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Top-Rated Foundation drainage installers and replacers in Lothian - Updated Nov 2026

Avatar for AA Action Waterproofing Inc
AA Action Waterproofing Inc
4.7(
383
)
Foundation Drainage - Install or Replace

Serving Lothian, MD and surrounding areas

Approved

In business since 1987

Free estimates

Warranties offered

"It was a pleasure working with AA Action Waterproofing. We had issues with water seeping through our floor after rain and had no idea where it was coming from or why. Then we saw mold! We needed new sump pump and drainage and 1 wall crack addressed. From the estimate to job completion AA Action Waterproofing was thorough at explaining our issue, the cause, and answered any questions we had. The team was punctual, clean, and did not remove anything other than what was needed (flooring, drywall, etc.). They also did a walk through with us and explained all the work done before they left! Since the work was done, it has rained, and our basement is dry! For the cost, it was great value for the quality of work. Highly recommended!"
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+17

Response time9 hrs
Response rate100%
2 neighbors recently requested a quote
Avatar for AFFORDABLEBASEMENTWATERPROOFING.COM INC
AFFORDABLEBASEMENTWATERPROOFING.COM INC
4.0(
108
)
Foundation Drainage - Install or Replace

Serving Lothian, MD and surrounding areas

Approved

In business since 2000

Free estimates

Emergency services offered

"We have been working with Affordable for a couple of years now. To put it lightly, we have the basement from hell. When they arrived, we had some water in the basement and they quoted us based on their normal pricing. Once the concrete came up, we couldn't believe what we were dealing with. It is a constant flow of water that required two sump pits and an insane amount of work to install our drainage system. Every time they tried to dig a pit it would backfill with sand and water- they had to dig this up painstakingly- foot by foot. We thought for sure we were in for additional costs, but they stuck by the original estimate. Since then, any time we have had an issue or a question, they are quick to answer. Poor Kelly and Bobby probably recognize our number on the caller ID but whenever we make a call or send an email, we always get a response- usually with a visit on the same day. We highly recommend this company for their honesty, customer service, and quality work."
Waterproofing
Waterproofing
Waterproofing
Waterproofing
Waterproofing

+88

Response time1 day
Recommended by83%of homeowners
Avatar for Best Buy Waterproofing, LLC
Best Buy Waterproofing, LLC
4.4(
155
)
Foundation Drainage - Install or Replace

Serving Lothian, MD and surrounding areas

Approved

In business since 2017

Free estimates

Emergency services offered

"I had a great experience with Best Buy waterproofing. I contacted them for inspection due to water rising underneath my tile in the basement. They responded very quickly and had someone out for the inspection a day later. Ed completed my inspection and was very informative and communicative throughout the whole process. He didnâ t try to scare me into getting any services and was very patient with me. Any questions I had he was on it and available. When I made my final decision it was quick and a painless process. The crew cleaned up well and walked me through the work they had done. They installed a new drain and sump pump. Might I add they made my installation very esthetic by placing the line in the wall to hide the pipes when the dry wall is replaced. I will definitely recommend to friends and family!"
Response time2 days
Recommended by98%of homeowners
Avatar for Always Waterproofing
Always Waterproofing
4.2(
427
)
Foundation Drainage - Install or Replace

Serving Lothian, MD and surrounding areas

Approved

Super Service Award Winner

In business since 1995

Free estimates

Credit card accepted

"They installed our sump pump system with backup battering very efficiently and professional and in less than one day. After discussions on the correct equipment, they provided additional effort to be sure the wi-fi backup equipment was installed and was working efficiently. Any questions on installation and operation I had were answered on-the-spot and with ease. System seems great and I now have peace of mind during a bad storm or if the power should go out. I would recommend them to anyone."
Updated concrete deck
Cozy front porch
Response time10 hrs
397 neighbors recently requested a quote
Recommended by90%of homeowners
Avatar for Crawl Space Brothers- MD
Crawl Space Brothers- MD
5.0(
5
)
Foundation Drainage - Install or Replace

Serving Lothian, MD and surrounding areas

Approved

In business since 2019

Free estimates

Warranties offered

Crawl Space Brothers is a family-owned company proudly serving Rockville and nearby areas, including Gaithersburg, Germantown, Potomac, Bethesda, Takoma Park, Chevy Chase, Silver Spring, Washington, D.C., and Arlington. We provide expert solutions for crawl space repair, foundation repair, basement waterproofing, drainage solutions, and moisture control. From resolving crawl space moisture to repairing foundation cracks and wet basements, our tailored services protect your home. With advanced techniques and years of experience, we deliver reliable, long-lasting results. Schedule a free inspection now and see why homeowners trust Crawl Space Brothers.

Crawl Space Brothers
Crawl Space Brothers
Crawl Space Brothers
Crawl Space Brothers
Crawl Space Brothers

+5

Avatar for '58 Foundations
'58 Foundations
3.2(
34
)
Foundation Drainage - Install or Replace

Serving Lothian, MD and surrounding areas

Approved

In business since 1958

Free estimates

Small jobs welcome

"The required fix required that outside trenching be done and B-Dry does not do this type of work. The representative was very knowledgeable about the problem and apologized for not being able to solve the issue. Very much appreciated his honesty."
Crawlspace Encapsulation
Crawlspace Encapsulation
Crawlspace Encapsulation
Crawlspace Encapsulation
Crawlspace Encapsulation

+31

Response time12 hrs
3 neighbors recently requested a quote
Recommended by75%of homeowners
Hydro-Solutions, Inc.
3.2(
3
)
Foundation Drainage - Install or Replace

Serving Lothian, MD and surrounding areas

Approved

In business since 2013

Free estimates

Emergency services offered

Hydro-Solutions, Inc., are experts in Basement Waterproofing and Foundation Repair. We are a locally owned and operated company, that values honesty and integrity in all aspects of our business. Our dedicated team of professionals, have many years of hands on experience, to provide innovative ideas and suggestions tailored to your projects. Our services are customized to your individual needs, paying close attention to the details of each project that we are involved with. Please feel free to contact us today!

Response time5 hrs
Recommended by100%of homeowners
Avatar for Knock You Plumb Out Plumbing Inc.
Knock You Plumb Out Plumbing Inc.
4.5(
194
)
Foundation Drainage - Install or Replace

Serving Lothian, MD and surrounding areas

In business since 2007

Free estimates

Emergency services offered

"Am starting this review for this contractor as he partially finished the job with the promise to be back in two weeks to address the remaining cosmetic clean-up and seeding.  I will finish reviewing the quality of his work in greater details when he comes back to complete the job started and update on the overall quality of his workmanship. 
Roots from a tree had damaged the sewer line of my 1949 house.  Needless to say, it was not pleasant.  I called five contractors and everyone (with the exception of 1) quoted similar estimates for the job.  I chose Knock Your Plumb Out Plumbing because reading the reviews in Angie's List, talking to a reference, and partially because Johnathan (the owner) was proactive in his communication with me.  He was efficient-visited my house, called the city to get a better idea of my sewer line and the city's, identified that a water line may have to be replaced since the sewer line is beneath it, gave me a quote--all within a span of a few hours.  He then followed-up.  I was initially taken aback on how assertive he was, but in retrospect, it was what made Johnathan stood out amongst the other 4 contractors I called.  Once I screened Johnathan, my husband took over the details in communicating with Jonathan while updating me.  My husband and I were quite concerned initially when we read the negative reviews that Jonathan did not come back to finish the job; however, Jonathan was open and willing to discuss our concerns.  He seemed upfront and a straight shooter, which my husband typically appreciates.
Once the contract was signed, Jonathan called to set up a day to begin the job.  Due to several raining days this past week, the work was delayed by a couple of days.  Jonathan and his crew worked all day to hand-dig the yard and completed the job by the evening.  My husband checked in twice throughout the day.  Our yard looks horrible right now, but Johnathan reassures us that I will look better.  He will come back to complete the job in two weeks and seed the yard for grass.  I will become back to finish up this review.  Thus far though, Johnathan is very professional.  His quote is within the range of other contractors' (although he gives a lifetime warranty-not sure whose life's or how we can enforce that though :))!  He is very communicative and will update you on the progress.  He didn't pick up my phone call but did pick up for my husband on the day he was working.  If all goes well, I will definitely recommend Knock Your Plumb Out Plumbing to other friends in the city and will use him again for other works.  Will be back to update this review.  The rating of B for "overall" and "quality" are not reflective of the work per say but as the work is not completed yet, it will have to be a B right now. 
"
Main sewer connection at the house
Working out of a shoring box
This particular sewer happened to be at 14' in depth.
Sediment Filter
sediment filter

+1

Recommended by95%of homeowners
Avatar for Floodbusters Inc
Floodbusters Inc
4.4(
38
)
Foundation Drainage - Install or Replace

Serving Lothian, MD and surrounding areas

In business since 1988

Free estimates

Emergency services offered

"We are very pleased with the excellent results of the installation of the custom-built Grate Drain™ basement drainage system by Floodbusters. The entire team at Floodbusters is courteous, professional, and responsive. We had many concerns and apprehensions about this project because it had to be done in a finished basement area. Mark, who first surveyed the situation, carefully inspected the area and was able to determine the exact location and extent of the drainage and pump system required to limit any unnecessary demolition. He also took the time to answer our many questions and provided material specs and video so that I knew exactly what this project entailed. Craig was able to schedule our project within our timeframe of availability and stuck to it! Charles and Dwayne arrived as scheduled and worked steadily and efficiently. Even the boss came on site to give a hand hauling debris. The team took care to protect and clean surrounding surfaces as they worked. The project was completed on time as promised. We highly recommend Floodbusters for any of your basement waterproofing needs. Their responsiveness, timeliness, and attention to detail in workmanship will give you the confidence in a company that is reliable, trustworthy, and true to its mission in producing a high quality of service."
Finished Base Board System
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Recommended by81%of homeowners
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