Mortensen Custom Plumbing
Company Overview
Our Solutions
Clogged Pipes/Leaks
Restrooms, Washbasins & Bathing Areas
Gas Piping
Filtration Units
Appliance Hookups
Heating Pumps
Heating Units
Waste Disposals
Sprinkler Systems
Electronic Leak Detection
Sewer System Overhaul
Frozen Pipe Solutions
For two decades, we’ve supported the Flagstaff community. Over the years, we’ve honed our skills... our passion: plumbing. But I’ll let you in on something...
We didn’t start out this proficient.
At first, we were just meeting what people thought plumbers should be. You know the type: show up “whenever”, create a muddy trail, drop a few pipe washers, deliver an invoice and depart.
That was the “norm”. Sadly, this is still true for numerous plumbing services. Then, we had an epiphany. Eight years ago, we discovered that plumbing is not merely about plumbing systems... it’s fundamentally about customer service.
This is the reason we deliver convenient appointment windows, transparent pricing and documented guarantees. If your plumbing fails unexpectedly, you might already be having a tough day. Let us help you tackle your “to-do list”.
Our mission is to repair plumbing and support people. This is what sets us apart. You’ll discover we’re your trusted friends in the plumbing business.
Marty came into this world equipped with a wrench and a hammer. Growing up in Tempe, AZ, on his great-grandfather’s land. He collaborated with his father and family to build and plumb homes in the area. At the age of eight, his teacher invited him to show his classmates a home he was working on as a field trip. Remarkably, he explained where all the pipes went and how they connected.
In college, Marty crossed paths with Annette, a beautiful dental assistant from the local community and they relocated to Flagstaff. By the time Marty completed his degree, he and Annette had grown so fond of Flagstaff that they couldn’t imagine leaving. After gaining experience with various local businesses, Marty secured his Plumbing Contractor’s License in 2003 and launched Mortensen Custom Plumbing.
Business Services
- Gas line installation
- Gas line repair
- Plumbing inspection
- Plumbing installation or replacement
- Plumbing repair
Business Location & Hours
Mon: | 9:00 AM - 5:00 PM |
Tue: | 9:00 AM - 5:00 PM |
Wed: | 9:00 AM - 5:00 PM |
Thu: | 9:00 AM - 5:00 PM |
Fri: | 9:00 AM - 5:00 PM |
Sat: | Closed |
Sun: | Closed |
Recommended Customer Reviews

I live 30 miles out of flagstaff and have a break in my water line, they said they would be happy to help, until they got my adress and realize i live in Leupp, az on the Navajo reservation. They just said they don't service the reservation. My mom just had surgery, her water line broke, she wants it fixed before she comes home. Completely refused service. Not very helpful company for people that are willing to pay and in need.

My neighbor referred Mortensen to me saying he was the highest quality plumber in Flagstaff, but probably ""not the cheapest."" Hard to find quality these days so I jumped on the recommendation. Marty showed me three different options for my project at different price points. Ultra professional throughout. Excellent communicator. Friendly. Patient with my many questions. I will definitely call Mortensen plumbing for any future projects!

When I took over in that office, there were a lot of problems and I was limited in cash. I chose the middle of 3 options presented. It took you a few hours and was 4-5x the cost of a competing company. I gave you a chance to make it right. You removed everything that was installed.
THESE ARE VERY PREDATORY BUSINESS PRACTICES.
Taking advantage of people who are naive to market prices is terrible. Not a good way to do business.

Professional Plumber, Great customer service but Pricey
Disclaimer: "" I was reached out by Marty after my poor review for the company and he did a great leadership in resolving the conflict, addressing my concerns and helping with expenses by offering Compensation. I am re-writing the review as I felt I was valued as a customer""
We had a leak in the kitchen caused by a broken pipe inside kitchen wall. Marty came over and said that to avoid damage to cabinets, it's best to access from outside. He offered us 3 option ranging from $900 to $2600 and then $ 4100. The $4100 was for full renovation of drainage system and accessing the pipe through the exterior wall of the house. We went with the highest quote as we wanted things to get fully fixed and have warranty. Honestly we were really surprised with such a big number. Unfortunately there were several things that we expected Marty to discuss with us or do:
1- As a professional who has been in this business for many years, we'd expect them to at least consider other options such as mold possibility under kitchen flooring and behind cabinets so we don't go through with something that we had to redo again and double pay. He mentioned the possibility but did not advise us to first have someone make sure of that.
2- Quoting and charging the customer after doing the job as It give me a better idea that the price I am being quoted is based on the labor and material that have been done and used and not just an estimate.
When we figured there was mold we had to rip the kitchen off and we talked to Marty several times to which he was responsive as he is good at listening and communication. Marty took off $700 for a portion of work he had not yet completed (making access panel for future inspections). Then we were left with a $3400 bill which insurance did not cover.
Marty had mentioned that they don't work with insurance but we did not know it would become such a hassle. So we learned a hard lesson to work with companies that directly work with insurance in future
Overall, we ended up being happy with these guys after Marty showed that he cared about his customers and is ready to help with the finances and offered ways to reduce cost (we asked him to take off his 5-year Warranty which saved us $600).
However, we had lots of headaches with running plumbing bills y insurance which was not their fault.
Marty is a good guy and he is really good at communication and listening to your concerns and this is his strongest suit. He is also professional in his job. If you decide to go with Marty, you will have good service and customer care, but it will be more expensive and you have to deal with insurance yourself.

Since the first phone call to the last work day (in 68 mph wind). Mr. M. Mortensen was truly a professional and completed so much work on my 60 year old house. His assessments were spot on, and he completed his work with a pride I have not seen in awhile. I would highly recommend Mr. M. Mortensen not only for his great work ethic; but for his knowledge of plumbing systems and ""can do"" attitude. Mr. M. Mortensen also was patient with my endless questions and was able to guide and suggest things I could do to keep my home safe and running soundling. Long live 60's blue toilets!! And....Mortensen Plumbing. Flagstaff is a word of mouth town, and I plan on making my experience known to all my ""next door neighbors"".
Thank you for such great service!

I've come to depend on Marty for my plumbing repairs and other plumbing needs. He is on time and comes when he says he will. I recently needed a new water heater and could not face another cold shower and he moved his schedule around to accommodate me so I will have hot water for my shower in the morning. He is polite and clean (he cleans up the mess and wears booties over his shoes).

Super service. Marty is patient, thorough and respectful, he answers all my questions and tells me things I need to know that I didn't think to ask. His work is high quality - I don't have loose handles, misaligned fittings, slipping parts like I have had over the years after other plumbing experiences. The first job he did for me was 2 years ago, and all the pieces he fixed continue to work so smoothly. He takes the scary out of plumbing problems. The biggest marker for me, though, is integrity. I sense the highest integrity in Marty - he is a craftsman, not a used-car salesman, and that shines through clearly in his communication style. I most highly recommend him.

I didn't have the best experience with Mortensen Plumbing. We called Marty to video inspect a sewer line on a property we are interested in purchasing. Marty seemed very professional, but would not quote a price over the phone. He said each job is different and he prefers to look at the job before giving a quote. Once his camera was in the sewer line he told me the sewer line was very dirty and there was a lot of build-up that needed to be cleaned before he could run his camera through the line. His quote was almost $1000. I told him I couldn't afford the cost, specifically because I didn't own the property. I had another plumber come out the next day and video inspect the sewer line for $150, and there was not a terrible build-up as Marty had indicated.

We couldn't suggest Mortensen Custom Plumbing enough! Marty was extraordinarily professional. I fancy myself a bit of a DIYer and Marty was patient with my questions and thoughts. Everything about the process of working Mortensen Plumbing was above and beyond good customer service. The receptionist taking the call and making the schedule was friendly and easy to work with. For the two visits required Marty called twenty to thirty minutes prior to the agreed upon time as a much appreciated curtesy. The proposals offered were clear, concise, and offered a spectrum of options for the fix, ranging from a band-aid to a high end custom update, all options clearly laid out price, components, and warranties. On a personal note, as someone who previously worked in the Tech industry, I wholly appreciated his use of technology, he took notes and photographs of our system with his smartphone, and switched over to a tablet for other uses, took payment on the tablet etc. In the future we will use Mortensen Custom Plumbing for all of our Plumbing needs.

Marty, owner of Mortensen Custom Plumbing, talked us into an upgraded water heater for approximately 3,000. The water heater has leaked so severely that it has created mold in the surrounding walls and cabinets. Upon inspection of the heater, Marty proceeded to blame us the home owners and Doney Park Water for the leak. Although he fixed the water heater, he will not take responsibility for the leak or the mold. I agree that he takes advantage of women. I would not recommend Mortensen Plumbing under any circumstance, The plumbing company is ANYTHING but custom!