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Best basement waterproofing pros near Keystone, SD

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

Avatar for Blackburn Foundation Repair, LLC
Blackburn Foundation Repair, LLC
4.6(
23
)
Foundation, Basement or Crawlspace - Waterproofing / Encapsulation

Serving Keystone, 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
90 neighbors recently requested a quote
Recommended by80%of homeowners
Sunken Foundation Solutions
4.9(
9
)
Basement Drainage Channels - InstallBasement Drainage Channels - RepairFoundation, Basement or Crawlspace - Waterproofing / Encapsulation

Serving Keystone, SD and surrounding areas

Approved

In business since 2018

Free estimates

Offers commercial services

"Bill and his crew exceeded our expectations. Both our water damaged basement and our failing garage foundation required a change in course and they communicated options and provided excellent and economic solutions. They arrived early and stayed late 6 days a week to work around our weather. They provided extras as we went along and worked through some tough weather conditions. The daily communication was the best. Their prices saved us so much money. Their clean-up left our place in better condition than when they arrived. This company is going places. We will use them for any future needs."
Foundation Replacement in Rapid City
Concrete Stair Foundation
Foundation Repair
Retaining Wall Install
Retaining Wall Repair

+21

Response time1 day
Response rate85%
Recommended by100%of homeowners
Avatar for 413 Services
413 Services
5.0(
14
)
Basement Drainage Channels - Install

Serving Keystone, SD and surrounding areas

Approved

In business since 2021

Free estimates

Emergency services offered

"The crew was very professional and polite, got the job done quickly and efficiently. Also stated would come back if the insurance company was not satisfied with the work. Great company to work with and was easy to work with also. Thanks so much Jeb and the crew."
Motion Unlimited
Motion Unlimited
Running out of daylight
Equipment
BC 1800

+20

Response time2 days
20 neighbors recently requested a quote
Recommended by71%of homeowners
Avatar for Loyal Plumbing Heating and Cooling
Loyal Plumbing Heating and Cooling
4.6(
36
)
Basement Drainage Channels - InstallBasement Drainage Channels - Repair

Serving Keystone, SD and surrounding areas

In business since 2008

Credit card accepted

Offers commercial services

"The pro videoed my pipes for relining purposes. He was very thorough and answered all my questions. Royal plumbing seems to have very professional people working for them. He was straight forward and told me exactly what needed to be down. He gave me a rough estimate of the cost, but told me he would have a written quote for me by the end of the day."
A/C
Furnace
Water Heater
Response time1 day
Response rate100%
Recommended by34%of homeowners
Avatar for Enhanced Basements Foundation Repair LLC
Enhanced Basements Foundation Repair LLC
New to Angi
Foundation, Basement or Crawlspace - Waterproofing / Encapsulation

Serving Keystone, 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.

Owl Creek Enterprizes, LLC
3.0(
6
)
Basement Drainage Channels - InstallFoundation, Basement or Crawlspace - Waterproofing / Encapsulation

Serving Keystone, SD and surrounding areas

In business since 2000

Free estimates

Warranties offered

"Their work was very good, so good that I kept adding more work for them to do. They were kind and courteous and strived to achieve the best possible work. Their work ethic and price were exceptionaly honest and fair. If I have more work in the future I will definitely hire them again."
01
 stamp work
03
04
05

+27

Recommended by100%of homeowners
Showing 1-10 of 20
Basement Waterproofing FAQs, answered by experts

Yes, water and water vapor can seep through cracks in your basement floor, which means you should address all basement floor cracks, even if they don’t indicate structural issues. Sealing settling cracks and shrinkage cracks is a good idea to keep water and moisture outside where it belongs. Doing so can improve your indoor air quality, reduce the risk of mold growth, make your home more comfortable, and help prevent pest infestation.

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.

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.

The purpose of crawl space encapsulation is to prevent mold by blocking moisture and reducing humidity. If the vapor barrier is properly installed, it significantly reduces the chance of mold developing within the crawl space. However, mold can sometimes grow behind the encapsulation material, but it will be sealed away from the main area. Additionally, moisture can still condense inside the encapsulated space, so if you notice excess humidity, installing a dehumidifier is recommended to prevent mold and mildew growth.

A crawl space encapsulation isn’t always necessary, but it’s a wise choice, especially if you live in an area that sees a lot of precipitation. Sealing a crawl space not only reduces damage caused by moisture, mold, and pests, but it also increases your home’s value. It can also save you money by reducing energy bills and avoiding costly repairs for structural or foundation damage.

The Keystone, SD homeowners’ guide to basement waterproofing services

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