About Ascent Building Service

Who We Are

At Ascent Building Service, we help commercial property managers maintain their buildings as spotless, safe, and professional as possible.

Founded in Chicago and now proudly serving St. Louis, Kansas City, Minneapolis, and the surrounding Midwest, we specialize in high-rise window cleaning, commercial power washing, and exterior maintenance for properties that demand excellence.

From Class A office towers and corporate campuses to medical centers and car dealerships, our mission is simple — deliver reliable service, unmatched safety, and pristine results every time.

Mission

To provide property managers with dependable exterior maintenance solutions that protect their assets, enhance curb appeal, and ensure long-term value — all through safe, sustainable, and ethical practices.

Why Commercial Property Managers Trust Ascent

  • Safety-First Approach – Every technician is OSHA-compliant and IRATA-certified, with rigorous safety inspections before every job.
  • Experienced Teams – Decades of combined experience across Chicago, St. Louis, Kansas City, and Minneapolis.
  • Eco-Friendly Practices – We use biodegradable, low-impact cleaning solutions and runoff control systems.
  • Tailored Service Plans – Customized cleaning schedules designed for multi-property portfolios and high-traffic environments.

Transparent Communication – Clear proposals, detailed project updates, and no hidden fees.

SAFETY

EXPERIENCED

CONSCIOUS

ETHICAL

Rope access window cleaners working on a glass high-rise building in Kansas City
Two Ascent Building Window Wash employees working on the high-rise apartment window cleaning with a squeegee
High rise rooftop view of Chicago
Window washer checking harness & safety gear before cleaning high rise windows
High-rise window cleaners climbing on a building in Chicago
Ascent Building Window workers cleaning high rise window
Ascent Building Window Workers beginning their cleaning duty at a mid-rise retail apartment.
Ascent Building Window Washer's working on cleaning high windows
Window washer descending down a high rise building in Chicago
Crew uses lift to clean windows inside a grocery store
Almost done with a window washing job
Technicians performing high rise building window cleaning on a Chicago skyscraper facade
Window washers on a high rise building
Window cleaning at the top of a mid rise retail building
Ascent window washer checking their safety equipment before cleaning a Chicago high rise.
Professional high-rise window cleaner working on a luxury Chicago apartment building with city skyline view.
Window cleaner using a squeegee to clean high rise exterior windows in Chicago
Window washer with all his safety gear getting ready to clean a Chicago skyscraper
Commercial window cleaners washing high rise exterior windows