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Verified Reviews for Basement Waterproofing pros in Jefferson, SD

*The Angi rating for Basement Waterproofing companies in Jefferson, SD is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Basement Waterproofing needs.

*The HomeAdvisor rating for Basement Waterproofing companies in Jefferson, SD is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Basement Waterproofing needs.

Last update on April 22, 2026

Find Basement waterproofing pros in Jefferson

Avatar for Groundworks
Groundworks
5.0(
64
)

Serving Jefferson, SD and surrounding areas

Approved (Corporate)

Super Service Award Winner

In business since 2000

Free estimates

Warranties offered

"Groundworksâ listened to our input and throughly evaluated the requirements to support the basement walls and prevent water from coming in. They were on time and communicated clearly and timely. The Foreman did an evaluation and recommended a couple changes to the plan that I agreed with and weâ re beneficial. The 3 workers knew what they were doing and worked hard. I appreciate the manner they communicated and they were very friendly. Overall, they did a great job!"
Protect Your Basement
Correct Your Wet Basement
Protect Your Basement
Waterproof Your Basement
Protect Your Concrete Before & After

+16

197 neighbors recently requested a quote
Recommended by75%of homeowners
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Avatar for Blackburn Foundation Repair, LLC
Blackburn Foundation Repair, LLC
4.6(
23
)

Serving Jefferson, SD and surrounding areas

Approved

In business since 1992

Free estimates

Warranties offered

"Excellent service! Pro was nice, easy to work with, professional! Never would have known he was here, he cleaned the working area so well! I would definitely recommend Blackburn Basement!!"
Crawl Space Repair
Crawl Space Repair
Response time1 day
98 neighbors recently requested a quote
Recommended by80%of homeowners
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Kj construction llc
4.7(
42
)

Serving Jefferson, SD and surrounding areas

In business since 2011

Free estimates

Emergency services offered

"Wow I got a pro when I hired Kevin from KJ Drywall to waterproof my basement. Not only did they do an excellent job but went beyond what they contracted to do. I recommended them to neighbors and KJ (Kevin) treated them in the same professional and efficient manner. Highly recommend KJ Drywall."
Response time1 day
Response rate88%
Recommended by97%of homeowners
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Avatar for Dakota Basement Systems, LLC
Dakota Basement Systems, LLC
5.0(
2
)

Serving Jefferson, SD and surrounding areas

In business since 2006

Free estimates

Credit card accepted

"They came in and did the work in a timely manner and cleaned up after they were done and left the basement how it was when they got there."
Water
Finished
Work
Finished
Finished

+102

Response time7 hrs
Recommended by100%of homeowners
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Avatar for Enhanced Basements Foundation Repair LLC
Enhanced Basements Foundation Repair LLC
New to Angi

Serving Jefferson, SD and surrounding areas

In business since 2024

Free estimates

Emergency services offered

Enhanced Basements foundation repair offers reliable and affordable foundation repair solutions. Our dedicated team is committed to providing high-quality services to address various foundation issues. We take pride in our work and strive to ensure the safety and stability of your property.

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Underground Specialists, LLC
New to Angi

Serving Jefferson, SD and surrounding areas

In business since 2000

Free estimates

We are committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty, and personal responsibility. Our distinction is the quality of service we bring to our customers. Alex prides himself on the cleanliness, speed and precision of the work that he provides. For several years now he has enjoyed working with one happy customer after the next and he looks forward to helping you next! Give Alex a call today.

Response time12 hrs
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Showing 1-10 of 15
Basement Waterproofing questions, answered by experts

Underfloor insulation alone will not cause moisture and mold, but improper installation can. Although the purpose is to seal any drafts, your subfloor still needs ventilation. If you seal the area too tightly and prevent all airflow, this can cause moisture to get trapped. This moisture eventually leads to mold and—if your floors are wood—rotting.

Regular inspections, maintaining proper grading around the foundation, and keeping gutters clear are advisable. Vapor barriers and sealants may need checking for wear after several years.

Thankfully, you do have a few sump pump backup options in case it fails. One option is a battery-powered backup sump pump. Another option is using a portable backup generator as a power supply for your sump pump. Unlike a battery-powered backup which has limited power, a generator can run around the clock for as long as you need it. 

Or you can opt for a water-powered backup pump, which uses your home’s water supply as a source of power. However, this may not be the best option if you find your house frequently has low water pressure.

Yes, the air from a damp basement can travel up into your living area through a process called the stack effect, so moisture, mold spores, and other debris in your basement air can all decrease your indoor air quality on your main floors. Additionally, damp basements can promote the rotting of building materials, which can damage flooring, insulation, and framing on your first floor in addition to materials in the basement.

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 Jefferson, SD homeowners’ guide to basement waterproofing services

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

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