Without the development of land, construction of plant .and installation of machinery is not possible.In my view, 'land development' is also part of Works Contract Service. Your activity is covered under the exclusion phrase, "Other than plant and machinery". In other words, ITC is denied on the contraction of an immovable property except plant and machinery. ITC is admissible from both aspects:-
(i) Credit is denied only on other than plant and machinery. ITC is admissible on construction of plant and installation of machinery.
(ii) Land development is an input service for same service i.e. Works Contract Service. Land development is very much basis of providing Works Contract Service.
What is the legal definition of a 'plant' ? What is classification of 'land development' ?" These have to be taken care of.
Remote possibility of litigation cannot be ruled out due to jugglery of words used in the exclusion clause.