The CDM Regs 2015 make a distinction between commercial clients and domestic clients. A commercial client is any individual or organisation that carries out a construction project as part of a business.
Commercial clients have a crucial influence over how projects are run, including the management of health and safety risks. Whatever the project size, the commercial client has contractual control, appoints designers and contractors, and determines the money, time and other resources for the project.
Read more on the domestic client.