This is a question you should ask yourself before hiring a surveyor or engineer. The answer to this question is easier to find then you may realize. The Massachusetts website mass.gov has a service for easily finding professional licensing in MA for many fields. For example, here is a link to my Professional Land Surveying license, and a link to my Professional Engineering License. Unfortunately, there are many companies that offer surveying services and engineering that are not licensed. Do yourself a service and look them up before you decide to hire them. Land Planning, Inc offers Free Estimates for all of our professional services.