Cleaning Mirror

Welcome to Capital Building Services, Inc.

Your Satisfaction Is Our Priority Since 1979


About Us

Reliable Cleaning Service

Since Donald Nguyen opened our doors in 1979, we’ve been committed to providing service of the highest quality, paying particular attention to working efficiently while keeping the lines of communication with our clients clear and concise. We are a certified minority owned company providing full service custodial maintenance for commercial buildings in government, public and private sectors. 

Our CEO William Nguyen has continued the legacy and mission at Capital Building Services, Inc. by providing high-quality services in a timely manner. Our team caters to each project’s specific needs to ensure excellence. We value every client relationship and our quality service is backed by our experienced and dedicated management team. 

Cleaning the Floor

Our Testimonials

I have found William and his crew to be extremely dependable...his company provides by far the best and  most professional service I have seen.

Gary P. 
Assisant Manager, Fairfax County

They have met every request that I have asked of them and I am well pleased...overall they are doing first-rate work; I hope it continues for a long time to come.

Michael E.
Assisant Manager, Fairfax County Health Dept

Most impressively, Mr. Nguyen makes personal site visits to the branch... he actively seeks my feedback on ways service can be improved to the building.


Barbara S. 
Assisant Manager, Kings Park Library

The new cleaning contractor come in and cleaned our bathrooms better than it has been cleaned in 10 years!

Linda H.
Juvenile and Domestic Relations District Court


Get in Touch

6083 Arlington Boulevard
Falls Church, VA 22044


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