High Performance & Green Building
What is a high performance home and how does it differ from a green home? The term green evolved to identify all the aspects that surround an environmental issue or cause. The term high performance home is also green, but it is much more than that. A high performance home is one that is constructed with materials using methods and techniques that produces a home which performs better in all aspects to render a home that is more comfortable, more energy efficient, safer, sustainable over time, less costly to operate and maintain while providing a living environment that is simply healthier than a conventional home.
High performance homes don't just happen. A truly high performance home is the end result of a lot of careful thought, consideration, and planning that helps homeowners design their home to shape their future. The goal is to integrate and balance the elements that make a high performance home:
A high performance home is resource-efficient:
- Energy efficiency - tailored to the climate - reduce and conserve energy while reducing the pollution footprint
- Water efficiency - reduce the costs of water treatment and wastewater
- Waste management lessen the impact on landfills
- Pollution prevention - protect the ecosystem
- Favoring sustainable - use local resources efficiently
- A high performance home is healthy:
- Control indoor air quality - minimize mold, dust mites, and combustion pollutants
- Universal design - safe, functional, accessible - accommodate all ages and stages of the life cycle
A high performance home is durable:
- Decay resistance - manages and controls moisture, reduce or prevent deterioration
- Natural hazard resistance - hurricanes, floods, fire, etc.
- Pest resistance - protect against termites and other damaging insects
- A high performance home is convenient:
- Functional and family-friendly - provides efficient flows
- Low maintenance - reduced cost and time needed to maintain value and appearance
- Advanced wiring - ready for the information age
- A high performance home is practical
- Cost effective - saves money in the long term - lower lifecycle costs
- Feasible - reduce the costs of making the change.
Build it Green
Jim Pitcher has qualified for certification through Build It Green program. Professionals listed as Certified Green Building Professionals (CGBPs) have completed an in-depth training course in green building practices. The certification program is administered by Build It Green and is open to all California building professionals (architects, contractors, engineers, interior designers, real estate professionals, solar contractors, specialty trades, etc.)
Individuals are required to participate in a 16 hour course that provides a comprehensive overview of the core principles of green building: energy efficiency, resource conservation, and improved indoor air quality. Those who complete the class and pass the final exam are then recognized as Certified Green Building Professionals, and continuing education credits are required to keep certification current.
Energy Efficiency
Improved comfort and lower energy bills (Source: Build It Green)
New houses in California must be built to the most stringent energy code in the country, but given the state's projected population growth, even this may not be enough to keep demand for energy in check. Generation and use of energy are major contributors to air pollution and global climate change. With homes accounting for roughly 31% of the electricity consumed in the state, it is clear that homebuilders have a significant role to play in helping our society address energy-related concerns now and in the coming decades.
Energy efficiency is the cornerstone of every green home. Improving energy efficiency and using renewable energy sources are effective ways to reduce the potential of energy supply interruptions, improve air quality, reduce the impacts of global warming, and slow the rate at which we need to build new power plants.
Energy efficiency also makes good sense for homeowners: an energy-efficient house saves money by reducing utility bills year after year, and provides other valuable benefits. Better insulation, for example, reduces uncomfortable drafts, and double-pane windows make for a quieter home.
Examples:
- Passive solar heating, overhangs on south windows, deciduous trees on west and south
- Upgraded insulation, SIPs, advanced air infiltration reduction practices (air sealing), Low-E double-pane windows
- Compact fluorescent lighting, low energy-using major appliances
- High-efficiency furnace or zoned, hydronic radiant heat; Tankless water heater
- Whole house fan, solar attic fan
- Solar water heating, photovoltaic system (solar panels), wind turbines
Indoor Air Quality
Safe, pleasant and healthy homes (Source: Build It Green)
On average, Americans spend 90% of their time indoors, yet the air in new homes can be ten times more polluted than outdoor air, according to the U.S. Environmental Protection Agency. Children are particularly vulnerable when it comes to air pollution. A report in the New England Journal of Medicine states that 40% of children will develop respiratory disease, in part due to the chemicals in their homes.
A common source of indoor air pollution is the offgassing of chemicals found in many building materials. Kitchen cabinets, countertops, shelving and furniture may be made from particleboard or medium density fiberboard. These pressed-wood products are typically made with adhesives that release urea formaldehyde a known human carcinogen, into the home for years after installation. Also, many paints, floor finishes, adhesives and sealants emit unhealthy volatile organic compounds (VOCs). That "new house smell" is a telltale sign that there are harmful chemicals in the indoor environment.
Fortunately, the building products industry is responding to these indoor pollution problems by developing safer products, including low-VOC paints, cleaners and adhesives. These products are now commonly available from most major suppliers at costs comparable to conventional products. California also now has specifications available for some materials to assure that they are low emitting and safe.
Poor indoor air quality is also often caused by biological contaminants, such as mold that grows as a result of moisture infiltration due to inadequate ventilation, poor design and maintenance, and other factors. Dust, another major source of air pollution inside homes, can be reduced by installing permanent front door walk-off mats and by using hard surface flooring materials such as natural linoleum, bamboo, wood or wood alternatives, or concrete.
Examples:
- Low or no-VOC paint, wood finishes, & adhesives; avoid products with added formaldehyde
- Mechanical ventilation system, heat recovery ventilation unit, sealed-combustion furnace and water heater
- Range hood and bath fans vent to outside, bath fans automatically controlled with a timer or humidistat
- No wood-burning fireplace, or retrofit wood-burning fireplace with EPA certified wood stoves/inserts
Water Conservation
Protection and conservation of water supplies (Source: Build It Green)
Water is another critical resource. California residences use 5.6 million acre-feet of applied water annually. Our prosperity and ability to meet the needs of our growing population hinge on having adequate supplies of clean, fresh water. Homes built and landscaped to use water wisely make a tremendous contribution to protecting our shared resources. An added benefit is lower expenses for the homeowner. Today's builders can take advantage of a new generation of cost-effective, high efficiency appliances and landscape water management systems.
Examples:
- Ultra-low flush or dual-flush toilets, fixtures with below standard flow rates (showers<2.5gpm, faucets<2.2gpm)
- Grey water system, rainwater harvesting system, low-water landscaping, native landscaping, high efficiency irrigation system, smart irrigation control, no irrigation
- Living "green" roof, stormwater management (e.g. bio-swales, permeable paving)


