Estimates of Building Land Usage
A2.1 The average annual usage of building land is estimated at:—
A2.2 Housing. The average of 5,000 acres per annum for housing and ancillary services is based on estimates of usage in 1976, 1979 and 1983 shown in Table A2.1 below.
A2.3 Industry. The submission to the Committee by the Department of Industry, Trade, Commerce and Tourism stated that the IDA estimated a total land requirement for industry in the period 1978-1982 at 4,500 acres including allowance for ancillary services, space reservations and open space. On this basis, a round figure of 1,000 acres per annum for industry seems appropriate (to allow for usage by the other development agencies).
A2.4 Other. This is by way of provision for non grant-aided industrial building (e.g. warehousing), usage by semi-State bodies and other minor uses.
Land Usage in Housing
Notes to Table A2.1
*The basic source for completions is the Quarterly Bulletin of Housing Statistics, published by the Department of the Environment. The breakdowns in private estate/single houses and purpose-built apartments are by An Foras Forbartha and Hooke & McDonald respectively. New dwellings resulting from conversions have been excluded.
(1)On the basis of the replies summarised in Appendix 4, the average size of a single house site lies between one quarter and one third of an acre. No allowance is made for ancillary services in the case of these houses.
(2)The land usage is calculated at a basic density of 10 houses per acre with a 50 per cent allowance for ancillary services (shops, community facilities, car parks, public open space, etc.).
(3)The land usage is calculated at a basic density of 12 houses per acre with a 75 per cent allowance for ancillary services (which appears to be higher in the case of local authority houses than for private estates).
(4)Estimated at 25 units per acre. No provision for ancillary services.