Stock house plans do not come stamped or signed by an architect or engineer, and may not include structural engineering notes/calculations.  All house plans are architectural in nature, and must be reviewed by a local licensed engineer prior to construction.  Please check with your local building officials to determine if an architect's stamp is required.  After plan purchase from Archival Designs, the purchaser(s) and/or builder is responsible for additional expenses incurred through meeting municipality requirements or other requirements for construction.