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Best basement waterproofing pros near Concord, NH

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TRUSTED BY CONCORD, NH HOMEOWNERS

  • Average homeowner rating star icon4.2
    Average homeowner rating
  • Verified reviews icon15
    Verified basement waterproofing services reviews

Top-Rated Basement waterproofing pros in Concord - Updated Nov 2026

Avatar for Pioneer Basement
Pioneer Basement
4.5(
265
)
Foundation, Basement or Crawlspace - Waterproofing / EncapsulationBasement Drainage Channels - InstallBasement Drainage Channels - Repair

Serving Concord, NH and surrounding areas

Approved

In business since 1984

Free estimates

Emergency services offered

"They advice, and had all our questions answered on sensible and affordable options. Very knowledgeable, prompt, polite, efficient, and thorough team! We are happy with their waterproofing services in our basement (fast sump pump and a grate trench with a discharge line that goes 15 feet to the outside bubbler) as well as crawl space shield installed under our addition. It works well, and Pioneer checked a month later and a year after for inspection and cleaning. A+ work and workers."
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+5

Response time2 days
4 neighbors recently requested a quote
Recommended by89%of homeowners
Avatar for Northern Basement Systems
Northern Basement Systems
4.6(
21
)
Foundation, Basement or Crawlspace - Waterproofing / EncapsulationBasement Drainage Channels - InstallBasement Drainage Channels - Repair

Serving Concord, NH and surrounding areas

Approved

In business since 2010

Free estimates

Warranties offered

"Northern basements was able to fit us in quickly, pulled our crooked cement wall back in-place and sealed the wall to prevent future leaks.  The work was timely, communication was friendly and detailed, and price was as to be expected for the large amount of work that needed to be done.  We are very pleased with the whole process as well as the results.
"
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+25

Response time1 day
3 neighbors recently requested a quote
Recommended by88%of homeowners
Avatar for NH Projects LLC
NH Projects LLC
5.0(
20
)
Basement Drainage Channels - Install

Serving Concord, 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
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+8

Response time5 hrs
Response rate87%
1 neighbors recently requested a quote
Avatar for IDEAL SOLUTIONS LLC
IDEAL SOLUTIONS LLC
4.8(
13
)
Foundation, Basement or Crawlspace - Waterproofing / Encapsulation

Serving Concord, NH and surrounding areas

Approved

In business since 2020

Free estimates

Credit card accepted

"I had an excellent experience with Ideal Solutions on my basement remodel. From start to finish, the team was professional, communicative, and detail-oriented. The quality of the work exceeded my expectations, and the finished basement turned out even better than I imagined. Everything was completed on time, and they made the entire process smooth and stress-free. I would absolutely recommend Ideal Solutions to anyone looking for basement remodeling or home improvement work."
18 neighbors recently requested a quote
Recommended by66%of homeowners
Avatar for Heritage Home Service
Heritage Home Service
4.5(
464
)
Basement Drainage Channels - InstallBasement Drainage Channels - Repair

Serving Concord, NH and surrounding areas

Approved (Corporate)

In business since 1988

Free estimates

Emergency services offered

"I contacted Proactive to replace my water heater because my current oil system a 5 yr old system kept flooding my basement. The tech looked at the system and spent about two hours on his phone reviewing the system. finally he figured out that my return temp was set too low and was automatically expelling the hot water on the ground outside my water tank. I was elated. So many times I called plumbers and the oil company who swapped tanks and switches , costing me several thousands of dollars. when he left he didn't want to charge me even a hundred bucks, the time he spent researching the problem. I tipped him big time. He was worth it. He saved me from unnecessarily buying a multi thousand dollar new system, and he ended the constant and expensive flooding in my basement. Yes, if necessary, I will use Proactive Comfort again!"
Generator Installation
Light Fixture Service
Oultet services
Indoor Outlet Service
HVAC Outdoor Unit

+16

Response time1 day
349 neighbors recently requested a quote
Recommended by94%of homeowners
Avatar for E & Z EXCAVATION LLC
E & Z EXCAVATION LLC
5.0(
23
)
Basement Drainage Channels - Install

Serving Concord, NH and surrounding areas

Approved

In business since 2023

Free estimates

Emergency services offered

"Wanted to have a couple rock walls built at my house so I contacted E&J.They came over the same day gave me a estimate that I could not pass on.They weâ re there the next day and built me 2 beautiful rock walls.These walls were about 25feet each and they did a amazing job.Very professional,really nice equipment,on time,very reasonable with price compared to other companies I called.I couldnâ t be any happier with the work they done.I knew it we be nice but not as nice as it came out.I highly recommend E&J.Thank you E&J"
Rock wall
Rock wall
Rick wall
Culvert
Culvert

+8

Response time8 hrs
Recommended by90%of homeowners
Avatar for Quantum Contracting, LLC
Quantum Contracting, LLC
4.3(
38
)
Basement Drainage Channels - Install

Serving Concord, NH and surrounding areas

Approved

In business since 2015

Free estimates

Credit card accepted

"Tyler and crew were fast and efficient. Would not hesitate to hire again. The work done was exactly what was requested and my deck and gutters came out great! A++"
Small Garden
Complete Landscape Renovation
Grade Work
Brick Pathway
Small Retaining Wall

+23

Response time2 days
Response rate89%
13 neighbors recently requested a quote
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Basement Waterproofing FAQs, answered by experts

Preventing water accumulation involves regular inspections, maintaining effective drainage systems, ensuring proper roof maintenance, and taking preventive measures against heavy rainfall or floods.

Yes, cleaning a crawl space is worth the cost. Although it's an out-of-sight area, neglecting it can lead to significant problems like pest infestations (including termites and carpenter ants), mold, and fungal growth, which can cause structural damage. Regular cleaning helps prevent these issues. While hiring a contractor has ongoing costs, the price for cleaning—typically between $0.50 and $4 per square foot—is much lower than the cost to remediate a pest or mold problem. Additionally, a clean crawl space can lead to improved indoor air quality and more comfortable temperatures in your home.

The most challenging part of finishing a basement is addressing moisture control. Basement waterproofing is an essential task that requires a professional’s skills and knowledge. If you don’t properly waterproof your finished basement, it’ll be vulnerable to dampness, water damage, and mold growth. Ensuring proper insulation and ventilation to combat these issues while meeting building codes adds complexity to your remodeling project.

In most cases, it is safe to live in a home with minor foundation problems, but you should not let the issues persist. Virtually all foundations have small cracks from normal settlement, which are not a structural concern but should be sealed to prevent water intrusion. However, major damage—such as large structural cracks, sinking foundations, or bulging walls—can make a home unsafe. Other issues that can pose safety and health risks include poor indoor air quality from mold or pests, uneven floors, and rotten beams or joists. It is always best to have a foundation repair expert or structural engineer inspect any issues to determine if your home is safe to live in.

You’ll need to reseal the foundation every five to 10 years, depending on the sealant you’ve used, the moisture conditions present in and around your home, and the condition of your foundation. Having a foundation inspection conducted before reapplication can help you catch any problems before you begin resealing. Of course, if you notice any new leaks or other moisture problems at any time, it may be necessary to reseal the foundation sooner.

The Concord, NH homeowners’ guide to basement waterproofing services

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