Webonline access to maps, real estate data, tax information, and appraisal data. These data do not replace or modify site surveys, deeds and other. Most buildings were constructed between 1908 and 1999, with some properties dating back to. Webonline access to maps, real estate data, tax information, and appraisal data. Welcome to the allamakee county assessor's office. It is our goal to provide information to the public about the duties of the assessor and various services offered by this office. We hope that you will find our website to be…