F3 Construction Corp
290 Earle St. Central Islip, NY 11722 631-278-8693 F3ccorp@gmail.com
Free Quote Service
F3 Construction Corp
BBB

Expert Basement Contractors Serving Long Island

Looking to transform, protect, or repair your basement? At F3 Construction, a home improvement company based in Central Islip, we offer everything from basement waterproofing to full basement remodeling and finishing on Long Island.

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

Typical investment on Long Island: basement remodeling ranges from $20,000 to $85,000, and most homeowners spend $3,000 to $12,000 on basement waterproofing. Final pricing depends on waterproofing needs, size, structural repairs, and materials.

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 and finishing services on Long Island include:

  • Basement finishing and layout redesign
  • Basement wall repair and reinforcement
  • Flooring, lighting & insulation
  • Moisture control and dehumidifier setup
  • Custom storage and entertainment spaces

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

Need more than the basement? Explore our bathroom remodeling and interior renovation services, or browse our project gallery. For floors and walls, see our tile installation service.

Helpful guides from our blog: basement finishing vs. custom basement solutions, the three types of basement waterproofing, leaks in basement walls, basement water removal, and sump pump installation.

Our Basement Remodeling Process in Long Island, NY

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

Process Image

  • Consultation & Design


    We start with a free on-site estimate and 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 team handles everything—from waterproofing to full remodeling.

  • Final Walkthrough


    A complete final inspection to check the quality and safety of the finished work.

When Should You Consider a Basement Renovation?

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

Popular Basement Renovation Options

  • Waterproofing Systems: Drainage, sump pumps, vapor barriers.
  • Basement Finishing & Custom Buildouts: Home theaters, gyms, offices, in-law suites.
  • Flooring & Wall Systems: Moisture-resistant and durable solutions for floors and walls.
  • Flood Repair: Water removal and repair after flooding.
  • Wall Repair: 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 handles basement waterproofing, basement remodeling in Suffolk County, and structural repair.

Our dedication to quality, integrity, and customer satisfaction guides every project. As fully licensed and insured basement contractors, we offer reliable solutions—from water damage restoration to complete basement transformations.

Service Media Image

Testimonials

See what clients say about working 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.

Read More
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...

Read More
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.

Read More
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!

Read More
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...

Read More
Review 6

Edward Freudenberg

10 Months Ago

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

Read More
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...

Read More

How to Find Us

Visit us in Central Islip, Long Island, NY for a consultation and a personalized basement estimate.

We also come to your home: homeowners across central and western Suffolk County can request free on-site estimates with no travel fees. See our location and service area.

View on Google Maps

Schedule Your Basement Consultation Today!

Contact Us Now
Click to load interactive map

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 water damage restoration, waterproofing, and structural repair, we can fully remodel and finish the space.

  6. What does basement finishing include?
    Our basement finishing services include layout redesign, flooring, lighting and insulation, moisture control, and custom storage and entertainment spaces.

  7. Do you offer free estimates for basement work?
    Yes. F3 Construction offers free on-site estimates for basement remodeling and waterproofing across central and western Suffolk County, with no travel fees. You can request yours through our contact page.

  8. Does your team speak Spanish?
    Yes. F3 Construction has a bilingual team (English and Spanish).