The creativity and vision of an interior designer needs to be balanced by a head for business and budgets and a command of materials and marketing. They need to know about relevant building legislation as well as knowing how to design, draft, read and interpret plans. Designers are just as likely to be dealing with a plumber or electrician as they are to be measuring a space for paintings, drafting a contract bid or making sure the painter is working in the right room.
Interior designers plan and detail commercial and residential building interiors for effective use with particular emphasis on space creation, space planning and factors that affect our responses to living and working environments. They consider the purpose, efficiency, comfort, safety and aesthetic of interior spaces to arrive at an optimum design, and custom design or specify furniture, lighting, walls, partitions, flooring, colour, fabrics and graphics to produce an environment tailored to a purpose.
An interior designer often works as part of a team that may include architects, builders, project managers, engineering consultants, shop fitters, cabinet makers, furniture suppliers and materials suppliers. They may be required to organise the modification of building structures, the purchasing of materials and furnishings and the contracting and supervision of the tradespeople required to implement a project.