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

Avatar for Western Rooter & Plumbing
Western Rooter & Plumbing
4.8(
172
)
Plumbing for a Remodel or Addition - Install

Serving Thousand Oaks, CA and surrounding areas

Approved

In business since 1981

Free estimates

Emergency services offered

"The technician arrived at the start of the 2 hour window. On time! Very professional. Explained options for dealing with my toilet leak. I chose to replace the toilet and gave him guidlines for the new toilet. He went to Home Depot, acquired the toilet returned promptly and installed it in a timely manner. After which he broke down and explained the itemized charges. After paying for the work thru my credit card, I received an e-mail summary right away...One major concern that I had in hiring Western Rooter & Plumbing was that their technicians had been vaccinated for Covid 19. I had been referred to Western earlier this year by my condo HOA for a common area leak repair in my unit. I was assured by the dispatcher that the technician coming to my condo was vaccinated against Covid. So when I had this toilet leak problem 6 months later that I had to pay for, out of a multitude of plumbing companies, I went back to Western Rooter & Plumbing after receiving the same assurance."
Ruben installs a new drainage system under a customers home. Working in a crawl space is rough, but we do what is needed.
Backing up? Got roots? Blast those roots out with a Hydro Jetter! We use a wart hog nozzle that combines controlled rotation with a unique 8 jet cutting configuration optimized for removing roots. It’s better with a jetter! Call us! We got this! ??
Sewer Line Camera
No drain clog too big or small, Western Rooter covers them all!
Justin clearing a Kitchen sink back-up after the Memorial holiday.
HALO 5 whole house water filtration system.

+542

Response time12 hrs
Response rate100%
6 neighbors recently requested a quote
Avatar for Fix It Quick Plumbing Inc
Fix It Quick Plumbing Inc
5.0(
26
)
Plumbing for a Remodel or Addition - Install

Serving Thousand Oaks, CA and surrounding areas

Approved

In business since 2005

Free estimates

Emergency services offered

"I had a great experience with Fix It Quick Plumbing! They came out to unclog my washer drain and lived up to their name—fast, efficient, and right on time. Armando was professional and got the job done quickly without any hassle. Best of all, the pricing was totally reasonable and within my budget. Definitely keeping them in mind for any future plumbing needs!"
Drain&Rooter Service
Cleanout Install
Hydro-Jetting
Descale
Camera Inspection

+10

Response time5 hrs
Response rate100%
Recommended by4%of homeowners
Avatar for California Drains Incorporated
California Drains Incorporated
5.0(
30
)
Plumbing for a Remodel or Addition - Install

Serving Thousand Oaks, CA and surrounding areas

Approved

Super Service Award Winner

In business since 2014

Free estimates

Emergency services offered

"This company is the best. They were upfront on the cost of the repairs and did a fantastic job. They will aways be our first choice for any future plumbing projects. Thank you, California Drains!"
Water Main Repair
Water Main Shut Off Valve
3/4" Pressure Regulator
Clean Out Installation
Sewer Spot Repair

+11

Response time10 hrs
Response rate97%
135 neighbors recently requested a quote
Avatar for ELITE ROOTER, INC. - Ventura
ELITE ROOTER, INC. - Ventura
4.7(
16
)
Plumbing for a Remodel or Addition - Install

Serving Thousand Oaks, CA and surrounding areas

Approved (Corporate)

In business since 2017

Free estimates

Credit card accepted

Are you searching for a reliable plumber ? Elite Rooter offers expert drain cleaning & a full range of residential plumbing services . As expereinced plumbers, we understand the frustration of plumbing problems & provide fast, dependable, and affordable solutions, available 24/7 for emergencies. Whether it's a stubborn clogged drain, a leaky pipe, or a need for water heater repair or installation, our licensed & insured technicians are ready to help. You'll always receive upfront pricing with no hidden fees, and we stand behind our work with a 100% satisfaction guarantee. For dependable plumbing repair & drain cleaning services, contact Elite Rooter today ? we're here to help!.

My Work
My Work
My Work
My Work
My Work

+6

Recommended by62%of homeowners
Avatar for Simply Drains
Simply Drains
4.8(
9
)
Plumbing for a Remodel or Addition - Install

Serving Thousand Oaks, CA and surrounding areas

Approved

Free estimates

Small jobs welcome

Credit card accepted

At Simply Drains we pride our company on reliability, great communication, integrity, and quality work. We are experts in our trade and will do our best to keep you as educated as we can on your particular task or project. We look forward to earning your business!

Avatar for LF Plumbing Services LLC
LF Plumbing Services LLC
5.0(
2
)
Plumbing for a Remodel or Addition - Install

Serving Thousand Oaks, CA and surrounding areas

Approved

In business since 2023

Free estimates

Emergency services offered

At LF Plumbing Services LLC, we take great pride in our experience, expertise, quality and customer service that we provide to meet the consumer's needs. It is our mission to provide excellent workmanship and complete customer satisfaction from start to completion of a project. In order to understand the needs and expectations of our customers, we take great care to work and communicate with every customer in a professional manner. Our reputation is based on service, safety and quality, regardless of how large or small the job.

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FAQs for plumbing installation for a remodel or addition projects in Thousand Oaks, CA

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 Thousand Oaks, CA 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.