Legan Construction & Remodeling
“Legan was there with the insurance company and walked us through the process till the repairs were completed”
Best General Contractors in Janesville, WI
21 companies listed · all 21 in Janesville · 1 open 24/7 · 1 open weekends · 18 rated 4.5+
Data verified October 21, 2026
JC Builders Inc
“The whole staff is super friendly and a joy to work with.”
Marklein Builders Inc
“We had Marklein for our general contractor building our new home and were absolutely pleased with the entire process.”
Advanced Construction
“They did a great job on trim and door casings and even had a device/app that helped me paint match flawlessly without having to repaint an entire wall corner to corner.”
Richards Construction
Distinctive Craftsman LLC
Listed for homeowners in and around Janesville, WI, these 21 companies take on multi-trade work, from a single addition to a whole-floor renovation. What each one says about licensing, hours and the work it takes on comes from its own website; ratings and quotes come from public reviews.
Area overview: Janesville, WI
All 21 companies we list here are in Janesville itself. The companies on this page are rated from 3.0 to 5.0 across 211 reviews; 1 has 50 or more reviews and 18 are rated 4.5 or higher. 1 is open around the clock and 1 is open on weekends. 6 have a BBB rating of A or A+. 15 have ten or more years of experience, the longest 62 years. 1 offers emergency call-outs; 2 offer financing or payment plans; 6 give free estimates and 1 is family- or locally-owned. We have a website on file for 19 of the companies on this page; 16 publish a contact page and 10 list a public email. We count these figures across the companies on this page; hours and prices change, so confirm the details with the company before you book.
Do any of these companies quote without charging?
The free estimate promises less on a multi-trade job, and it is advertised by 6 of the 21 companies here. Free normally buys a walk-through and a ballpark figure. A real price takes measuring, subcontractor pricing and desk time, so design-build firms often charge for that stage and credit it against the work if you sign.
Evergreen Designs Inc
“All of the details from amenities to finishes were met and exceeded our expectations.”
JP Cullen
JG Innovations
Aquatic Innovators LLC
“Shawn and Dennis not only fixed the leak in one day but rebuilt the reservoir area better than it was.”
Helgesen Properties
Progressive Construction Services
“I would recommend Progressive Construction Services.”
Post Builders
“Our addition was built better than we could have ever imagined with no hiccups.”
S & S Enterprise
“Bob with S&S is very knowledgeable and a great resource to know for construction needs in Janesville, WI!”
Guenther Construction LLC
DBR Builders Inc
“Thank u agin Todd for the BEAUTIFUL and Accessible bathroom you gave my mother she LOVES it.”
Drake Construction and Restoration
“His pricing is fair and they're a great group of guys whom I would trust with any job that needs done”
Kincade Construction and Flooring
“They showed that they cared about us looking for the best way of doing things, great quality materials, and perfect finishing.”
Paulson Kimball Construction LLC
Diversified Construction
Prairie Craftsmen Inc
Why these companies made our list
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