(a) Definitions. The following words and terms, when used in this section, shall have the following meanings, unless context clearly indicates otherwise.
  (1) Damage--To alter, in whole or in part. Damage to historical or architectural integrity includes alterations of structural elements, decorative details, fixtures, and other material; construction of additions; relocation; or demolition.
  (2) Integrity--Integrity refers to the physical condition and therefore the capacity of the resource to convey a sense of time and place. Integrity is the authenticity of a property's historic identity, evidenced by the survival of physical characteristics that existed during the property's historic or prehistoric period, including the property's location, design, setting, materials, workmanship, feeling, and association. In terms of architectural design, to have integrity means that a building still possesses much of its mass, scale, decoration, and so on, of either the period in which it was conceived and built, or the period in which it was adapted to a later style which has validity in its own rights as an expression of historical character or development. The question of whether or not a building possesses integrity is a question of the building's retention of sufficient fabric to be identifiable as a historic resource. For a building to possess integrity, its principal features must be sufficiently intact for its historic identity to be apparent. A building that is significant because of its historic association(s) must retain sufficient physical integrity to convey such association(s).
  (3) Normal maintenance and repair--Work that does not have the potential to cause removal, damage or alteration to the integrity, form, or appearance of the materials, features, or landform of the historic building or structure and its site, is considered to be normal maintenance and repair. Cleaning surfaces with non-corrosive mild solutions and low-pressure water, repainting window frames or doorways with similar paints, or minor repairs such as replacing putty on windows are examples of normal maintenance and repair. Other work, however, may not constitute normal maintenance and repair. For example, permanent masonry damage can result from use of inappropriate cleaning methods, such as sandblasting, high pressure water cleaning, or the use of unsuitable chemicals, or from use of damaging repointing techniques and materials. Replacing historic windows damages the historical integrity of a building, and painting previously unpainted surfaces constitutes alteration. Such work is not considered normal maintenance or repair.
(b) Procedure. As provided for in Texas Government Code, §442.006(f), a person may not damage the historical or architectural integrity of a structure the commission has designated as a Recorded Texas Historic Landmark (landmark) without first notifying the commission. Such notice shall not be required for normal maintenance and repair; for interior work that does not affect the exterior integrity of the property; or for work to the surrounding site unless included as part of the designated landmark.
  (1) Notice from the property owner to the commission. At least 60 days prior to the proposed work on a landmark, a written notification from the property owner describing the project shall be submitted to the commission, along with construction documents, sketches, or drawings which adequately describe the full scope of project work and photographs of the areas affected by the proposed changes.
  (2) Notice from the commission to the property owner. Written notice of the commission's comments pursuant to a review of the proposed work shall be provided by the commission. Comments shall be made based on the Secretary of the Interior's Standards for the Treatment of Historic Properties (1995 and subsequent revisions; codified at 36 Code of Federal Regulations Part 67), which are summarized in subparagraphs (A) - (C) of this paragraph:
    (A) Definitions for historic preservation project treatment.
      (i) Preservation is defined as the act or process of applying measures necessary to sustain the existing form, integrity, and materials of an historic property. Work, including preliminary measures to protect and stabilize the property, generally focuses upon the ongoing maintenance and repair of historic materials and features rather than extensive replacement and new construction. New exterior additions are not within the scope of this treatment; however, the limited and sensitive upgrading of mechanical, electrical, and plumbing systems and other code-required work to make properties functional is appropriate within a preservation project.
      (ii) Rehabilitation is defined as the act or process of making possible a compatible use for a property through repair, alterations, and additions while preserving those portions or features which convey its historical, cultural, or architectural values.
      (iii) Restoration is defined as the act or process of accurately depicting the form, features, and character of a property as it appeared at a particular period of time by means of the removal of features from other periods in its history and reconstruction of missing features from the restoration period. The limited and sensitive upgrading of mechanical, electrical, and plumbing systems and other code-required work to make properties functional is appropriate within a restoration project.
      (iv) Reconstruction is defined as the act or process of depicting, by means of new construction, the form features, and detailing of a non-surviving site, landscape, building, structure, or object for the purpose of replicating its appearance at a specific period of time and in its historic location.
    (B) General standards for historic preservation projects.
      (i) A property shall be used as it was historically, or be given a new use that maximizes the retention of distinctive materials, features, spaces, and spatial relationships. Where a treatment and use have not been identified, a property shall be protected and, if necessary, stabilized until additional work may be undertaken.
      (ii) The historic character of a property shall be retained and preserved. The replacement of intact or repairable historic materials or alteration of features, spaces, and spatial relationships that characterize a property shall be avoided.
      (iii) Each property shall be recognized as a physical record of its time, place and use. Work needed to stabilize, consolidate, and conserve existing historic materials and features shall be physically and visually compatible, identifiable upon close inspection, and properly documented for future research.
      (iv) Changes to a property that have acquired historic significance in their own right shall be retained and preserved.
      (v) Distinctive materials, features, finishes, and construction techniques or examples of craftsmanship that characterize a property shall be preserved.
      (vi) The existing condition of historic features shall be evaluated to determine the appropriate level of intervention needed. Where the severity of deterioration requires repair or limited replacement of a distinctive feature, the new material shall match the old in composition, design, color, and texture.
      (vii) Chemical or physical treatments, if appropriate, shall be undertaken using the gentlest means possible. Treatments that cause damage to historic materials shall not be used.
      (viii) Archeological resources shall be protected and preserved in place to the extent possible. If such resources must be disturbed, mitigation measures shall be undertaken.
    (C) Specific standards for historic preservation projects. In conjunction with the eight general standards listed in subparagraph (B)(i) - (viii) of this paragraph, specific standards are to be used for each treatment type.
      (i) Standards for rehabilitation.
        (I) A property shall 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.
        (II) The historic character of a property shall be retained and preserved. The removal of distinctive materials or alteration of features, spaces, and spatial relationships that characterize a property shall be avoided.
        (III) Each property shall 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, shall not be undertaken.
        (IV) Changes to a property that have acquired historic significance in their own right shall be retained and preserved.
        (V) Distinctive materials, features, finishes, and construction techniques or examples of craftsmanship that characterize a property shall be preserved.
Cont'd...