1 / 56

Green Building

Green Building “The future of home building is green building” Charlie Ruma, Immediate-past President of NAHB Definition green building is the resource-efficient— 1. design 2. construction, and 3. operation of buildings by employing environmentally sensible:

Télécharger la présentation

Green Building

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.


Presentation Transcript

  1. Green Building “The future of home building is green building” • Charlie Ruma, Immediate-past President of NAHB

  2. Definition • green building is the resource-efficient— 1. design 2. construction, and 3. operation • of buildings by employing environmentally sensible: 1. construction practices 2. systems, and 3. materials Source: National Association of Home Builders (NAHB)

  3. Facts • recent phenomenon (1991) • about a 2 dozen green building programs in existence: • municipal • voluntary (Austin, TX) • mandatory (Boulder, CO; Frisco, TX) • HBA • voluntary (Denver, CO; Atlanta, GA) • more to come…

  4. Components • main areas addressed by green building programs: • energy and resource efficiency • water conservation • health and environmental quality • materials and waste management • site design and protection

  5. Energy Standards • reduces energy consumption: • passive solar design • light-colored roofing • energy-efficient appliances • low emissivity windows • improved insulation • efficient lighting • energy-efficient AC and heating systems

  6. Resource Standards • draws on renewable resources where possible: • ground-source heat pumps • passive solar design • solar thermal water heaters • photovoltaic panels

  7. Water Standards • conserves water: • low-flow fixtures • low-flow toilets • greywater systems • rainwater harvesting • xeriscaping • “smart” irrigation systems

  8. Materials Standards • promotes best use of materials: • floor joists, wall studs at 24” centers • engineered lumber products where possible • laminated wood in lieu of solid beams • regionally-produced products • recycled content carpet and padding • recycled content roof material

  9. Waste Management Standards • encourages waste management: • recycle construction waste • outdoor composting • built-in kitchen recycling center

  10. Building Site Standards • protects the building site: • erosion control site plan • save and reuse topsoil • existing tree protection • replant or donate removed vegetation • maximize pervious surface

  11. Health/Environmental Standards • focuses on health and environmental quality: • low VOC interior paints • solvent-free, low-toxic finishes • radon mitigation • carbon monoxide detector • exhaust fan in garage • moisture control measures • central vacuum system vented to exterior

  12. Benefits of Green Building • lower operating cost • homes require less energy and use less water • lower maintenance • more durable building components/better building practices reduce upkeep and replacement costs • increased home value • lower documented utility bills • market for “green” homes • improved environmental quality • indoor (moisture control) • outdoor (resource-efficiency) Source: NAHB

  13. Existing Programs • Austin, TX • Boulder, CO • Denver, CO • Atlanta, GA • Frisco, TX

  14. Austin Green Builder Program • first green building program in the nation (1991) • voluntary, municipally-run program • city-owned utility company is a major partner in the program • certifies homes on a scale of one to four stars. • 5 content areas focusing on environmental issues • assists building professionals: • training • marketing • technical advice

  15. Austin Green Builder Program (cont.) • market-based and market-driven program (very little regulation) • energy code amendment to building code • 18 required items out of 170 • focus on education of consumers: • consumers drive the market • $150,000 marketing budget • certified approximately 600 homes in 2000

  16. Boulder’s Green Points Building Program • municipally-run program • mandatory (regulatory with some flexibility) • new construction/remodeling over 500 square feet • Green Points Application • 1 level with 8 content areas • few point requirements from the content areas • additional point for every 200 sf. over 2,500 • mix of city-inspection and self-certification standards • standards in packet (Appendix C)

  17. Denver’s Built Green Colorado Program • voluntary, HBA–run program • extensive marketing and education partnerships with state government • provides marketing and technical assistance to builders, as well as discounts on educational seminars • great flexibility • 21 content areas focusing on energy and materials • only 1 required item out of 136 • certified over 1,200 homes in 2000

  18. Atlanta’s EarthCraft House Program • voluntary, HBA-run program • provides builders with training, technical assistance, marketing materials, and direct referrals • NAHB “Guide to Developing Green Builder Programs” • 1 level with 12 content areas • certification by HBA • standards in packet (Appendix D)

  19. Frisco’s Green Builder Program • mandatory, municipally-run program (adopted May, 2001) • first city in the country to adopt the EPA’s Energy Star program requirements as minimum building standards for new homes • HERS score of 86 (30% more efficient than the 1993 Model Energy Code) • mix of third-party certification, government certification, and self-certification • requires builders to donate unwanted building materials to a non-profit building organization

  20. Summary of Programs • overall… • program administration • voluntary or mandatory • program partners • levels of certification • method of certification • number and design of content areas • total number of standards • number of required standards

  21. Why Aren’t There MoreGreen Buildings? • decentralized building industry • information barriers • split incentives • transaction costs • financial barriers • energy costs Source: Renewable Energy Policy Project (REPP)

  22. 1. Decentralized Building Industry • 5.5 million people in construction industry • from concept to occupancy, constructing a building requires: • developers, architects, landscape architects, site planners, engineers, contractors, craftworkers, interior decorators, realtors, lenders • vast number of companies and individuals require education and training in the concepts and techniques of green building before it will become the norm Source: REPP

  23. 2. Information Barriers • builders and consumers often lack reliable information about renewable or energy-efficient technologies • consumers lack information about energy consumption of appliances • builders lack information on latest techniques and materials used in resource and energy-efficient building • government officials lack information about the benefits of green building and how those principles can be applied in their communities Source: REPP

  24. 3. Split Incentives • developers, builders, landlords, and others who choose the structural components and equipment in a building often are not the ones paying the operating costs • minimize initial cost outlay to minimize the overall cost of the building Source: REPP

  25. 4. Transaction Costs • numerous transaction costs combine to emphasize speed in the building process • builders “go with what they know”: • often less expensive, less efficient products • don’t have time to try out new products • don’t have time to learn new techniques Source: REPP

  26. 5. Financial Barriers • many builders and homeowners only look at initial cost • technologies that increase the energy efficiency of buildings and substitute renewable energy for fossil fuels usually raise the initial cost of a building. • homeowners lack the capital • consumers don’t take advantage of the financial incentives that exist to help them • energy efficient mortgages (EEMs) Source: REPP

  27. 6. Energy Costs • often small cost of the total budget of building a new home • lack of interest on part of consumers leads to lack of action on part of builders Source: REPP

  28. Possible Solutions • overarching problems: • education • building industry • homeowners • government officials • financial • incentives

  29. Possible Solutions (cont.) • building industry: • continuing education and training for the building industry: • public (HUD, DOE, EPA) • private (NAHB and local HBA) • university-level • expand local programs: • EPA Energy Star • Green Advantage (Florida Energy Extension Service) • UF Center for Construction and Environment • Florida Green Building Coalition (FGBC)

  30. Possible Solutions (cont.) • homeowners: • education on the benefits of buying green • local government • GRU • Local HBA • environmental groups • Green Advantage (FEES) • EPA Energy Star program

  31. Possible Solutions (cont.) • local government: • strengthen building codes • government sets building codes and regulations to: • protect against shoddy craftsmanship • promote public health and safety • ensure compatible land uses • protect community values • why not set codes and regulation to require more “greener” construction practices • Austin, TX • Boulder, CO • Frisco, TX • require municipal building to be green • marketing and technical advice for builders

  32. Possible Solutions (cont.) • local government: • builder incentives: • fast-track permitting • reduced builder fees • homeowner incentives: • GRU • property tax exemption • energy efficient mortgages (EEMs)

  33. Efforts to Develop Green Building Codes and Standards • U.S. Green Building Council • LEED (commercial buildings) • LEEDR (residential) • DOE Home Energy Rating Systems (HERS) guidelines • EPA Energy Star • qualifies homes for EEMs • Florida Green Building Coalition • third draft of standards

  34. Home Energy Rating Systems (HERS) • developed by DOE in1992 • 1993: 17 states had HERS • today: 49 states have HERS • rates the energy-efficiency of new and existing homes • rates homes between 0-100 • qualifies homes for energy efficient mortgages (EEMs) • 80 = EEM • 86 = Energy Star

  35. Home Energy Rating Systems (HERS) (cont.) • home energy rater inspects the home and and measures its energy characteristics: • insulation levels • window efficiency • wall-to-window ratios • heating and cooling system efficiency • solar orientation of the home • efficiency of the water heating system • diagnostic testing: • blower door test (air leakage) • duct leakage test

  36. Energy Efficient Mortgages • mortgage for which either: • underwriting guidelines have been relaxed specifically for energy-efficient features, or • financial incentives for energy-efficiency • new and existing homes • HERS score of 80 or above (1993 MEC) • more than $2.5 billion in federally-supported EEMs have been issued to date • Fannie Mae • Freddie Mac • HUD-FHA • VA

  37. Florida Green Building Coalition (FGBC) • non-profit corporation • mission: “to provide a statewide Green Building program with environmental and economic benefits.” • 5 universities (UF) • green building leaders from around the state • strong presence in Alachua County • latest draft of standards (Appendix B) • will begin certifying homes this summer

  38. Current Status of GB • Smith-Feinstein Bill • proposed January 2001 • tax credits of $750-2000 for homes that are 30-50% more efficient than the minimum requirements of the 2000 International Energy Conservation Code • up to $1,000 for installing solar water heaters • up to $6,000 for installing photovoltaic systems

  39. Current Status of GB (cont.) • U.S. Green Building Council (USGBC) • Leadership in Energy and Environmental design (LEED) – commercial buildings • LEEDR - national standards for residential green building • Frisco, TX • newest “beast” of green building programs • adopts EPA’s Energy Star as a requirement for new residential construction • EPA Green Advantage programs • Florida Energy Extension Service • “Build Green and Profit,” etc.

  40. Current Status of GB (cont.) • EPA Energy Star program • 300 homes certified in Alachua Co. in 2000 • #1 per capita • NAHB guide to green builder programs • 115 page manual for developing a green builder program • designed primarily for use by local HBA chapters • local HBA green building programs • municipal green building programs

  41. Coffee Break!

  42. Green Building Programs How to Design a Local Program

  43. NAHB/EPA Guide • “A Guide to Developing Green Builder Programs” • released in April, 1999 • collaborated effort between the National Association of Home Builders and the Environmental Protection Agency • 11-step program

  44. Step One • determine member and home buyer interest in/basic knowledge of green building • focus groups • builder surveys • home buyer surveys

  45. Step Two • establish a development committee • builders • remodelers • HBA leadership • local government • lenders • realtors • environmental building professionals

  46. Step Three • set objectives of the program • prioritize developmental steps • establish goals • include the community • public sector • private sector • conduct a workshop • obtain feedback

  47. Step Four • determine program partners • government agencies • public utilities • building product manufacturers • non-profit organizations/foundations

  48. Step Five • determine program coverage • type of construction (e.g., residential, commercial, governmental, industrial) • area (e.g., incorporated city, entire county, only certain neighborhoods, only urban core) • builders (e.g., homes, remodeling, light commercial, developers)

  49. Step Six • discuss first year budget and structure of program fees • year 1: cost to develop and implement program • year 2+: cost for staff and advertising; fees for membership

  50. Step Seven • consider the role of existing programs • energy • EPA Energy Star • Edison Electric Institute E Seal • Home Energy Rating System (HERS) • indoor air quality • American Lung Assoc.’s Health House) • waste management • NAHB/KAB Build America Beautiful • energy & resource-efficiency • Good Cents EarthChoice or Environmental Home

More Related