North Carolina Administrative Code › Title 07 - Natural and Cultural Resources › Chapter 04 - ARCHIVES AND HISTORY › Subchapter R - ARCHAEOLOGY AND HISTORIC PRESERVATION SECTION › Section .0900 - TAX ACT CERTIFICATION REVIEW › Section 04R .0915 - STANDARDS FOR REHABILITATION

Current through Register Vol. 39, No. 2, July 15, 2024
(a) The North Carolina
				  Historical Commission interprets the "Standards for Rehabilitation" to require that
				  the quality of materials and craftsmanship used in a rehabilitation project must be
				  commensurate with the quality of materials and craftsmanship of the historic
				  building in question. Certain treatments, if improperly applied, or certain
				  materials by their physical properties, may cause or accelerate physical
				  deterioration of historic buildings. Inappropriate physical treatments include, but
				  are not limited to: damaging masonry repointing techniques; exterior cleaning
				  methods such as sandblasting or damaging water pressure; or the introduction of
				  sealers or "non-breathable" materials on masonry surfaces, insulation, storm
				  windows, and epoxy where the application of such treatments or materials does not
				  conform to NPS Guidelines for Rehabilitating Historic Buildings and NPS
				  "Preservation Briefs." Nonconforming use of these materials and treatments may
				  result in denial of certification. Similarly, exterior additions that duplicate the
				  form, material, and detailing of the structure to the extent that they compromise
				  the historic character of the structure shall result in denial of certification.
Other typical denial issues in which the historic integrity of
					 the structure is compromised include but are not limited to the following: removal
					 of character defining historic exterior/interior materials and features such as
					 doors, windows, woodwork, and significant landscape features; excessive site paving;
					 installing undocumented or non-period features; excessive alteration of
					 exterior/interior features or spaces; removal of plaster from interior masonry walls
					 to expose underlying masonry surface; installation of inappropriate replacement
					 doors and windows such as metal or vinyl clad windows in place of wood windows;
					 replacement of non-deteriorated or repairable materials such as windows or millwork;
					 painting unpainted masonry surfaces; installation of artificial siding.
(b) In limited cases, it may be
				  necessary to dismantle and rebuild portions of a certified historic structure to
				  stabilize and repair weakened structural members and systems. In such cases, the
				  SHPO shall consider such extreme intervention as part of a certified rehabilitation
				  if:
(1) the necessity for dismantling is justified
				  in supporting documentation;
(2)
				  significant architectural features and overall design are retained; and
(3) adequate historic materials are retained to
				  maintain the architectural and historic integrity of the overall structure. The
				  "Standards for Rehabilitation" require retention of distinguishing historic
				  materials of external and internal walls as well as structural systems. In limited
				  instances, rehabilitations involving removal of existing external walls, i.e.,
				  external walls that detract from the historic character of the structure such as in
				  the case of a nonsignificant later addition or walls that have lost their structural
				  integrity due to deterioration, may be certified as meeting the "Standards for
				  Rehabilitation."