Positive Homes’ design of collective habitat an urban architecture whose objective is to develop “low-cost” housing for a population often restricted to colocation. It is based on small accommodations of 25 to 35 sq.m, but the “modular” construction system enables unlimited changes in housing size.

Collective objectives reminder

  • Design in harmony with the volumes beneficial to the occupants
  • Optimum and very advanced realization in own site (factory)
  • Research of the shortest possible deadlines on site and of generally any measures to reduce the carbon impact.
  • The use of natural materials for, among other things, better air quality
  • Protection against electromagnetic fields and microwaves
  • Research on energy performance, within the framework of the “Passiv’ Haus” label and the ZNE (Zero Net Energy) target.

Modular construction

On the basis of modules with a multiple surface area of 12.5mÇ, the factory-fabricated construction allows for an almost complete optimum finish, including the “6-sided” envelope. The dimensions of the modules are depending on the road transport standards, a 12.5 sq.m cell + a 25 sq.m cell corresponding to the size of an optimal transport by truck. Technical specifications of the modules To each module is added a crawl space in the form of a double bottom containing the networks and connection systems to the common networks. In addition, this “double bottom” contributes to the module’s energy performance in the ventilation system, especially for cooling purposes.

Revolution in the Module Assembly System

The innovative nature of the assembly method lies in the development of an “anchoring” system that preserves the thermal, acoustic and energy autonomy of each module. This “protected” system allows for the juxtaposition and superimposition of very random modules, opening up the prospect of assemblies to multiple architectural solutions.

Green architecture

Each module includes a terrace with a significant surface area (12mÇ), equipped with rainwater retention tanks forming a peripheral planter receiving abundant vegetation. These containers are also self-irrigated in case of drought. This abundance of greenery gives the building a tree-like appearance and helps to improve the carbon footprint while contributing to the absorption of human-induced pollutants.

The communal areas, within the ring formed by the accommodations in the following example, may have the shape of branches starting from a nucleus formed by vertical circulation, lifts and stairs, and leading to the entrance of the accommodations, which may be randomly arranged. These “branches”, which look like footbridges or even tunnels, will also integrate the fluid networks.

On site benefits

The installation of such assemblies offers a variety of advantages for construction sites:

  • Quick installation
  • Assembly without scaffolding
  • The CLT frame can be used to climb up to an unlimited number of floors, unless otherwise specified in sensitive areas (e. g. in seismic areas)
  • “Dry” construction site with minimal waste, dust and noise pollution
  • Construction site not overflowing onto the street for downtown operations


  • Basement: car parks – traditional structure based on reinforced concrete
  • R and R+1: surfaces that can be converted into shops, hotels, tertiary…
    Structure according to local seismic standards (concrete, metal, wood)
  • N 1-2-3: 3 levels : CLT modules
  • Attic: complementary housing – CLT modules

On level +3, interior garden with ramps allowing to reach the 3 levels by outdoor walks,with high stems trees forming a canopy at the top of the collective habitat building.

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