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Best basement waterproofing pros near Key Largo, FL

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Top-Rated Basement waterproofing pros in Key Largo - Updated Nov 2026

Avatar for Groundworks
Groundworks
5.0(
73
)
Foundation, Basement or Crawlspace - Waterproofing / EncapsulationBasement Drainage Channels - InstallBasement Drainage Channels - Repair

Serving Key Largo, FL and surrounding areas

Approved (Corporate)

In business since 2002

Free estimates

Warranties offered

"We were having a washout situation under our Florida room slab and the Alpha team of Junior, Dalin and Zach arrived on time, reviewed the situation and their solutions and proceeded with their poly foam injection system through our floor slab to fill and stabilize the washed out areas below. After completion, they cleaned up the work area requiring no additional work on our end. We appreciated their efficiency and professionalism throughout the entire process. Great team and company."
Foundation
Foundation
Foundation
Foundation
Foundation

+13

91 neighbors recently requested a quote
Recommended by83%of homeowners
Avatar for GGR quality construction llc
GGR quality construction llc
5.0(
14
)
Basement Drainage Channels - InstallBasement Drainage Channels - Repair

Serving Key Largo, FL and surrounding areas

Approved

In business since 2020

Free estimates

Credit card accepted

"I would like to express my most sincere gratitude to this company for the excellent work they performed in replacing the bathroom in my home. From the very first moment, they proved themselves to be highly responsible, punctual, and professional. The quality of their work exceeded my expectations; they paid attention to every detail, and the final result turned out beautifully. Their dedication and commitment to what they do are truly evident. Without a doubt, I recommend them 100%. It is difficult to find people who are this reliable and committed nowadays. Thank you so much for doing such an impeccable job. If you like, my dear, I can personalize this with the name of the company or the person who did the work for you, to make it even more special."
32 neighbors recently requested a quote
Avatar for A&S Paving LLC
A&S Paving LLC
4.3(
75
)
Basement Drainage Channels - Install

Serving Key Largo, FL and surrounding areas

In business since 2012

Free estimates

Emergency services offered

"While I am pleased with the quality of the job, I didn't like the owner trying to add more than I agreed on. I got a call in the am from owner Anthony Stanko telling me he had a canceĺlation. He asked if they could do my driveway that afternoon. I okayed it. He responded, but left once his crew started working. He returned when the 3" layer of asphalt we agreed on, was in place. It was then he tried to sell me an additional layer, saying it would prevent water damage. He offered it for an additional $ 2500 initially, but when I hesitated he dropped the price first to $2000, then $1500, without any negotiating by me. I became suspicious his "am" cancellation called for more asphalt than was needed to do my driveway and felt he was trying to recoup his losses by dumping it on me."
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+22

Recommended by83%of homeowners
AAA Waterproof and Painting, Corp.
4.0(
1
)
Foundation, Basement or Crawlspace - Waterproofing / Encapsulation

Serving Key Largo, FL and surrounding areas

In business since 2019

Free estimates

Credit card accepted

We're dedicated to providing our clients with the very best in concrete installation and repair for driveways, excavation and waterproofing and a variety of other projects. With over 3 years of industry experience, we take and enormous amount of pride in the attention to detail put into each of the projects we're involved with. We're known for our quality work and the integrity of our business. We look forward to building long-term relationships with our clients, and guarantee your satisfaction.

Response time50 mins
Recommended by100%of homeowners
All around plumbing
4.4(
8
)
Basement Drainage Channels - Install

Serving Key Largo, FL and surrounding areas

In business since 2003

Free estimates

Emergency services offered

"Fast, great, and courteous service. Practiced social distancing and wore face masks for courtesy, respect, and health safety of our family and theirs. Had all the parts with them for a speedy and quality repair. Great prices. We will use them again in the future for any plumbing needs."
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+18

Recommended by100%of homeowners
Showing 1-10 of 17
Basement Waterproofing FAQs, answered by experts

Yes, it’s worth it to repair a crawl space foundation, even if the issue seems relatively minor. Foundation problems often get worse and more expensive to fix if you leave them untreated. Additionally, your entire home, from the framing and flooring to the roof system, relies on the foundation for even and level support. Issues with your foundation will almost always manifest as problems in and above your living space, so it’s important to find a solution.

In most cases, yes, because the large majority of basements leak or will have moisture issues at some point, and waterproofing methods can mitigate that risk or eliminate it entirely. Plus, water and moisture issues can be quite problematic, as they can lead to mold growth, rotting of building materials, structural damage, poor indoor air quality, increased electric bills, and other problems.

Permits may be required for major repairs, structural work, or electrical and plumbing restoration after a flood. Check with your local building department to determine permit requirements and associated fees for your flooded basement cleanup project. Obtaining the correct permits helps ensure work is done safely and up to code.

Yes, cleaning a crawl space is worth the cost. Although it's an out-of-sight area, neglecting it can lead to significant problems like pest infestations (including termites and carpenter ants), mold, and fungal growth, which can cause structural damage. Regular cleaning helps prevent these issues. While hiring a contractor has ongoing costs, the price for cleaning—typically between $0.50 and $4 per square foot—is much lower than the cost to remediate a pest or mold problem. Additionally, a clean crawl space can lead to improved indoor air quality and more comfortable temperatures in your home.

Interlocking garage tiles made with PVC are the most effective for garages with past issues of humidity and flooding because damp concrete is not suitable for paint. Epoxy coating is also water-resistant and can prevent mold buildup. Finally, porcelain tiles are a wonderful option for wet conditions if your budget allows.

The Key Largo, FL homeowners’ guide to basement waterproofing services

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