In these rules, unless the context otherwise requires,-
(a) "commissioner", means the commissioner of the respective municipal corporation;
(b) "competent authority" means the authority concerned in whom the powers for issue of planning permission or building permission are vest under the relevant provisions of law;-
(c) "current rate" means the rate of charge or fee prevailing on the date of issue of permis-sion;
(d) "development" means carrying out of any of the work or change of use of land defined in clause (13) of section 2 of the Tamil Nadu Town and Country Planning Act, 1971 (Tamil Nadu Act 35 of 1972);
(e) "lay-out" means division of land into plots exceeding eight in number;
(f) "multi-storied building" means and include all building with more than four floors (including ground floor) or whose height is 15 metres or more;
(g) "regularisation fee" means a fee for exempting the development of any land or class of lands or the construction of any building or class of building referred to in section 113-B of the Tamil Nadu Town and Country Planning Act, 1971 (Tamil Nadu Act 35 of 1972), section 283-A of the Madurai Municipal Corporation Act, 1971 (Tamil Nadu Act 15 of 1971) and section 283-A of the Coimbatore City Municipal Corporation Act, 1981 (Tamil Nadu Act 25 of 1981).
(h) other terms used in these rules, unless the context otherwise requires, shall have the meaning as defined in section 2 of the Tamil Nadu Town and Country Planning Act, 1971 and in the Tamil Nadu District Municipalities Building Rules, 1972.