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TRUSTED BY WASHINGTON, DC HOMEOWNERS

  • Average homeowner rating star icon4.2
    Average homeowner rating
  • Verified reviews icon247
    Verified basement waterproofing services reviews

Find Basement waterproofing pros in Washington

Avatar for AA Action Waterproofing Inc
AA Action Waterproofing Inc
4.7(
383
)

Serving Washington, DC and surrounding areas

Approved

In business since 1987

Free estimates

Warranties offered

"Job was promised to be less than two days. The crew arrived at the time agreed on and was thorough, covered walls not affected by the work and were finished by the end of the morning. I will recommend AA Action to anyone in need to basement waterproofing, crawl space improvements and related items."
Additional Photos
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+17

Response time9 hrs
Response rate100%
2 neighbors recently requested a quote
Avatar for Basement Waterproofing Nationwide Inc
Basement Waterproofing Nationwide Inc
4.6(
183
)

Serving Washington, DC and surrounding areas

Approved

In business since 1987

Free estimates

Emergency services offered

"This was a huge job. A complete basement waterproofing - new internal drains installed and two new sump pumps installed. The guys were great - came on time worked hard all day and cleaned up after themselves. The only negative was at the completion of work when it was time to pay the amount was less than what was originally quoted. I told the guy that and he insisted that it was what he had. I even showed him the quote on paper. I paid it - glad it was less, but a few days later got a call from the office telling me I needed to pay another $1600 (the difference between the original quoted price and at the time of service price) I told her what the guy told me and she got a little rude saying "well you knew what the quoted price was" - yeah I DID know and was prepared to pay but after install HER guy insisted it was the price he had. I wasn't trying to get out of paying but the confusion on how much it costs was with the people working there. I didn't appreciate her attitude as if I was trying to skimp out of paying. Nevertheless, I ended up with this additional payment. However, the work is supposed to be guaranteed for life. No complaints there."
Additional Photos
Response time2 days
30 neighbors recently requested a quote
Recommended by92%of homeowners
All Aspects Waterproofing, LLC
4.6(
188
)

Serving Washington, DC and surrounding areas

Approved

In business since 2006

Free estimates

Emergency services offered

"We are the 2nd owners of a 15 year old home. Don't know why the original owner/builder did not put a sump pump in the basement, as it would have been a cheaper option in the end. If you are building a new home with a basement, put a sump pump in, don't scrimp on what is a very valuable insurance policy. After looking at a handful of other companies to retrofit a sump pump in our cellar, we picked All Aspects Waterproofing, LLC. They did a great job! Very high quality work, and outstanding service. They did a great job! We enthusiastically recommend All Aspects Waterproofing to any homeowner!"
Response time1 day
24 neighbors recently requested a quote
Recommended by98%of homeowners
Avatar for NV Waterproofing & Foundation Repair
NV Waterproofing & Foundation Repair
4.5(
185
)

Serving Washington, DC and surrounding areas

Approved (Corporate)

In business since 1986

Free estimates

Emergency services offered

"I was very impressed with the whole experience with NV Waterproofing, from the estimate to the completion of the work. I had mold growing on a basement wall and a perpetual musty smell in the basement. Cristian came out to do the estimate. He did a full walk around outside the house and then did a thorough inspection of the basement. It was good to see that he used a moisture meter when doing the inspection. It's amazing that out of four companies that did estimates, NV Waterproofing and one other were the only ones to bring that tool. He looked at a waterproofing system that had been installed right before I moved in and explained what was wrong with it and then explained how it could be fixed. He was patient and explained everything. I appreciated that he did not put any pressure on us to sign anything before he left. After getting the estimate, I had questions and called the office t get answers. The office staff was great, answering what they could and forwarding the rest to Cristian who answered them promptly. Between scheduling the work and the work beginning, the Covid crisis hit. NV Waterproofing was great with working with us to explain our options of continuing with the work or rescheduling. I decided to go ahead with the job. The crew that performed the work was very professional. All had masks, all kept a good distance, and they did a great job of keeping the place clean. The foreman was easy to contact and promptly answered any questions I had during the job. All in all they were great. Including coming back promptly to finish off a final piece of work that had gotten overlooked."
Crawlspace Encapsulation
Damp dirty crawlspace with Rodent infestation
Additional Photos
Exterior drainage
Wall Anchors for failing foundation walls

+29

Response time1 day
Response rate99%
45 neighbors recently requested a quote
Avatar for Best Buy Waterproofing, LLC
Best Buy Waterproofing, LLC
4.4(
155
)

Serving Washington, DC and surrounding areas

Approved

In business since 2017

Free estimates

Emergency services offered

"Best Buy Waterproofing did a great job servicing our basement. The workman wore masks and were very aware of COVID-19. I would recommend them to anyone! The quality of their work was exceptional."
Response time2 days
5 neighbors recently requested a quote
Recommended by98%of homeowners
Avatar for Drainage and Erosion Solutions
Drainage and Erosion Solutions
4.2(
309
)

Serving Washington, DC and surrounding areas

Approved

In business since 2003

Free estimates

Warranties offered

"They did an excellent job of waterproofing our foundation, burying downspouts, and replacing a patio to guarantee drainage away from the house. Most of our interaction was with the crew foreman. He spoke good English, showed attention to detail, and did a careful, professional job even when the weather got so hot we found ourselves urging the crew to take more breaks. They were not the cheapest bid, but worth it for the skilled workmanship. This is the second project we have hired them to do, and I would recommend them for any work where drainage is important."
The property before we began.
First step - demolition
Regrading and Patio
Regrading and Patio
Regrading and Patio

+66

Response time1 day
Response rate91%
4 neighbors recently requested a quote
Avatar for JES Foundation Repair
JES Foundation Repair
4.2(
1,023
)

Serving Washington, DC and surrounding areas

Approved (Corporate)

Super Service Award Winner

In business since 1993

Free estimates

Emergency services offered

"We had our basement waterproofed by JES and one of the sump pumps malfunctioned. Marty, the service technician, did a great job assessing the problem and repairing it quickly. Great service!"
Protect Your Basement
Protect Your Basement Before & After
Correct Your Wet Basement
Waterproof Your Basement
Protect Your Concrete Before & After

+16

362 neighbors recently requested a quote
Recommended by79%of homeowners
Avatar for Kozan Construction, LLC
Kozan Construction, LLC
4.6(
36
)

Serving Washington, DC and surrounding areas

Approved

In business since 1985

Free estimates

Emergency services offered

We have over 10 years of experience in the business. Here at Kozan Construction, LLC, we pride our company on reliability, great communication, integrity and quality work. We are experts in our trade and will do our best to keep you as educated as we can on your particular task or project. We look forward to earning your business!

Master bathroom walls and floor
Travertine tiles on Master bathrom
Cabinets and Counter Top
Kitchen Cabinets and Counter Top
Master Bathroom With Shower

+16

Response time6 hrs
13 neighbors recently requested a quote
Recommended by66%of homeowners
Avatar for Desire Masonry Construction, LLC
Desire Masonry Construction, LLC
4.0(
15
)

Serving Washington, DC and surrounding areas

Approved

In business since 2017

Free estimates

Emergency services offered

We take great pride in our experience, home improvement, quality, and customer service that we provide to meet the consumer's needs. It is our mission to provide excellent workmanship and complete customer satisfaction from start to completion of a project. We specialize in all your outdoor needs from concrete installation and repair to all masonry needs. Our reputation is based on service, safety, and quality, regardless of how large or small the job.

Bluestone Patio & Bench
Natural Stone Retaining Wall
Bluestone Steps
Bluestone Steps
Bluestone Steps

+28

Recommended by100%of homeowners
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Basement Waterproofing questions, answered by experts

Signs your Washington home may need basement waterproofing include musty odors, damp spots, peeling paint, or visible cracks in basement walls. Homes in low-lying areas, near the Potomac, or with older construction are at higher risk. If you notice high humidity, uneven floors, or seasonal water intrusion, it’s wise to schedule a professional evaluation to determine the best waterproofing approach.

Helpful?

Combining basement waterproofing with other upgrades in Washington can be a smart move. If you’re already opening up walls or floors, consider bundling projects like foundation repairs, electrical updates, or HVAC improvements. This approach reduces repeated disruptions and may streamline permit approvals. Coordinating with local contractors can also help you avoid scheduling conflicts and ensure all work meets Washington’s building codes.

Helpful?

In Washington, pay close attention to the city’s clay-heavy soil, which can increase hydrostatic pressure on your foundation. Homes near Rock Creek or in flood-prone zones may need extra drainage solutions. If you live in a historic neighborhood, review any restrictions on exterior changes. Limited street parking and narrow alleys can also affect access for contractors and equipment, so plan logistics in advance.

Helpful?

In Washington, unexpected costs often come from discovering hidden foundation cracks, outdated wiring, or old plumbing during waterproofing. Older homes may also have lead paint or asbestos that require special handling. Additional expenses can arise if tree roots interfere with drainage systems or if weather delays work. Be prepared for possible extra inspections or permit requirements that can extend your project timeline.

Helpful?

In Washington, maintaining your basement waterproofing system means regularly cleaning gutters, checking downspouts for blockages, and ensuring proper grading around your foundation. Test sump pumps before the rainy season and inspect for new cracks or moisture. Keep dehumidifiers running in humid months, and trim back tree roots near drainage lines. Annual professional inspections help catch issues early and may be needed for warranty coverage.

Helpful?

The Washington, DC homeowners’ guide to basement waterproofing services

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