracked, and sent to approved channels.
This method helps reduce waste, improve the project’s carbon footprint, and preserve the value of materials.
Yes. Premys has certified teams to carry out asbestos removal, abatement, containment, and hazardous material management.
These operations follow strict procedures: confined zones, air quality monitoring, waste traceability, and disposal at approved facilities.
This expertise allows work on older buildings, industrial sites, or sensitive areas requiring enhanced regulatory control.
Materials are sorted from the deconstruction phase and directed to the appropriate channels:
- Reuse (wood, metals, certain secondary building elements),
- Recycling (crushed concrete, plastics, contaminated soil after treatment),
- Reuse in new infrastructure,
- Regulated channels for hazardous waste.
Premys relies on specialized partners—such as Cyneo—to ensure traceability, optimize local resource reuse, and actively contribute to the circular economy.
Learn more
Do you have a deconstruction, remediation, or rehabilitation project?
Our teams support you throughout France—visit the official Premys website.
