Kevin Spence Architectâ PLLC, AIA (KSA) is a Seattle-based architectural practice and design studio providing personal and responsive service since 1998.

Green building expertise tailored to the needs of homeowners living in the Northwest. 

Now building in Sedro-Woolley and the Skagit Valley! We develop and build healthy, high performance homes located in neighborhoods that are close to bicycle and transit corridors. We strive to make your utility bill an insignificant part of your life.

At Washington RetroFoam, we insulate the walls of existing homes. About half the homes in the Pacific Northwest over 40 years old have no insulation in their walls. Others have highly degraded insulation. We use a foam that is harmless to touch, non-volatile, and Class One Fire Rated. We can typically insulate a 2,000-square-foot home in less than five hours for less than $4,900, usually driving a payback in less than three years.

Cedheco is a provider of sustainable building materials. We wanted to do our part to mitigate climate change so with the many years of combined construction experience, it made sense to turn our focus to BUILDING MATERIALS. Specifically SUSTAINABLE PRODUCTS such as BAMBOO and CORK FLOORING, FSC CERTIFIED MATERIALS, RECLAIMED WOOD and more. Not only are these products eco-friendly, but are durable, easy to maintain and provide a warm, inviting environment!