Most Green Hammer clients are interested in creating homes or buildings that are energy-efficient, comfortable and resilient in the era of climate change. One way to ensure those goals are achieved is through third-party building certifications.
A third-party certification means that an independent organization verifies a home meets specific performance standards for energy efficiency, health, durability and environmental impact. Rather than relying solely on the builder’s claims, these programs provide objective testing and documentation that the home performs as designed.
Why homeowners pursue certifications
Third-party certifications offer several benefits for homeowners:
- Energy efficiency: Lower energy use and utility costs
- Comfort: Consistent temperatures, fewer drafts and better humidity control
- Healthy indoor air: Improved ventilation and reduced pollutants
- Durability: Building systems designed to last longer and perform better
- Environmental impact: Reduced carbon emissions and resource use, less waste
- Long-term value: Verified performance that can support resale value
In most cases, a certified home also undergoes independent testing, such as blower-door testing to measure air tightness or verification of insulation and ventilation systems.
Overview of certifications for high-performance homes
Earth Advantage
A program developed in the Pacific Northwest that certifies buildings perform well in five categories: energy efficiency, healthy indoor air quality, resource efficiency, environmental responsibility and water conservation.
Earth Advantage offers residential green building certifications, including Earth Advantage Home Certification (Silver, Gold and Platinum), Earth Advantage Zero Energy and Earth Advantage Zero Energy Ready Certification.
Zero Energy (Living Future, LEED)
A zero energy building is a building that produces as much energy as it consumes over the course of a year. Projects that demonstrate zero energy performance can earn certifications, such as Living Future Institute Zero Energy and LEED Zero.
Passive House
Passive House buildings, which meet one of the most stringent energy-efficiency standards in the world, dramatically improve indoor air quality and thermal comfort while reducing energy use. A typical Passive House uses 70%–90% less heating and cooling energy and 70% less total energy than a standard home built to meet code.
Living Building Challenge (LBC)
This rigorous certification focuses on regenerative buildings that produce as much or more energy and water than they use, and that operate in harmony with nature. To achieve Living Building certification, a project must meet 20 imperatives over a minimum of 12 months of continuous occupancy.
Living Future Petal & Core Certification
Core certification is the entry point for building owners to begin working toward fully regenerative building practices. Core is a performance-based standard and the launching point for pursuing Petal or Living Building designation under the Living Building Challenge, administered by Living Future.
Leadership in Energy + Environmental Design (LEED)
LEED is the most widely recognized global standard and certification for green buildings. Projects pursuing LEED certification earn points across several areas, including energy and water efficiency, indoor air quality, transportation and more. Projects can achieve one of four LEED rating levels: Certified, Silver, Gold and Platinum.
Forest Stewardship Council (FSC)
FSC is an international nonprofit dedicated to promoting responsible management of the world’s working forests. FSC provides independent certification that verifies wood products come from responsibly managed forests that protect wildlife, water quality and local communities. Full project certification is also available from FSC for new builds, renovations and even temporary structures like event stands.
Zero Carbon
Building construction and operations currently contribute nearly 37% of global greenhouse gas emissions. That’s why we are committed to reducing carbon emissions at every stage — not just through materials and construction practices, but through long-term operations. While achieving and verifying zero carbon emissions is complex, many of our buildings significantly reduce carbon emissions and are considered low-carbon buildings.