Préfabois is a Mariembourg-based off-site timber construction company focused on larger wood projects. Its website lists modular apartments and houses, holiday villages, light housing, photovoltaic carports and custom buildings such as hotels, restaurants and technical pavilions.

The company describes central Belgian production sites, transport and assembly on site, foundations by metal piles or concrete pads, and internal capacity for study, prefabrication, lifting and finishing coordination.