Section 2(1)(bk) in Kerala Municipality Building Rules, 1999
(bk)"re-development of land" means the revision or replacement of an existing land use and population distribution pattern and the clearance and building of the area according to a development plan. It involves the reduction or increase of population densities; the acquisition and clearance of deteriorated buildings, the repair, modernisation and provisions of sanitary facilities, water supply and electricity, provision of street, parks or other public improvements and preservation of predominantly built up areas that are in good condition;