Construction in France: what is COS of land for construction ?

COS (Coefficient d'Occupation du Sol)

The COS identifies the amount of net habitable space or SHON (surface hors œuvre nette) allowable on the land.

For example, an owner of 1,000 square meters of land with the COS at 0.25, is allowed 1,000 x 0.25 = 250 square meters of net habitable space (SHON).

What is SHON and what part of the building is a net habitable space - see our article "What SHON is and how to calculate it"


Marina Bogacheva, www.tbldesign.fr