If someone has built a building on your land without your permission, here are some steps you can consider taking: Gather evidence: Collect any evidence that proves you are the rightful owner of the land, such as land ownership documents, property records, boundary surveys, or any other relevant documents. Consult a lawyer: Seek legal advice from a lawyer who specializes in property or real estate law. They can guide you through the legal process and help you understand your rights and options. Issue a notice: Send a legal notice to the individuals who have built the building on your land, stating that they are trespassing and demanding that they vacate the premises within a specified timeframe. Your lawyer can help you draft and send this notice. File a complaint: If the individuals refuse to vacate the premises or if they continue to occupy your land, you may need to file a complaint with the appropriate authorities. This could include filing a police complaint or initiating a legal action, such as a lawsuit for trespassing or encroachment. Seek court intervention: If the matter cannot be resolved through negotiation or the individuals refuse to comply with legal notices, you may need to approach the court for legal recourse. Your lawyer can assist you in filing a case and presenting your evidence to seek an order to remove the unauthorized construction. It's important to consult with a legal professional who can provide guidance tailored to your specific situation and the laws applicable in your jurisdiction. They will be able to assess your case, provide you with the best course of action, and represent your interests effectively.