8.10 Renovations and Additions

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renovations/additions should be compatible

When existing buildings are renovated or additions are constructed, the architectural character of the renovation or addition should be compatible with the architectural character of the existing building and the adjacent buildings.  This compatibility includes the use of materials, color, shape, size, scale, and massing in the addition or renovation that blends with the architectural character of the existing structure.  However, when renovating or adding to historical buildings one should be able to differentiate between the historic fabric and the new material. 

LEED™ for Existing Buildings should be incorporated in all renovation and addition projects.  The LEED™ EB rating system strives to maximize operational efficiency while minimizing environmental impacts. It provides a recognized, performance-based benchmark for building owners and operators to measure operations, improvements and maintenance on a consistent scale.  LEED™ for Existing Buildings is a road map for delivering economically profitable, environmentally responsible, healthy, productive places to live and work.  The LEED™ Rating System for Existing Buildings addresses:

  • whole-building cleaning and maintenance issues including chemical use
  • ongoing indoor air quality
  • energy efficiency
  • water efficiency
  • recycling programs and facilities
  • exterior maintenance programs, and
  • systems upgrades to meet green building energy, water, IAQ, and lighting performance standards

8.10.1 ALTERATIONS TO EXISTING BUILDINGS

Generally, all materials and colors used on an alteration type project will need to match exactly the materials and colors of the existing building.  The use of substitute items that closely resemble existing items but are not exact duplicates should be avoided.  For example, where a section of parapet cap flashing has torn away and needs to be replaced, the replacement material should match exactly in manufacture, finish, and color the existing adjacent material.  An example of a related exception is the following: where the entire roof is to be replaced, including the entire parapet cap flashing, the new cap flashing should be of a material, finish, and color to complement existing similar metals elsewhere on the building.  In all other instances, the material and color should follow the applicable guidelines for the zone in which the project is located.

8.10.2 ADDITIONS TO EXISTING BUILDINGS

Generally, all materials and colors used on a building addition project will need to match exactly the materials and colors of the existing building.  The use of substitute items that closely resemble existing items but are not exact duplicates should be avoided.  This is especially critical for materials that will be immediately adjacent to the new addition abuts the existing building.  Wall surface materials and trims will need to be very carefully coordinated in these instances.  An exception could be an instance where a particular existing material and/or color are no longer available.  In this situation, the building addition should be designed to avoid putting unmatched but similar materials immediately adjacent to each other.  Selection of alternate materials and careful positioning of building design elements should be used to downplay the fact that unmatched materials were used.  In all other instances, the material and color should follow the applicable guidelines for the zone in which the project is located.

Zero Waste Goal:
To ensure that the total weight of solid and hazardous waste disposed of is reduced by 100 percent by 2027.  The desired end state is to eliminate or dramatically reduce the amount of waste and to effectively use, reuse or recycle all materials.  

 

 

 

 

 

  
 

Building Design Standards