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Every development is different by way of unit type, location and price; therefore, Green commitment is not based on a rigid set of rules. Each home must, at a minimum, be Energy Star certified by a third party before being eligible to receive Green Commitment Certification.
These following specifications are examples of what a Green Commitment Certified home/project may contain, above and beyond Energy Star.
Site selection
- Development of underutilized or blighted property
- Proximity to public transportation
- Proximity to shopping and entertainment
- Ability to have high density with usable open space
- Availability of existing natural amenities i.e. waterways and parks
- Availability of existing utilities and city infrastructure
Site Development
- Maximizing density while maintaining usable open space for the community
- Use of solar power for site lighting
- Restoration of wetlands and/or woodlands
- Landscaping requirements exceed the local minimums and use indigenous vegetation and trees
- Storm water treatment with the use of compact BMP’s like Filterra to allow for usable open space in lieu of wet retention ponds
- Community gardens
- Use of well or rain water for open space irrigation
- Use of pervious paving when possible
- Amenities that do not require maintenance and copious energy use.
- Amenities that encourage community interaction.
- Protection of existing natural amenities and resources i.e. trees and watershed
- Building placement should consider southern exposure and exiting available shade as well as natural vistas and site lines.
Construction
- Thermal and moisture barriers in slab or foundation
- All sills should be properly sealed
- Use of engineered lumber
- Use of advance framing techniques
- Proper construction of building envelope
- Use of advanced insulation i.e. cellulose or spray foam
- All construction joints must be adequately sealed
- Increase attic insulation
- Use of solar or geothermal energy
- Conditioned attic space
- Sealed ducts
- HVAC system should be properly sized for square footage and ceiling height
- Programmable thermostats
- High efficiency windows
- Low VOC paints
- Low VOC flooring
- Use of overhangs and soffits for shade
- Low flow toilets and showers
- Compact fluorescent bulbs
- Use of exterior materials with longevity
- Use of universal design principles
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