July 22, 2025 | Noon – 1:30

Virtual

Tickets: FREE
CEUs: Phius & AIA

Shannon Pendleton, CPHC

Sanderson Sustainable Design
Founder

Shannon is the founder of Sanderson Sustainable Design est. 2003 which partners best in class building science with place, community advocacy, and historical context. Offering Certified Passive House design and modeling solutions for clients and teams through listening, prioritizing goals, and sharing proven techniques. Specialties include zero energy, non-toxic, pest-dust-mold free homes for multi-generational, affordable, low carbon buildings. Experienced in custom prefabrication, reconstruction, client advocacy and team building. Assoc, AIA, Greater Philadelphia Passive House Association Co-Founder, Green Building United Passive House Community Member & previous Co-Facilitator. Co-Host for Passive House Accelerator Construction Tech. Serving PA, NJ, and NY.

Ilka Cassidy, CPHC

Holzraum System
Co-founder

Ilka is passionate about Passive House envelope design and building science, focusing on the benefits of natural building materials. She grew up in Germany and received her Diploma of Engineering/ Architecture degree from the RWTH Aachen. Ilka connected to the US during her year at the University of Washington in Seattle where she won a Scholarship to study within the graduate program. Eventually she moved to Philadelphia where she co-founded C2 Architecture in 2005. Through Holzraum System, she has worked to merge the precision and scalability of prefabrication with the use of healthy, low-carbon materials, all while optimizing energy efficiency with Passive House principles. She has guided multiple single and multifamily projects through Phius certification.

Ilka is also committed to expanding knowledge in the industry, serving as co-host of the Passive House Accelerator Podcast and Construction Tech Live events. She is a frequent conference speaker and an active member of Green Building United in Philadelphia as well as NESEA.

Tony Lisanti

Integral Building & Design, Inc.
Managing Director

Tony’s 36+ years of experience includes mechanical, electrical and plumbing design with an engineering firm, serving as a Maintenance Specialist and Account Executive with Con Edison of New York, Director of Energy Sales with Robison Energy and currently serving as Managing Director at Integral Building & Design, Inc. in Nyack, New York.

Tony has certified more than 3000 dwelling units for the EPA Energy Star Program and more than 1000 units for EPA Indoor airPLUS. He has also certified numerous DOE ZERH, Phius+ homes and completed HERS Ratings for IECC compliance

He is a Certified Energy Manager, Phius Certified Rater, Verifier and Phius Certified Consultant (CPHC®), D.O.E. Zero Energy Ready Home Verifier, RESNET Quality Assurance Designee, RESNET Rater Trainer, Certified Green Professional by NAHB, and IECC/HERS Compliance Specialist and has numerous certifications from the Building Performance Institute.

Steve Hessler, CPHC

Holzraum System
Co-founder

Steve is a heavy timber structural designer, project manager and PHIUS+ certified passive house consultant with over 25 years of experience designing, building and managing structural-thermal envelope offsite fabrication projects as well as on-site high performance construction projects. Since 2008 Steve has been combining 3D modeling, integrated project delivery and building science principals to design and manage off-the-grid, net-zero, and passive house projects. Steve received his bachelors in Communications Strategies from the Pennsylvania State University in 1990 before completing a five year apprenticeship program as journeyman and lead restoration carpenter.

A frequent industry speaker and contributor, his award-winning projects span passive houses, net-zero buildings, and large-scale timber structures. His work continues to drive innovation in digital prefabrication and high-performance construction.