The architect plays an important role in the field of construction and urbanization. It is known that the first stage of the construction process of buildings and the establishment of other fixed installations is to prepare the design that the architect undertakes based on a contracting contract linking him to the project owner. The Algerian legislator has regulated the provisions of the contracting contract in the Algerian Civil Code and in several special legislative texts related to the construction and reconstruction sector, so the architect has a set of obligations, the failure of which results in responsibility on his side, so what are these obligations?