About Us

Window King was founded by Mark Risius with a simple goal: provide reliable cleaning services while treating every customer like a neighbor. Today, that same approach continues to guide our work throughout Boulder and the Denver Front Range.

Trusted Cleaning Services Since 1999

Founded by Mark Risius in 1999, Window King has spent more than two decades helping homeowners throughout Boulder and the Denver Front Range keep their properties looking their best. What started with a commitment to quality window cleaning has grown into a trusted local company offering window cleaning, gutter cleaning, pressure washing, and Christmas light sale and installation.

Based in Boulder, CO, Window King believes great service starts with treating customers and their properties with respect. From the first phone call to the completion of each job, our team focuses on friendly communication, dependable workmanship, and results you can see.

A Local Company You Can Trust

Experience Matters

With more than 25 years of experience, Window King understands what it takes to provide dependable cleaning services for Colorado homeowners. We take the time to do the job properly and pay attention to the details that make a noticeable difference.

Service With Care

We believe professional service should also be personal. Our friendly team works hard to make every appointment straightforward and stress-free while taking care around your home and property.

Quality Results

Clean windows, clear gutters, and well-maintained surfaces can make a big difference in how your property looks and feels. We bring professional equipment, proven techniques, and a commitment to quality to every service we provide.