My friend had purchased a house in Mysore. It has only ground floor. He has permitted me to construct another floor (Ist Floor) and to use it for my residence or to let out. He assures me that I would be the Owner of that floor and is willing to execute any documents in this regard. Please suggest the proper documents to be obtained.
First of all, please examine the FAR permitted on the site. You have not informed the dimensions of the site, built up area of the house and details of building plan originally approved. If further construction to suit your needs is permitted, you may proceed further. Your friend may lease the roof rights for a longer period in your favour. But in this case you will be enjoying only leasehold rights and not ownership rights and problems may arise after the expiry of lease period. You may also acquire undivided share in the land, wherein you will derive ownership rights you may construct a first floor. Please ensure that the deeds are properly drafted, legal guidance is recommended. In both the cases, the documents should be properly stamped and registered.