J. Great Roofing
Services
Our Work About Service Areas Contact (631) 669-6269 Request Free Estimate
Complete Project Management

General Contracting

From full exterior renovations to structural additions — one contractor managing the entire project. One contract. One point of contact. One warranty covering all of it.

Licensed & Insured
GAF Master Elite
25+ Years Experience
24/7 Emergency
5-Star Rated
One Point of Contact
We Pull All Permits
One Warranty — Full Scope
Coordinated Timeline
One Contractor. All of It.

We Understand Your Goals
Before We Pick Up a Tool

Most home improvement projects fail not because of bad materials — they fail because of poor coordination, miscommunication between trades, and contractors who don't own the outcome.

Our approach to general contracting starts with a simple principle: in order to meet your needs, we must first understand your goals — and maintain that focus through every phase of the project. That means a real conversation before any contract is signed. What are you trying to accomplish? What's the budget you're working with? What's non-negotiable vs. flexible?

That alignment upfront is what prevents scope creep, surprise costs, and the frustration that kills most home improvement projects. We've managed projects of every size on Long Island for 25+ years. We know where problems happen and how to prevent them.

  • Full exterior renovations — roof, siding, gutters, windows, doors
  • Additions and structural work — permitted and inspected
  • Decks, porches, and outdoor living structures
  • Window and door replacement — fully flashed and insulated
  • We pull all permits and coordinate all inspections
  • Licensed general contractor — New York State
Discuss Your Project (631) 669-6269
General contracting project Long Island
Exterior renovation Long Island
25+ Years
Building LI
Project Types

What We Build

Full-scope project management for homeowners who want the job done right — once.

Full Exterior Renovation

Roof, siding, gutters, windows, and doors — all replaced in one coordinated project. One mobilization, one contract, significant cost savings over doing each trade separately.

Get a Quote

Additions & Extensions

Room additions, garage conversions, and structural extensions. We coordinate design, engineering where required, permits, and complete construction from foundation to finish.

Plan Your Addition

Decks & Outdoor Structures

Pressure-treated, composite, and cedar decks built to Long Island code — proper footings, correct ledger attachment, correct joist sizing for the span. No shortcuts.

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Windows & Doors

Energy-efficient replacement windows and exterior doors. We remove old units, properly flash and insulate the rough opening, and install new units to manufacturer specs.

Schedule Estimate

Permits & Code Compliance

We handle all permit applications, coordinate required inspections, and ensure every project meets current Town and State code requirements. You never have to deal with the building department.

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Insurance Claims Work

Storm damage affecting multiple exterior systems? We document everything, work with your adjuster, and handle the full scope of covered repairs in a single mobilization.

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Our Process

How We Run a Project
From Day One

Transparency and communication at every phase — so there are no surprises when you open the final bill.

01

Project Consultation

We meet with you at your property. No clipboard, no measuring tape, no salesperson. Just a real conversation about what you want to accomplish, what you've been told by others, and what timeline and budget you're working with. This is where we understand your goals — before we propose anything.

02

Detailed Written Proposal

Every proposal includes a specific scope of work (not vague descriptions), an itemized materials list with brands and specs, payment schedule, and realistic timeline. You know exactly what you're agreeing to before you sign anything. If something changes, we document it in writing — no verbal change orders.

03

Permit Pulling

We handle all permit applications with the relevant Town, Village, or City building department. We know Long Island municipalities — we know what paperwork each one requires, how long approvals typically take, and how to expedite when needed. You don't make a single call to the building department.

04

Coordinated Construction

Our project manager is on-site or reachable every day. Trades are sequenced so each phase builds on the previous one correctly — no roofer finishing before the windows are rough-framed, no siding going on before flashing is verified. You get regular updates and have a direct line to the person managing your job.

05

Inspections & Closeout

We coordinate and attend all required inspections. Once approved, we do a final walkthrough with you. Every item on your punch list is addressed before we consider the project closed. Warranty documentation is delivered in writing before we leave.

Full exterior renovation Long Island
Most Popular Project

The Full Exterior
Renovation

The most common large project we run is the complete exterior: new roof, new siding, new gutters, and often new windows or doors — all done together in a coordinated sequence.

Homeowners who do these trades separately pay a mobilization premium three or four times, deal with multiple contractors over multiple years, and often get mismatched workmanship at the interfaces between trades. When we do it all at once, the trades are sequenced correctly, every interface is handled by our crew, and you get one warranty covering everything.

  • Roof first — establishes the waterproofing layer everything else ties into
  • Windows and doors framed and flashed before siding
  • Siding installed over continuous house wrap — no gaps
  • Gutters last — sized and positioned for the finished exterior
  • Single cleanup when the job is complete
  • One warranty covering all work performed
Get a Full Exterior Quote
The Advantage

Why One Contractor
Changes Everything

When multiple contractors work the same property, nobody owns the full outcome. We do.

Single Point of Contact

One call handles everything. No chasing three separate contractors for answers or updates. One person is accountable to you for the entire project.

Coordinated Sequence

We sequence trades so each one builds on the previous correctly. No roofer finishing before the siding crew needs access. No conflicts, no rework.

One Warranty

When we do the whole project, there's no finger-pointing if something goes wrong. One warranty covers the full scope — no gaps between trades.

Lower Total Cost

One mobilization instead of four. Materials ordered in bulk. Less site coordination overhead. Full exterior renovations cost meaningfully less when done together.

We Handle Permits

We pull every permit, attend every inspection, and handle all building department paperwork. You never set foot in a municipal building for your project.

Accountability

We've been building on Long Island since 1999. Our reputation is on every job we do. We don't disappear after the check clears — we answer when you call.

What Homeowners Say

Real Reviews From
Long Island Homeowners

★★★★★

"We needed a new roof, new siding, and new gutters. Instead of getting three separate quotes from three different companies, J. Great gave us a single proposal covering all of it. The project took two weeks, everything was sequenced correctly, and the whole exterior looks like a completely different house. One call, one contract, done right."

Michael & Joan T. Huntington, NY
★★★★★

"We added a bedroom and expanded the kitchen — J. Great handled everything including pulling the permits, which nobody wanted to do. They came back for the inspections, addressed the inspector's punch list immediately, and the project got final approval without any issues. Best contractor experience I've had in 20 years on Long Island."

Sandra K. Smithtown, NY
Common Questions

General Contracting FAQs

Answers to the questions we hear before most projects start.

Yes — for any project that requires a permit, we handle the application, submission, and inspection coordination in full. We're familiar with the requirements across Long Island municipalities including the Towns of Babylon, Huntington, Islip, Hempstead, and Oyster Bay. You don't make a single call to a building department. Permits are included in our project scope — not billed as an add-on surprise.

The honest answer: it depends on the size of your home, the materials you choose, and what conditions we find under the existing exterior. What we can tell you is that doing everything together in one project almost always costs less than doing each trade separately over time — and produces better results because trades are sequenced correctly. During your free consultation, we'll walk you through realistic cost ranges before any proposal is written so there are no surprises.

For most residential additions in New York, yes — stamped architectural plans and sometimes engineering drawings are required by the building department. We work with licensed architects and engineers on Long Island and can coordinate that process as part of the project. In some cases, simple additions can proceed with permit drawings prepared by our own team. We'll tell you what's required for your specific project after reviewing the scope.

A full exterior renovation — roof, siding, gutters, and windows — typically runs 1–3 weeks depending on home size, story count, and any substrate issues we find. We give you a realistic timeline in the written proposal and stick to it. Weather can affect outdoor work, but we communicate proactively when scheduling needs to shift — you're never left wondering what's happening.

Yes. For projects triggered by storm or weather damage, we're experienced at working with insurance adjusters. We document all damage thoroughly before the adjuster visit, attend the inspection when requested, and understand how insurance scopes are written so we can advocate for a complete and accurate claim. We don't inflate damage, but we make sure nothing legitimate is left off the claim.

Yes. We hold all required New York State and Nassau/Suffolk County contractor licenses, including Home Improvement Contractor licenses for all municipalities we work in. We carry full general liability insurance and workers' compensation coverage on every project. Documentation is available for review before any contract is signed — and we encourage you to ask any contractor you're evaluating to provide the same.

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Satisfaction Guaranteed

Let's Build Something Great

Tell us what you're planning. Free consultation, honest scope, no pressure.

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