Use Existing
Building in New Designs
Where existing buildings
meet the following criteria, retain as much as possible of existing
building structures and incorporate them into the new development. Suitable
buildings:
- can be economically
brought up to current seismic, other life safety and fire code standards.
- are placed
appropriately on the site.
- have floor-to-floor
height and floor plan suitable for proposed uses.
- if they contain
asbestos, lead, underground storage tanks and other environmental
hazards, can be economically abated.
- have special
historic significance or architectural merit.
When considering
renovations of existing buildings, examine their annual energy consumption.
Older wall and roof assemblies, windows and skylights often require
upgrading to match the thermal performance of new buildings.
Typically, mechanical
systems older than 8 to 10 years are much less efficient than modern
equipment; replacement improves energy performance and reduces maintenance.
Buildings with heritage value were often well designed for natural
ventilation, cooling and solar control.
Retaining architectural
features with particular merit – unique facades, millwork, fixtures,
etc. – preserves historic context, reduces the environmental
and resource impacts of new construction and often greatly enhances
market value.
Cautions
- Identifying
and abating asbestos and lead paint may be necessary for pre-1975
buildings before remodeling or demolition. OSHA rules and guidance
from the EPA and local health authorities generally determine the
necessary actions.
