ASurveys are always suggested and are used to determine if there are any encroachments on the property you own or wish to purchase. A survey details the structures (otherwise known as the improvements) and the boundaries of the property. Generally, on real estate sales involving a lender, the lender will require the Alta Form 9 insurance endorsement. If the lender requires the title company to issue this endorsement, then a survey will be required. Note, however, in most cases, a survey is good for 7-10 years and can be re-certified and is often a much less expensive option than ordering a new survey, which can add between $300 and $500 to your closing costs.