Get matched with top basement waterproofing pros in Philadelphia, PA
There are 38 highly-rated local basement waterproofing pros.
TRUSTED BY PHILADELPHIA, PA HOMEOWNERS
4.9 
23 Verified Reviews for Basement Waterproofing pros in Philadelphia, PA
*The Angi rating for Basement Waterproofing companies in Philadelphia, PA 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 Philadelphia, PA 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 July 05, 2025
Basement waterproofing pros in Philadelphia
Our mission at J & A Environmental Services, LLC is to continue the growth of our business by doing right by all of our clients. We truly care about your health and environment, so we take our jobs very seriously. We offer Mold Remediation, Air Quality Testing, Basement Waterproofing, Odor Removal, and Water Damage Clean-up. J&A Environmental Services, LLC is a fair honest company with excellent customer service. J&A Environmental Services, LLC built the brand by helping one family at a time to eliminate the mold in their environment. Call us 24/7 for all your Environmental needs. We have 100+ five star ratings on Angi's Leads and 34 five star ratings on Angi's Ads.
"Al and John were great - very informative and thorough, very neat. They needed to move a bunch of shelves in my basement so they can treat the walls and let them dry. They came back a few days later and put everything back. They also set up my new dehumidifier and explained how to operate it."
gene K on March 2025
Our mission at J & A Environmental Services, LLC is to continue the growth of our business by doing right by all of our clients. We truly care about your health and environment, so we take our jobs very seriously. We offer Mold Remediation, Air Quality Testing, Basement Waterproofing, Odor Removal, and Water Damage Clean-up. J&A Environmental Services, LLC is a fair honest company with excellent customer service. J&A Environmental Services, LLC built the brand by helping one family at a time to eliminate the mold in their environment. Call us 24/7 for all your Environmental needs. We have 100+ five star ratings on Angi's Leads and 34 five star ratings on Angi's Ads.
"Al and John were great - very informative and thorough, very neat. They needed to move a bunch of shelves in my basement so they can treat the walls and let them dry. They came back a few days later and put everything back. They also set up my new dehumidifier and explained how to operate it."
gene K on March 2025
Family owned. Over thirty years in business. Free estimates, all work guaranteed. Waterproofing One, now proudly serving central and south New Jersey, provides basement waterproofing, foundation repair, and mold remediation to the Greater Philadelphia, PA, area, including Montgomery, Chester and Delaware counties. If you are concerned about maintaining the value of your property, then saving your foundation from the results of water damage is a must. Basement leaks can lead to a cracked foundation and the growth of unhealthy mold. Not only do we guarantee to have low prices, but all of our work is warranted. We are licensed, insured and certified for your protection, and accredited by the BBB. Call Waterproofing One today to schedule your free estimate! We are currently licensed for the Delaware and New Jersey area, please see below licensing information. Delaware Licensing Number- 17-92051-13-000 New Jersey Licensing Number-13vh09291700
"From the first contact they were very responsive, friendly, and professional. They came right in on the estimate price and got the job done quickly with top quality work. I will definitely hire them again in the future."
Michael M on March 2021
Family owned. Over thirty years in business. Free estimates, all work guaranteed. Waterproofing One, now proudly serving central and south New Jersey, provides basement waterproofing, foundation repair, and mold remediation to the Greater Philadelphia, PA, area, including Montgomery, Chester and Delaware counties. If you are concerned about maintaining the value of your property, then saving your foundation from the results of water damage is a must. Basement leaks can lead to a cracked foundation and the growth of unhealthy mold. Not only do we guarantee to have low prices, but all of our work is warranted. We are licensed, insured and certified for your protection, and accredited by the BBB. Call Waterproofing One today to schedule your free estimate! We are currently licensed for the Delaware and New Jersey area, please see below licensing information. Delaware Licensing Number- 17-92051-13-000 New Jersey Licensing Number-13vh09291700
"From the first contact they were very responsive, friendly, and professional. They came right in on the estimate price and got the job done quickly with top quality work. I will definitely hire them again in the future."
Michael M on March 2021
We are a family run waterproofing specialist company, owned and operated, since 1976 by A.J. DiElsi. We have one crew, one truck and start and finish one job at a time. We are completely insured with general liability and workman's compensation. There is no charge for estimates and we take no deposits on any job. You pay us upon completion of the job. We do not have salesmen. A.J. is the gentleman that comes out to deliver each estimate and he is on each job. We excel in impeccable workmanship, and the jobs are always left cleaner than when we arrived. We give a lifetime guarantee on our French Drains and it is transferable to each new homeowner. Please feel free to call with any questions 610-527-9444 or 610-409-0888, Additional phones: 610-960-1589. Or feel free to email us at : [email protected], you can also check us out on YouTube and our website, ajwaterproofing.com.
"QUICK, FRIENDLY, and CHEAP!! First, AJ called me within 30 seconds of me texting him asking for an estimate. I sent him a photo of our water leak issue and he immediately responded. He actually explained that we could probably handle the repair ourselves if we were up for it, instead of paying him or someone else. He then walked us through every step in detail and made sure we were comfortable with the directions. So in the end, it cost us $0 in labor and only a small amount for materials, and really demonstrated AJ's integrity and generosity!"
Jarcy M on September 2023
We are a family run waterproofing specialist company, owned and operated, since 1976 by A.J. DiElsi. We have one crew, one truck and start and finish one job at a time. We are completely insured with general liability and workman's compensation. There is no charge for estimates and we take no deposits on any job. You pay us upon completion of the job. We do not have salesmen. A.J. is the gentleman that comes out to deliver each estimate and he is on each job. We excel in impeccable workmanship, and the jobs are always left cleaner than when we arrived. We give a lifetime guarantee on our French Drains and it is transferable to each new homeowner. Please feel free to call with any questions 610-527-9444 or 610-409-0888, Additional phones: 610-960-1589. Or feel free to email us at : [email protected], you can also check us out on YouTube and our website, ajwaterproofing.com.
"QUICK, FRIENDLY, and CHEAP!! First, AJ called me within 30 seconds of me texting him asking for an estimate. I sent him a photo of our water leak issue and he immediately responded. He actually explained that we could probably handle the repair ourselves if we were up for it, instead of paying him or someone else. He then walked us through every step in detail and made sure we were comfortable with the directions. So in the end, it cost us $0 in labor and only a small amount for materials, and really demonstrated AJ's integrity and generosity!"
Jarcy M on September 2023
We guarantee your satisfaction, and we won’t leave until the job is done right. We pride ourselves on the quality work we provide, while delivering great customer service! Check out all the services we offer below and call -or- click to schedule an estimate today!
"Working with Just Dry Basements was best described as no-nonsense, fast, and high-quality. In a highly-charged emotional situation like a basement flooding - it is easy to just pick someone to do the work out of desperation. I was lucky enough to work with JDB, who not only rapidly assessed, made a plan together on how we would approach the job, and accommodated a difficult situation where the basement was mostly finished, and they had to carefully deconstruct some of the walls to put in the proper mitigation. A year plus later and a LOT of rain past, the work truly stands the test of time and whatever the elements can throw at it. I have since worked with JDB on other projects, and not just because of the quality of work, but also their fair pricing, friendly and predictable communication, as well as standing behind their work 100%."
Sam G on August 2023
We guarantee your satisfaction, and we won’t leave until the job is done right. We pride ourselves on the quality work we provide, while delivering great customer service! Check out all the services we offer below and call -or- click to schedule an estimate today!
"Working with Just Dry Basements was best described as no-nonsense, fast, and high-quality. In a highly-charged emotional situation like a basement flooding - it is easy to just pick someone to do the work out of desperation. I was lucky enough to work with JDB, who not only rapidly assessed, made a plan together on how we would approach the job, and accommodated a difficult situation where the basement was mostly finished, and they had to carefully deconstruct some of the walls to put in the proper mitigation. A year plus later and a LOT of rain past, the work truly stands the test of time and whatever the elements can throw at it. I have since worked with JDB on other projects, and not just because of the quality of work, but also their fair pricing, friendly and predictable communication, as well as standing behind their work 100%."
Sam G on August 2023
Ross, Master Plumber, and has been servicing the Southeastern Pennsylvania area for a combined 60+ years. With extensive knowledge in both Residential and Commercial plumbing, we are sure to have the right solution for all of your needs. If you’re looking for a company who sets itself apart from the rest, one that truly stands behind its word, you’ll want to contact Paradigm Plumbing Solutions. Unlike most companies, you will have the Owners, onsite, working alongside of our Foreman from start to finish. This will give you peace of mind, knowing the job will be done to the highest standards. Our existing plumbing Customers will never have to pay an emergency service fee. In addition, we will always extend additional discounts when our existing customers continue to use Paradigm Plumbing Solutions for additional work. Owned and operated by Master Plumber, Ross Pressman, Paradigm Plumbing Solutions is a family-run venture that has deep roots in the community. Join our family of totally satisfied customers and let us show you what were made of.
"Don’t hesitate - make the call; we’re so glad we did! I will definitely call Paradigm Plumbing for our future projects! It was such a pleasure to work with Ross and his crew. They respond quickly and their work is top quality."
Mark B on October 2024
Ross, Master Plumber, and has been servicing the Southeastern Pennsylvania area for a combined 60+ years. With extensive knowledge in both Residential and Commercial plumbing, we are sure to have the right solution for all of your needs. If you’re looking for a company who sets itself apart from the rest, one that truly stands behind its word, you’ll want to contact Paradigm Plumbing Solutions. Unlike most companies, you will have the Owners, onsite, working alongside of our Foreman from start to finish. This will give you peace of mind, knowing the job will be done to the highest standards. Our existing plumbing Customers will never have to pay an emergency service fee. In addition, we will always extend additional discounts when our existing customers continue to use Paradigm Plumbing Solutions for additional work. Owned and operated by Master Plumber, Ross Pressman, Paradigm Plumbing Solutions is a family-run venture that has deep roots in the community. Join our family of totally satisfied customers and let us show you what were made of.
"Don’t hesitate - make the call; we’re so glad we did! I will definitely call Paradigm Plumbing for our future projects! It was such a pleasure to work with Ross and his crew. They respond quickly and their work is top quality."
Mark B on October 2024
Aqua Dry specializes in Basement & Crawlspace Waterproofing Science and we are Foundation Repair Experts: We invite you to take advantage of our one time free estimate / inspection offer and the most competitive financing options. We realize damp, wet, smelly basements can be very frustrating. That's why we offer a 21 point inspection to determine the cause of the water intrusion and mold growth. Aqua Dry has achieved the highest accolades for their proactive technology, hands on craftsmanship and superior mold remediation practices. Go from Wet to dry in 2 days or less. Our motto is to affordably solve your water intrusion concerns, in addition too, designing the best defense to combat against all Microbial growth and Mycotoxins. Finally, there is "One Local Waterproofing Expert" who cares about your home and your families health. As we continue to provide the most effective methods in achieving a healthy proactive Basement environment - Call Now 215-432-7122
"We have a large basement. We had water seeping out from the cinder block walls, and had a lot of mold on the walls. Aqua Dry completely solved these issues for us in about a day and a half. Their work crews were very professional, and respectful of our property, cleaning up after themselves thoroughly. They wrapped our possessions in the basement to minimize dust accumulating on them. Our basement is now bone dry, with zero mold present. I would highly recommend Aqua Dry Basement Waterproofing!"
Bill R on August 2023
Aqua Dry specializes in Basement & Crawlspace Waterproofing Science and we are Foundation Repair Experts: We invite you to take advantage of our one time free estimate / inspection offer and the most competitive financing options. We realize damp, wet, smelly basements can be very frustrating. That's why we offer a 21 point inspection to determine the cause of the water intrusion and mold growth. Aqua Dry has achieved the highest accolades for their proactive technology, hands on craftsmanship and superior mold remediation practices. Go from Wet to dry in 2 days or less. Our motto is to affordably solve your water intrusion concerns, in addition too, designing the best defense to combat against all Microbial growth and Mycotoxins. Finally, there is "One Local Waterproofing Expert" who cares about your home and your families health. As we continue to provide the most effective methods in achieving a healthy proactive Basement environment - Call Now 215-432-7122
"We have a large basement. We had water seeping out from the cinder block walls, and had a lot of mold on the walls. Aqua Dry completely solved these issues for us in about a day and a half. Their work crews were very professional, and respectful of our property, cleaning up after themselves thoroughly. They wrapped our possessions in the basement to minimize dust accumulating on them. Our basement is now bone dry, with zero mold present. I would highly recommend Aqua Dry Basement Waterproofing!"
Bill R on August 2023
Established in 1997, Groundworks is 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 Philadelphia & New Jersey, we bring our local expertise closer to you. Groundworks 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 Groundworks, we are not just builders; we are guardians of your peace of mind. Contact us today for a FREE estimate!
"Tyrell did an excellent job correcting the mistakeS of the people who installed my basement waterproofing equipment. There was a terrible rotten egg smell and that's gone now. Tyrell cleaned up after himself, if any water spilled he made sure to vacuum it up and to dispose of everything in the proper place."
Alexander M on September 2023
Established in 1997, Groundworks is 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 Philadelphia & New Jersey, we bring our local expertise closer to you. Groundworks 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 Groundworks, we are not just builders; we are guardians of your peace of mind. Contact us today for a FREE estimate!
"Tyrell did an excellent job correcting the mistakeS of the people who installed my basement waterproofing equipment. There was a terrible rotten egg smell and that's gone now. Tyrell cleaned up after himself, if any water spilled he made sure to vacuum it up and to dispose of everything in the proper place."
Alexander M on September 2023
Quality 1st Basement Systems has been helping homeowners improve their homes for over 20 years. We have currently helped over 6,000 homeowners with All Things Basementy by designing effective solutions for their home’s needs. Whether our homeowners are interested in waterproofing a wet basement, fixing cracked foundation walls, insulating their crawl spaces, finishing their basements with mold-resistant materials, and raising concrete slabs, we can help! We’re currently the largest waterproofing company serving both residential and commercial clients in the tri-state area and are continuing to grow. As a member of the internationally renowned Basement Systems, Inc. network and Foundation Supportworks, Inc. network, we have global resources, but provide local service! The Basement Systems network thoroughly trains our employees at the Basement Systems, Inc. corporate headquarters in CT. Our hard work and dedication to our customers have earned us an A+ rating with the Better Business Bureau and several Super Service Awards from Angie’s List. We service most of New Jersey, all 5 boroughs of New York City and certain parts of Pennsylvania. Thousands of homeowners have experienced the Quality 1st Basement Systems difference. We invite you to do your homework and check out our credentials and compare. Put our experience and integrity to work protecting your investment. Our reputation exceeds all others because of our culture of WOW customer service.
"Everything went smoothly"
Hector R on December 2023
Quality 1st Basement Systems has been helping homeowners improve their homes for over 20 years. We have currently helped over 6,000 homeowners with All Things Basementy by designing effective solutions for their home’s needs. Whether our homeowners are interested in waterproofing a wet basement, fixing cracked foundation walls, insulating their crawl spaces, finishing their basements with mold-resistant materials, and raising concrete slabs, we can help! We’re currently the largest waterproofing company serving both residential and commercial clients in the tri-state area and are continuing to grow. As a member of the internationally renowned Basement Systems, Inc. network and Foundation Supportworks, Inc. network, we have global resources, but provide local service! The Basement Systems network thoroughly trains our employees at the Basement Systems, Inc. corporate headquarters in CT. Our hard work and dedication to our customers have earned us an A+ rating with the Better Business Bureau and several Super Service Awards from Angie’s List. We service most of New Jersey, all 5 boroughs of New York City and certain parts of Pennsylvania. Thousands of homeowners have experienced the Quality 1st Basement Systems difference. We invite you to do your homework and check out our credentials and compare. Put our experience and integrity to work protecting your investment. Our reputation exceeds all others because of our culture of WOW customer service.
"Everything went smoothly"
Hector R on December 2023
We are a locally owned and operated basement waterproofing company with over 25 years experience. With over 10 years of servicing the tri-state area, we have many satisfied customers. In addition to our quality workmanship, our warranty is among the best in the industry! Call now for your FREE, no obligation, in home estimate.
"Great! Not going to lie, they are expensive. But they were quick, professional, and efficient. Completed the repairs and clean-up immaculately. Great job!"
Edward B on May 2023
We are a locally owned and operated basement waterproofing company with over 25 years experience. With over 10 years of servicing the tri-state area, we have many satisfied customers. In addition to our quality workmanship, our warranty is among the best in the industry! Call now for your FREE, no obligation, in home estimate.
"Great! Not going to lie, they are expensive. But they were quick, professional, and efficient. Completed the repairs and clean-up immaculately. Great job!"
Edward B on May 2023
Established in 2004, Groundworks is 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 New Jersey, we bring our local expertise closer to you. Groundworks 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 Groundworks, we are not just builders; we are guardians of your peace of mind. Contact us today for a FREE estimate!
"Working with DJ from Groundworks (Select Basement) has been an outstanding experience. After struggling with various contractors who either failed to resolve our water issues or were unprofessional, DJ and his team truly stood out. DJ was incredibly helpful, patient, and responsive throughout the entire process. Our home is a ranch with 225 linear feet around the perimeter, and while other contractors insisted on installing a French drain for the entire length, DJ recommended a more targeted approach. He proposed installing the French drain for just 80 linear feet, focusing only on the areas where water intrusion was likely. His thorough explanations and prompt responses to all our questions were greatly appreciated. The workers arrived on time, maintained a clean work environment, and completed the job as promised. If we could give 10 stars, we would! Groundworks is a highly professional and honest company that didn't try to inflate the scope of work to charge us more. We wholeheartedly recommend them."
Elina B on October 2024
Established in 2004, Groundworks is 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 New Jersey, we bring our local expertise closer to you. Groundworks 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 Groundworks, we are not just builders; we are guardians of your peace of mind. Contact us today for a FREE estimate!
"Working with DJ from Groundworks (Select Basement) has been an outstanding experience. After struggling with various contractors who either failed to resolve our water issues or were unprofessional, DJ and his team truly stood out. DJ was incredibly helpful, patient, and responsive throughout the entire process. Our home is a ranch with 225 linear feet around the perimeter, and while other contractors insisted on installing a French drain for the entire length, DJ recommended a more targeted approach. He proposed installing the French drain for just 80 linear feet, focusing only on the areas where water intrusion was likely. His thorough explanations and prompt responses to all our questions were greatly appreciated. The workers arrived on time, maintained a clean work environment, and completed the job as promised. If we could give 10 stars, we would! Groundworks is a highly professional and honest company that didn't try to inflate the scope of work to charge us more. We wholeheartedly recommend them."
Elina B on October 2024
FAQs for basement waterproofing projects in Philadelphia, PA
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
You can DIY basement waterproofing in some ways to help save on the overall costs. If your basement isn’t experiencing a lot of water but is noticeably humid, you can try running a dehumidifier that will pull the excess water out of the air. If you notice water leaking due to outdoor drainage issues, you can add downspout extensions to keep rainwater away from your home.
However, if the problem is more severe and requires a more extensive solution, it’s best to call a basement waterproofing professional to assess the treatment you need and install waterproofing safeguards properly. Since keeping water out of your basement is important, ensuring this job is done correctly the first time is best.
Damp proofing and waterproofing are both methods to help keep your basement dry. Damp proofing keeps soil moisture from entering your basement, which is helpful since your basement is underground. Waterproofing, however, keeps both soil moisture and liquid water out of the basement, which is essential, especially if you live in a wet environment. Because it’s more protective, waterproofing typically costs more than damp proofing.
Several factors dictate if you should waterproof the interior or exterior of your basement. Waterproofing the exterior of your home is a great option if you use your basement for storage, as it provides the most protection from water and water damage. If you prefer work done outside of your home versus inside, exterior waterproofing is best for you. However, interior waterproofing is often less expensive since the area is easier to reach and requires less labor.
The cost of basement waterproofing is $4,950 for the average homeowner. However, you could end up paying between $600 and $14,000, depending on factors like basement size, waterproofing method, and the region you live in.
If you live in an area with heavy rainfall, you might be paying more for waterproofing than if you lived somewhere drier since waterproofing contractors would be in high demand. Likewise, a 500-foot basement costs between $2,500 and $5,000 to waterproof, but that price rises significantly for a larger basement.
Get our Angi-powered app
