Janesville, WI

Find the Best Contractors in Janesville

Discover top-rated home service professionals in Janesville, Wisconsin. Browse 200 verified contractors for roofing, HVAC, plumbing, and more.

200

Contractors

4.9

Avg. Rating

🏠Get Competitive Quotes from Manually Vetted Contractors

Find the Right Contractor in Janesville

Answer a few quick questions and we'll help you find the contractor that fits your needs, location, and availability.

Janesville, WI

Step 1 of 2

What service are you looking for?

100% FreeNo CommitmentTop-Rated Contractors

Top Contractors in Janesville, WI

Showing 1-20 of 200 contractors

Stratton & Sons Inc

Stratton & Sons Inc

Janesville, WI

5(4 reviews)
SidingPaintingDecks & Patios
Hours
Visit Website
Don-Martin Heating, Cooling & Geothermal Inc.

Don-Martin Heating, Cooling & Geothermal Inc.

4101 Commercial Dr #180, Janesville, WI 53545

5(26 reviews)

"Clay was able to diagnose the issue and had it fixed in about an hour."

HVAC
Hours
Visit Website
Stearns Construction

Stearns Construction

6239 W Buggs Rd, Janesville, WI 53548

5(1 reviews)
SidingBathroom RemodelDrywallTile Installer+1 more
Hours
Visit Website
Molitor Masonry, LLC. (Janesville)

Molitor Masonry, LLC. (Janesville)

Janesville, WI

5(6 reviews)

"Exceeded expectations and had top notch customer service!!"

SidingMasonry
Hours
Visit Website
608 Handy Man, LLC.

608 Handy Man, LLC.

Janesville, WI

5(9 reviews)

"Job was done neatly and price was very reasonable."

SidingPaintingDecks & PatiosDrywall+1 more
Hours
Visit Website
J. C. Heating and Cooling, Inc.

J. C. Heating and Cooling, Inc.

300 S River St, Janesville, WI 53548

5(385 reviews)

"Called them up and within 45 minutes I had a crew here with a new furnace!"

HVACElectricalGeneral ContractingHome Builder
Hours
Visit Website
Flooring Inspirations

Flooring Inspirations

2863 Liberty Ln, Janesville, WI 53545

5(61 reviews)

"Great clean and timely delivery and installation, very good value and price!"

WindowsFlooringTile Installer
Hours
Visit Website
Rock County Sealcoat

Rock County Sealcoat

Janesville, WI

5(76 reviews)

"They are fast and on time and the crew does a very good job."

SidingPaintingLandscapingConcrete+1 more
Hours
Visit Website
Renewal by Andersen of Janesville

Renewal by Andersen of Janesville

20 S Main St #25, Janesville, WI 53545

5(9 reviews)

"Cole S. and Devin P. did a great job of installation."

WindowsSidingGeneral ContractingHome Builder
Hours
Visit Website
Rapid Renovation LLC

Rapid Renovation LLC

Janesville, WI

5(13 reviews)

"Their team of professionals was knowledgeable, friendly, and efficient."

SidingKitchen RemodelBathroom RemodelConcrete+2 more
Hours
Drake Construction and Restoration

Drake Construction and Restoration

2204 Mole Ave, Janesville, WI 53548

5(2 reviews)

"Him and his crew are hard-working perfectionists."

WindowsKitchen RemodelBathroom RemodelPainting+3 more
Hours
Visit Website
Jake of All Trades - WI

Jake of All Trades - WI

Janesville, WI

5(5 reviews)

"Jake has incredible attention to detail."

RoofingKitchen RemodelBathroom RemodelPainting+4 more
Hours
Visit Website
Badger (EC) Electric Construction

Badger (EC) Electric Construction

Janesville, WI

5(5 reviews)

"He works very efficiently and every thing looks great when he is done."

Electrical
Hours
AMCL Exteriors

AMCL Exteriors

Janesville, WI

5(21 reviews)

"Cristain and his crew did an outstanding job on my extensive hail damage."

RoofingWindowsSidingGeneral Contracting
Hours
Visit Website
S & S Enterprise of Janesville LLC

S & S Enterprise of Janesville LLC

110 N Terrace St, Janesville, WI 53548

5(6 reviews)

"We are very happy with the finished product!"

SidingKitchen RemodelBathroom RemodelPainting+5 more
Hours
Visit Website
Tree Wise Men LLC

Tree Wise Men LLC

4332 E County Rd O, Janesville, WI 53546

5(665 reviews)

"The crew was fast and efficient, they really made the whole job look easy."

RoofingLandscapingTree Services
Hours
Visit Website
Guenther Construction LLC

Guenther Construction LLC

925 Harding St, Janesville, WI 53545

5(1 reviews)
WindowsSidingKitchen RemodelGeneral Contracting+1 more
Hours
Post Builders

Post Builders

4321 Saratoga Dr, Janesville, WI 53546

5(5 reviews)

"Absolutely amazing workmanship."

SidingKitchen RemodelBathroom RemodelDecks & Patios+3 more
Hours
Visit Website
Mgh RoofingLlc

Mgh RoofingLlc

Janesville, WI

5(6 reviews)

"They did an excellent job, very thorough and high quality work."

Roofing
Hours
Hoff Plumbing Inc

Hoff Plumbing Inc

4944 W Brown Deer Ln, Janesville, WI 53548

5(5 reviews)
Plumbing
Hours
🏆

Top Rated Contractors 2026

Janesville, WI

Every contractor shown for Janesville, Wisconsin is listed with the rating and review count from its public Google Business Profile, so you can compare local professionals on the same basis. Businesses marked as claimed have confirmed their own details, which is not the same as a licence or insurance check. Confirm licensing and insurance directly, then request at least three written estimates before you hire in Janesville.

Frequently Asked Questions

Common questions about finding contractors in Janesville

Prices in Janesville depend on the trade, the size and complexity of the job, and the materials you choose. Small repairs often start in the low hundreds of dollars, while full replacements such as a roof, HVAC system, or kitchen can run from several thousand dollars upward. Request at least three written estimates for the same scope so you can compare local pricing fairly.

Start with the listings on this page, then confirm the licence directly with the licensing board that covers Wisconsin. Requirements vary by trade: some states license general contractors, while others license only electrical, plumbing, and HVAC work. Ask for the licence number and verify it yourself before signing anything.

Most listings in Janesville are aggregated from public business data, including the Google Business Profile rating and review count shown on each page, and are not individually inspected by us. A listing marked as claimed simply means the owner has confirmed control of the business record; it is not a licence or insurance check. Always verify licensing, insurance, and references before you hire.

Costs in Wisconsin depend heavily on the trade and the project. Labour rates vary by region, licensed trades such as electrical and plumbing usually cost more per hour than general labour, and emergency or after-hours work carries a premium. Statewide averages are only a starting point; get itemized quotes from local contractors for your exact scope.

Permit rules are set by the local authority that covers Janesville. Structural work, additions, and most electrical, plumbing, HVAC, and roofing replacements require a permit, while some cosmetic work does not. Ask who is pulling the permit and confirm it is issued in the correct name before work starts, because unpermitted work can complicate resale and insurance.

A deposit of roughly 10-30% of the contract price to cover materials is common in Janesville, with the balance tied to milestones in a written contract. Be cautious of anyone demanding full payment up front, large cash-only payments, or payment before the work is scheduled. A written payment schedule protects both sides.

Compare quotes on the same written scope of work, not on the bottom line alone. Check that each quote lists materials and brands, labour, permits, cleanup, and exclusions, and ask how change orders are priced. A bid that is far below the others usually means something has been left out.

A contractor contract in Wisconsin should state the full scope, materials, total price and payment schedule, estimated start and completion dates, the licence number, how changes will be approved and priced, the warranty, and who handles permits and cleanup. Read it before signing and keep a copy.

Timelines in Janesville vary widely by trade and scope, from a same-day repair to several months for a major remodel. Weather, permit queues, and material lead times all affect the schedule. Ask each contractor for a written timeline and confirm how they handle weather or inspection delays.

Read the Google review excerpts shown on each listing for patterns rather than judging only by the star average. Also check the state or provincial licensing board for complaints, ask the contractor for recent local references, and confirm they carry insurance. A single bad review matters less than a consistent theme.

Pricing in Janesville reflects local labour rates, cost of living, demand, and how far crews have to travel. Dense metro areas and high-cost regions usually run above the state average, while smaller markets can be below it. The only accurate comparison is like-for-like quotes from contractors who work in Janesville.

Document everything in writing first, including photos, dates, and the contract. Ask the contractor to fix the issue under the warranty, and if they refuse, file a complaint with the Wisconsin licensing board or consumer-protection office. You can also contact us so we can review the listing associated with that business.