Experienced Forensic Witness At Your Door Steps The forensic expert witness helps in identifying the exact rate for which the land can be purchased or sold. All these will be measured using some special formulas to help people know the real value of land that can be purchased. Hence, people cannot fix their own value for their lands and cheat people. The witness groups are highly educated and masters in their subjects and hence helps in finding the current value of land. They are persons who are familiar with the law enforcement personnel and lawyers to succeed in the investigation.