Attachment 7 - Preservation Zone Definitions and Treatment Guidlines.doc

Preservation Zones – Definitions Restoration Zone (blue): Public or private spaces with a high level of integrity and architectural finish, possessing architectural and/or historical significance, and containing significant architectural features that should be preserved or restored as part of any repair or alteration project.

These areas have unique or distinctive architectural features, such as original materials or details, representative examples of highly skilled craftsmanship, or the work of a notable architect or builder. They may also be of significance due to their association with persons or events of preeminent importance.

Architectural features in these spaces should be preserved. If any work is done in these zones as part of repair or alteration project, the significant architectural features are to be restored to their original appearance.

Rehabilitation Zone 1 (green):

Public or private spaces with a moderate to high level of integrity and architectural finish, possessing architectural and/or historical significance, and containing significant architectural features that should be preserved or restored as part of any repair or alteration project.

These spaces contain significant architectural features and original materials, but are less ornate than a Restoration Zone in overall character.

Architectural features in these spaces should be preserved. If any work is done in these zones as part of repair or alteration project, the significant architectural features are to be restored to their original appearance to the greatest extent possible.

Rehabilitation Zone 2 (green hatch): Areas of a moderate to high level of architectural finish but that are not historically significance because they are recent additions. They do contain architectural details that should be preserved or restored as part of any repair or alteration project.

These spaces are not original to the building, but contain architectural features or materials. They are typically less ornate than a Restoration Zone in overall character.

Architectural features in these spaces should be preserved. If any work is done in these zones as part of repair or alteration project, the significant architectural features should be retained and restored to their original appearance to the greatest extent possible.

Renovation Zone (pink): Areas of minimal architectural or historical significance containing few or no architectural features that will need to be preserved or restored as part of a repair or alteration project. Renovation Zone may contain isolated elements of historic and architectural significance that should be preserved and maintain.

Preservation Zone Treatment Guidelines Restoration Zone Guidelines: The overall volume and architectural features should be maintained and preserved as a highest priority. Treatment or intervention in a Restoration Zone should be very carefully planned and designed so that any alteration (for example, installation of new or upgraded building systems such as ductwork, piping, conduit, etc.) will result in little or no visible impact, and little or no loss of historic fabric. Where repair or restoration of architectural features is required, that work should conform to current technical standards.

Coordinate work in Restoration Zones with the Historic Preservation Officer.

Rehabilitation Zone 1 Guidelines: Spaces in this category may be rehabilitated to meet modern functional needs, but every effort should be made to retain and preserve the significant architectural features. New materials may be introduced, but this should be done in as sensitive a manner as possible to assure retention of architectural character of these spaces. Visual intrusions should be avoided. Where repair or preservation of existing features is required, that work should conform to current technical standards.

Coordinate work in Rehabilitation Zone 1 with the Historic Preservation Officer.

Rehabilitation Zone 2 Guidelines: Spaces in this category may be rehabilitated to meet modern functional needs, but every effort should be made to retain and preserve significant architectural features. New materials may be introduced, but this should be done in as sensitive a manner as possible to permit retention of the general architectural character of these spaces. Visual intrusions should be avoided. Where repair or preservation of existing features is required, that work should conform to current technical standards.

Coordinate work in Rehabilitation Zone 2 with the Historic Preservation Officer.

Renovation Zone Guidelines: Renovation Zone spaces are often not publicly accessible and contain few significant architectural details therefore the retention and preservation architectural features is of minimal importance. Use of contemporary design elements is recommended as a means of preserving the overall continuity of these areas of the building. Although substantial redesign of these areas is acceptable, alterations should temper the intrusive quality of projects such as installation of mechanical and electrical systems through careful coordination of new work with existing architectural features and finishes to the greatest extent feasible. Where repair or preservation of existing features is required, such work should conform to current technical standards.