Committed to Excellence

Shoreline-based Evergreen Window Cleaning & Home Maintenance is a family-owned business committed to excellence. We serve our customers by cleaning windows, gutters, home exteriors and hardscape, and roofs. Kreg Koelling founded Evergreen in 1996. Then the company changed hands in 2010 when Kreg sold to Keith Sherman, his lead field tech at the time.

Keith & Julianne Sherman continued to grow the business with the same think-like-the-customer approach that Kreg had first instilled in the company. Initially, Julianne began in the office while Keith worked in the field with the guys. But the needs of a growing family and Julianne’s passion for homeschooling led her to hang up the office work and turn her focus on the girls. Julianne’s mother, Judi, came aboard at that time to take over the office duties.

At the end of 2012, Evergreen changed again owing in part to a serious personal trial for the Shermans. The second of their four daughters went into renal failure and Keith donated his kidney. While Evelyn improved fairly quickly, Keith’s open surgery made for a difficult recovery. He soon realized systemic changes would need to be made if Evergreen was to continue to grow and thrive. He left the field and began managing the company full time, hiring people who shared the company mission (below). By remaining  committed to excellence and cultivating the habit of seeing our work through our customers’ eyes, Evergreen has become one of the best companies in Seattle’s home services industries. You may see what our customers have to say on Google+, Yelp, Angie’s List, Home Advisor, BBB, and Thumbtack.

Our mission is to increase joy for our customers, our staff, and our community:

For our customers, we aim to increase joy by the consistent quality of our work, the friendly professionalism of our staff, the fairness of our prices, and by doing our best to see our work through their eyes.

We aim to increase joy for our staff by providing a safe, enjoyable work environment, opportunity for advancement, and meaningful work at wages that reflect their outstanding performance.

In our communities, we aim to be an exemplar of good and ethical business practices, an advocate for responsible free-market economics, and good stewards of creation.

Keith and Julianne with their four girls
Keith, Julianne, and the girls


The evergreen tree in our logo is courtesy of Dixie Allen. See more of her work at

Plus Gutter Cleaning, Roof Cleaning, & Pressure Washing