Classification of Work for Existing Buildings


  • Additions - Additions are an extension or increase in floor area, number of stories, or height of a building or dwelling.
  • Change of Occupancy - Change of Occupancy occur when there is a change in the purpose or level of activity within a building that involves a change in application of the requirements.
  • Level 1 Alterations - Level 1 Alterations include the removal and replacement or the covering of existing materials, elements, equipment, or fixtures using new materials, elements, equipment, or fixtures that serve the same purpose.
  • Level 2 Alterations - Level 2 Alterations include the reconfiguration of space, the addition or elimination of any door or window, the reconfiguration or extension of any system, or the installation of any additional equipment.
  • Level 3 Alterations - Level 3 Alterations apply where the work area exceeds 50 percent of the aggregate area of the building.
  • Repairs - The restoration to good or sound condition of any part of an existing building for the purpose of its maintenance.
  • Historic Buildings- Historical Buildings are any building or structure that are:
    • Certified as a contributing resource within a National Register listed or locally designated historic district
    • Designated as a historic property under local or state designation law or survey
    • Listed in the State or National Register of Historic Places
    • With an opinion or certification that the property is eligible to be listed on the National or State Register of Historic Places either individually or as a contributing building to a historic district by the State Historic Preservation Officer or the Keeper of the National Register of Historic Places
  • Relocated Buildings - Relocated Buildings are buildings or dwellings that are relocated or moved.