290 Earle St. Central Islip, NY 11722 631-278-8693 [email protected]
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Visit us in Long Island, NY for a consultation and personalized basement solutions Long Island estimate.

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Expert Basement Contractors Serving Long Island

Looking to transform, protect, or repair your basement? At F3 Construction, we specialize in basement solutions Long Island, offering everything from basement waterproofing Long Island to full basement remodeling Long Island NY.

Our skilled basement contractors Long Island deliver tailored solutions—whether you need basement water removal Long Island , a complete basement renovation Long Island NY, or custom basement solutions designed to enhance space, safety, and value. From moisture control to structural reinforcement, we bring craftsmanship and innovation to every project.

What Is a Basement Renovation?

Basement renovation goes far beyond simple upgrades—it means transforming an underused or damaged area into a functional, safe, and comfortable living space.

Our basement renovation Long Islandservices include:

  • Layout redesign & Finishing
  • Basement wall repair Long Island and reinforcement
  • Flooring, lighting & insulation
  • Moisture control andbasement dehumidifier Long Island setup
  • Custom storage and entertainment spaces

As trusted basement contractors Long Island, we align every detail with your needs while improving durability, efficiency, and value.

Our Basement Remodeling Process in Long Island, NY

At F3 Construction, we provide a clear, collaborative Long Island basement remodeling experience: tailored to your vision:

basement installation long island

  • Consultation & Design:


    We discuss your vision, structural conditions, waterproofing needs, and budget to create a custom plan.

  • Material & System Selection:


    Choose from premium flooring, wall systems, insulation, sump pumps, vapor barriers, and more.

  • Construction, Waterproofing & Installation:


    Our licensed and insured basement contractors Long Island NY handle everything—from basement waterproofing Long Island to full remodeling

  • Final Walkthrough:


    A complete inspection to ensure quality, safety, and your total satisfaction.

When Should You Consider a Basement Renovation?

  • Your basement has moisture, leaks, or flooding issues.
  • You need basement water damage restoration Long Island.
  • You want extra living space, rental space, or storage.
  • You need structural support like basement wall reinforcement Long Island.
  • Your home’s value would improve with a finished basement.

Popular Basement Renovation Options

  • Waterproofing Systems: Drainage, sump pumps, vapor barriers.
  • Custom Basement Buildouts: Home theaters, gyms, offices, in-law suites.
  • Flooring & Wall Systems: Moisture-resistant and durable solutions. and visibility with layered lighting.
  • Basement Flood Repair Long Island: Fast and reliable recovery services.
  • Basement Wall Repair Long Island: Crack repair, reinforcement & stabilization.
  • Dehumidifier Installation: Improve air quality and reduce moisture.

Why Choose F3 Construction for Basement Services in Long Island?

With over 20 years of experience, F3 Construction leads in basement waterproofing Long Island, basement remodeling Suffolk County, and structural repair.

Our dedication to quality, integrity, and customer satisfaction ensures every project is completed with precision. As fully licensed and insured basement contractors Long Island NY, you can trust us for reliable, long-lasting solutions—from water damage restoration to complete basement transformations.

Pouring cement into a bucket at a construction site.

Testimonials

See what homeowners say about their basement renovation Long Island and waterproofing projects with F3 Construction:

Review 1

Jeanette Lutin

3 Months Ago

I recently had my bathroom renovated, and I could not be happier with the results! From start to finish, the entire process was smooth, professional and stress-free. The team was Punctual, respectful of my home and communicated clearly every step of the way.

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Review 2

John Penza

A Year Ago

F3 was highly recommened by our neighbor. The owner Olman brought samples and sat down with us to review all the options. He was very helpful. I can't say enough about the crew and the GM Ivis. They were very respectful, cleaned up & checked with us every evening before...

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Review 3

George Macrelli

3 Months Ago

I highly recommend F3. They had to rebuild a cedar pool deck were structure was failing. They did a great job in making it structurally sound for years to come. F3 has a very detailed professional staff that really care about the quality of there service.

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Review 4

Laura Parker

3 Months Ago

Olman and his crew completed a beautiful job in my home, installing crown molding throughout. They were efficient, meticulous, courteous, well priced, and neat. Looks gorgeous! Would highly recommend!

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Review 5

Paul Anderson

10 Months Ago

F3 construction made the whole bathroom remodeling process very easy. They were meticulous and efficient from the demo to the painting. Cleaned up after everydays work and were on time everyday there after. We are extremely pleased with the final results. The project was completed in the...

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Review 6

Edward Freudenberg

10 Months Ago

F3 construction is a pleasure to work with and they do great work. I highly recommend them

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Review 7

Karen Obrien

A Year Ago

The F3 construction corporation, owner Olman, and the entire crew are a kind, dependable, professional team ..their knowledge of construction, work ethic , positive attitude , and willingness to understand the customer's needs.. far exceeds any other company. F3...

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Frequently Asked Questions

  1. How much does basement remodeling cost on Long Island?
    Basement remodeling on Long Island typically ranges from $20,000 to $85,000, depending on waterproofing needs, size, structural repairs, and materials.

  2. How much does basement waterproofing cost?
    Most Long Island homeowners spend $3,000 to $12,000, depending on the type of system and severity of water issues.

  3. What causes basement water problems?
    Poor drainage, hydrostatic pressure, foundation cracks, high humidity, or severe weather can lead to flooding and water damage.

  4. What is included in basement waterproofing?
    Interior drainage systems, sump pumps, vapor barriers, crack sealing, exterior grading, and dehumidification.

  5. Can you finish a basement that previously had water damage?
    Yes—after proper basement water damage restoration Long Island, waterproofing, and structural repair, we can fully remodel and finish the space.