Design charrettes are critical to one of the signature deliverables of HDC’s Exemplary Buildings Program: a series of guidelines that facilitate our sector’s ability to achieve Washington state’s building performance mandate before the 2031 deadline.

Our second charrette took place on June 4, 2020. It zeroed in on a component that’s critical to achieving ultra-efficiency in new multifamily buildings: balanced ventilation with heat recovery.

( Check out the product of our first design charrette: “Guidelines for Wall Assemblies 1.0” )

We admit it: Imagining a charrette… with nobody in the same room… was odd. Nevertheless, we are in a time of reimagining, and neither the challenges of social distancing nor the idiosyncracies of web conferencing lessened the commitment, collegiality, innovation, and productivity of our participants.

The virtual charrette on balanced ventilation with heat recovery was expertly facilitated by task force members David Reddy of O’Brien360 & Joe Giampietro of JGA Consultants. We’re grateful to charrette sponsors  The Bullitt Foundation & Edwards Mother Earth Foundation (whose 2019 support helped us launch our program and whose 2020 support is helping us grow it ).

Kudos to everyone involved!


PLEASE NOTE: These slides are preliminary inputs to the process that will yield published guidelines supporting full implementation. We will announce release of those guidelines soon.

The following images give you a small glimpse of the important work that took place in June’s design charrette.

About Our Design Charrettes

HDC’s Exemplary Buildings Program, led by a task force of remarkably committed local thought and practice leaders, champions development of housing that is simultaneously healthy, safe, ultra-energy-efficient and affordable.

We believe having standardized practices in place will help us more consistently and cost-effectively achieve our performance goals.

To define those standardized practices, we’re hosting a series of intensive design charrettes focused on several technical areas (Balanced Ventilation & Heat Recovery; Domestic Hot Water & Water Management; Healthy Building Materials; Early Integrative Design; Solar Integration; and Wall Assemblies). Each charrette will produce a set of recommended guidelines for that particular technical area.

Balanced Ventilation with Heat Recovery Charrette: Updated presentation slides available