VAT and Service Tax are not applicable for “Constructed Property”. It is only applicable for under construction flat.
VAT is not payable in case of purchase of a property from the developer, after the construction is completed and completion certificate is received.
3)A builder cannot charge Value Added Tax (VAT) on transaction for sale of flat effected after he has secured completion certificate for the project from the municipal corporation, the Pune district consumer disputes redressal forum has ruled.
4) in your case since completion certifcate is of oct 2015 and flat purchased in may 2016 no VAt is payable