This document provides criteria to assess conformity of the built environment with the functional requirements and recommendations described in EN 17210 Accessibility and usability of the built environment Functional requirements, regardless of whether self-declaration, second-party attestation or third-party certification is requested. This document provides guidance on how and when accessibility and usability of the built environment have to be considered throughout all stages of the building process, including feasibility, design, construction, completion and post occupancy. It is also applicable for refurbishment or adaptation of existing buildings. FprCEN/TR 17621 Accessibility and usability of the built environment - Technical performance criteria and specifications, provides examples of a way or ways in which the functional requirements in EN 17210 could be fulfilled. Alternatively, National Standards or Regulations can determine the technical performance criteria and specifications to fulfil the functional requirements of/in EN 17210. NOTE 1 Design for All, Inclusive Design and Universal Design share a similar inclusive design philosophy. Universal Design means the design of products, environments, programmes and services to be usable by all people, to the greatest extent possible, without the need for adaptation or specialized design. Universal Design does not exclude assistive options or devices for particular groups of persons with disabilities where this is needed. NOTE 2 Terms such as "design for all", inclusive Design , "universal design", "accessible design", "barrier-free design", "inclusive design" and "transgenerational design" are often used interchangeably with the same meaning.