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, offering a people-first approach and providing precise and lawful inspections for everyone engaged to support neutral negotiations with transparency. Chosen by the Channel 4 News Investigative Team, we have also participate in real estate and home inspector training seminars. We comply with IPC Standards and Local City Codes. Mainline Services is the sole Nationally Board Certified Inspection Company for City, Engineering Firms, Commercial and Residential Evaluations.

Mainline Services delivers a comprehensive report with PDF upload and a private video link after the inspection. We do not charge for toilet disconnections and reconnections with a fresh wax ring. We do not charge for hard-to-reach locations (crawlspaces, rooftops). Our equipment includes top-rated tools with 17"" HD screens and ongoing camera calibration for accuracy. Our inspectors are individually insured and certified professionals. Having worked in plumbing companies with questionable practices, I felt it was time for a change and a new standard in the plumbing industry. I invested in the best scientific equipment available, creating a National Training Program to upgrade my team from untrained ""Scopers"" to skilled Plumbing Inspectors with expertise in construction and hydronics. Mainline Services was created to educate individuals in the plumbing field with realistic pricing and provide top-notch service at one all-inclusive price. Our portfolio includes Residential, Commercial, Warehouse, and Military establishments. We inspect pipeline construction in wastewater lines, septic lateral systems, vacuum lines, bridges, and fiber optic/power line casings. Our services do not include repairs plumbing, perform excavations, nor do we clean lateral lines. We are dedicated to providing the highest quality on-site recorded video inspections with clear written documentation of solutions.

Mainline Services sets a new benchmark in service at a fair market price with responsibility. Our team of inspectors is here to assist you in making the biggest decision of your life. I do not include my name on any card or flyer, and the inspector who arrives could be myself or another committed professional representing our stringent standards. We are a united team focused solely on providing accurate assessments and helping all parties reach ""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 committed to safety and are aware of COVID-19 for your well-being and operations.

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

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!

Ashley K.
★★★★★

First off, you should know that I did not actually hire Mainline for the plumbing work I thought I needed at my house. I left Dwayne a voicemail around 7:30am when I realized I was having back-up issues in a basement bathroom - he called me within an hour. After describing what was going on, Dwayne actually referred me to a different plumber with a specialty in the area I needed. He also provided valuable advice and recommendations, as this was the first time I've dealt with mainline issues.

The plumber Dwayne referred me to is insured and trusted, and was at my house by 10:am, problem fixed by 10:30am. I'm SO happy with the outcome. Will be keeping Mainline Services and Dwayne on my short list of excellent contractors to work with in the future.

Todd B.
★★★★★

Dewayne at mainline just potentially saved me $13K. A potential buyer of my home hired AAA Services to scope my sewer for their home inspection. AAA said I had a hole in the sewer and a belly that needed repaired to the tune of $13225. I about had a heart attack. My realtor insisted on a second opinion and we hired Mainline to come out with their HD camera and take another look. The hole in the pipe turned out to be a piece of schmuck, and the low point is self flushing with no evidence of any clog there ever. A 3' long low point in a 200' run is a non event and doesn't need any repair. You could tell on the video that sewage has never even touched the top of the sewer pipe before or after that spot.

What I like about mainline is
1. They explain exactly what you are looking at and why something is or isn't a problem.
and
2. They have no vested interest in the results of their inspection. They are going to make $99 whether you have a problem or not.

Michael B.
★★★★★

We experienced two sewer backups in three months, even after outside clean outs. I called up Mainline Plumber and Matt Palmer used his investigative skills to find the source of the problem at a y-intersection that the cleaned outs were not covering. He explained the issue in detail with evidence from camera video and even worked to clean the issues with the camera. He showed the before and after and tested each toilet for clear flow. Amazing, amazing job. He is the Sherlock Holmes of plumbing issues!!

I would note that Mainline Plumbing sent Diamondback Drains to conduct the clean-out. I asked the tech to run a clean-out from inside the house yet he insisted that outside clean-outs were sufficient. Yet as Matt Palmer found out, this did not solve the issue.

MaryBeth M.
★★★★★

On time, professional, courteous, so thorough! Matt P. was awesome as far as explaining, in detail...or ""Cliff Notes"" if you want the shorter version!! Wish I would've found these guys sooner but am soooo glad I called them! Thanks for being so honest and dependable!! OH! And the price is so reasonable!

Jen M.
★★★★★

I highly recommend Mainline. Their technician Matt was very professional and extremely informative.

Jessy Briton H.
★★★★★

On time and under budget. Mainline inspected our sewer system and created a DVD to show us exactly what our pipes look like. No guess work here. I highly recommend.

Sara M.
★★★★★

I just bought my house and called Mainline for my sewer inspection. Hannah made my appointment and was super helpful! I needed it right away and she was able get Will out in an hour. He was so helpful and answered all of my questions. I was really glad that he gave me all of my information right away, I even got a DVD of the inspection! These guys are great!

Tim B.
★★★★★

Super responsive and great service. Called to get a sewer scope done on a short time frame and they responded right away. The technician was friendly, professional and I feel great about these guys. Fair price as well.

TR S.
★★★★★

Once again Dwayne was amazing. Mainline is hands down one the best customer service company's I've ever experienced. Fair price, over deliver, extremely good communication form start to finish. Thank you Thank you

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