After receiving gifted land and building an apartment with your own funds, you wish to adjust land ownership to match your investment in the built property. Your brother, who contributed no funds, is amenable to this. The discussion suggests a registered settlement deed is the most suitable option, though a relinquishment deed or gift deed are also possibilities. The best choice will depend on the stamp duty applicable in Maharashtra, and consulting a local lawyer is recommended to find the most cost-effective and legally sound solution.