Attic Projects

Attic Projects has been a Kent-based contractor for an extraordinary 67 years, making them one of the longest-operating home services companies in Washington state. Their expansion into solar installation builds on decades of experience working in residential attics, crawl spaces, and on rooftops, giving them an intimate understanding of home building envelopes that pure solar companies rarely possess. When a company has spent nearly seven decades working on and inside homes, they develop an intuitive understanding of structural conditions, ventilation, and weatherproofing that directly translates to better solar installations.

The company's 4.9-star Google rating from 751 reviews represents one of the larger review volumes among Washington state solar installers, providing a statistically robust measure of customer satisfaction. Reviewers frequently note the professionalism and knowledge of their installation crews, the quality of their roof penetration work, and their attention to maintaining the home's weather integrity throughout the solar installation process. That last point matters more in the Pacific Northwest than almost anywhere else in the country, where rain is a near-constant consideration.

Attic Projects serves homeowners across the Kent, Renton, Auburn, and greater South King County area, extending their reach throughout the southern Seattle metropolitan region. Their approach to solar installation reflects their home performance heritage: before recommending a solar system, they can assess insulation levels, air sealing opportunities, and ventilation conditions that affect a home's overall energy consumption. This whole-home perspective often leads to more accurately sized solar systems and better overall energy savings than a solar-only analysis would produce.

Their 67 years of continuous operation speaks to a level of business stability and community trust that few companies in any industry can claim. In the solar market, where company longevity is particularly important given 25-year warranty obligations, Attic Projects' multi-generational track record provides a degree of confidence that the company will be around to honor its commitments long after the installation is complete.

With a composite score of 73.8 out of 100, Attic Projects holds the third-ranked position in Washington for 2026.