Check below for a list of 21 Acres recommended building and housing-related companies and products.  Our LEED Platinum-certified building gave us great opportunities to get to know many of the local, sustainably-minded companies.  Find resources for commercial and residential buildings, inside and out.



Nancy Henderson and Michelle Rosenberger, ArchEcology, LLC


Construction Management

Ryan Meno – RAFN Construction, Building Project Manager


Civil Engineering Design

Coughlin, Porter, Lundeen


Land Use

Anna Nelson – Van Ness Feldman GordonDerr

Allen Wycoff – Terracon

Bart Balko – Coughlin Porter Lundeen, Inc.

Brian Heather – Solterra

Howard Lamb – Sunergy


Structural Consultant

Michael Nouwens


Bidder-design Mechanical and Electrical Systems

Kirby Electric – Renton, WA

United Systems Mechanical – Seattle, WA

Clearview Mechanical (plumbing) – Seattle, WA

Earthheat Geothermal Systems – Duvall, WA

Glendon Biofilter Systems – Gig Harbor, WA

AAA Drainfield Design – Snohomish, WA


  • A&R Solar
    A&R Solar is a leading solar installation company in the Pacific Northwest (WA and OR); they specialize in residential and commercial solar photovoltaic and battery storage systems. external link
  • Ace Hardware
    Ace Hardware provides quality materials to help customers upkeep their homes for lower prices than national brands. All Ace Hardware stores are run by local, independent entrepreneurs. The company also does work in the community with the American Red Cross and Children's Miracle Network Hospitals. external link
  • Arqlite
    Arqlite turns plastic waste into efficient construction materials. external link
  • Bedrock Industries
    Bedrock Industries sells glass tiles for home and garden décor; all of their tiles are made by hand in their own plant from 100% recycled glass. They don’t use any pigments in their glass and use 100% recyclable materials for product packaging and shipping. Bedrock Industries also operates several community-based programs including a bottle drive and student tours of their plant. external link
  • ConsumerAffairs - Solar Financing Companies
    ConsumerAffairs’ website explores options for financing solar installation and maintenance projects. While solar energy is cheaper now than ever before, it is still not widely affordable for the average homeowner. This is where solar financing companies come in! external link
  • Earthwise Architectural Salvage
    The Earthwise mission is to preserve Seattle's architectural past by salvaging reusable building materials and architectural features that would otherwise be headed for the landfill, and offering them for sale to the community. external link
  • Entero Design
    Entero Design is a sustainable lifestyle company that offers healthy home furnishing products, interior design services, and a large selection of sustainable options for flooring, countertops, cabinets, wall and window treatments, etc. external link
  • Green Depot
    Green Depot is the nation's leading supplier of environmentally friendly building products, services, and home solutions. The company's mission is to make green building products readily accessible, affordable, and gratifying so that sustainable practices can easily be adopted into standard construction operations. external link
  • Green Home Solutions
    Green Home Solutions is a Seattle based, family owned and operated eco-friendly building product supplier. external link
  • Habitat for Humanity
    Habitat for Humanity ReStores are nonprofit home improvement stores and donation centers that sell new and gently used furniture, home accessories, building materials, and appliances to the public at a fraction of the retail price. Proceeds from these stores are used to build homes, community, and hope locally and around the world.  external link
  • MaterialDistrict
    MaterialDistrict is the world’s leading match-making platform in the field of innovative materials. R&D- and design professionals of all industries use MaterialDistrict to discover new material solutions. external link
  • McLendon Hardware
    McLendon's is a privately owned, local hardware business that often gives back to the community, donating to local churches, schools, etc. Local, privately owned stores. external link
  • Northwest EcoBuilding Guild
    The Northwest EcoBuilding Guild is a community of builders, designers, suppliers, homeowners, and partners concerned with ecological building in the Pacific Northwest. The Guild empowers people through education to transform the built environment for long term sustainability, they provide open-source educational materials to the construction industry and the general public in order to encourage building practices that dramatically reduce carbon emissions, are self-sustaining, contribute to local economies, and create optimal conditions for human health and community. external link
  • Second Use
    Second Use helps contractors and homeowners recover reusable building materials from their remodeling and demolition projects and finds new homes for the materials through their retail outlet. external link
  • Solarpedia
    Solarpedia is a website devoted to sustainable architecture, building and the use of renewable energy in the built environment. It is continually growing with approximately 100,000 unique visitors per month from 200+ countries. external link
  • Sunflare
    Sunflare manufactures flexible, lightweight, affordable solar panels that can be applied to any roof! They don't use toxic chemicals to produce their panels and recycle all spent materials. external link
  • The ReStore
    The ReStore encourages the use of salvaged and reclaimed building materials and cuts down on travel and construction costs by encouraging/educating costumers in DIY-construction. external link
  • Westhill Inc.
    Westhill Inc. is a local home construction and repair business that focuses on the people, the process, and the finished product. external link