First, you should check to see if your property has covenants. This can be done by contacting your homeowner's association.
Second, you should check with the realtor, seller, or Nags Head Planning Department to determine if your home is in a flood zone and will therefore need flood insurance.
Third, you should check the U.S. Housing and Urban Development's website for their nine steps to buying a home.
These are just a few suggestions. Your realtor can better assist you with buying/renting a home in Nags Head. For a list of realty companies, visit the Outer Banks Chamber of Commerce website.