The Best Plumbing Contractors in New Castle, NH

Compare the highest-rated plumbing professionals in New Castle, New Hampshire. All contractors are licensed, insured, and verified through our rigorous screening process.

#1

R.F. Lavoie Plumbing & Heating

4.8
(127 reviews)
Verified

A family-owned and operated plumbing and heating company serving the Seacoast area for over 40 years. They specialize in both residential and commercial plumbing, offering 24/7 emergency services, expert drain cleaning, water heater installation/repair, and full bathroom/kitchen plumbing services. Known for their quick response times and adherence to local codes.

525 Lafayette Rd, Portsmouth, NH 03801

Specialties & Features

24/7 Emergency Service
Water Heater Installation & Repair
Drain Cleaning
Commercial Plumbing
Residential Repipes

Business Information

Years in Business:42 years
Licensed:Yes
Insured:Yes
#2

Donahue Plumbing & Heating

4.7
(94 reviews)
Verified

A trusted local provider with deep roots in the community, offering comprehensive plumbing services for homes and businesses. Their team excels in emergency leak detection and repair, sewer line services, and fixture installation. They are known for using high-quality materials and providing clear, upfront pricing.

1900 Lafayette Rd, Portsmouth, NH 03801

Specialties & Features

Leak Detection & Repair
Sewer Line Services
Bathroom Remodel Plumbing
Emergency Repairs
Fixture Installation

Business Information

Years in Business:35 years
Licensed:Yes
Insured:Yes
#3

Proulx Plumbing & Heating

4.6
(118 reviews)
Verified

Provides reliable and efficient plumbing solutions with a strong focus on customer service. Their services include all aspects of residential plumbing, from clogged drains and garbage disposal repair to full water heater replacements and pipe installation. They offer extended hours for emergency calls.

150 Greenleaf Ave, Portsmouth, NH 03801

Specialties & Features

Residential Plumbing
Drain Cleaning
Water Heater Services
Garbage Disposal Repair
Emergency Service

Business Information

Years in Business:28 years
Licensed:Yes
Insured:Yes

Why These Are the Top Plumbing Contractors in New Castle

New Castle, NH is a small coastal island town with many historic homes. The local plumbing market is served primarily by established contractors from the larger neighboring city of Portsmouth. Common issues include dealing with older plumbing systems in historic properties, corrosion from salt air, and the need for solutions that preserve historical integrity. The proximity to the ocean also means many homes may have unique septic or well water systems. The top providers are experienced with these local challenges and the specific building codes of the area.

High Ratings

4.7+ star average from verified customer reviews

Fully Licensed

All contractors are properly licensed and insured

Proven Experience

10+ years average experience in the industry

Local Experts

Familiar with New Castle regulations and climate

Frequently Asked Questions About Plumbing in New Castle

Get answers to common questions about plumbing services in New Castle, New Hampshire.

1What are the most urgent plumbing issues I should prepare for during a New Castle winter?

The top concerns are frozen and burst pipes due to our coastal, windy cold snaps. Insulate pipes in unheated crawl spaces and basements, and know how to shut off your main water valve. Also, ensure your heating system's boiler or hot water heater is serviced in the fall to avoid a mid-winter failure. Promptly addressing drips is crucial, as they can quickly freeze and block pipes.

2Are plumbing service costs higher in New Castle compared to other parts of New Hampshire?

Yes, you can expect rates to be moderately higher due to New Castle's exclusive island location and the travel time/costs for plumbers. Seacoast region labor rates and the higher cost of living also influence pricing. Always get detailed, written estimates that include any potential trip charges for crossing the bridge to the island.

3Do I need a permit for plumbing work in my New Castle home, and how does that process work?

Yes, most significant plumbing work (like moving pipes, adding bathrooms, or replacing water heaters) requires a permit from the New Castle Building Department. A licensed master plumber must pull this permit. This ensures work complies with the NH State Plumbing Code and local ordinances, which is critical for safety, insurance, and preserving your home's value in our historic community.

4How do I choose a reliable plumber who services New Castle, NH?

Always verify they are licensed and insured by the State of New Hampshire. Choose a plumber with extensive experience in older homes, which are common here, as they understand legacy pipe systems and potential challenges. Seek local references and read reviews specifically about their responsiveness, as getting timely service to the island during a seasonal surge or storm is important.

5What should I do if I have low water pressure in my historic New Castle home?

This is a common issue in older properties. First, check if it's isolated to one fixture or whole-house. A likely culprit is galvanized steel pipes, common in older Seacoast homes, which corrode and restrict flow internally. A reputable local plumber can perform a camera inspection to diagnose this. Solutions may range from cleaning specific lines to a strategic partial re-pipe, often using durable PEX for our climate.