About Alliance Building Services
Founded in 2006 in Bellevue, Washington, we were created with a clear vision: to deliver exceptional quality and value through reliable, professional building maintenance.
Our Story
What started as a small operation in Bellevue has grown into one of the region's most trusted building services providers. Today, we serve more than 250 accounts throughout Washington State, from commercial office buildings and high-tech campuses to industrial facilities, medical centers, and retail environments. Our growth hasn't changed who we are. We're still locally owned, still committed to the same values that got us here: do quality work, treat people right, and show up when you say you will.

What Sets Us Apart
We believe in building partnerships, not just service contracts.
Specialized Expertise
Each division is staffed by experienced specialists who bring professionalism, consistency, and attention to detail to every job.
Customized Programs
We work with you to develop maintenance programs tailored to your property's unique requirements and budget.
Comprehensive Services
From janitorial and window cleaning to pressure washing and building restoration. One partner for all your needs.
Proven Results
Our reputation for excellence is built on dedication, innovation, and consistently delivering what we promise.
Our Leadership
The people behind the Alliance Standard.
Gavin Yost
President & Owner
Founded Alliance in 2006 and built it from the ground up. Previously managed a $12M operation with over 460 employees. Drives the "Alliance Standard", a proactive, responsive service model focused on long-term client retention and sustainable growth.
Scott Smith
Vice President & Principal
A principal since 2007 with deep roots in the industry, formerly a Regional Manager for a global equipment manufacturer. Holds IICRC certifications in both hard and soft floor care. Oversees Alliance's specialty teams to ensure technical excellence.
Brandon Burton
General Manager of Operations
Nearly 20 years managing custodial teams for premier commercial environments. Former U.S. Marine Corps Sergeant. Brings a disciplined, detail-oriented approach to every janitorial program, ensuring the highest standards of excellence.
Let's Build a Partnership
We help you enhance and maintain your building's image, attracting new tenants, retaining existing ones, and creating a clean, welcoming environment for all.