Get matched with top basement waterproofing pros in Gwynn Oak, MD

Recommended by 92% of Angi customers

1987 years of experience

We strive to exceed your expectations in waterproofing, mold remediation and foundation repair. We take pride in our work, that’s why we don’t employ subcontractors. We understand there are a lot of choices out there when choosing a certified installer – we hope you choose us! Protect your home and health from mold and mildew invaders. In our 28 years of experience, we have never encountered a wet basement, crawlspace encapsulation or mold removal condition that we couldn’t handle. Give us a call today for a free, no obligation inspection and professional basement waterproofing system tailored for your home or commercial project. AA Action Waterproofing is licensed, insured and bonded with a A+ Rating with the BBB. Please call us and we’ll happily supply you with references.

"They did a great job. We got 4 quotes; they were neither the cheapest nor the most expensive. Everything was done on schedule, and they did not try to talk us into work we didn't need. Very professional, and they did a good clean-up job. We were initially annoyed that they had not cleanly cut through our tile (which we did not think to request), but we would have ended up pulling up and replacing the cut pieces anyway, so it really doesn't matter. Water problems in our basement have stopped! We are very satisfied."

Michelle R on March 2021

"They did a great job. We got 4 quotes; they were neither the cheapest nor the most expensive. Everything was done on schedule, and they did not try to talk us into work we didn't need. Very professional, and they did a good clean-up job. We were initially annoyed that they had not cleanly cut through our tile (which we did not think to request), but we would have ended up pulling up and replacing the cut pieces anyway, so it really doesn't matter. Water problems in our basement have stopped! We are very satisfied."

Michelle R on March 2021

Basement Gurus, LLC

Basement Gurus, LLC

Customers say: Quality work

2010 years of experience

Basement Gurus LLC, is a locally owned and operated company with over 20 years of experience. We specialize in professional waterproofing services. Our commitment is 100% guaranteed customer satisfaction on every project. Call us today, so that we can give you a free estimate and make your project come to life!

"Steven was very nice and easy to do business with very honest and gave me all kinds of options. Hard to find people like that nowadays just overall great quality people"

Derek K on October 2025

"Steven was very nice and easy to do business with very honest and gave me all kinds of options. Hard to find people like that nowadays just overall great quality people"

Derek K on October 2025

Tru Integrity, LLC

Tru Integrity, LLC

Recommended by 94% of Angi customers

2011 years of experience

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 start to 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.

"I had spoken to several contractors, Mr. Matthews took the time to explain the entire process of what was needed and why this option would be better than the prior. He was the ONLY contractor to show me his license and make me feel comfortable with all he explained and made sure I understood all that was needed. I appreciate all the time he gave me and the great work his crew did to get my foundation fixed and drainage issue fixed!! Thanks! Sara"

Sara S on August 2025

"I had spoken to several contractors, Mr. Matthews took the time to explain the entire process of what was needed and why this option would be better than the prior. He was the ONLY contractor to show me his license and make me feel comfortable with all he explained and made sure I understood all that was needed. I appreciate all the time he gave me and the great work his crew did to get my foundation fixed and drainage issue fixed!! Thanks! Sara"

Sara S on August 2025

JES Foundation Repair

JES Foundation Repair

Customers say: True professional

1993 years of experience

JES Foundation Repair (JES), A Groundworks Company, specializes in helping homeowners with their foundation repair, basement waterproofing, crawl space encapsulation, and concrete needs. Our top priority is providing high-quality home repair solutions and personalized service across Virginia and Maryland. With fully trained technicians, industry-leading products, and nationally backed warranties, JES is here to restore your foundation or crawlspace.

"JES left my home in worse shape and will not return my calls to come repair the damage left. I reached out to them to install a joist support system under my kitchen so that I can renovate this year. There were floor joists under the back door that had been cut during a renovation about 30 years ago. JES installed a jack system but then left my foundation under the door where you can literally see daylight from the basement. I brought this up to the crew before they left late Friday night (they worked long hours just to ?finish? without even asking me if it was okay to trap me at home that late), and the lead just shrugged at me. Shortly after they left, it rained, and sure enough, water poured into my electrical room and all over the freshly poured concrete. I called Friday night, sent an email and text with videos, and called today 3 times. Each time the ?production manager? is ?busy.? Before this, they were perfectly capable of blowing up my phone to see if I could schedule sooner."

Brittany A on June 2025

"JES left my home in worse shape and will not return my calls to come repair the damage left. I reached out to them to install a joist support system under my kitchen so that I can renovate this year. There were floor joists under the back door that had been cut during a renovation about 30 years ago. JES installed a jack system but then left my foundation under the door where you can literally see daylight from the basement. I brought this up to the crew before they left late Friday night (they worked long hours just to ?finish? without even asking me if it was okay to trap me at home that late), and the lead just shrugged at me. Shortly after they left, it rained, and sure enough, water poured into my electrical room and all over the freshly poured concrete. I called Friday night, sent an email and text with videos, and called today 3 times. Each time the ?production manager? is ?busy.? Before this, they were perfectly capable of blowing up my phone to see if I could schedule sooner."

Brittany A on June 2025

Quality 1st Basement Systems, Inc.

4.87(

Quality 1st Basement Systems, Inc.

4.87(

1999 years of experience

Quality 1st Basement Systems is your local, family owned contractor for Basement Waterproofing, Sump Pumps, Basement Finishing, Foundation Repair, Mold Remediation, Crack Repair, Radon Testing and Radon Mitigation, Egress Windows and Egress Stairwell, and Crawlspace Encapsulation too. 100% FINANCING AVAILABLE and free estimates. We have been in business for 25 years and have five star ratings with Google, Yelp, and the BBB. Winner of the 2021 BBB Torch Award for Market Place Ethics and finalist for the 2022 International BBB Torch award for Market Place Ethics. CONTACT US NOW BY CALLING 1-800-768-6745 OR EMAIL US AT [email protected]

"Installed radon filter without any issues or hassle."

Jonathan M on May 2023

"Installed radon filter without any issues or hassle."

Jonathan M on May 2023

Solid Ground Solutions

5.00(

Solid Ground Solutions

5.00(

Recommended by 100% of Angi customers

2017 years of experience

With over 30 years experience in Basement Waterproofing and Mold Remediation services, Andrew A. Altman, Sr. Is a top rated veteran with a proven record beyond belief! In fact the certified, professional Staff has a combined experience of over 60 years. When you hire Best Buy Waterproofing, you are hiring the very best in the industry! They have the WIT attitude ( Whatever It Takes ) and customer satisfaction is their #1 priority as they are "Comitted To Excellence!" Best Buy Waterproofing is licensed, bonded, insured, and certified. They have earned the reputation of standing behind their incredible work and customer satisfaction. They offer free estimates and the very best financing available. They even have No payments & No Interest for 18 months! Best Buy Waterproofing stands behind their lifetime of the structure warranty on their systems. Also on all sump pump systems and their intelligent battery back ups! Best Buy is the ONLY company who offers this kind of warranty on those services as Strength is their Foundation! If you need a dry basement certificate, call us immediately. We are operational 24/7 365!

"Excellent job, excellent experience, highly professional workers!! What else can I say?! And the price was right and fair. They hit our basement waterproofing needs out of the park! Could not be happier!! Would highly recommend to anyone needing waterproofing!"

Joelyn M on July 2023

"Excellent job, excellent experience, highly professional workers!! What else can I say?! And the price was right and fair. They hit our basement waterproofing needs out of the park! Could not be happier!! Would highly recommend to anyone needing waterproofing!"

Joelyn M on July 2023

Quality 1st Basement Systems, Inc

Quality 1st Basement Systems, Inc

Customers say: Super punctual

Recommended by 90% of Angi customers

1998 years of experience

Quality 1st Basement Systems is your local, family-owned contractor for Basement Waterproofing, Sump Pumps, Basement Finishing, Foundation Repair, Crack Repair, Egress Windows and Egress Stairwell, and Crawlspace Encapsulation too. 100% FINANCING AVAILABLE and free estimates. We have been in business for 25 years and have five star ratings with Google, Yelp, and the BBB. Winner of the 2021 BBB Torch Award for Market Place Ethics and finalist for the 2022 International BBB Torch award for Market Place Ethics. CONTACT US NOW BY CALLING 1-800-768-6745 OR EMAIL US AT [email protected]

"Service was great from sales, to installation, to post installation support. Very responsive, very professional. It's hard to find in this 'space'--there are a lot of shady people in basement water damage/repair, and this place exceeded expectations. We've had our repair in place for 4+ years, with only 1 small issue on a wall seam crack, and that was fixed within 24 hours of reporting the issue. Stand up place! Thank you for such great service and support."

john m on January 2024

"Service was great from sales, to installation, to post installation support. Very responsive, very professional. It's hard to find in this 'space'--there are a lot of shady people in basement water damage/repair, and this place exceeded expectations. We've had our repair in place for 4+ years, with only 1 small issue on a wall seam crack, and that was fixed within 24 hours of reporting the issue. Stand up place! Thank you for such great service and support."

john m on January 2024

Basement Waterproofing Nationwide Inc

Basement Waterproofing Nationwide Inc

Customers say: Super punctual

1987 years of experience

Customers say: True professional

Founded in 1987, Steve Taylor was passionate about providing homeowners with an honest approach to basement waterproofing and delivering exceptional customer service for every job. BWN swiftly built a reputable, trusted brand spanning across Maryland and Delaware. Today, as we look back over 35 years of business, our employee dedication and steadfast customer loyalty continue to fuel BWN’s success. This is best demonstrated by BWN’s abundant referral business and 55,000+ customers.

"Quick, efficient, super communication, great cleanup. Highly recommend."

Ellen H on October 2022

"Quick, efficient, super communication, great cleanup. Highly recommend."

Ellen H on October 2022

All Aspects Waterproofing, LLC

All Aspects Waterproofing, LLC

Recommended by 98% of Angi customers

2006 years of experience

All Aspects Waterproofing provides quality work at competitive pricing throughout the Washington/Baltimore Metropolitan area with convenient offices located in Maryland and Virginia. MARYLAND Office 8735 Bollman Place # H Savage, Maryland 20763. VIRGINIA Office 11325 Random Hills Road Suite 360-A103 Fairfax, Virginia 22030. Call 866-999-3110 to Schedule your FREE Inspection and Estimate. Everyone at All Aspects Waterproofing looks forward to exceeding your expectations!

"I was very satisfied with All Aspects from my initial contact to the completion of the work. They were punctual, prodessional, proficient, thorough and it appears, my issue with the water is resolved."

Charlotte H on September 2023

"I was very satisfied with All Aspects from my initial contact to the completion of the work. They were punctual, prodessional, proficient, thorough and it appears, my issue with the water is resolved."

Charlotte H on September 2023

Brother's Waterproofing, LLC

Brother's Waterproofing, LLC