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Top-Rated Plumbing installers for a remodel or addition in Flagstaff - Updated Nov 2026

Avatar for City Plumbing & Rooter AZ, LLC
City Plumbing & Rooter AZ, LLC
5.0(
6
)
Plumbing for a Remodel or Addition - Install

Serving Flagstaff, AZ and surrounding areas

Approved

In business since 2022

Free estimates

Emergency services offered

"I had an excellent experience with City Plumbing and Rooter AZ. What started as a mainline leak quickly turned into a full replacement after proper leak detection, and I’m honestly grateful I went with them. From the beginning, they were professional, transparent, and easy to communicate with. They took the time to explain everything clearly so I understood what was going on and what needed to be done. After getting quotes from multiple companies, their pricing was fair and straightforward—no surprises or pressure. Most importantly, they made me feel taken care of throughout the entire process. The work was done efficiently and with great attention to detail. If you’re looking for a trustworthy plumber who stands by their work and treats customers right, I highly recommend them."
Walter - Mascott
Cleanouts w/Backflow
Approval from City
Installing Cleanouts
Septic Fix

+3

31 neighbors recently requested a quote
Avatar for Element Plumbing, Heating and Air
Element Plumbing, Heating and Air
5.0(
5
)
Plumbing for a Remodel or Addition - Install

Serving Flagstaff, AZ and surrounding areas

Approved (Corporate)

In business since 2024

Free estimates

Credit card accepted

Element Plumbing, Heating & Air is equipped to solve any service and repair plumbing and HVAC issues for your residential or commercial properties. We are experts in trenchless sewer repair technology, a more environmental friendly way to repair your sewer line without digging up your yard and disrupting your home. With pipe bursting, pipe lining, and pipe patching, we are well equipped to handle any damaged sewer line efficiently. Element also specializes in water quality, bringing the cleanest water to your home and family. We test your water at third party independent laboratories, analyze your water results under the guidance of leading water filtration experts in the United States to create systems that are designed specifically to remove contaminants present in your water source. When it comes to plumbing, heating and air, we are in our Element so that you can be in yours!

26 neighbors recently requested a quote
Monark Plumbing Services LLC
New to Angi
Plumbing for a Remodel or Addition - Install

Serving Flagstaff, AZ and surrounding areas

Approved

In business since 2024

Free estimates

Offers commercial services

Monark Plumbing Services LLC is committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty, and personal responsibility. Our distinction is the quality of service we bring to our customers. Accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are watchful of our customers' interests, and make their concerns the basis of our business.

Response time2 hrs
Avatar for JDS Improvements
JDS Improvements
4.4(
122
)
Plumbing for a Remodel or Addition - Install

Serving Flagstaff, AZ and surrounding areas

In business since 2006

Free estimates

Emergency services offered

"J.D.S. Improvements is a company that I can fully stand behind. Their employees are very responsible, respectful, and professional. We had a large TREX deck built and it turned out beautiful. I would recommend them for all your renovations."
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+20

Recommended by94%of homeowners
Black Horn Builders.
5.0(
8
)
Plumbing for a Remodel or Addition - Install

Serving Flagstaff, AZ and surrounding areas

In business since 2023

Free estimates

Emergency services offered

"Dylan takes pride in his work and does an outstanding job. Not only is he punctual but the quality of work and prices are GREAT! He is all about what the customer wants and delivers. I highly recommend him for any projects you might have. I will be using them for future projects."
Landscaping Project
Gary Driveway/landscape
Barbara snow removal.
Landscaping Project
Nora Muse Grey water leach system.

+16

Recommended by100%of homeowners
Avatar for Carlos Plumbing Service
Carlos Plumbing Service
5.0(
1
)
Plumbing for a Remodel or Addition - Install

Serving Flagstaff, AZ and surrounding areas

In business since 2020

Free estimates

Emergency services offered

Experienced father and sons plumbing team looking to grow and provide the best work at reasonable prices in Arizona. We also work closely with other trades(electricians, painters, drywallers, hvac, etc). Thank you, we hope you have a great day!

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+4

Recommended by100%of homeowners
Showing 1-10 of 21
FAQs for plumbing installation for a remodel or addition projects in Flagstaff, AZ

Adding bathroom plumbing to a detached garage starts with the basic line installation cost of $900 to $1,300. On top of this base expense, you'll need to budget for each fixture. A toilet costs  $250 to $550, sinks cost $150 to $800, and a shower or bathtub costs $400 to $1,900. The project will also require ventilation, moisture-resistant materials, and possibly electrical work. Remember that these costs reflect only the plumbing aspects—additional construction, finishing, and permitting expenses will apply to complete a functional bathroom space.

While certain aspects of garage renovation might be suitable for DIY enthusiasts, plumbing installation requires professional expertise. Connecting to water and sewer systems demands specialized knowledge and equipment, and improper installation can result in severe water damage, code violations, and potential health hazards. Most municipalities require permits for plumbing modifications, and these often stipulate that licensed professionals must perform work. Consider limiting your involvement to simpler tasks like painting or basic finishing work.

The timeframe for adding plumbing to a detached garage spans one to three days for the actual plumbing work. However, this represents only the active installation period. The complete project timeline must account for planning, obtaining permits (which can take weeks depending on your locality), coordinating multiple contractors if needed, and addressing any unexpected challenges that arise during installation. Weather conditions can also impact excavation and outdoor connection work.

Adding plumbing to a detached garage will likely increase your property taxes. Tax assessors consider plumbing an improvement that enhances property value and functionality. The specific tax impact varies by location and project scope. Converting a garage into living space with plumbing facilities can trigger significant reassessment in many jurisdictions. Before proceeding with your project, consult your local tax assessor's office to understand the potential tax implications and factor this ongoing expense into your decision-making process.

The Flagstaff, AZ homeowners’ guide to plumbing installations for a remodel or addition

From average costs to expert advice, get all the answers you need to get your job done.