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.

Our company stands for integrity, providing people come first and delivering reliable and lawful inspections for everyone concerned to support impartial discussions with responsibility. Selected by the Channel 4 News Investigative Team, we are proud to speak at real estate and home inspector training seminars. We follow IPC Standards and Local City Codes. We are the exclusive Nationally Board Certified Inspection Company for municipalities, engineering firms, and both commercial and residential assessments.

Mainline Services delivers a comprehensive report with PDF documentation and a private video connection after the inspection. No fees for toilet removals and resets with a new wax ring. No fees for difficult access areas (crawlspaces, rooftops). We employ top-rated tools with 17-inch high-definition monitors and continuous camera adjustments for accuracy. We have individually insured and certified professionals. Having worked in plumbing companies with unreliable practices, I decided to create a change and a new standard in the plumbing industry. I acquired the best scientific equipment available, creating a National Training Program to elevate my team from untrained ""Scopers"" to skilled Plumbing Inspectors with knowledge of construction and hydronics. We founded Mainline Services 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 conduct inspections on pipeline construction in waste lines, septic laterals, vacuum lines, bridges, and fiber optic/power line shells. WE DO NOT REPAIR plumbing, conduct excavations, or clean lateral lines. We are dedicated to providing the most effective on-site recorded video inspections with clear written documentation of solutions.

We represent a new benchmark in service at a fair market price with responsibility. We are here to help you in making the most important decision of your life. My name does not appear on any card or flyer, and the inspector who arrives could be me or another qualified professional representing our stringent standards. We function as a unified 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 assessing and rehabilitating sewer systems, underground lateral lines, and manholes. We are proactive and Corona Aware 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

RedShell R.
★☆☆☆☆

Contacted them as I was looking for plumbing services. The response was quick - I will connect you with the ""other guy,"" he is the best in town. Here is the snapshot - ""I apologize I meant to give you Joe's phone number as well. He is very popular because he is the best. Keep trying to call him. His number is 303-601-2741."" ""Joe"" the Plumber never answered or returned my phone call. You suck, Mainline Services.

Sara G.
★★★★★

Mainline services was great! From calling to get information, to making an appointment to having Matt Come out and doing the scope on the mainline was great! Uber amazing customer service from all angles. Matt was very friendly, personable and helpful. Thank you so much Matt and Mainline services!

Laura E.
★★★★★

This company is terrific! From the lovely woman who handles the phone, Hannah, to the guy who came out to my home (John), I experienced wonderful customer service from start to finish with Mainline.

After having my sewer lines cleaned out by the terrific Joe McCloud from Diamondback Drains (recommended as step #1 by Mainline), I had the Mainline service rep come out to scope out my line. He did a great job and explained every step of what he was doing. He scoped my sewer line out to the street and found that there were no breaks or cracks or irregularities anywhere in my line. A different and well-known plumbing company had tried to tell me a year ago that all of my pipes were cracked and needed to be replaced---to the tune of almost $15,000. Thank goodness I resisted that other company's dishonest, hard-sell pitch.

Mainline is efficient, reasonably priced, friendly and HONEST. If you want great service and do not want to be lied to or price-gauged, call Mainline.

Elizabeth C.
★☆☆☆☆

As a real estate agent my clients hire someone to video sewer line with every purchase....these guys called it wrong both times (2 different sales) i never again need their opinion!

Holly J.
★☆☆☆☆

I have used this company for years and it used to be great, when it was just the owner Dewayne. But he now has a bunch of people working under him and does not do the sewer scopes himself. Recently we had a sewer line scoped by one of his employees, the employee could not get into the house from the clean out, so he just went inside and scoped out. He said the line was in great shape. Well, a few weeks later the buyers moved in and toilets started backing up, causing major issues and an emergency call to a very expensive plumber. Turned out the line was broken. After this happened I called Dewayne for his help in resolving the issue. He was immediately defensive and refused to admit his employee had made a mistake. We talked about this for weeks and he was very uncooperative and combative. We wanted him to come to the house so we could discuss what happened and he said the only day he could be there was Father's Day because he lives 175 miles away. If he lives 175 miles away he is probably not very hands on on his Denver business. And it shows. After all of this I posted a review on the BBB, after which he called the El Paso Co Sheriff on me, not really sure why. Then he sent me numerous threatening text messages starting at 11:40pm. Needless to say, I will no longer be using this business.

Christopher G.
★★★★★

I'm a real estate agent. I have been referring these guys to my clients for over 3 years. What you don't get with them that you sometimes get with others is that the sewer line is too dirty to scope. If it is at all possible to get the line scoped they get it done. They are not overly dramatic about inperfect conditions while still providing fires with informative constructive critiques of sewer lines.

Lori T.
★★★★★

Very happy with Mainline Services. Jackson was a pleasant and knowledgeable tech who stuck through a difficult situation in the cold - on the last call of the day right before Christmas. Highly recommend getting a video done so you know exactly what is needed. Peace of mind is worth every penny.

Cheryl S.
★★★★★

Dustin was out last week and was very professional and thorough. It would be helpful to have the preferred vendor list available at time of visit as I ended up having to go a more expensive route to get my kitchen back in working order. Highly recommend that you have this service done as part of the homebuying process. I will never buy another home without having this done.

Nick B.
★★★★★

Just got done with Matt the technician and WOW!! Amazing, thorough work. Very pleased with everything - Bottom line: Great Company! Thank you!

Ariel R.
★★★★★

Matt and Brian came out to scope our mainline today. They were sooo helpful!! We had been told by a plumbing company that we needed to have part of our line replaced right away for $5000, yet when the guys at Mainline looked, they identified issues in a completely different location in the line, and as it turns out, it isn't as bad as we thought. They recommended a thorough cleaning and re-scope before we make any big decisions. And we will get a copy of the video they took of our mainline. Plus, they gave us the number of a guy who can come out and clean the line out really well. Top notch service. Both Matt and Brian were very professional, friendly, helpful and answered all our questions. Plus, they were super sweet to our slightly nervous doggie (bonus points!!) All around great experience. I highly recommend this company!!!

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