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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

"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 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
107 neighbors recently requested a quote
Recommended by88%of homeowners
Avatar for Inner Boston Masonry & Construction, Corp.
Inner Boston Masonry & Construction, Corp.
5.0(
43
)
Foundation, Basement or Crawlspace - Waterproofing / Encapsulation

Serving Dennis, MA and surrounding areas

Approved

Super Service Award Winner

In business since 2023

Free estimates

Emergency services offered

"Contacted Mark within 3 days he was at my home and providing a detailed quote. Might seem small but he was the only one out of 4 contractors who actually measured the space to provide an accurate and detailed estimate. He while discussing what I wanted with me made many recommendations and even mentioned ways to get the job done but at a lower cost. He had the estimate to me within 2 days and it was super detailed and broken down with 3 different ways to complete it. He was on time daily as was his crew. Work areas were cleaned daily. He closed up a broken window for us, redid a dirt floor with drainage and concrete, repointed and waterproofed our basement foundation, ripped out and fully replaced basement access stairs. He even noticed a window that was broken we didn’t and closed it up for no charge. He added a drain to the exterior steps at no charge wasn’t in contract he just knew it was needed, the steps he replaced had asphalt around them and he even repaired the asphalt at no c"
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+11

Response time4 hrs
Response rate99%
5 neighbors recently requested a quote
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
24 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

*FREE CAMERA INSPECTION* with any sewer cleaning. We provide on-demand high quality commercial and residential drain cleaning services. We take pride in our high quality work and cleanliness, we also take even greater pride in our low prices. We have only experienced techs with a minimum of 6 plus years in drain cleaning, we provide camera work, small drains such as sinks and tubs all the way up to main sewer lines. We also provide excavation services if any drains need to be replaced.

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Response time1 day
Recommended by93%of homeowners
Avatar for DryZone Basement Systems
DryZone Basement Systems
4.7(
112
)
Basement Drainage Channels - InstallBasement Drainage Channels - RepairFoundation, Basement or Crawlspace - Waterproofing / Encapsulation

Serving Dennis, MA and surrounding areas

In business since 2007

Free estimates

Emergency services offered

"DryZone Basements kept me up to date on my Appointment, called the morning of, arrived on time, checked in with me at the beginning to review scope of work, set up a dust barrier, two (2) workers and the job lead, worked hard throughout the time here. The lead would check in with me in intervals, they were open to answering any questions. Upon finishing, the lead took me around the whole job, explained the work, and allowed me to ask any questions, and provided me responses, and cleaned up the work area very well. Hopefully, we will never have to use, but definitely worth the piece of mind. Thank you."
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TripleSafe Sump Pump
WaterGuard and CleanSpace Wall

+3

Response time1 day
Response rate100%
Recommended by90%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

"I can't say enough about Watchman Waterproofing and the owner Dave. I got a few estimates for a drain because of water coming into my basement and decided to go with this company based on speaking with the owner Dave (Great Personality) and a fair price. He was very through walking me through each step of the process and didn't try to sell me something I didn't need. I needed to have the work done as soon as possible as I'm in the process of moving and with all the rain we've had and the rest of the week was not looking good with more rain to follow. He told me they were extremely busy and wouldn't be able to squeeze me in for a couple of weeks.The other company could start in a few days and their price matched Watchman by a hundred dollars. The next morning I get a call from Dave and he told me they had a cancellation and could start the work the immediatley I was thrilled! The crew showed up and they were very professional from start to finish. Great Company and fantastic owner!!! Thanks Dave :)"
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

Having a trusted crawl space contractor is the key to great encapsulation. If you're not sure how to hire a crawl space pro, begin by asking your neighbors for referrals. Homes in your neighborhood will often have a similar foundation to your house, and personal recommendations are one of the best ways to find a contractor. Additionally, double-check that the contractor has experience with encapsulation as well as proof of their license and insurance.

Basements are commonly converted into game rooms. The potential challenges you may run into include controlling moisture, working with low ceilings, limited natural light, and the need for additional electrical or HVAC work. Addressing these issues can add to the total cost, but it ensures a comfortable and functional space.

Preventing future basement flooding often involves installing sump pumps, improving drainage, sealing foundation cracks, and maintaining gutters. Costs vary, but preventive measures can range from a few hundred to several thousand dollars, depending on the solutions chosen. Investing in prevention can save you money on future flooded basement cleanup costs and repairs.

The best basement waterproofing method depends on the specific issue causing the water intrusion. For minor problems, simple solutions like installing a properly functioning gutter system to direct runoff away and grading the soil to slope away from your foundation can be effective.

If you have more significant water problems, the solution will need to be more robust:

  • For standing water on the basement floor, a floor drain or a sump pump system may be the best solution.

  • For water pooling around the foundation, installing an exterior French drain can intercept water before it reaches the basement walls.

Other effective waterproofing methods, which can be used depending on your home's specific needs, climate, and soil type, include sealing the interior walls, landscape alteration, installing interior drainage systems, and using a dehumidification system to control moisture levels.

A walkout basement is considered to be partially below grade because at least one wall is entirely exposed. In some cases and in specific municipalities, inspectors and appraisers will still count walkout basements as below grade, which means the space can’t serve as living space or be rented out. If you intend on using the area as living space or a separate apartment, you should check with your local building department to make sure it’s legal to do so.

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.