William Boujon’s and Julien Benayoun’s first office in Paris (for their studio Bold Design) was a storage closet in a building shared with other Parisian entrepreneurs.

When they discovered a tiny unused room on the roof (it once housed for the building’s elevator engine), they asked for permission to convert it into an office with a view. Hence the space became L’atelier sur le toit.

To keep the budget low, they invited friends to work parties to help convert the 17m2 (183-square-feet) space. The end result is a space-maximized office where trap doors under the floor reveal deep storage or becomes a couch/sleeping mat.

An entire wall is a white board and one desk folds down from the wall so now the space can transform to fit up to 5.