Add a Room produces connectable timber house modules in 20, 25 and 30 m² formats. Units can be used individually as cabins, guest rooms or offices, joined into permanent or summer houses, or connected to an existing building as an extension. The company offers an online builder and can coordinate permits, transport, foundations and installation through project partners.

Modules are delivered in several European markets and can be specified to different levels of completion. The system is designed for later expansion, reduction or relocation of the building arrangement.