Find and Invite the Best Commercial Plumbing Contractors in Janesville, WI
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15 Best Plumbing contractors in Janesville, WI
Downtobid vets each subcontractor's specialties, capabilities, and contact details for complete accuracy.
Dave Jones
2225 Kilgust Rd. Madison, WI 53713
Dave Jones, Inc. is a full-service mechanical contractor providing plumbing, heating, cooling, fire protection, and electrical services and installations for both residential and commercial projects, with a commitment to quality craftsmanship and customer satisfaction since 1977.
Verified
RHD Plumbing & Remodeling
1480 Oak Opening Dr, Stoughton, WI 53589
RHD Plumbing & Remodeling, Inc. is a full-service plumbing company offering residential, commercial, and new construction plumbing services, as well as kitchen and bathroom remodeling, and a preferred maintenance program in Wisconsin, with a focus on the Greater Dane County area and surrounding counties.
Verified
Joe's Plumbing
N9153 Deer Path Rd. East Troy, WI 53120
Joe's Plumbing, based in East Troy, WI, specializes in new construction, remodeling, service and replacement, and water treatment, with over 18 years of experience serving the residential and commercial sectors in Southeastern Wisconsin. Founded by Joe Kesselhon and Aaron Pluess, who are master plumbers with decades of experience, the company prides itself on quality workmanship, honesty, and integrity.
Verified
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Pelikan Plumbing
P.O. Box 484 Sullivan, WI 53178
Pelikan Plumbing LLC is a plumbing company based in Sullivan, WI, offering residential, commercial, and industrial plumbing services including new construction, remodeling, service, and repair. The company is owned by Master Plumber Michael Pelikan.
Verified
Southern Lakes Plumbing & Heating
N5860 U.S. Hwy. 12 Elkhorn, WI 53121
Southern Lakes Plumbing & Heating, established in 1983 in Elkhorn, WI, provides commercial and residential plumbing, heating, and cooling services in the Greater Walworth County Region, aiming to develop long-term customer relationships through quality work and trusted tradesmen.
Verified
George's Refrigeration
611 Lincoln Dr. Sun Prairie, WI 53590
George's Refrigeration, LLC is a family-owned commercial refrigeration contractor based in Sun Prairie, WI, with over 30 years of industry experience, providing a variety of HVAC/R services to clients in the greater Madison area since 2012.
Verified

Miller Engineering
1616 S Main St, Rockford, IL 61102
Miller Engineering is here to support your remodeling and new construction needs across residential, commercial, and industrial projects in Rockford and the surrounding areas.
Verified
Active contractor
Modern Heating & Cooling
10050 U.S. Hwy. 14 Black Earth, WI 53515
Modern Heating & Cooling is a professional HVAC company based in Black Earth, Wisconsin, offering a wide range of services including installation, replacement, and repair of heating and cooling systems for residential and light commercial applications. Established in 1985, the company provides 24/7 emergency services and specializes in air purification, geothermal solutions, and hydronics, serving Madison, WI, and surrounding counties.
Verified
High reply rate
Active contractor
R&W Heating & Cooling
Milton, WI 53563
R&W Heating & Cooling, Inc. is a local HVAC service provider in Milton, WI, offering a wide range of heating and cooling services including repair, installation, and maintenance for residential and commercial clients since 1960.
Verified
Specializations (2)
Healthcare
Museum

J.M. Brennan
6430 Ronald Reagan Ave, Madison, WI 53704
J.M. Brennan, Inc., established in 1932 and based in Milwaukee, WI, is a full-service mechanical contractor serving Southeastern Wisconsin with expertise in HVAC, plumbing, process piping, controls, industrial sheet metal, and 24/7 emergency service.
Verified
Specializations (13)
Correctional
Education
Federal Government
Financial
Quigley-Smart
600 E. Memorial Dr. Janesville, WI 53545
Quigley-Smart, Inc. is a family-owned HVAC and plumbing solutions provider in Beloit, WI, with over 75 years of experience, offering a range of services including air conditioning, heating, plumbing, and water heater services for residential and commercial customers.
Verified
Pratt Brothers
810 N. Parkway St. Jefferson, WI 53549
Pratt Brothers is a Jefferson-based HVAC contractor founded in 2011, offering a range of heating and cooling services, maintenance, and products, including high-end Lennox systems, with a commitment to efficient, reliable performance and customer satisfaction.
Verified
Kegonsa Plumbing
4226 Neptune Ct. Madison, WI 53714
Kegonsa Plumbing LLC is a family-owned business that provides residential and light commercial plumbing services, including new construction and remodeling, in Dane County, WI. They offer a 1-year workmanship warranty and have been voted the best plumbers in Madison, WI.
Verified
Sheldon Plumbing
221 Industrial Dr. Verona, WI 53593
Sheldon Plumbing Inc. is a licensed residential and commercial plumbing service provider based in Madison, Wisconsin, offering a range of services including remodeling, new installations, repairs, and retrofitting since 1999.
Verified
H.J. Pertzborn Plumbing & Fire Protection
802 John Nolen Dr. Madison, WI 53713
H.J. Pertzborn Plumbing & Fire Protection is a trusted plumbing and fire protection service provider in Madison, WI, serving residential and commercial clients since 1928 with a range of services including installation, repair, and design of plumbing and fire protection systems.
Verified
High reply rate
Active contractor
Good to know insights about Plumbing contractors in Janesville, WI
Bidding difficulty
High
Average response time
3 days
Average interest distance
62 miles
Average lead time to bid
15 days
How far are Plumbing contractors in Janesville, WI willing to travel?
Every trade and region has difference sensitivity to distance. We grouped distances into 4 categories to help you understand the distribution of 22 bid packages. The ratios of bidding contractors per distance group are 0%, 60%, 0%, and NaN%.
How much lead time do Plumbing contractors in Janesville, WI need to bid?
Every trade and region has difference sensitivity to due time. We grouped due times into 3 categories to help you understand the distribution of 14 bid packages. The ratios of bidding projects per due time group are NaN%, 38%, and 0%.
Commercial Plumbing contractors insights in Janesville, WI
Explore 1225 verified Plumbing contractors in Janesville, WI. Our platform analyzes real bidding activity, response times, and project preferences to help you make informed decisions. These insights are based on actual market data to streamline your contractor selection process.
Total contractors
1225 contractors
Total union contractors
126 union contractors
Total non-union contractors
780 non-union contractors
Total minority-owned businesses
23 minority-owned businesses
Total women-owned businesses
13 women-owned businesses
What certifications do Plumbing contractors hold?
Professional certifications and licenses held by Plumbing contractors in Janesville, WI, including OSHA safety training, trade-specific licenses, and manufacturer certifications required for specific project types.
What project types are Plumbing contractors bidding on?
Project types that Plumbing contractors in Janesville, WI are actively bidding on, including commercial office buildings, healthcare facilities, educational institutions, retail spaces, and industrial facilities.
What project owners are Plumbing contractors bidding for?
Top general contractors and project owners that Plumbing contractors in Janesville, WI are bidding for, showing which construction firms and developers are most active in the local market.
Save A Lot
Ford
Gap
Home Depot
Burlington
Meijer
Walmart
Four Seasons
Buick
Plumbing projects insights in Janesville, WI
Explore 58 Plumbing construction projects in Janesville, WI. Our analysis covers project sizes, building types, and market activity patterns to help contractors make strategic bidding decisions based on actual project data.
Total projects
58 projects
Average square footage
9,136 square feet
Maximum square footage
96,217 square feet
What square footage ranges are Plumbing projects in?
Distribution of Plumbing project sizes in Janesville, WI by square footage. Small projects include tenant improvements and retail spaces. Medium projects encompass commercial buildings and office spaces. Large projects represent major developments requiring significant resources and bonding capacity.
What construction sectors are Plumbing projects in?
Building types and construction sectors for Plumbing projects in Janesville, WI, including commercial office buildings, healthcare facilities, educational institutions, retail spaces, industrial facilities, and government projects.
Why Downtobid is the Go-To Platform for Contractors
"We have used Downtobid for our ITBs and so far our experience has been very positive. It has saved me time on the initial page turn and I really like the number of responses we're starting to see from our subcontractors!"
"The first time our company was able to travel outside Atlanta! Bidding in a new market and wasn't getting any hits on Drywall. Requested a boost and with 5 days I had 2 committed bidders and 1 submission. Using them on my next project."
"I love, the personalization of it. You get it more directed towards the contractors that we need. You make it a little more personal than putting it on Blue Book or Planhub or anything like that. You let us communicate with the subcontractors, so we can narrow it down from what you've already narrowed it down from. We get more detailed, correct quotes that we're looking for from you guys as opposed to maybe other places."
Why Downtobid is the Go-To Platform for Contractors
"We have used Downtobid for our ITBs and so far our experience has been very positive. It has saved me time on the initial page turn and I really like the number of responses we're starting to see from our subcontractors!"
"The first time our company was able to travel outside Atlanta! Bidding in a new market and wasn't getting any hits on Drywall. Requested a boost and with 5 days I had 2 committed bidders and 1 submission. Using them on my next project."
"I love, the personalization of it. You get it more directed towards the contractors that we need. You make it a little more personal than putting it on Blue Book or Planhub or anything like that. You let us communicate with the subcontractors, so we can narrow it down from what you've already narrowed it down from. We get more detailed, correct quotes that we're looking for from you guys as opposed to maybe other places."
FAQs
How can Downtobid help me find the best commercial Plumbing contractors in Janesville, WI?
Downtobid helps you find the best Plumbing contractors in Janesville, WI and submit bid requests for your projects. You provide project details, and the contractors respond with their bids through the platform.
Requesting bids from Janesville, WI-based Plumbing contractors
You can invite a contractor directly through our platform. Visit the contractor’s profile and click ‘Invite to Bid.’ Fill out the project details, including scope, timeline, and specific needs. Contractors in Janesville, WI will then respond with their bids. It’s often helpful to call contractors after submitting a request, especially if your project is urgent.
Contractor verification process on Downtobid
Downtobid sets itself apart by verifying each contractor through a multi-step process. We use AI to ensure that contractor information, including trades, is accurate. We cross-check details using databases, public records, and Google Maps to confirm that businesses are active and their contact information is up-to-date before listing them.
Essential information for Plumbing project bid requests
When submitting a bid request, include clear details about your project, such as materials needed, deadlines, and any specific requirements. The more specific you are, the better the contractor can assess and quote the job accurately.
Tips for contacting local Plumbing professionals
If your project is urgent, it’s a good idea to call the contractor directly after submitting a bid request. This helps ensure they understand the timeline and scope of work, especially if immediate service is needed.
Managing bids for large-scale Plumbing projects
If you have a larger project and don’t want to contact each contractor individually, you can reach out to us directly. We offer an ITB (Invitation to Bid) platform where you can manage bids from multiple contractors at once.
Expected response times from Janesville, WI contractors
Most Plumbing contractors will respond within 24-48 hours, depending on the complexity of your request. However, response times may vary – so be sure to follow up!
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