The information requested in relation to expenditure by all local authorities concerned with the improvement works in lieu scheme is set out in the following table. Information relating to activity under the improvement works scheme for each local authority is published in my Department's quarterly and annual bulletins of housing statistics, copies of which are available in the Oireachtas Library. Detailed information on the average cost in each year of improving a dwelling under the scheme is not available in my Department, as local authorities have delegated authority to undertake works which do not exceed a prescribed value without the prior approval of my Department. The current limit is €75,000. It is not possible to derive an average annual unit cost from the number of dwellings improved in a particular year and the expenditure in that year because of changes in the level of work in progress in any year.