Illustrated Handbook for Historic Commercial Buildings

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Illustrated Hanbook for Historic Commercial Buildings 40 Standards for Rehabilitation from The Secretary of the Interior’s Standards for the Treatment of Historic Properties 1. Preserve historic character: A property will be used as it was historically or be given a new use that requires minimal change to its distinctive materials, features, spaces and spatial relationships. 2. Use for original/intended purpose: The historic character of a property will be retained and preserved. The removal of distinctive materials or alteration of features, spaces and spatial relationships that characterize a property will be avoided. 3. Avoid false history: Each property will be recognized as a physical record of its time, place and use. Changes that create a false sense of historical development, such as adding conjectural features or elements from other historic properties, will not be undertaken. 4. Preserve changes over time: Changes to a property that have acquired historic significance in their own right will be retained and preserved. 5. Repair over replace: Distinctive materials, features, finishes, and construction techniques or examples of craftsmanship that characterize a property will be preserved. 6. Match original methods/materials: Deteriorated historic features will be repaired rather than replaced. Where the severity of deterioration requires replacement of a distinctive feature, the new feature will match the old in design, color, texture and, where possible, materials. Replacement of missing features will be substantiated by documentary and physical evidence. 7. Minimize damage to historic fabric: Chemical or physical treatments, if appropriate, will be undertaken using the gentlest means possible. Treatments that cause damage to historic materials will not be used. 8. Archaeological sensitivity: Archeological resources will be protected and preserved in place. If such resources must be disturbed, mitigation measures will be undertaken. 9. Compatible new additions: New additions, exterior alterations, or related new construction will not destroy historic materials, features, and spatial relationships that characterize the property. The new work will be differentiated from the old and will be compatible with the historic materials, features, size, scale and proportion, and massing to protect the integrity of the property and its environment. 10. Protect from deterioration: New additions and adjacent or related new construction will be undertaken in such a manner that, if removed in the future, the essential form and integrity of the historic property and its environment would be unimpaired.