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

Avatar for Mega Mushroom LLC
Mega Mushroom LLC
5.0(
9
)
Plumbing for a Remodel or Addition - Install

Serving Seahurst, WA and surrounding areas

Approved

Super Service Award Winner

In business since 2007

Free estimates

Emergency services offered

"My company has been using Mega Mushroom for years. We specialize in property management for vacation rentals and use Mega for all our plumbing jobs. They are professional, timely, and have helped us with multiple emergency repairs."
Newmark Gas Addition
Newmark Gas Addition
Newmark Gas Addition
Newmark Gas Addition
Cistern Install

+8

Response time8 hrs
Response rate100%
30 neighbors recently requested a quote
Avatar for Knockout Plumbing & Mechanical, LLC
Knockout Plumbing & Mechanical, LLC
4.9(
7
)
Plumbing for a Remodel or Addition - Install

Serving Seahurst, WA and surrounding areas

Approved

In business since 2019

Free estimates

Emergency services offered

"Great experience working with Colin on installing a gas line for our kitchen. We got three bids and theirs was almost the lowest but I got such great vibes from Colin it was an easy choice. Looking forward to working with them again!"
Bathroom Remodel
Toilet Install
Bathroom Remodel
Specialty Toilet Install
New Construction/Rough in

+10

Response time1 day
11 neighbors recently requested a quote
Recommended by85%of homeowners
Avatar for Cahill's Plumbing & Heating
Cahill's Plumbing & Heating
4.1(
38
)
Plumbing for a Remodel or Addition - Install

Serving Seahurst, WA and surrounding areas

Approved

Credit card accepted

Customers say: Super punctual

"These guys were amazing! We had the plastic water intake valve behind the toilet burst and spray water everywhere at 4am. after cleaning up the mess we called Cahill's at about 6:45am and they arrived by 8:30am to fix the valve, which took them like 15 minutes. I asked them about doing all of the valves in the house (16 total) and they agreed to come back at noon to do all of them. At exactly noon they were back at my house and had all the valves changed out in less than 2 hours. They were friendly, clean, polite, and provided excellent customer service. Jason and Harry were the team that came to my house and I would highly recommend them. And thanks to Russell, the owner, for giving us a great deal on the work his team did. We will be calling on Cahill's for any future plumbing needs."
1 neighbors recently requested a quote
Recommended by82%of homeowners
Avatar for FETSKO CONSTRUCTION LLC
FETSKO CONSTRUCTION LLC
New to Angi
Plumbing for a Remodel or Addition - Install

Serving Seahurst, WA and surrounding areas

Approved

In business since 2023

Free estimates

Small jobs welcome

With several years of experience, we work hard to bring each customer the best possible service and quality available. We look forward to working with you on your next project. We welcome your questions and thank you for your interest.

Response time2 hrs
Avatar for All Water Plumbing LLC
All Water Plumbing LLC
5.0(
12
)
Plumbing for a Remodel or Addition - Install

Serving Seahurst, WA and surrounding areas

Free estimates

Emergency services offered

Credit card accepted

"One could not ask for much more with Vlad from AWP. He was willing to take the time to discuss what he was doing and explain options. His work is very neat and precise and he maintained a very clean work environment. As someone who does most of their own work, I can assure you that I will utilize AWP for all my plumbing needs in the future."
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+24

Recommended by100%of homeowners
Avatar for Danika Plumbing, LLC
Danika Plumbing, LLC
4.1(
286
)
Plumbing for a Remodel or Addition - Install

Serving Seahurst, WA and surrounding areas

In business since 2002

Emergency services offered

Credit card accepted

"These guys are great and considered my possible home expansion when selling a water heater to us. Install price beat the competitors and the quality of the work is great. Hands down, hire these folks for your plumbing work!!"
New Laundry Room
Gas Water Heater Install
Water Main Repair
Water Pressure System Install
Found the leak!!

+10

Response time12 hrs
Recommended by86%of homeowners
Avatar for The Plumbing Joint Inc.
The Plumbing Joint Inc.
4.6(
299
)
Plumbing for a Remodel or Addition - Install

Serving Seahurst, WA and surrounding areas

In business since 1973

Free estimates

Emergency services offered

"Very happy with the entire experience. Got an estimate which was the lowest of the 4 plumbing companies that I contacted for the job. I felt the price was reasonable and pretty close to the price I thought it would cost. The job was done at the agreed upon estimate quote price, no additional cost after the fact. I was able to schedule the job next day. The Plumber was on time and only took him 1 1/2 hours to complete the job. Work was very well done and very happy with result. Cost - $1,339.00 + Tax."
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Recommended by91%of homeowners
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FAQs for plumbing installation for a remodel or addition projects in Seahurst, WA

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 Seahurst, WA 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.