The NRI also have the permission to buy and sell the property in India. The best part is that no document or any other proof is required for the same but they can easily do this without any interference. If they wish to seek the assistance of the agents in the entire process it can be done as the agents on their behalf will handle everything. Only the power of attorney has to be given to them in order to make the purchase. With a few guidelines, the NRI can invest in both commercial and residential property.