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The 10 Best Basement Waterproofing in Naples (2026)
We ranked the top basement waterproofing options in Naples using Google review data and updated the list for 2026. Our approach uses a Bayesian-style score that balances average rating with review volume so businesses with many positive reviews rank highly. In coastal Naples, moisture control and storm-driven water intrusion are frequent concerns for property owners, so finding reputable professionals matters. This list highlights local companies appearing in Google results relevant to waterproofing and related services, making it easier for homeowners and property managers to compare candidates based on real customer feedback.
This ranking is computed from Google reviews (our method). Listings marked Partner are paid advertising spots: they sit alongside the ranking without changing its order.
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R4 Roofing and Reconstruction
R4 Roofing and Reconstruction tops our list because it combines a perfect 5.0 Google rating with the largest review total among entries — 135 reviews. Listed as a roofing contractor and based in Naples (34104), that mix of top score and substantial review volume gives it the highest Bayesian-weighted rank. The concentration of strong, consistent Google feedback is why it appears first in our 2026 update.
The full ranking
EJR COMPANIES, LLC
EJR COMPANIES, LLC also posts a 5.0 score with 55 reviews; Google classifies it as a kitchen remodeler located in the 34104 area of Naples.
55 reviews
Water Damage Naples
Water Damage Naples is rated 5.0 based on 21 reviews and appears as a water damage restoration service in Naples (34109).
21 reviews
WILLIAMS & THOMAS CONSTRUCTION
WILLIAMS & THOMAS CONSTRUCTION carries a 4.9 rating from 77 reviewers and is listed as a construction company in Naples (34104).
77 reviews
Alpha Foundations
Alpha Foundations shows a 4.9 average from 76 Google reviews and is categorized as a concrete contractor; no street address is listed on the profile.
76 reviews
KAS Waterproofing and Building
KAS Waterproofing and Building holds a 5.0 score with 15 reviews and is listed as a waterproofing service in Plantation, FL (319 S State Rd 7).
15 reviews
Alpha Foundations Repair Naples
Alpha Foundations Repair Naples maintains a 4.9 rating across 65 reviews and is identified as a concrete contractor operating in Naples (34113).
65 reviews
AdvantaClean of Naples
AdvantaClean of Naples posts a 4.9 average from 61 reviews and is categorized as a water damage restoration service; its Google profile does not include a street address.
61 reviews
Groundup Leveling
Groundup Leveling is rated 4.9 with 48 reviews and appears under waterproofing service on Google, though no address is shown in the listing.
48 reviews
Regis Construction LLC
Regis Construction LLC has a 4.9 rating from 47 reviewers and is listed as a general contractor in Naples (34112).
47 reviews
Frequently asked questions
How should I choose a basement waterproofing contractor in Naples?
Look for contractors with solid Google reviews, clear proof of insurance, and any required licensing for structural or foundation work. Ask for written estimates, references from recent local projects, and details about the methods and materials they plan to use so you can compare scope and warranties.
What does basement waterproofing typically cost?
Costs vary based on the extent of the issue, accessibility, the chosen method (interior drainage, exterior excavation, sump pumps, etc.), and materials. Get multiple written estimates that break down labor, materials, and any permit fees to understand differences between proposals.
What should I check before hiring a waterproofing or repair company?
Verify insurance and licensing, ask for references and recent photos of completed jobs, and confirm who will handle permits and inspections. Make sure the contract specifies the work, timelines, payment schedule, and any warranty or guarantee in writing.
How was this ranking created and updated for 2026?
This list is based on Google review data and uses a Bayesian-style approach: average rating is weighted by review count so businesses with many high reviews rank higher. The data was refreshed for 2026 to reflect current Google ratings and review totals.