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Find Basement drainage channels installers in Portsmouth

Avatar for NH Projects LLC
NH Projects LLC
5.0(
20
)

Serving Portsmouth, NH and surrounding areas

Approved

In business since 2021

Free estimates

Customers say: Quick response

"Lenny and Nick are great to work with! We are finishing our basement and they just completed the bathroom to start and it came out fantastic! They have excellent contacts to help with the plumbing and electricity and made the whole process easy for us. We can't wait to keep working with them and completing our basement."
Our Work
Our Work
Our Work
Our Work
Our Work

+8

Response time5 hrs
1 neighbors recently requested a quote
Recommended by84%of homeowners
Avatar for LEAL RESTORATION SERVICES INC
LEAL RESTORATION SERVICES INC
5.0(
9
)

Serving Portsmouth, NH and surrounding areas

Approved

In business since 2002

Emergency services offered

Warranties offered

"We hired Leal Restoration to clean up water damage on three floors of our house. They came early on a Saturday morning, worked all weekend and finished the job on Monday. This included drying out the area, removing debris, and replacing a ceiling. The work was done efficiently and carefully. Leal turned a disaster area into a clean and back to normal living space in 3 days. Amazing!"
Mold Removal 100% Done
Mold Removal  Services
Black Mold Services
Black Mold Services
Black Mold Inspection Services

+52

Response time4 hrs
Response rate100%
10 neighbors recently requested a quote
Avatar for Groundworks
Groundworks
4.6(
26
)

Serving Portsmouth, NH and surrounding areas

Approved (Corporate)

In business since 1996

Free estimates

Warranties offered

"Everything completed as rescheduled after a weather delay. The crews arrived on time, did the project (2 foundation Cracks, and cleaned up"
Foundation
Foundation
Foundation
Basement
Basement

+16

Response time12 hrs
168 neighbors recently requested a quote
Recommended by56%of homeowners
Avatar for Heritage Home Service
Heritage Home Service
4.2(
1,355
)

Serving Portsmouth, NH and surrounding areas

Approved (Corporate)

In business since 1988

Emergency services offered

Warranties offered

"Did a fine job - basement is dry. Overall an excellent experience. Had one issue with their electrician who didn’t read the plan and installed to the wrong box -"
Golf Tournament
Water quality team
HVAC tech
Electrical team
Bryan, electrician

+24

203 neighbors recently requested a quote
Recommended by91%of homeowners
Avatar for Morton Excavation
Morton Excavation
4.9(
13
)

Serving Portsmouth, NH and surrounding areas

Approved

In business since 2016

Free estimates

Small jobs welcome

"These guys did an amazing job on my beautiful block wall/patio. They were quick, friendly, efficient, and did quality work for a fair price! Very satisfied, would highly recommend."
Gallery
Fire Hydrant install
8in ductile iron / fire hydrant install
Culvert Drainage
Culvert Drainage

+11

7 neighbors recently requested a quote
Recommended by63%of homeowners
Avatar for Derry Plumbing & Heating
Derry Plumbing & Heating
3.7(
43
)

Serving Portsmouth, NH and surrounding areas

Approved

In business since 1989

Free estimates

Emergency services offered

"When our existing water tank started to falter we knew we needed to upgrade. Derry Plumbing and Heating installed a phenomenal tankless system for our 3800+ sq foot home and we never had a reason to complain. Our energy costs went down and we always had hot water for our family of 5 and numerous guests."
Rinnai install
Designer shower
Drain line
Showroom shower/tub stall
Faucet fixtures

+2

Response time9 hrs
Response rate86%
Recommended by46%of homeowners
Avatar for Hard Tech Construction
Hard Tech Construction
3.3(
6
)

Serving Portsmouth, NH and surrounding areas

Approved

In business since 2017

Emergency services offered

Warranties offered

"Retaining Wall/Walkway- Ben was on time to look at the project and answered any questions or concerns I had. Ben and his crew showed up on the day scheduled and not stop, these men work hard. Very, very happy with the finished product. Ben is very personable and I would hire him again in a heartbeat! Great Job Tracy L. Herbert."
Response time2 days
19 neighbors recently requested a quote
Recommended by100%of homeowners
Avatar for Broman Contracting LLC
Broman Contracting LLC
New to Angi

Serving Portsmouth, NH and surrounding areas

Approved

Free estimates

Emergency services offered

Warranties offered

\nBroman Contracting LLC is a locally owned and operated company with over 20 years of experience providing trusted foundation health solutions to homeowners. We specialize in protecting homes from the ground up, offering services like waterproofing, foundation repair, crawlspace encapsulation, drainage systems, sump pumps, and radon mitigation. Our goal is to keep your home safe, dry, and structurally sound while delivering honest recommendations and high-quality workmanship you can rely on.

Before
Excavation
Backfill
Basement Waterproofing
Finished Concrete

+2

Avatar for NH Dry Basement, LLC
NH Dry Basement, LLC
4.8(
72
)

Serving Portsmouth, NH and surrounding areas

In business since 1980

Free estimates

Emergency services offered

"My experience with NH Dry Basement has been excellent since day 1. Mike came promptly to quote the job, his crew members were polite, and due to my problem of having constant water in my basement, Mike squeezed me in at his first opportunity. It was a pleasure working with Mike and the crew. And, I haven't had a drop of water since."
Basement
Basement
Flooded Basement
Flooded Basement
Flooded Basement

+1

Response time2 days
Recommended by97%of homeowners
Avatar for Mr. Drains, Inc.
Mr. Drains, Inc.
4.2(
15
)

Serving Portsmouth, NH and surrounding areas

In business since 2015

Free estimates

Emergency services offered

"Replaced blocked plumbing in basement and under kitchen sink. Work was performed quickly and professionally. Would use Mr. Drains for any future plumbing issues."
Drain repair
Drain repair
PVC main sewer line
Main line pvc pipe
Kitchen sink line

+10

Response time4 hrs
Response rate90%
Recommended by91%of homeowners
...
Showing 1-10 of 55
FAQs for basement drainage channels installation projects in Portsmouth, NH

Expect a well-built French drain to last 30 to 40 years. By channeling both surface- and ground-water away from your foundation, the system relieves hydrostatic pressure and helps prevent costly structural damage. Choose a pipe with a quality cloth filter to keep sediment out and extend the drain’s life. A quick annual inspection and routine cleanouts will keep water flowing freely, ensuring the system continues to protect your home for years to come.

Most French drains sit two feet below grade, but depth ultimately depends on the problem you’re solving. For puddling rainwater or snowmelt, a shallow curtain drain at lawn level often does the trick. To handle rising groundwater, pros dig deeper, down to the footing, and run the pipe beneath the basement slab. A drainage contractor will determine the optimal depth for your specific soil conditions and water issues.

A properly installed interior French drain captures water at the slab, channels it to a sump pit, and directs it safely outside, preventing basement floods before they occur. Because the pipe sits just under the floor edge, a plumber can reach it easily for cleaning or repairs. Pairing the drain with a reliable sump pump gives you the best long-term protection.

Hire a contractor who installs drainage systems every day—typically a foundation specialist, drainage contractor, experienced landscaper, or plumber with waterproofing experience. These pros understand slope, soil, and local codes, and they have the equipment to trench safely around utilities. Ask for references and photos of recent jobs to be sure they can design a system that keeps water off your foundation for decades.

Once the drain is in, patch the yard by reseeding bare spots or replacing plants the crew removed. Inside, look for ways to add value—finishing the basement or upgrading interior waterproofing while the space is open often costs less now than later. Schedule a quick annual checkup to flush sediment and confirm the pipe and sump pump are clear. Consistent maintenance ensures the drain functions properly and protects your investment.

Most policies don’t cover the cost of repairing a French drain itself, but they may provide coverage for water damage if the system fails. Coverage varies by insurer, so be sure to read the fine print or contact your agent before any issues arise. If you live in a high-risk flood zone, consider a separate flood policy to close the gap. Knowing your coverage in advance helps you budget for repairs and avoid unexpected costs.

The Portsmouth, NH homeowners’ guide to basement drainage channels installations

From average costs to expert advice, get all the answers you need to get your job done.