Mainline Services

★★★★★ 4.5 / 5 (77)
Emergency Call


: Denver, CO 80237
: (303) 596-5803
: http://www.mainline-services.com/

Company Overview

Leading Plumbing Inspection Services.

We are committed to ethical practices, providing people come first and providing precise and lawful inspections for everyone concerned to facilitate fair negotiations with accountability. Recognized by the Channel 4 News Investigative Team, we are proud to participate in real estate and home inspector training seminars. Our training and report evaluations adhere to IPC Standards and Local City Codes. We are the exclusive Nationally Board Certified Inspection Company for City, Engineering Firms, Commercial and Residential Evaluations.

Mainline Services delivers an all-inclusive report with PDF documentation and a private video connection after the inspection. We offer complimentary toilet disconnections and reconnections with a fresh wax ring. We do not charge for challenging access points (crawlspaces, rooftops). Our equipment includes top-rated tools with 17"" HD screens and regular camera calibrations for accuracy. Our inspectors are individually insured and certified professionals. After experiencing plumbing companies with dubious practices, I saw the need for a change and a new standard in the plumbing industry. I acquired the best scientific equipment available, establishing a National Training Program to transform my team from untrained ""Scopers"" to skilled Plumbing Inspectors with a solid understanding of construction and hydronics. We founded Mainline Services to educate individuals in the plumbing field with transparent pricing and provide exceptional service at one competitive price. We serve Residential, Commercial, Warehouse, and Military establishments. Our services include inspections of pipeline construction in wastewater lines, septic lateral systems, vacuum lines, bridges, and fiber optic/power line casings. WE DO NOT REPAIR plumbing, conduct excavations, or clean lateral lines. We concentrate exclusively on providing the most effective on-site recorded video inspections with detailed written reports on problem solutions.

Mainline Services sets a new benchmark in service at a reasonable price with transparency. Our team of inspectors is here to assist you in making the most important decision of your life. I do not include my name on any card or flyer, and the inspector who arrives could be one of our team members or another qualified professional representing our stringent standards. We are a united team focused solely on providing accurate assessments and guiding all involved to a ""Win, Win Agreement"".

Mainline Services is the only Nationally Board Certified Inspection Company in the Midwest qualified for sewer, underground lateral line, and manhole assessments and rehabilitation. We are proactive and Corona Aware for your home and business.

Business Services

  • Plumbing inspection
  • Plumbing installation or replacement
  • Plumbing repair
  • Sewer installation
  • Sewer repair

Business Location & Hours



Mon:8:00 AM - 5:00 PM
Tue:8:00 AM - 5:00 PM
Wed:8:00 AM - 5:00 PM
Thu:8:00 AM - 5:00 PM
Fri:8:00 AM - 5:00 PM
Sat:8:00 AM - 5:00 PM
Sun:10:00 AM - 5:00 PM

Recommended Customer Reviews

Anne K.
★★★★★

This review is long overdue. We used Mainline Services for initial sewer inspection during house purchase. They came highly recommended and it quickly became noticeable why: They are prompt, very professional, detail oriented and do not cut corners, fair in their pricing and great where many companies fail.

We recently used a sewer line cleaner that left a lot to be desired and inaccurately diagnosed a problem with our main sewer line, claiming that we needed to call another company known to him as we may be looking at a need for sewer line repair. That led to some suspicion as it had not been 5 months since Mainline Services inspection and the line had been repaired less than 3 years ago, so we were less than convinced of what this technician was reporting. We called in Mainline Services to repeat inspection of the main line and they were more than happy to do so and even charged less because it was our second time using them. We requested to have the same technician come around as he was more familiar with the line and we generally prefer working with one technician for any job. Robert Peters has been our service technician and will remain our service technician if we have anything to say about it. He truly represents what the company is about, which is providing great service to all their clients and going above and beyond to educate clients of what are concerns and what are not (all within the realm of his job of course).

This is a company that we would recommend without hesitation to anyone looking for a professional plumbing company that specializes in sewer line inspections. We would go a step further by highly recommending Robert Peters for the job. You will not regret the decision to use either this company or the recommended technician. The service speaks for itself. You get a detailed report and video recording of your sewer line on DVD on the day of service. Thank you so much Mainline Services and special thanks to Robert for the work that you do. Our sewer line has been operating fine and with you by our side we know we have a great team to address any future issues!

Jill S.
★★★★★

I'm a Real Estate Broker and will only use Mainline for all of our sewer scopes. They are reliable, honest and professional. They are the best in the state!

Jim J.
★★★★★

Another company had come out to do a locate and when we couldn't find the sewer line Matt P from Mainline came out at 7am the following day. Matt was on time, professional, and best of all, provided a clear and precise locate. Thank you Matt P.!

Matt also provided some insight as to how best complete the project saving me time and money.

Call Mainline before you start your sewer line repair!

Chris K.
★★★★★

Dewayne and his assistant were very helpful as we had questions about some cracks in our clay pipes and had had three backups over the past few years. He was on time, spent quite awhile with us, gave us helpful hints and good advice. He also supplied us with a labeled DVD of our pipes, and names of reputable vendors who could help us. He carefully explained the whole process as well as a plan for the next steps.We had been told we needed a $6,000-$14,000 job to replace our main sewer line.We were happy to find out that is not the case but with regular roto-rooting and maintenance we should be okay. We would definitely recommend Mainline Services as a reputable company! They don't complete the repairs, so you know they aren't out to make money off of you.

Tommy E.
★★★★★

These guys are awesome! It's refreshing to see good honest people out there working hard to make a living... greatly appreciate the diligence and professionalism Mainline Services brings with their work... would def recommend them...

Vanessa C.
★★★★★

Thank you Mainline! I wanted to get an impartial third party when it came to my sewer scope. I had a backup and called Roto Rooter. BIG MISTAKE. $650 later... I got a bad snake and my scope guy told me that it was going to cost $14,600. I cried... Lol. I was so stressed out! The Roto Rooter guy was super uncomfortable and then he told me that... I didn't NEED to do it right away. Then I tearily said okay. I'll do it in 2 months. Then he reassured me that there was no TRUE timeframe to get it done. Weird, right?

I talked to my parents and they said to get a second impartial opinion. I decided to go with Mainline, because of their great reviews. Guess what? I saw huge roots that weren't even snaked! No wonder the water was pooling. He took his time explaining everything and the different falls and what to be concerned and what not to be concerned about. I DON'T HAVE TO FIX ANYTHING! I do need to get things cleaned again. I honestly don't trust Roto Rooter to do the job again. I'm going to go with the guy Mainline recommended. I'm not paying $450 to get a snake... I've read many reviews now and know that the going rate is about $100-180. It was recommended that I do this once every 1-3 years. I feel good about things again.

John L.
★★★★★

Dewayne with Mainline is great to work with. Friendly, knowledgeable and seems like a good guy. He knows his stuff and will help you source additional repair work to make sure you are getting an honest quote.

Evelyn L.
★★★★★

I contacted Mainline after I had the basement drain back up and 2 snake attempts didn't work. They were able to find the source of the blockage with their camera and then flag the area so my plumber would know where the issue was. They were great. Professional, courteous, and fast. They don't do repairs so they aren't try to sell you services you don't need. They had to take out the toilet which was part of the $99 fee. I have a 100 year old house so I was scared to hear the diagnosis. But thankfully it wasn't as bad as I thought. Am super happy with their service and now my plumbing works again!

Heather T.
★★★★★

Sewer talk is anything but sexy and is downright depressing financially. When our main line backed sewage into our house, we weren't prepared for the news of a belly in our line combined with an offset. We called Mainline for a second opinion/camera scope.

The woman who answered the phone was so nice and helpful. She recommended several contractors that could do the work on our sewer line. In addition, we set up a camera scope.

Matt P came out to do the scope and was awesome. He was really professional and took his time explaining what was happening in our sewer line as well as options for us. He gave us really good advice and his write up was very comprehensive. I was able to take his report and give it directly to Ed Holcroft who was one of their recommended vendors. He was awesome too and just finished the work on our line today.

In short, plumbing work is not fun to pay for but is of course essential! I would trust Mainline, Matt P and Ed Holcroft with any job.

Adam P.
★★★★★

We called Mainline after having another company come out and they quoted that we needed $8,000 in repairs done on our plumbing. We were told that our cast iron pipes were flaking and cracking and needed a liner put in. We were also told by the previous company that we would need to excavate our garage!!! We needed a second HONEST opinion. That's when we called Mainline.

Duane arrived 15 minutes early. He was friendly and knowledgable. He showed us our lines and explained exactly what was happening and why. We had old pipes, yes, however they were intact. We had a mineral buildup that needed to come off. We were charged a mere $99.00 and Duane recommended who to call to have our lines cleaned.

We were so delighted with the services. We won't use anyone else!

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