
Get matched with top basement waterproofing pros in Keymar, MD
There are 17 highly-rated local basement waterproofing pros.
Need a pro for your basement waterproofing project in Keymar, MD?
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Verified Reviews for Basement Waterproofing pros in Keymar, MD
*The Angi rating for Basement Waterproofing companies in Keymar, MD 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 Keymar, MD 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 October 04, 2025
Find Basement waterproofing pros in Keymar

Basement Waterproofing Nationwide Inc
Basement Waterproofing Nationwide Inc
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
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

Guardian Basement Waterproofing
Guardian Basement Waterproofing
Guardian Basement Waterproofing understands your basement waterproofing needs. We know how to detect the source of water intrusion and stop leaks before they happen. We help our customers reclaim their basements from water, mold and mildew by doing what we do best: finding and repairing the source of their water-related problems. Guardian uses only skilled and experienced technicians to do the job right the first time! As a basement waterproofing company with more than 40 years of waterproofing experience, Guardian stands behind its work with a Lifetime Guarantee. Additional phone number - (410) 484-9812.
"Avoid Guardian Basement – False Promises and Poor Customer Service Two years ago, I hired Guardian Basement to fix a water issue on the front wall of my basement. Joel came out, sold me on their system, and guaranteed I would have a dry basement. We also replaced two sump pumps and had the sump well dug deeper. The main selling point was their lifetime guarantee. Fast forward two years, and I have the exact same problem. Every time there is significant rain, water rushes through the same wall. I reached out to Guardian Basement, and Joel scheduled a time to check it out. His tone was completely different this time—defensive and dismissive. Within five minutes, he claimed, “Your system is clogged.” He made this assessment without any real inspection—just by looking at the cement floor and wall. Now, here’s the catch: If you look closely at their so-called lifetime warranty, clogs are not covered. So despite spending thousands of dollars, I’m back to square one. To make matters worse, Joel was incredibly condescending and unpleasant to deal with. After this experience, I looked into their licensing with the state of Maryland and found multiple complaints against them. I am now in the process of submitting my own complaint as well. I would never recommend Guardian Basement to anyone. Save your money and go with a company that truly knows what they are doing and stands behind their work. If I could give them a negative number of stars I would."
Kelly M on March 2025
Guardian Basement Waterproofing understands your basement waterproofing needs. We know how to detect the source of water intrusion and stop leaks before they happen. We help our customers reclaim their basements from water, mold and mildew by doing what we do best: finding and repairing the source of their water-related problems. Guardian uses only skilled and experienced technicians to do the job right the first time! As a basement waterproofing company with more than 40 years of waterproofing experience, Guardian stands behind its work with a Lifetime Guarantee. Additional phone number - (410) 484-9812.
"Avoid Guardian Basement – False Promises and Poor Customer Service Two years ago, I hired Guardian Basement to fix a water issue on the front wall of my basement. Joel came out, sold me on their system, and guaranteed I would have a dry basement. We also replaced two sump pumps and had the sump well dug deeper. The main selling point was their lifetime guarantee. Fast forward two years, and I have the exact same problem. Every time there is significant rain, water rushes through the same wall. I reached out to Guardian Basement, and Joel scheduled a time to check it out. His tone was completely different this time—defensive and dismissive. Within five minutes, he claimed, “Your system is clogged.” He made this assessment without any real inspection—just by looking at the cement floor and wall. Now, here’s the catch: If you look closely at their so-called lifetime warranty, clogs are not covered. So despite spending thousands of dollars, I’m back to square one. To make matters worse, Joel was incredibly condescending and unpleasant to deal with. After this experience, I looked into their licensing with the state of Maryland and found multiple complaints against them. I am now in the process of submitting my own complaint as well. I would never recommend Guardian Basement to anyone. Save your money and go with a company that truly knows what they are doing and stands behind their work. If I could give them a negative number of stars I would."
Kelly M on March 2025

JES Foundation Repair
JES Foundation Repair
Established in 1993, JES stands as a trusted subsidiary of Groundworks, a distinguished family of companies renowned for delivering unparalleled solutions. From foundation repair, structural reinforcement, crawl space encapsulation, basement waterproofing, and concrete lifting, we provide comprehensive services tailored to meet your needs. With our coverage spanning across the state of Virginia and Maryland, we bring our local expertise closer to you. JES proudly holds accreditation from the Better Business Bureau, a testament to our unwavering commitment to excellence. Drawing from decades of collective experience, extensive industry knowledge, and ongoing specialized training, our dedicated team is poised to safeguard your residential property against water damage, concrete sinking, and foundation instability. At JES, we are not just builders; we are guardians of your peace of mind. Contact us today for a FREE estimate! 410516000653 (DC) | 50637 (MD) | WV027473 (WV)
"They were recommended to me. Was honest with estimate. Told me everything that was going happen. Performed work in timely fashion. Would definitely recommend again"
Thomas S on August 2025
Established in 1993, JES stands as a trusted subsidiary of Groundworks, a distinguished family of companies renowned for delivering unparalleled solutions. From foundation repair, structural reinforcement, crawl space encapsulation, basement waterproofing, and concrete lifting, we provide comprehensive services tailored to meet your needs. With our coverage spanning across the state of Virginia and Maryland, we bring our local expertise closer to you. JES proudly holds accreditation from the Better Business Bureau, a testament to our unwavering commitment to excellence. Drawing from decades of collective experience, extensive industry knowledge, and ongoing specialized training, our dedicated team is poised to safeguard your residential property against water damage, concrete sinking, and foundation instability. At JES, we are not just builders; we are guardians of your peace of mind. Contact us today for a FREE estimate! 410516000653 (DC) | 50637 (MD) | WV027473 (WV)
"They were recommended to me. Was honest with estimate. Told me everything that was going happen. Performed work in timely fashion. Would definitely recommend again"
Thomas S on August 2025

Best Buy Waterproofing, LLC
Best Buy Waterproofing, LLC
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!
"Dan was highly professional and offered an excellent evaluation of my needs. He actually went into the crawl space to better understand my needs. A good neighbor and a person to know. Thank you."
Arsalan S on November 2024
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!
"Dan was highly professional and offered an excellent evaluation of my needs. He actually went into the crawl space to better understand my needs. A good neighbor and a person to know. Thank you."
Arsalan S on November 2024

Always Waterproofing
Always Waterproofing
Always Waterproofing has 35 years of experience in the industry. We are locally owned and operated. If you want the job right the first time, call James today!
"They have two owners. The first one handled the business aspect, the 2nd owner handled the communication aspect and he handled it perfectly. Overall the team work of the company was excellent. The patio which they did turned out wonderful and we have envious neighbors who want to use the same company. "
Jackie C on September 2025
Always Waterproofing has 35 years of experience in the industry. We are locally owned and operated. If you want the job right the first time, call James today!
"They have two owners. The first one handled the business aspect, the 2nd owner handled the communication aspect and he handled it perfectly. Overall the team work of the company was excellent. The patio which they did turned out wonderful and we have envious neighbors who want to use the same company. "
Jackie C on September 2025

'58 Foundations
'58 Foundations
For over 66 years, '58 Foundations & Waterproofing has provided the highest-quality basement waterproofing, crawl space encapsulation, foundation repair, and mold removal. We lead with a promise of Trusted Five-Star Service, which means the customer experience is at the center of everything we do. Since 1958, we have been steadfast in keeping this promise and upholding the values upon which '58 Foundations & Waterproofing was built: trust, teamwork, integrity, respect, and communication. From the initial call to job completion, our customers are met with knowledgeable, caring, and professional staff prepared to offer a five-star experience that is unmatched in the home repair industry. What’s more, you can enjoy the peace of mind that comes with our lifetime warranty and our industry-unique money-back guarantee!
"If you’re considering 58 Foundations, do yourself a favor and stop right now. I cannot, in good conscience, recommend this company to anyone. Their complete disregard for accountability is infuriating. At first, things appeared to go smoothly, but the illusion of competence quickly disintegrated when it came time for the building inspection. The city inspector requires a letter from the project engineer verifying that the work is safe, sound, and compliant with code. 58 Foundations flat-out refuses to provide this basic validation of their work. Why won’t they stand behind their project? Are they hiding shoddy, substandard work? As a homeowner, I’m now saddled with the mess of an open permit and no resolution in sight. This is unacceptable. If a company won’t back their work with a simple letter, what does that say about their integrity—or lack thereof? Didn't expect this kind of run around from a well established professional firm, save yourself the headache."
Warrick S on December 2024
For over 66 years, '58 Foundations & Waterproofing has provided the highest-quality basement waterproofing, crawl space encapsulation, foundation repair, and mold removal. We lead with a promise of Trusted Five-Star Service, which means the customer experience is at the center of everything we do. Since 1958, we have been steadfast in keeping this promise and upholding the values upon which '58 Foundations & Waterproofing was built: trust, teamwork, integrity, respect, and communication. From the initial call to job completion, our customers are met with knowledgeable, caring, and professional staff prepared to offer a five-star experience that is unmatched in the home repair industry. What’s more, you can enjoy the peace of mind that comes with our lifetime warranty and our industry-unique money-back guarantee!
"If you’re considering 58 Foundations, do yourself a favor and stop right now. I cannot, in good conscience, recommend this company to anyone. Their complete disregard for accountability is infuriating. At first, things appeared to go smoothly, but the illusion of competence quickly disintegrated when it came time for the building inspection. The city inspector requires a letter from the project engineer verifying that the work is safe, sound, and compliant with code. 58 Foundations flat-out refuses to provide this basic validation of their work. Why won’t they stand behind their project? Are they hiding shoddy, substandard work? As a homeowner, I’m now saddled with the mess of an open permit and no resolution in sight. This is unacceptable. If a company won’t back their work with a simple letter, what does that say about their integrity—or lack thereof? Didn't expect this kind of run around from a well established professional firm, save yourself the headache."
Warrick S on December 2024

MD Waterproofing & Radon Reduction, Inc.
MD Waterproofing & Radon Reduction, Inc.
We proudly present to you MD Waterproofing & Radon Reduction, Inc. We have experience providing basement waterproof systems and foundation waterproofing solutions for homeowners, realtors and commercial property management teams for over 20 years. Our team of experts at MD Waterproofing have never encountered a wet basement or crawl space condition that wasn't capable of being solved. We're committed to providing quality workmanship and we work hard to give you affordable solutions. Call us today!
"Very satisfied with work done Angie too pricey for me."
Patricia P on July 2024
We proudly present to you MD Waterproofing & Radon Reduction, Inc. We have experience providing basement waterproof systems and foundation waterproofing solutions for homeowners, realtors and commercial property management teams for over 20 years. Our team of experts at MD Waterproofing have never encountered a wet basement or crawl space condition that wasn't capable of being solved. We're committed to providing quality workmanship and we work hard to give you affordable solutions. Call us today!
"Very satisfied with work done Angie too pricey for me."
Patricia P on July 2024

Fortress Foundation Solutions
Fortress Foundation Solutions
At Fortress Foundation Solutions, we are here to take the industry by storm, offering elite interior basement waterproofing, mold remediation, crawl space repair, and foundation repair services to Central Virginia homeowners in Virginia. As a company, we are committed to improving the home improvement industry and creating a ripple effect that can change businesses, our community's lives and, the world for the better. Our website has an extensive collection of photo albums of our work, as well as information on the product and services we offer. We are happy to come out and take a look at your home. We offer free, no obligate estimates - and, our System Designers will give you a proposal that same day. WE BELIEVE MORE IS POSSIBLE! Give us a call today! (434) 299-9393
"Got the job done as promised."
Michael F on November 2024
At Fortress Foundation Solutions, we are here to take the industry by storm, offering elite interior basement waterproofing, mold remediation, crawl space repair, and foundation repair services to Central Virginia homeowners in Virginia. As a company, we are committed to improving the home improvement industry and creating a ripple effect that can change businesses, our community's lives and, the world for the better. Our website has an extensive collection of photo albums of our work, as well as information on the product and services we offer. We are happy to come out and take a look at your home. We offer free, no obligate estimates - and, our System Designers will give you a proposal that same day. WE BELIEVE MORE IS POSSIBLE! Give us a call today! (434) 299-9393
"Got the job done as promised."
Michael F on November 2024

Green Home Solutions
Green Home Solutions
With our EPA-registered, plant-based products, Green Home Solutions is the trusted partner to address a range of indoor air quality needs: mold remediation, odor removal, allergen control, disinfection/sanitization, and air filtration. Our inspections detect indoor air quality issues, determine potential underlying causes, and help us create a customized and effective treatment plan that features our EPA-registered, plant-based products and IICRC protocols. We’re fast, affordable, and effective at eliminating mold, preventing regrowth, removing odors, and making air better. We uphold a standard of integrity with fairness, honesty, and personal responsibility. Accurate knowledge combined with a drive to serve our customers' interests and needs: these qualities make us true professionals you can rely on.
"Quick and painless."
Robert G on March 2025
With our EPA-registered, plant-based products, Green Home Solutions is the trusted partner to address a range of indoor air quality needs: mold remediation, odor removal, allergen control, disinfection/sanitization, and air filtration. Our inspections detect indoor air quality issues, determine potential underlying causes, and help us create a customized and effective treatment plan that features our EPA-registered, plant-based products and IICRC protocols. We’re fast, affordable, and effective at eliminating mold, preventing regrowth, removing odors, and making air better. We uphold a standard of integrity with fairness, honesty, and personal responsibility. Accurate knowledge combined with a drive to serve our customers' interests and needs: these qualities make us true professionals you can rely on.
"Quick and painless."
Robert G on March 2025

Best Buy Waterproofing, LLC
Best Buy Waterproofing, LLC
(COVID - 19) Update: With the corona virus rapidly impacting the way we work & live, Best Buy remains open for business 24/7/365, and here to take care of your Waterproofing and moisture control needs. Health and Safety is our highest priority! Therefore, we are following protocols set by the state and local government agencies to help prevent the spread of the virus! We have taken the appropriate steps to keep our office, shop, vehicles, equipment, and most importantly, keep our TEAM and CUSTOMERS SAFE in these uncertain times! In addition, we will be offering a 20% off all of our services while we continue to serve you during this difficult time! Thank you for your loyalty and dedication to Best Buy Waterproofing! Customer satisfaction is our #1 priority and you can see by our reviews which are the Best in the industry, we are passionate in what we do, and more importantly, Best Buy will keep you dry!
"Great communication!"
DAVID A on October 2024
(COVID - 19) Update: With the corona virus rapidly impacting the way we work & live, Best Buy remains open for business 24/7/365, and here to take care of your Waterproofing and moisture control needs. Health and Safety is our highest priority! Therefore, we are following protocols set by the state and local government agencies to help prevent the spread of the virus! We have taken the appropriate steps to keep our office, shop, vehicles, equipment, and most importantly, keep our TEAM and CUSTOMERS SAFE in these uncertain times! In addition, we will be offering a 20% off all of our services while we continue to serve you during this difficult time! Thank you for your loyalty and dedication to Best Buy Waterproofing! Customer satisfaction is our #1 priority and you can see by our reviews which are the Best in the industry, we are passionate in what we do, and more importantly, Best Buy will keep you dry!
"Great communication!"
DAVID A on October 2024
The Keymar, MD homeowners’ guide to basement waterproofing services
From average costs to expert advice, get all the answers you need to get your job done.
Sump pump battery backup costs depend on the type and the design of the system purchased. Follow this guide to learn how to budget for your backup battery.
Need to fix basement water problems or safeguard your home from damage in the future? Use this basement waterproofing cost guide to budget appropriately.
A variety of factors can affect your total crawl space encapsulation cost. Here’s a breakdown of the cost of this project, whether you hire a pro or DIY.
Crawl space maintenance is a necessary part of keeping your home protected and energy-efficient. Follow these tips to properly maintain your crawl space.
Crawl space inspections should be as commonplace as roof and chimney checkups. Here's who to hire to inspect your crawl space.
Don't let the rain get you down. Learn about the most popular sump pump backup options to keep your basement from flooding, even when the power goes out.
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