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Top-Rated Plumbing installers for a remodel or addition in King Of Prussia - Updated Nov 2026

Avatar for Horizon Services, LLC (PA)
Horizon Services, LLC (PA)
3.9(
1,722
)
Plumbing for a Remodel or Addition - Install

Serving King Of Prussia, PA and surrounding areas

Approved

In business since 1989

Free estimates

Emergency services offered

Horizon Services, Inc., is the regions largest and most well respected plumbing, heating and air conditioning company, with nearly 600 employees serving tens of thousands of homeowners throughout Delaware, Southeastern Pennsylvania, Southern New Jersey and Northeastern Maryland. After a quarter of a century in business, Horizons Services, Inc., remains fully committed to setting the industry standard for customer service, installation and focusing on things that are important to busy homeowners. \n

Plumber in Kitchen with Customer
Horizon Plumber crawl space
Horizon Plumber under sink
4 neighbors recently requested a quote
Recommended by89%of homeowners
Avatar for Mr. Rooter Plumbing of Greater King of Prussia
Mr. Rooter Plumbing of Greater King of Prussia
4.2(
15
)
Plumbing for a Remodel or Addition - Install

Serving King Of Prussia, PA and surrounding areas

Approved

In business since 2020

Free estimates

Warranties offered

Mr. Rooter Plumbing of Greater King of Prussia is a fully licensed and insured residential and commercial plumbing company serving Montgomery County, PA. Part of the trusted Mr. Rooter brand since 1972, we provide expert service for drains, sewer lines, water heaters, sump pumps, fixtures, and more.

Repair & Installation
Repair & Installation
Repair & Installation
Repair & Installation
Repair & Installation

+5

Response time2 hrs
Response rate100%
39 neighbors recently requested a quote
Avatar for Lynch Industries, LLC
Lynch Industries, LLC
New to Angi
Plumbing for a Remodel or Addition - Install

Serving King Of Prussia, PA and surrounding areas

Approved

In business since 2025

Free estimates

Emergency services offered

Lynch Industries provides HVAC, electrical, and plumbing services for residential and commercial customers throughout the tri-state area, including Eastern Pennsylvania, New Jersey, and Delaware. From service calls to full new-build scopes, the goal is simple: professional work and a smooth project from quote to closeout.

Outdoor unit replacement
Panel upgrade
24 neighbors recently requested a quote
Avatar for PETE RUSSO PLUMBING
PETE RUSSO PLUMBING
4.9(
140
)
Plumbing for a Remodel or Addition - Install

Serving King Of Prussia, PA and surrounding areas

In business since 1988

Emergency services offered

Warranties offered

"Great experience, Russo Plumbing was quick to respond, provided all requested info up front. We needed a new kitchen faucet but also discovered we had a leaking copper pipe in the basement. Russo plumbing promptly moved up our appointment to come out the next day. Joe was our plumber and was very courteous, completed the job in under and hour and was very knowledgeable. Overall great experience at a great price. I'd highly recommend."
Additional Photos
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+4

Response time12 hrs
Recommended by96%of homeowners
Avatar for Old State Plumbing
Old State Plumbing
5.0(
13
)
Plumbing for a Remodel or Addition - Install

Serving King Of Prussia, PA and surrounding areas

Credit card accepted

"Tim was extremely professional with all the work done. We were remodeling our powder room and needed all the plumbing reworked. He explained everything thoroughly to me and even took on an additional request when I added an extra outside hose bib be installed. Tim's definitely my go to on all things plumbing. Will absolutely be using him again for future projects."
Old water heater
Frost Free Hose Bibbs
Moen Arbor faucet
Old Rheem water heater
New water heater

+16

Recommended by100%of homeowners
Avatar for American Drain Cleaning & Plumbing
American Drain Cleaning & Plumbing
4.6(
175
)
Plumbing for a Remodel or Addition - Install

Serving King Of Prussia, PA and surrounding areas

In business since 2007

Emergency services offered

Credit card accepted

"It went very well.  He knew exactly what he was doing and he was able to fix all of our plumbing problems.  We will contact him again because he did a great job.  Our only problem was the cost but if the problems are taken care of, we will look to American for a quality job as we have had plumbers/handymen who end up costing us more in the long run.  The plumber, Dan, seemed to enjoy working on old plumbing and he was able to fix the issues with our very old and problematic plumbing right away.
"
Recommended by91%of homeowners
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FAQs for plumbing installation for a remodel or addition projects in King Of Prussia, PA

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 King Of Prussia, PA 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.