"Prior to the sale of an existing residential structure, all toilets must be retrofitted with high efficiency toilets that meet the most recent requirements of the EPA Water Sense program. All city buildings with 5,000 square feet or more and all commercial buildings with 10,000 square feet or more must attain a LEED rating of silver. Select city buildings are required to achieve a gold rating. Commissioning is required for city buildings as a prerequisite for LEED. The energy performance and CO2 emissions for green buildings must be calculated to ensure that the structure exceeds the California Code by 15%."
Residential homes, including both single-family and multi-family, must exceed the 2006 IECC energy efficiency standards by a percentage that is based on square footage. Single-family homes less than 3,000 square feet must be 30% more efficient; homes between 3,000 and 5,000 square feet must be 50% more efficient; and homes larger than 5000 square feet must be 75% more efficient. All multi-family homes must exceed the 2006 IECC by 30%. All applicants seeking a remodel or addition to an existing structure must complete an energy audit before a permit to build will be issued. New construction and remodels must also show that at least 50% of the construction waste is recycled.
Greensburg's Sustainable Comprehensive Master Plan was created in an effort to rebuild Greensburg after a devastating earthquake in 2007. The Master Plan provides a framework for the rebuilding of Greensburg based around the principles of environmental, economic, and social sustainability. As part of the plan, all municipal buildings must be constructed to LEED platinum standards and exceed the energy efficiency baseline code by 42%. The city also has a windfarm that produces 100% renewable energy for the town. It is voluntary for residential homes to comply with the ICC-700 National Green Building Standard. The Master Plan incorporates all aspects of green building- from site selection to walkability to landscaping to hazard mitigation- every element is covered.
The city of Austin has numerous green building provisions within the city building code, with requirements that vary according to location, zoning designation and building type. The building standards rely on the Austin Energy Green Building Rating system and the LEED certification system as metrics. In some cases, developers have the option of achieving compliance under either of the two systems. Under the Austin Energy Green Building Rating System, buildings are awarded up to five stars depending on the number and breadth of green building elements that are incorporated into the design. In terms of energy efficiency, rated buildings are designed to exceed the Austin Energy Code.
Public Resources Code Section 25402.1(h)2 and Section 10-106 of the Building Energy Efficiency Standards establish a process which allows local adoption of energy standards that are more energy efficient than the statewide Standards. This process allows local governments to adopt and enforce energy standards before the statewide Standards effective date, require additional energy conservation measures, and/or set stricter energy budgets. Local governments are required to apply to the Energy Commission for approval, documenting the supporting analysis for how the local government has determined that their proposed Standards will save more energy than the current statewide Standards and the basis of the local government's determination that the local standards are cost-effective. Once the Energy Commission staff has verified that the local standards will require buildings to use no more energy than the current statewide Standards and that the documentation requirements...
Index of Green Building Provisions in Florida Municipal Codes, 2009
All new construction and substantial remodels must exceed Title 24 by 10%, use solar as primary heating for pools, insulate hot water pipes, use the Green Materials list for 50% of building square footage or 100% of building fixtures, submit landscape and irrigation plans for approval to the city of Santa Monica, divert 65% of construction and demolition waste from the landfill, and capture and treat rainwater.