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Certified Passive House Consultant

Building Green, Commercial, Custom Residential, Multifamily & Mixed-Use

Certified Passive House Consultant

Our team includes Passive House certified (CPHC) professionals.

The Passive House approach creates an extremely energy-efficient building in which a comfortable interior climate can be maintained without active heating and cooling systems. This is due to a super-insulated envelope, advanced detailing, heat recovery ventilation, and high-performance windows.

The term passive house is relatively new (the first PassivHaus was built in Germany in 1991), but simply put, Passive House is based on a set of design principles used to maximize energy efficiency. And, name aside, the approach can be applied to commercial and multifamily buildings as well as single-family residences.

Board & Vellum is unique in that Managing Principal and Founder, Jeff Pelletier, was one of the first Certified Passive House Consultants in Washington State, and we have a growing number of Passive Housecertified team members working on both custom residential and multifamily projects.

This forward-thinking and science-based approach to sustainability is changing how the public thinks about sustainability, and Board & Vellum is proud to be on the forefront. We love how the original intent of greening the built environment is reflected here: maximize your gains, minimize your losses.

Learn more at Passive House Institute US (PHIUS).

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Would you like to learn a little more about us and what we do?


Who are we, anyway? For starters, we are a close-knit team of creative professionals, collaborating on architecture, interior design, and landscape architecture. We love what we do, and we have fun doing it. As your advocates, our goal is to help you realize a project that you love.


Our design services encompass architecture, interior design, and landscape architecture, with teams specializing in projects across the spectrum, from single-family homes to multifamily and mixed-use buildings, and from boutique commercial spaces to civic spaces, like parks. We love designing the integrated fabric of structures, spaces, and places that create vibrant neighborhoods.

Considering a project? Or, just curious about something?

Send us your questions about design, architecture, interiors, landscape, LEGO rooms… Anything, really. We’re always eager to meet new people, and we’d love to get to know you, your project, and your goals.

Get in touch.