Era Langdon Associates 81 Portsmouth Ave Stratham, NH 03833 Phone : (603) 778-7200 Business Category Real Estate Condominiums Real Estate Agents & Brokers Real Estate Properties E R A Langdon Associates 81 Portsmouth Ave Stratham, NH 03885 Phone : (603) 778-7200 E R A Langdon Associates Business Category Real Estate Lessors Of Real Property General Business Services Business Consulting Services Services           Multiple Listing Service (MLS), Realtor