In criminal terms, there is the crime of forging official seals of state agencies and forging documents. Therefore, it is a civil liability. If there are casualties due to safety accidents due to the project, the relevant responsible persons must be held criminally liable, including those who falsified expert testimony. Currently, if damage is caused to the house, you will be liable for civil compensation. It is recommended to sue in court and name the builder and the counterfeiter as defendants.