How to defend against a suit on my residential building

9 months ago

I have got soil test reports, paid taxes timely, got mutation certificate and also I am the original owner of the land. In our place no building plans are getting sanctioned where there is an existing building. We have built the house in accordance with the zoning rules. We have built the house just prior to the pandemic and as we were given a notice from the owner of the land where we used to stay, to vacant their land within a timeframe so we built the house in emergency and without a sanctioned plan. But the whole construction was made under the observation of registered engineers. I have even informed the municipal authorities about my construction. As no building plans are getting sanctioned with existing buildings now I am unable to get the sanctioned plan. My neighbor's have now filed a suit against my house claiming that it is unsanctioned and need to be demolished. Though they have bought the adjacent land recently (my house was in existence then ).