ABSTRACT
The demand for the built environment arises from human activities requiring shelter and developed operational space. People form households and require dwellings and a large range of goods and services. Organizations, both public and private, supplying goods and services (directly or indirectly) require shops, warehouses, industrial buildings, offices, health, education and other social buildings, transport and other public utility facilities (Fig. 3.1). Thus initially demand depends on population and its economic and social activities. By far the greater demand for the built environment is met from stock. Additional development arises where the stock of suitable built facilities at required locations and in relation to price is not available. The shortfall may be met by new buildings or by rehabilitation and conversion of existing stock. Some obsolete facilities may be demolished.
