Sample format of writing a complaint to legal authorities for the illegal construction going on in your area and when you have proof that the land that they have acquired is not by any lawful means.
Complaint letter for illegal construction
To the Mayor
I hope you are doing well. With all due respect, I am writing this letter to inform you about the illegal construction of a house opposite to our home. Recently, the government issued a column in the news paper about illegal property areas of various towns. The plot opposite our house was also mentioned, but recently a construction of a house has begun there. Builders are working nonstop from day to night piling bricks and cementing floors. I informed them about the newspaper column and asked whether they knew this land is illegal for property, they got worried but then shrugged off the matter saying they had permission from a government official. If such is the case, please do let me know. I think it is important to bring this matter to your notice. Considering the government is doing such a difficult job to get rid of illegal properties, I consider it my duty as a citizen to keep a check on this too.
I hope you will look into the matter yourself and come up with a solution. For further details you may contact me at the number below.
Model Town resident