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Windows & Doors

Quality, Craftsmanship & Coastal Durability

Quality Replacement Windows

Friends enjoying coffee in a sun-filled room featuring high-end replacement windows with classic grid patterns installed by Island Harbor Custom Builders in Sebastian, FL.

Replacement Windows for Indian River County

Upgrade your home with durable, energy-efficient, and storm-ready replacement windows installed by experienced Florida builders. Island Harbor Custom Builders delivers precise installations designed for coastal conditions.

Why Choose Us

  • Local, licensed builders — not “just installers.”
  • Small, owner-led company with honest, no-pressure service
  • No manipulative sales tactics or confusing “package deals.”
  • Expertise in complete home construction & structural integration
  • Impact-rated & energy-efficient window options
    Florida Building Code-compliant installation
  • Advanced flashing & sealing for moisture protection
  • Fast, clean, professional service

About the Owners

Brian Neu & Jesse Guthrie founded the company after meeting as neighbors in Island Harbor.
In seven years, they’ve grown from their first $80,000 project to managing multimillion-dollar coastal builds across Indian River County.

  • Deep understanding of framing, structure, and water management
  • Builder-level expertise applied to every window install
  • Known for craftsmanship and clear communication
  • Current projects include large coastal estates

Your replacement windows benefit from this high-end construction experience.

A happy homeowner in Vero Beach using her smartphone in front of newly installed, high-end replacement windows by Island Harbor Custom Builders.

Our Window Services

  • Full window replacement
  • Impact hurricane windows
  • Energy-efficient upgrades (Low-E, insulated glass)
  • Custom styles: single-hung, double-hung, casement, sliders, picture windows
  • Precision fitting, sealing & weatherproofing

Benefits of New Windows

  • Lower cooling costs
  • Stronger storm protection
  • Less outside noise
  • Better curb appeal
  • Increased comfort
  • Enhanced security
  • Long-term durability

Our Process

  • Free consultation
  • Product guidance
  • Exact measurements
  • Professional installation
  • Final inspection & cleanup
ES windows
pgt custom windows and doors

We Constantly Strive to Exceed your Expectations

FAQs

Do I need impact windows?
Recommended in coastal and near-coastal areas for hurricane protection, lower noise, and improved efficiency.

How long does installation take?
Most homes can be completed in 1–3 days.

What maintenance is required?
Minimal — clean tracks, keep weep holes clear, and check seals annually.

Does Island Harbor handle all of the permitting for window projects?
Yes, Island Harbor can handle the entire project, including permitting, from start to finish.

What areas do you serve?
Indian River County, Brevard County, and St. Lucie County

Customer Reviews