Top-rated plumbing installers for a remodel or addition.

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Find Plumbing installers for a remodel or addition in Newmarket

"Prompt, quick fix, reasonable price"

Cindy J on December 2025

Heritage Home Service is a premier home service provider operating in New Hampshire, Massachusetts and Maine – bringing all the perks that come with having a large team while maintaining a strong focus on family-oriented service.

"Prompt, quick fix, reasonable price"

Cindy J on December 2025


Avatar for Daigle Plumbing Heating and Cooling

Daigle Plumbing Heating and Cooling

4.36(
34
)
Approved Pro

Daigle Plumbing Heating and Cooling

4.36(
34
)
Approved Pro
Customers say: True professional
103 local quotes requested
45 years of experience

Daigle Plumbing, Heating & Cooling is family-owned and operated by the Daigle family. We are proud to provide quality, dependable plumbing, heating, and cooling services in Derry for our customers in the surrounding areas. Our crew is full of expert technicians who are ready to help you get your system up and running!

"Great job on replacing my 50 yo oil tank."

Ellie B on August 2025

Daigle Plumbing, Heating & Cooling is family-owned and operated by the Daigle family. We are proud to provide quality, dependable plumbing, heating, and cooling services in Derry for our customers in the surrounding areas. Our crew is full of expert technicians who are ready to help you get your system up and running!

"Great job on replacing my 50 yo oil tank."

Ellie B on August 2025


Avatar for Derry Plumbing & Heating

Derry Plumbing & Heating

4.50(
30
)
Approved Pro

Derry Plumbing & Heating

4.50(
30
)
Approved Pro
Customers say: Quality work
37 years of experience
Free onsite estimate

If you�re familiar with plumbing, you know that doing it right takes just the right recipe: two parts job knowledge and three parts skill. At Londonderry Plumbing and Heating, we provide everything you need to secure the perfect plumbing solution, a mixture that will do you right, just like home cooking! No job is too small or too challenging for our dedicated professionals! Londonderry Plumbing and Heating can tackle your most challenging plumbing problems and do so at affordable rates. If you are looking for a plumber who is highly qualified, quick to respond and a pleasure to do business with, give us a call. We look forward to adding you to our list of satisfied customers!

"Great service! Emergency service and done within the day!"

Bonnie S on May 2025

If you�re familiar with plumbing, you know that doing it right takes just the right recipe: two parts job knowledge and three parts skill. At Londonderry Plumbing and Heating, we provide everything you need to secure the perfect plumbing solution, a mixture that will do you right, just like home cooking! No job is too small or too challenging for our dedicated professionals! Londonderry Plumbing and Heating can tackle your most challenging plumbing problems and do so at affordable rates. If you are looking for a plumber who is highly qualified, quick to respond and a pleasure to do business with, give us a call. We look forward to adding you to our list of satisfied customers!

"Great service! Emergency service and done within the day!"

Bonnie S on May 2025


Avatar for Hot & Cold Plumbing & Heating LLC

Hot & Cold Plumbing & Heating LLC

4.87(
190
)
Approved Pro

Hot & Cold Plumbing & Heating LLC

4.87(
190
)
Approved Pro
Super Service Award
Customers say: Quality work
Recommended by 96% of Angi customers
Recommended by 96% of HomeAdvisor customers
11 local quotes requested

SUPER SERVICE AWARD 2025,2024,2023, 2022, 2021, 2020, 2019,2018,2017,2016, 2015, 2014 AND 2013 PLUMBING. Hot & Cold Plumbing & Heating LLC is a full service plumbing, heating and gas-fitting company. For an immediate response to all your plumbing and heating needs, CALL (978) 701-1617.

"Eric was very precise in his work. We had some speed bumps that occurred due to the full gut of the bathroom. He dealt with problems effectively and kept us informed as to what he needed to do and why. Eric was great to work with and the end product was perfect. We would recommend Hot & Cold Plumming!"

80 Mill St G on October 2025

SUPER SERVICE AWARD 2025,2024,2023, 2022, 2021, 2020, 2019,2018,2017,2016, 2015, 2014 AND 2013 PLUMBING. Hot & Cold Plumbing & Heating LLC is a full service plumbing, heating and gas-fitting company. For an immediate response to all your plumbing and heating needs, CALL (978) 701-1617.

"Eric was very precise in his work. We had some speed bumps that occurred due to the full gut of the bathroom. He dealt with problems effectively and kept us informed as to what he needed to do and why. Eric was great to work with and the end product was perfect. We would recommend Hot & Cold Plumming!"

80 Mill St G on October 2025


Avatar for Lakewood Handyman

Lakewood Handyman

No reviews yet

Lakewood Handyman

No reviews yet

My name is Brandon Wood, I have been in the carpentry business for 4 years! At the beginning of 2023 I opened my own business, Lakewood Handyman. I can do all jobs big and small! I am a licensed heat pump installer, and I specialize in all things flooring. I do however provide all handyman services big and small such as; Remodels, demo, drywall, ceilings, roofing, deck building, tiling, painting, plumbing, landscaping, waste removal, you name it! If I am unable, I will be honest!

My name is Brandon Wood, I have been in the carpentry business for 4 years! At the beginning of 2023 I opened my own business, Lakewood Handyman. I can do all jobs big and small! I am a licensed heat pump installer, and I specialize in all things flooring. I do however provide all handyman services big and small such as; Remodels, demo, drywall, ceilings, roofing, deck building, tiling, painting, plumbing, landscaping, waste removal, you name it! If I am unable, I will be honest!


Maine Street Plumbing Services

No reviews yet

Maine Street Plumbing Services

No reviews yet
17 years of experience

Available for service by appointment Mon-Fri 7AM- 6PM. After hours services also available. On call nights and weekends for emergency service.

Available for service by appointment Mon-Fri 7AM- 6PM. After hours services also available. On call nights and weekends for emergency service.


Avatar for Triple M Handyman

Triple M Handyman

No reviews yet

Triple M Handyman

No reviews yet
4 years of experience

Triple M Handyman specializes in small home repair and improvement projects. We offer services such as TV wall hanging, storm door installation, painting, wall repairs, door and window repairs, plumbing fixture repair or replacement, and much more! We can get your to-do list done. We offer straight-forward, convenient pricing. Most jobs can be quoted virtually, before we arrive by visiting our website. We are currently owner operated, and the owner has over 20 years experience in the handyman field. As we look to expand we only hire only qualified professionals that we can feel confident will give our customers the best experience possible.

Triple M Handyman specializes in small home repair and improvement projects. We offer services such as TV wall hanging, storm door installation, painting, wall repairs, door and window repairs, plumbing fixture repair or replacement, and much more! We can get your to-do list done. We offer straight-forward, convenient pricing. Most jobs can be quoted virtually, before we arrive by visiting our website. We are currently owner operated, and the owner has over 20 years experience in the handyman field. As we look to expand we only hire only qualified professionals that we can feel confident will give our customers the best experience possible.


Odd Job Rob

No reviews yet

Odd Job Rob

No reviews yet

Now that people are spending more time at home, projects are popping up everywhere. Looking for someone to finish up your home projects? Give me a shout. I wear proper PPE and will work with your and your schedule to get the job done! No Job is to small!

Now that people are spending more time at home, projects are popping up everywhere. Looking for someone to finish up your home projects? Give me a shout. I wear proper PPE and will work with your and your schedule to get the job done! No Job is to small!


Real Deal Builders

No reviews yet

Real Deal Builders

No reviews yet
Free onsite estimate

Real Deal Builders is a small company with 2 to 4 full time employees. I have a long list of sub-contractors I can call on for larger jobs. I require one third down with the remainder due upon completion of the job. I offer a 10% discount to senior citizens. Financing is available under specials cicumstances . Barter is always an option.

Real Deal Builders is a small company with 2 to 4 full time employees. I have a long list of sub-contractors I can call on for larger jobs. I require one third down with the remainder due upon completion of the job. I offer a 10% discount to senior citizens. Financing is available under specials cicumstances . Barter is always an option.


SER Construction

No reviews yet

SER Construction

No reviews yet
21 years of experience

I am a carpenter with 20 years experience from frame to finish. I do all the carpentry myself. Foundations, electrical, and plumbing by others.

I am a carpenter with 20 years experience from frame to finish. I do all the carpentry myself. Foundations, electrical, and plumbing by others.

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FAQs for plumbing installation for a remodel or addition projects in Newmarket, NH

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 Newmarket, NH 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.