Such professionals include architects, architectural historians, and historians who are skilled in the preservation and rehabilitation of historic buildings. Analyzing changes made to the building over time.
Historic buildings are physical records of past inhabitants.
These changes may or may not be an integral part of the historic character and should be evaluated very carefully prior to work. Determining the physical condition of materials and features. These may include ornamental ceilings or cornices obscured by dropped ceilings. Considering every aspect of the work before construction begins. It is generally necessary to write unique specifications rather than use standard specifications for certain types of work on a historic building.