Best Commercial & Office Cleaning in Janesville, WI
10 companies listed · 4 in Janesville · 1 open 24/7 · 5 open weekends · 8 rated 4.5+
Data verified October 20, 2026
Hagen Tank and Trailer Washouts
Holly's Housekeeping
Engstrom's Cleaning Service
Phil's Electric Drain Service
Van's Building Service
Listed for businesses in and around Janesville, WI, these 10 companies hold commercial cleaning contracts. Contract cleaning is priced off a written scope and a frequency schedule, so two quotes are only comparable when both are working from the same specification.

Area overview: Janesville, WI
4 of the 10 companies we list are based in Janesville; the other 6 serve Janesville from towns including Edgerton (11 mi), Beloit (12 mi) and Clinton (12 mi). 9 of the companies on this page have a rating, from 4.4 to 5.0 across 91 reviews; 8 are rated 4.5 or higher. 1 is open around the clock; 5 are open on Saturdays and 3 on Sundays. 2 show a license on their websites and 1 has a BBB rating of A or A+. Domain records put 3 websites of the companies on this page at ten or more years old; the oldest dates from 2007. 1 offers emergency call-outs and 2 are family- or locally-owned. We have a website on file for 7 of the companies on this page; 5 publish a contact page and 4 list a public email. We count these figures across the companies on this page; distances are straight-line, and hours and prices change, so confirm the details with the company before you book.
Does a contractor need an address in Janesville?
An address in Janesville is given by 4 of the 10 commercial cleaning companies here; the others come from other towns within 20 mi. For nightly work, the supervisor's drive matters more than the office address, since a site that is an hour from the nearest manager gets inspected less often.