Works contract as supply of services under GST - immovable property contracts treated as service with prescribed GST rates. Works contract under GST is confined to contracts relating to immovable property and is treated as a supply of services; ITC on such services is restricted by section 17(5)(c) except when the service is an input service for further supply of works contract services or when the contract relates to plant and machinery affixed to earth. Valuation treats the value of land as one third of the total charged where land transfer is involved; place of supply is the location of the immovable property, and registered persons must maintain separate accounts for works contracts under Rule 56(14).