| What other factors might affect project eligibility? AnswerCertain factors and conditions can determine whether a potential 
              project is eligible for the 20% tax credit.
 Physical IntegrityThe 20% tax credit for historic preservation is meant to preserve 
              historic buildings, and not to create buildings that look 
              old, but that are in effect new buildings. Thus, the Preservation 
              Tax Incentives are not available where there is insufficient historic 
              material to preserve at the outset of the rehabilitation. Once the 
              integrity of a building has been lost due to deterioration, damage, 
              or previous alterations, it can never be regained. While new material 
              can exactly copy significant features, material integrity itself 
              can never be re-created. It is important to select a building for 
              rehabilitation that retains its basic physical integrity before 
              rehabilitation.
 
 Non-historic Surface CoveringsSome historic buildings have been covered with non-historic surface 
              coverings that obscure the building underneath. In these cases, 
              it may be necessary to remove the covering to make sure that there 
              is enough historic building material remaining that the building 
              still qualifies as historic.
 Multiple BuildingsFarms, mills, and other historic properties often have more than 
              one building. For properties with multiple buildings that were functionally 
              related historically, the rehabilitation certification decision 
              will be based on the effect of the overall rehabilitation on the 
              entire property, and not on each structure or individual component.
 Moved BuildingsMoving a historic building can jeopardize its listing in the National 
              Register of Historic Places, and special procedures must be followed 
              to ensure its continued listing. Likewise, moving a building into 
              or within a historic district may jeopardize its ability to contribute 
              to the significance of the district. If a building will be moved 
              as part of the rehabilitation project, consult with the SHPO as 
              soon as possible.
 DemolitionProjects that involve demolition require careful planning to ensure 
              approval. This is true whether whole buildings will be demolished 
              or only parts of a structure.
 
 
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