About GB3
Our Philosophy
GB3’s commitment to making homes more comfortable, healthy and energy efficient drives our work. Our energy audits give homeowners a customized and comprehensive understanding of how their home works and how their home’s performance can be improved. GB3 prides itself on being a full service company; from the energy audit through improvements, homeowners can rely on GB3 for comprehensive, affordable home energy solutions.
Our Qualifications
- Extensive green building and construction industry experience
- RESNET-certified Home Energy Raters
- LEED Accreditation
- National Association of Home Builders (NAHB) National Green Building Verifier
- United States Green Building Council (USGBC) Member
- Fully licensed and insured
- Habitat for Humanity Volunteer Energy Rater
- EPA Energy Star Partner
After meeting them for the audit, we had a good sense of the depth of GB3’s expertise, as well as their professionalism and ethical standards, so having them perform the follow-up work was a no-brainer.
Denver, Lincoln Park Neighborhood
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Our Co-founders
Bill Lucas
GB3 co-founder Bill Lucas is an experienced green builder and licensed general contractor. He is a licensed RESNET Home Energy Rater, a LEED Accredited Professional, a NAHB Green Building Program Verifier, and a graduate of CSU’s first Green Building Certificate Course.
Originally lured into green building by straw bale homes in the early 1990s, Bill has managed and/or built a number of progressive homes, including two featured on the cover of the Boulder Green Building Journal and one on the front page of Conservation Magazine. Bill holds a BA in Japanese and a BS in Environmental Biology from the University of Colorado. Bill has lived in Colorado since 1972 and currently lives in Northwest Denver with his wife Jennifer.
Grant Swanson
Co-founder Grant Swanson has extensive business and environmental experience. He is a co-founder of the NorthStone Group, a successful Colorado-based management consulting firm. He started his green career working for The Nature Conservancy in Mexico, where he designed carbon offset reforestation projects. He later worked for the Clean Energy Incubator in Austin, Texas helping entrepreneurs launch alternative energy companies.
Grant holds an MBA and an MA in Latin American Studies from the University of Texas at Austin, and is a RESNET certified Home Energy Rater. Grant grew up in Steamboat Springs. He and his wife, Maggie, live in Denver.
Bill and Grant met in the Presidents Leadership Class at the University of Colorado at Boulder, where they are both graduates.