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  • Average homeowner rating star icon4.9
    Average homeowner rating
  • Verified reviews icon27
    Verified basement waterproofing services reviews

Find Basement waterproofing pros in Philadelphia

Avatar for AJ Waterproofing

AJ Waterproofing

4.98(
172
)
Approved Pro

AJ Waterproofing

4.98(
172
)
Approved Pro
Customers say: Quality work
Recommended by 98% of Angi customers
Recommended by 98% of HomeAdvisor customers
49 years of experience

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.

"Great job, very professional"

Jerry D on February 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.

"Great job, very professional"

Jerry D on February 2021


Avatar for Basement Gurus, LLC

Basement Gurus, LLC

4.84(
151
)
Approved Pro

Basement Gurus, LLC

4.84(
151
)
Approved Pro
Customers say: Quality work
15 years of experience
Free onsite estimate

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!

"I was getting water in my basement every time it rained, Dan helped me rule out other causes and recommended a french drain. Basement has been bone dry ever since. The workers took great care and even repaired the water damage from before. I highly recommend calling Basement Gurus for any basement related needs"

Andrew R on December 2025

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!

"I was getting water in my basement every time it rained, Dan helped me rule out other causes and recommended a french drain. Basement has been bone dry ever since. The workers took great care and even repaired the water damage from before. I highly recommend calling Basement Gurus for any basement related needs"

Andrew R on December 2025


Avatar for Aqua Dry Basement Waterproofing

Aqua Dry Basement Waterproofing

4.90(
42
)
Approved Pro

Aqua Dry Basement Waterproofing

4.90(
42
)
Approved Pro
Customers say: Super punctual
Recommended by 97% of Angi customers
Recommended by 97% of HomeAdvisor customers
33 years of experience

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


Avatar for J & A Environmental Services

J & A Environmental Services

5.00(
41
)
Approved Pro

J & A Environmental Services

5.00(
41
)
Approved Pro
Customers say: Quick response
Recommended by 97% of Angi customers
Recommended by 97% of HomeAdvisor customers
6 years of experience

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.

"Prompt and effective remediation. Total restoration of the ceiling including wallboard and paint. Site was cleaned throughly."

Chuck B on December 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.

"Prompt and effective remediation. Total restoration of the ceiling including wallboard and paint. Site was cleaned throughly."

Chuck B on December 2025


Avatar for Quality 1st Basement Systems, Inc.

Quality 1st Basement Systems, Inc.

4.87(
90
)
Approved Pro

Quality 1st Basement Systems, Inc.

4.87(
90
)
Approved Pro
Customers say: Quick response
26 years of experience
Free onsite estimate

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

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


Avatar for Aqua Dry

Aqua Dry

4.88(
58
)
Approved Pro

Aqua Dry

4.88(
58
)
Approved Pro
Customers say: Super punctual
Recommended by 98% of Angi customers
Recommended by 98% of HomeAdvisor customers
30 years of experience

Aqua Dry specializes in Basement and Crawlspace Waterproofing Science and are Foundation Repair Experts: 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 its proactive technology, hands-on craftsmanship, and superior mold solution practices. Go from Wet to dry in 2 days or less. Our motto is to affordably solve your water intrusion concerns, in addition to, 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 family's health. As we continue to provide the most effective methods for achieving a healthy proactive Basement environment - we invite you to take advantage of our one time free estimate / inspection offer and the most competitive financing options.

"Aqua-Dry is best for basement waterproofing and sump installations."

Mayur D on June 2024

Aqua Dry specializes in Basement and Crawlspace Waterproofing Science and are Foundation Repair Experts: 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 its proactive technology, hands-on craftsmanship, and superior mold solution practices. Go from Wet to dry in 2 days or less. Our motto is to affordably solve your water intrusion concerns, in addition to, 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 family's health. As we continue to provide the most effective methods for achieving a healthy proactive Basement environment - we invite you to take advantage of our one time free estimate / inspection offer and the most competitive financing options.

"Aqua-Dry is best for basement waterproofing and sump installations."

Mayur D on June 2024


Avatar for Waterproofing One

Waterproofing One

4.82(
132
)
Approved Pro

Waterproofing One

4.82(
132
)
Approved Pro
Customers say: Quality work
Recommended by 93% of Angi customers
Recommended by 93% of HomeAdvisor customers
26 years of experience

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


Avatar for Dry-At-Last-Waterproofing

Dry-At-Last-Waterproofing

5.00(
74
)
Approved Pro

Dry-At-Last-Waterproofing

5.00(
74
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
39 years of experience

For two generations now, Dry-At-Last Waterproofing & Foundation Repair has offered a complete and comprehensive inspection of the interior and exterior of your property - entirely free of charge! With over 30 years of experience and as pioneers of the industry, each job is custom designed to resolve any of your basement and foundation issues. We pride ourselves on hard work and old-fashioned values. Our simple and affordable solutions are the very best for you and your family to rely on. No matter what the concern let us welcome you to our large and neighboring family of satisfied customers and provide you peace of mind. AS ALWAYS SPECIAL DISCOUNTS FOR SENIORS, VETERANS, MILITARY PERSONAL, FIRST RESPONDERS & OF COURSE OUR WONDERFUL TEACHERS OUT THERE!

"From the beginning of the job to the end, I was very happy with Dry-At-Last. Out of the four companies that came for the inspection of the crawlspace, Steve (the owner) was the only one who found an issue with the wall in the basement. The drainage system was extended, and now everything is bone dry. The workers were polite, hard working, and respectful."

Terry B on March 2023

For two generations now, Dry-At-Last Waterproofing & Foundation Repair has offered a complete and comprehensive inspection of the interior and exterior of your property - entirely free of charge! With over 30 years of experience and as pioneers of the industry, each job is custom designed to resolve any of your basement and foundation issues. We pride ourselves on hard work and old-fashioned values. Our simple and affordable solutions are the very best for you and your family to rely on. No matter what the concern let us welcome you to our large and neighboring family of satisfied customers and provide you peace of mind. AS ALWAYS SPECIAL DISCOUNTS FOR SENIORS, VETERANS, MILITARY PERSONAL, FIRST RESPONDERS & OF COURSE OUR WONDERFUL TEACHERS OUT THERE!

"From the beginning of the job to the end, I was very happy with Dry-At-Last. Out of the four companies that came for the inspection of the crawlspace, Steve (the owner) was the only one who found an issue with the wall in the basement. The drainage system was extended, and now everything is bone dry. The workers were polite, hard working, and respectful."

Terry B on March 2023


Avatar for Groundworks

Groundworks

4.78(
179
)
Approved Pro

Groundworks

4.78(
179
)
Approved Pro
Customers say: Quick response
Recommended by 92% of Angi customers
Recommended by 92% of HomeAdvisor customers
21 years of experience

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! 13VH11822900 (NJ)

"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! 13VH11822900 (NJ)

"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


Avatar for Groundworks

Groundworks

4.69(
257
)
Approved Pro

Groundworks

4.69(
257
)
Approved Pro
Customers say: Super punctual
Recommended by 91% of Angi customers
Recommended by 91% of HomeAdvisor customers
28 years of experience

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! PA158514 (PA)

"I got my basement waterproofed in January 2023 paid $16K for it & I had to call them twice already because still getting water in the basement not only that but this machine has been beeping consistently every 2-3 seconds because it needs service I called them to come out to resolve the matter but have to wait a whole month for someone to come out! For me to pay $16K to get horrible service & still go through the water issue is not good at all!!!"

SAKINA T 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! PA158514 (PA)

"I got my basement waterproofed in January 2023 paid $16K for it & I had to call them twice already because still getting water in the basement not only that but this machine has been beeping consistently every 2-3 seconds because it needs service I called them to come out to resolve the matter but have to wait a whole month for someone to come out! For me to pay $16K to get horrible service & still go through the water issue is not good at all!!!"

SAKINA T on August 2023

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Showing 1-10 of 455
Basement Waterproofing questions, answered by experts

Basement waterproofing in Philadelphia offers immediate benefits like reducing moisture, preventing mold, and improving indoor air quality. Over the long term, it protects your home’s foundation, helps maintain property value, and enhances energy efficiency by controlling humidity. A dry basement also creates more usable living space and can make your property more appealing in Philadelphia’s competitive real estate market.

Helpful?

Homeowners in Philadelphia should account for the city’s clay soil, which can expand and contract, stressing foundations. Proximity to rivers raises water tables in some neighborhoods, increasing flood risk. Shared walls in rowhomes, aging sewer lines, and underground utilities may impact project planning. Scheduling work from late spring to early fall helps avoid freeze-thaw cycles and prepares your home for peak storm season.

Helpful?

For Philadelphia homes, use polymer-modified cementitious coatings or elastomeric membranes for foundation walls to handle temperature changes. Install PVC perimeter drains and washed gravel for effective drainage, and add geotextile fabric to prevent clogs from clay soil. Choose a sump pump with battery backup for power outages, and use vapor barriers and mold-resistant materials to address the city’s high humidity and moisture control needs.

Helpful?

In Philadelphia, be wary of quotes that seem unusually low or contractors who pressure you to sign quickly. Watch for professionals who skip a thorough inspection or offer generic solutions without considering your home’s foundation or soil type. Always ask for proof of insurance, local references, and details about necessary permits. Ignoring Philadelphia’s clay soil or not addressing moisture control are also warning signs.

Helpful?

In Philadelphia, regular maintenance includes testing your sump pump before rainy seasons, clearing gutters and downspouts to direct water away from your foundation, and inspecting exterior drains after winter. Annually, clean interior drains and service dehumidifiers to manage humidity. Monitor foundation cracks and check waterproof coatings and window wells twice a year to ensure your basement waterproofing system remains effective.

Helpful?

The Philadelphia, PA homeowners’ guide to basement waterproofing services

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