I am planning to get an Australian citizenship, for which I would have to surrender my Indian passport for the same. Will this have any impact in my properties in Delhi? Is there any documentation for this process? and more importantly, my family would also have an Australian citizenship, so will they be able to use the property?
It would have no difference on your title to the properties as you would be entitled to retain the same being a Person of Indian Origin and also since you acquired the same when you were Indian citizen.