We know that property is the total wealth of a person. It may include land, buildings, mortgage rights, debts owed to him, insurance money due, cheques received, cash, etc.
The Transfer of Property Act, 1882, defines immovable property as that which does not include standing timber, growing crops and grass. This is a very open-ended definition though, so we must look at the definition furnished by the General Clauses Act, 1897, wherein it is mentioned that immovable property includes – a) land, b) benefits arising out of land, c) things attached to the earth, or d) permanently fastened to anything attached to the earth. Also, the Registration Act defines immovable property as land, buildings, hereditary allowances, rights to ways, lights, ferries, fisheries, or any other benefits arising out of land and things attached to the earth, but not standing timber, growing crops or grass.
The Sale of Goods Act, which deals with the sale of movable property, says that movable property, or goods, includes any property other than actionable claims and money. This is why transfer of any actionable claim is dealt with in the TOPA.