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Best basement waterproofing pros near Onamia, MN

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

Avatar for Groundworks
Groundworks
4.5(
282
)
Foundation, Basement or Crawlspace - Waterproofing / EncapsulationBasement Drainage Channels - InstallBasement Drainage Channels - Repair

Serving Onamia, MN and surrounding areas

Approved (Corporate)

Super Service Award Winner

In business since 2005

Free estimates

Warranties offered

"Gregg Poindexter and Dan Supar were incredibly knowledgeable, thorough and helped me navigate my basement waterproofing issues. They took their time and made sure everything was inspected fully. And even went above and beyond. Very happy with their service!"
Foundation
Foundation
Foundation
Foundation
Foundation

+16

Response time3 days
137 neighbors recently requested a quote
Recommended by84%of homeowners
Avatar for American Waterworks
American Waterworks
4.5(
173
)
Foundation, Basement or Crawlspace - Waterproofing / Encapsulation

Serving Onamia, MN and surrounding areas

In business since 1989

Free estimates

Warranties offered

"We had a massive project including foundation repair, waterproofing drainage system installation and crawl space encapsulation. We were very pleased with the work and the professionalism . We also appreciated everyoneâ s responses to all our questions before and during the project."
Another Sinking Floor
Dirt Crawlspace in Elk Mound, WI
Concrete stoop had sunk over 6 inches
Foundation Failure Signs
Increased Efficiency of Crawlspace in Elk Mound

+156

Response time4 hrs
575 neighbors recently requested a quote
Recommended by91%of homeowners
Avatar for Integrity Sewer Solutions
Integrity Sewer Solutions
5.0(
12
)
Basement Drainage Channels - Install

Serving Onamia, MN and surrounding areas

In business since 2024

Emergency services offered

Warranties offered

"Greydon and his team made this project I was dreading seamlessly easy and ALSO affordable. I was provided 3 other quotes ranging from $8,000-$15,000. He was straight forward with me and kept me updated in all aspects. I’d gladly pay $5,000 for a sewer repair to work with a honest, dependable and all around amazing company!"
Root intrusion compromised pipe
Drain cable that was was stuck in a line
Obstruction cause by inadequate liner cutout from previous repair company
New installed dual cleanouts access
Dual directional cleanout installation with the risers installed

+10

Recommended by91%of homeowners
Avatar for Betterliving Sunrooms By Portico
Betterliving Sunrooms By Portico
3.7(
41
)
Basement Drainage Channels - InstallBasement Drainage Channels - RepairFoundation, Basement or Crawlspace - Waterproofing / Encapsulation

Serving Onamia, MN and surrounding areas

In business since 2009

Credit card accepted

"We contacted them for an estimate on our basement.  Initial phone call and connection went well, very professional, quick, and prompt.  Once the rep was at our home he went into a "pitch" vs. listening to what we said we already knew we wanted.  We even had a sketch.  Eventually we went to review the space, take measurements, etc.  We then started to pick out materials......he brought all the samples but then put together an evaluation based on square foot and overall price of our home and used that based on the square footage of our basement to determine a "fair" value........which was $100/sq ft.  That would have equated to over $100,000 basement.  Then he said how much "fairer" their price was at the quoted rate.  We were too far apart in our estimates which is fine with me, but at the end he said if I obtained a quote that was lower ~ to give him a call and they'd see what they can do.  At that point, I believe "no thanks".  Give me your best price up front.  The entire visit took almost 3 hours.  It was a big waste of time for all unfortunately as we had no intent to spend that much.
"
Additional Photos
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+3

Recommended by69%of homeowners
RD Concrete LLC
4.0(
8
)
Foundation, Basement or Crawlspace - Waterproofing / Encapsulation

Serving Onamia, MN and surrounding areas

In business since 2022

Free estimates

Emergency services offered

We take great pride in our expertise, quality and customer service that we provide. We exceed the consumers expectations. It is our mission to provide excellent workmanship and complete customer satisfaction from start to completion of a project. In order to understand the needs and expectations of our customers, we take our time to communicate with every customer in a professional manner. Our reputation is based on service, safety, and quality, regardless of how large or small the job.

Fire Ring
Patio
Front Entry Sidewalk
Garage Slab
Front of House Patio

+7

Response time3 days
Recommended by57%of homeowners
NorthStar Basements
New to Angi
Foundation, Basement or Crawlspace - Waterproofing / Encapsulation

Serving Onamia, MN and surrounding areas

In business since 2010

Free estimates

Credit card accepted

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 manner. Our reputation is based on service, safety, and quality, regardless of how large or small the job.

Avatar for Affordable Drainage Systems, Inc.
Affordable Drainage Systems, Inc.
3.0(
3
)
Basement Drainage Channels - InstallBasement Drainage Channels - RepairFoundation, Basement or Crawlspace - Waterproofing / Encapsulation

Serving Onamia, MN and surrounding areas

In business since 2011

Free estimates

Our company is based on the belief that our customers' needs are of the utmost importance. Our entire team is committed to meeting those needs. As a result, a high percentage of our business is from repeat customers and referrals. \n \nWe would welcome the opportunity to earn your trust and deliver you the best service in the industry.

excavating
excavating down to footings
Excavation
Excavation
Ready for Core fill

+21

Response time2 days
Recommended by66%of homeowners
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Basement Waterproofing FAQs, answered by experts

It is better to have a crawl space that is tailored to the outside temperature, your needs, and the season. For example, it is much better to have a vented space when it’s very hot outside and your AC bills are sky-high. Conversely, when the temperature drops and humidity rises, it is almost always better to have your vents shut and covered if possible.

Due to the nature of basements, some level of waterproofing is necessary to prevent water from seeping in and causing damage. Some definitive signs that your basement needs waterproofing measures or needs existing waterproofing measures need to be updated include:

  • Water in your basement, including damp walls or puddles on the floor

  • Mold spots in your basement

  • Musty smells or odors

  • Warped doors or walls

  • Cracks in walls

  • Insect issues, such as cockroaches and termites

While it’s possible to seal a foundation yourself, it’s not recommended, as it’s a tricky and labor-intensive job. Foundation sealing is best left to the pros to save yourself time, remove the risk of doing it wrong, and keeping yourself safe. Call a foundation repair professional near you to see what the job will cost.

Whether your homeowners insurance covers slab leak repairs depends on your specific policy and the cause of the leak. Many policies cover slab leaks resulting from a covered peril, such as a natural disaster, a falling tree, or pipes freezing and bursting within the slab. However, damage caused by invading tree roots, corrosion, or leaks from appliances may not be covered by a standard policy. It's a good idea to also check your home warranty plan for potential coverage if an appliance is the source. Contact your insurance provider for a full explanation of what your policy covers.

Installing a bathroom in a basement isn’t a project for most homeowners. Many parts—plumbing, electricity, and carpentry—go into this project, each requiring expert-level knowledge and tools. One miscalculation can lead to very expensive repairs. Plus, some homeowner’s insurance might not pay for damages caused by a homeowner DIYing this project. You can protect yourself by allowing the pros to complete this job for you. 

The Onamia, MN homeowners’ guide to basement waterproofing services

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