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HomeMy WebLinkAboutSOI comparative StandardsSECRETARY OF THE INTERIOR’S STANDARDS Preservation 1. Historic use or new one maximizing retention of distinctive materials, features, spaces, & spatial relationships. 2. Retain historic character; avoid replacing repairable materials & altering features, spaces, & spatial relationships. 3. The property is a physical record; conservation work will be compatible, identifiable, & documented. 4. Retain & preserve changes that have acquired historic significance. 5. Preserve distinctive materials, features, finishes, techniques, & craftmanship. 6. Evaluate for appropriate intervention level; limit replacement of features and match the old in composition, design, color, texture of material. 7. Gentlest possible chemical & physical treatments & none that damage historic materials. 8. Protect & preserve archaeological resources in place; mitigate if they must be disturbed. Rehabilitation 1. Historic use or new one minimizing change to distinctive materials, features, spaces, & spatial relationships 2. Retain historic character; avoid removing distinctive materials & altering features, spaces, & spatial relationships. 3. The property is a physical record; no false historicism of conjectural or borrowed features. 4. Retain & preserve changes that have acquired historic significance. 5. Preserve distinctive materials, features, finishes, techniques, & craftmanship. 6. Repair historic features; replace by matching the old in design, color, texture, & (where possible) materials & substantiating by documentary & physical evidence. 7. Gentlest possible chemical & physical treatments & none that damage historic materials. 8. Protect & preserve archaeological resources in place; mitigate if they must be disturbed. 9. Do not destroy characteristic materials, features & spatial relationships with additions, exterior alteration, or related construction. Differentiate new work from old & make compatible with historic materials, features, size, scale, & massing. 10. Make additions & adjacent or related construction reversible for the form & integrity of the property & environment. Restoration 1. Historic use or new one interpreting the property & its restoration period. 2. Retain & preserve materials & features from restoration period. 3. The property is a physical record; conservation work from restoration period will be compatible, identifiable, & documented. 4. Document materials, features, spaces, & finishes characterizing other periods prior to alteration or removal. 5. Preserve distinctive materials, features, finishes, techniques, & craftsmanship characterizing restoration period. 6. Repair features from restoration period; replace by matching the old in design, color, texture, & (where possible) materials. 7. Substantiate replacements by documentary & physical evidence; no false historicism of conjectural or borrowed features or non-historic combinations. 8. Gentlest possible chemical & physical treatments & none that damage historic materials. 9. Protect & preserve archaeological resources in place; mitigate if they must be disturbed. 10. Do not construct designs never executed historically. Reconstruction 1. Use when documentary & physical evidence is available for accuracy & reconstruction essential to public understanding. 2. Evaluate by archaeological investigation features essential to accurate reconstruction; mitigate if resources must be disturbed. 3. Preserve remaining historic materials, features, & spatial relationships 4. Duplicate historic features substantiated by documentary & physical evidence rather than conjecture or borrowing. Re-create appearance in materials, design, color, & texture. 5. Clearly identify as contemporary re- creation 6. Do not construct designs never executed historically.