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  • Average homeowner rating star icon4.5
    Average homeowner rating
  • Verified reviews icon32
    Verified foundation repairs reviews

Verified Reviews for Foundation Repair pros in Harrington, DE

*The Angi rating for Foundation Repair companies in Harrington, DE is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Foundation Repair needs.

*The HomeAdvisor rating for Foundation Repair companies in Harrington, DE is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Foundation Repair needs.

Last update on December 05, 2025

Find Foundation repair specialists in Harrington

Basement Waterproofing Specialists

4.32(
442
)
•Approved Pro

Basement Waterproofing Specialists

4.32(
442
)
•Approved Pro
Customers say: Quality work
180 local quotes requested
16 years of experience

Our personnel make up the complete collection of the best in the industry with decades of experience. We are a small family-owned business, not a giant corporation. We treat you like family and that's the difference! We pride ourselves on being the most professional family-owned business in our industry. We employee the highest caliber employees and use the best quality products available. We are fully licensed Home Improvement Contractors in every state we serve with the goal of leading the forefront of innovation in all that we do and setting the standard in this trade. We were the first to: Conduct mold remediation while simultaneously waterproofing. Offer lifetime warranties for our waterproofing services for the life of the structure. Offer lifetime warranties for the sump pumps. (We know they will not last a lifetime; it is a free replacement for our customers and our appreciation of their business). Clean out basement crawlspaces and garages while waterproofing.

"The job inside was done. However the drainage put in outside has turned our yard into a swimming pool. We once had a pipe draining to the creek and this was a perfect solution to the rains/weather. These guys came in and put a round small cylinder well. Water pumps up into our yard turning it into a swamp. Called them to come and see the problem they created. Their response $2900 to fix THEIR DAMAGE. I WOULD NEVER RECCOMEND THIS COMPANY!!"

Mike F on June 2025

Our personnel make up the complete collection of the best in the industry with decades of experience. We are a small family-owned business, not a giant corporation. We treat you like family and that's the difference! We pride ourselves on being the most professional family-owned business in our industry. We employee the highest caliber employees and use the best quality products available. We are fully licensed Home Improvement Contractors in every state we serve with the goal of leading the forefront of innovation in all that we do and setting the standard in this trade. We were the first to: Conduct mold remediation while simultaneously waterproofing. Offer lifetime warranties for our waterproofing services for the life of the structure. Offer lifetime warranties for the sump pumps. (We know they will not last a lifetime; it is a free replacement for our customers and our appreciation of their business). Clean out basement crawlspaces and garages while waterproofing.

"The job inside was done. However the drainage put in outside has turned our yard into a swimming pool. We once had a pipe draining to the creek and this was a perfect solution to the rains/weather. These guys came in and put a round small cylinder well. Water pumps up into our yard turning it into a swamp. Called them to come and see the problem they created. Their response $2900 to fix THEIR DAMAGE. I WOULD NEVER RECCOMEND THIS COMPANY!!"

Mike F on June 2025

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
895 local quotes requested
15 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!

"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 Groundworks

Groundworks

4.54(
328
)
•Approved Pro

Groundworks

4.54(
328
)
•Approved Pro
Customers say: Super punctual
37 local quotes requested
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)

"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! PA158514 (PA)

"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

Avatar for Solid Ground Solutions

Solid Ground Solutions

5.00(
40
)
•Approved Pro

Solid Ground Solutions

5.00(
40
)
•Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
55 local quotes requested

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

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

J. Daley

No reviews yet

J. Daley

No reviews yet

Family owned contracting company. Father and son team with over 50 years experience. Licensed-insured. Roof repairs. Driveway sealing. Decks. Etc. free estimates.

Family owned contracting company. Father and son team with over 50 years experience. Licensed-insured. Roof repairs. Driveway sealing. Decks. Etc. free estimates.

Avatar for DeCarlo Concrete And Masonry

DeCarlo Concrete And Masonry

4.40(
5
)

DeCarlo Concrete And Masonry

4.40(
5
)
Customers say: Quick response
5 years of experience

At DeCarlo Concrete And Masonry, our mission is to provide our customers with exceptional workmanship, excellent customer service, and extraordinary professionalism. Locally owned and operated, we are backed with over 6 years of experience. We will seek to provide these services within an appropriate time frame as a result of our focused approach and quality professional service.

"I had a large, 10 x 32 patio poured with concrete steps. It came out better then I imagined. Everyone in the crew was polite, professional, and left my yard clean. Great job, I would hire again."

Joe A on August 2020

At DeCarlo Concrete And Masonry, our mission is to provide our customers with exceptional workmanship, excellent customer service, and extraordinary professionalism. Locally owned and operated, we are backed with over 6 years of experience. We will seek to provide these services within an appropriate time frame as a result of our focused approach and quality professional service.

"I had a large, 10 x 32 patio poured with concrete steps. It came out better then I imagined. Everyone in the crew was polite, professional, and left my yard clean. Great job, I would hire again."

Joe A on August 2020

J & A Masonry & Concrete LLC

5.00(
2
)

J & A Masonry & Concrete LLC

5.00(
2
)
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers

Been in this line of work for 20 years +

"They did excellent work. They showed up on time, very professional, and they had a reasonable price."

Donald O on July 2019

Been in this line of work for 20 years +

"They did excellent work. They showed up on time, very professional, and they had a reasonable price."

Donald O on July 2019

Avatar for AVG Waterproofing, LLC

AVG Waterproofing, LLC

5.00(
4
)

AVG Waterproofing, LLC

5.00(
4
)
Customers say: True professional
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers

AVG waterproofing over 25 years on the business

"Excellent service. Punctual, expert, no noise what so ever. Smooth hire-do process. I love everything about Alex! He is all what I needed for my waterproofing job. Reasonable, approachable, pro!"

Kaleh M on July 2019

AVG waterproofing over 25 years on the business

"Excellent service. Punctual, expert, no noise what so ever. Smooth hire-do process. I love everything about Alex! He is all what I needed for my waterproofing job. Reasonable, approachable, pro!"

Kaleh M on July 2019

Avatar for Complete Concrete Systems

Complete Concrete Systems

3.67(
3
)

Complete Concrete Systems

3.67(
3
)
Customers say: Quick response
17 years of experience

Complete Concrete Systems provides a full line of concrete work including decorative concrete (staining, polished, polyaspartic coatings for garage floors) as well as foundation repairs, restoration of damaged concrete, and all types of flatwork.

"Did not grind. They said it did not need it. Had a patio and walkway stained and sealed. They took a phone photo of the wet concrete. When it dried it was a disaster. Concrete coming through the stain. Immediately called to come look at it but since I had only paid 1/2 down the owner, Jason Stolba refused. Saying when I paid the balance he would check it out. The salesman said I was a pain because I kept calling when he was at the hospital visiting his sick mother. I asked how am I to know where you are? At this point Timothy Partner got very nasty telling me I was tiring with all my questions. I have a multitude of pictures I could furnish I asked Mr Stolba for my money back and he said if I took my negative review down he would comply."

Linds S on June 2021

Complete Concrete Systems provides a full line of concrete work including decorative concrete (staining, polished, polyaspartic coatings for garage floors) as well as foundation repairs, restoration of damaged concrete, and all types of flatwork.

"Did not grind. They said it did not need it. Had a patio and walkway stained and sealed. They took a phone photo of the wet concrete. When it dried it was a disaster. Concrete coming through the stain. Immediately called to come look at it but since I had only paid 1/2 down the owner, Jason Stolba refused. Saying when I paid the balance he would check it out. The salesman said I was a pain because I kept calling when he was at the hospital visiting his sick mother. I asked how am I to know where you are? At this point Timothy Partner got very nasty telling me I was tiring with all my questions. I have a multitude of pictures I could furnish I asked Mr Stolba for my money back and he said if I took my negative review down he would comply."

Linds S on June 2021

Innovative Construction and Remodeling, LLC

5.00(
1
)

Innovative Construction and Remodeling, LLC

5.00(
1
)
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers

Guaranteed "No High Pressure Sales Tactics" a local Delaware home improvement contractor you can trust. We will go the extra mile to give you a fair and honestly priced project.

Guaranteed "No High Pressure Sales Tactics" a local Delaware home improvement contractor you can trust. We will go the extra mile to give you a fair and honestly priced project.

Showing 1-10 of 27
Foundation Repair questions, answered by experts

Most houses are expected to settle over time, but foundation sinking of more than a few inches or uneven sinking of more than an inch for every 20 feet is cause for concern. Any significant or uneven sinking should be assessed by a professional to determine the cause and perform any necessary repairs. 

Addressing gaps and cracks reduces heat loss and improves energy use.

There are many actions that specialists can take to repair a bad foundation. However, just like a car, a specialist will determine whether the cost of repairs is worth it in the long run. In many cases, repairs to the surrounding property—such as regrading your lawn or addressing lawn drainage issues—will also be necessary.

Regularly inspecting your foundation—at least the visible sections—for signs of foundation issues like moisture and pest infestation is a good way to identify slab leaks early, as is keeping an eye and ear out for water damage to indoor building materials, above-average water bills, sounds of running water when no fixtures or appliances are on, and indoor humidity that causes the temperatures to feel more extreme. If you do find any issues, contact a plumber right away to check it out for you.

Minor slab leaks normally take around three hours to access and fix, provided the leak is in an accessible location. However, a more extensive leak or a leak in a hard-to-reach location can take several days to fix, depending on the resulting damage. You might also want to consider the timeline for the build-back if the leak damages building materials like flooring or cabinets, which can take several weeks, including delivery of the materials.

The Harrington, DE homeowners’ guide to foundation repairs

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

See all articles