To coordinate and to collaborate with the professionals allied to the design including those who provide the additional services for the design project, but not limited the structural architects, engineers, the industrial engineers and the electrical engineers, besides several consultants specialized involved in the design project. To confirm that the documents of construction for the not-structural or not-seismic construction are signed and sealed by the responsible inner designer, like applicable satisfying the jurisdictional requirements and official codes. To administer like agent documents, the supplies and the negotiations of the contract with the client. To observe and to disclose the information on the progress and the completion of the project of the design, besides leading the evaluation of the post-occupation and to prepare information of the post-occupation to name of the client the designers of interiors can be specialized in a certain discipline of inner design, as the residential and commercial design, thus developing to several abilities specialized areas of design like the hospitalization, the care of the health and the institutional design. In jurisdictions where the profession is regulated by the government, the designers will have to own extensive qualifications and to demonstrate their competition in all the scopes of the profession, and not only in a specialty. He is preferable that the designers obtain certificates of specialty of private organizations. The designers of interiors that also own an environmental specialty in the design of solutions for sustainable constructions will be able to obtain an accreditation for this scope appearing to the examination of the Leadership in Energy and Environmental Design (YOU READ). The unique limit of the specialty areas that include the designers of interiors is the imagination and continuously they are growing and evolving. With the increase of the growth of the population, an objective in elk is in the development of solutions to improve the domestic surroundings of the old population, considering the accessibility and health problems that can affect the design.