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Best basement waterproofing pros near Dennis, MA

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TRUSTED BY DENNIS, MA HOMEOWNERS

  • Average homeowner rating star icon4.6
    Average homeowner rating
  • Verified reviews icon25
    Verified basement waterproofing services reviews

Top-Rated Basement waterproofing pros in Dennis - 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 Dennis, MA and surrounding areas

Approved

In business since 1984

Free estimates

Emergency services offered

"It went well. They are being professional in their follow-up as they are trying to have us install an expensive basement drainage/pumping system. We haven't decided yet, as it will be part of our basement gut/rehab project."
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+5

Response time2 days
4 neighbors recently requested a quote
Recommended by89%of homeowners
Avatar for Key Waterproofing Construction
Key Waterproofing Construction
4.6(
233
)
Foundation, Basement or Crawlspace - Waterproofing / EncapsulationBasement Drainage Channels - RepairBasement Drainage Channels - Install

Serving Dennis, MA and surrounding areas

Approved (Corporate)

Super Service Award Winner

In business since 2014

Free estimates

Warranties offered

"Recently needed some waterproofing work done in my basement, proceeded to look up 3-4 different companies thet did basement water proofing work decided to go with Key Waterproofing and it was a "GREAT CHOICE"!!! Was notified as to when the job was to be done, 3 great guys showed up,right on time, went right to work installing a Sump-Pump in our basement floor to takecare of our water problems. They did neat, high quality work everything was cleaned up with a "job that was well done". "Very satisfied" would highly recommend Key Waterproofing for all your waterproofing needs!!!!!!!"
Response time12 hrs
101 neighbors recently requested a quote
Recommended by88%of homeowners
Avatar for DryZone Basement Systems, Inc.
DryZone Basement Systems, Inc.
4.0(
18
)
Foundation, Basement or Crawlspace - Waterproofing / Encapsulation

Serving Dennis, MA and surrounding areas

Approved

In business since 2007

Free estimates

Emergency services offered

DryZone Basement Systems, Inc., is your local expert for ALL THINGS BASEMENTY! We specialize in basement waterproofing, foundation and crawl space repair, as well as sump pump installation. We offer free estimates for property owners across Massachusetts and Rhode Island.\n\nThe company is a trusted and valued member of the Basement Systems network and upholds the high standards of the company. DryZone Basement Systems, Inc., thoroughly trains their staff and experts for crawl space and basement waterproofing at the Basement Systems, Inc., corporate headquarters in Connecticut and always offers a 100% customer satisfaction guarantee.

Before
After
Basement Bathroom
Drain System
Drain System

+51

Response time1 day
28 neighbors recently requested a quote
Recommended by92%of homeowners
Avatar for Beacon Drain Service, LLC
Beacon Drain Service, LLC
5.0(
17
)
Basement Drainage Channels - Install

Serving Dennis, MA and surrounding areas

Approved

In business since 2020

Free estimates

Emergency services offered

"Your company is outstanding and we are extremely happy. Our technician Garett was prompt and polite. He was very knowledgeable and explained things about our situation that we were totally unaware of. Potentially saving us time and money down the road. Garrett was attentive to our to our needs and was very careful of our pets as he was working. We would definitely use Beacon Drain Service again."
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Response time1 day
Recommended by93%of homeowners
Avatar for Watchman Waterproofing
Watchman Waterproofing
4.7(
14
)
Basement Drainage Channels - InstallBasement Drainage Channels - RepairFoundation, Basement or Crawlspace - Waterproofing / Encapsulation

Serving Dennis, MA and surrounding areas

In business since 2011

Free estimates

Emergency services offered

"Dave was extremely helpful and super nice (and patient). We had some delays in our overall project and he continue to connect with me via phone and check in. The work in the basement was done quickly and neatly. I am so impressed with the Watchman team from Doreen in the office, Dave and the person who did the installation. You will not be disappointed with Watchman!!!"
Wet
Basic Sump Pump
Downspout Management
Water under the floor
Clean Install

+4

Recommended by90%of homeowners
New England Waterproof
5.0(
9
)
Foundation, Basement or Crawlspace - Waterproofing / Encapsulation

Serving Dennis, MA and surrounding areas

In business since 2002

Free estimates

At New England Water Proofing 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 the start to the 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 and friendly manner. Our reputation is based on service, safety, and quality, regardless of how large or small the job.

Response time10 mins
Response rate100%
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Basement Waterproofing FAQs, answered by experts

Signs include persistent dampness, mold or mildew presence, musty odors, and visible water stains. If any of these occur, it is advisable to contact a professional for an inspection.

Some basement waterproofing methods can actually cause your water or moisture problems to get worse, which is why it’s so important to call in a professional who knows how to solve your underlying issue and use the appropriate waterproofing methods. An example of this would be applying latex waterproofing paint to the insides of your basement walls without fixing the water issue outside. Doing so can trap moisture in the basement walls, which can promote mold growth, peeling paint, and even damaged concrete. However, when done by a professional, the only downside to basement waterproofing is the up-front cost.

The most cost-effective foundation repair is using masonry patches and sealants to seal foundation cracks and offer some support to prevent further damage. These methods are used to fix minor foundation cracks quickly. However, they’re not suitable as a long-term solution, and they only offer minimal stability. On average, masonry patches and sealants cost $500, but a sealant like an epoxy crack injection can total over $2,000. If you’re handy and only looking for a temporary solution until you contact a local foundation repair contractor for a more permanent one, you can save hundreds by DIYing this repair.

Damp proofing and waterproofing are both methods to help keep your basement dry. Damp proofing keeps soil moisture from entering your basement, which is helpful since your basement is underground. Waterproofing, however, keeps both soil moisture and liquid water out of the basement, which is essential, especially if you live in a wet environment. Because it’s more protective, waterproofing typically costs more than damp proofing.

A vapor barrier keeps moisture out of the crawl space, while insulation reduces the amount of unconditioned air—and sometimes moisture—that enters the space. Coupling a vapor barrier with insulation can help prevent humidity and related moisture damage in a crawl space while also making your home more energy-efficient. Just be sure to use insulation that won’t get damaged from moisture, like rigid foam board or expanding spray foam insulation.

The Dennis, MA homeowners’ guide to basement waterproofing services

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