About Us

Top of the Line Services (TLS) is a company with more than 25 years of experience in the business development of janitorial services, especially in window cleaning services in residential areas as well as commercial sectors. The Washington Post and Northern Virginia Magazine both featured Top of the Line pointing out Top of the Line as one of the top competitive companies, in the Washington, Maryland, and Northern Virginia Area. Our personnel is skilled and knowledgeable. Above all, we have the expertise to do both residential and commercial work. Top of the Line Services (TLS) has worked with homeowners and companies in the private sector providing housekeeping services. Furthermore, it has worked in the public field as well performing works for government entities.

Top of the Line Services has everything from the management, tools, equipment, and labor necessary to ensure we perform services in a manner that maintains a satisfactory facility condition and presents a clean, neat, and professional appearance. We have been operating in the market offering excellent customer service and exceeding all requirements entirely and professionally. Our customer base includes commercial businesses in Washington, D.C., Maryland, and Northern Virginia areas such as Bureau of Alcohol, Tobacco, Firearms, and Explosives Building, British Embassy, Ritz Carlton Hotels, Park Hyatt Hotels, Inova Hospitals in NorthernVirginia, U.S.Census Bureau Building, and the National Cemetery Welcome Center are just a few to mention.


Top of the Line Services, LLC was founded in January 2003 by Wilber Loza. His experience in the window cleaning field extends beyond that though; he’d already worked in the industry for ten years before that! Work was so overwhelming that by the end of 2003, we already employed several field workers. In 2005, Wilber enhanced the company and brought it to a new level by integrating janitorial services into the company. His management, customer service, and sales skills for both residential and commercial departments have led to the success of Top of the Line.

Wilber Loza

What We Do

Our experienced cleaning professionals are insured and equipped with the most advanced chemicals, equipment and cleaning products. Top of the Line Services will clean your workplace from top to bottom, professional janitorial services include day time porter services, evening cleaning services, office cleaning, restroom cleaning, breakroom and cafeteria cleaning, trash removal, dusting and damp wiping, vacuum cleaning, sweeping and mopping, spot cleaning, window cleaning, specialty cleaning, emergency cleaning, construction clean up and exterior cleaning. We can do anything you need to make your establishment spotless. Services including interior and exterior window cleaning, screen cleaning, skylights cleaning, glass restoration, paint scraping, chandelier cleaning, gutter cleaning, gutter facing, pressure wash siding, pressure wash deck, and seal deck are part of our expertise and daily performed.

How We Do It

TLS organizes the window cleaning staff into independent work crews managed by field supervisors. These are the first level work supervisors and monitor quality control first-hand. Work crews perform the typical daily routine tasks required by the job site. Residential job sites are standard and need little to no advanced planning, other than knowing the exact address. Commercial work son the other hand is usually more complicated than residential jobs depending on the design shape of the building and its location. For this type of work, we must carefully asses the building structure and architectural features, and its surrounding environment. Consultation with the building managers or owners is paramount to ensure we execute the work safely and successfully.

Due to indoor air quality issues, potential disruptions to workflow and personal property damage, our work crews have been selected and trained in using specific methods, materials, and equipment. We take these precautions to prevent the spread of infection and disease, control dust & odors, preserve fabric, fixtures, fittings, and furnishings to maintain a socially acceptable and safe environment to work and live.


Top of the Line Services is both SBA 8(a), and HUBZone certified, which allows the company to participate in Government opportunities. We want to add that TLS is minority/Hispanic-owned. Because of these certifications, we provide janitorial services throughout various government facilities and agencies.


SBA 8(a) Certified
HUBZone Certified

Contact Us Today!

4222 Fortuna Center Plaza, Suite 144
Dumfries, VA 22025
Phone: 703-730-6100

Richmond Area
Phone: 804-332-6980

2812 Falls Rd, Suite 140
Potomac, MD 20854
Phone: 301-760-3949

Fax 703-496-3635
Email info@topofthelinewindowcleaning.com

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We guarantee to get the job done right the first time and will work hard to make sure you are completely satisfied.

Payments We Accept

We Accept Visa, MasterCard