This session details the design and construction challenges inherent in a net zero energy remodel and addition to a modest single family residence in Arlington, Massachusetts, completed in winter 2021. The project team sought practical, low cost, and reproducible solutions to meet project goals of net zero energy, minimizing embodied carbon, and electrification. We aspire to broaden the toolset of owners, designers, and builders by sharing our approaches to permit approval, structural design, building envelope, window specification and installation, and HVAC.

Two very different projects – Oak Bluffs Town Hall and The Graphic Lofts – share a common goal to create a passive-house-inspired high-performance building. One building utilizes conventional construction techniques, the other building employs off-site construction strategies. These case studies will review decisions made and lessons learned following each project’s approach. The speakers will compare and contrast the challenges and benefits of on- and off-site construction to realize this common goal.