input on building material

This may be tricky. Please note ITC can be said to be ineligible. Please refer details of Advance Ruling (Andhra Pradesh) in the matters of Maruti Ispat & Energy Private Limited - No ITC on civil structures used as structural support for plant & machinery.

Please note, AAR is not binding on other assessees other than the person who has applied for the same and his jurisdictional officer. 

Also, to refer section 17(5)(c) & (d)