You have been searching for “home renovation cost Long Island” for weeks. Every answer gives you a different number. National sites say $75 to $185 per square foot. Local contractors say, “It depends.” Your neighbor quotes what they paid three years ago, but the market has shifted since then.
You want a real number so you can make a real decision about your home.
Here is the truth. Long Island is not the national average. Labor costs are closer to New York City rates. Permits vary from town to town across Nassau and Suffolk counties. And most homes here were built decades ago, meaning the moment you open walls, you are dealing with outdated wiring, old plumbing, and code upgrades nobody planned for.
This guide gives you honest numbers from a contractor who has been renovating Long Island homes for over 43 years.
Why Long Island Costs More Than National Averages
Long Island home remodeling costs range from $150 to $350+ per square foot for a full gut renovation. The national average sits between $75 and $185. Three factors drive that gap.
Labor is expensive here. According to the Bureau of Labor Statistics, construction wages have increased roughly 4% year-over-year through 2025. Skilled tradespeople on Long Island command rates comparable to Manhattan.
Permits vary by town. A renovation in Port Jefferson Station goes through a different process than one in Manhasset or Huntington. That complexity adds time and cost.
Older homes create surprises. Most Long Island homes were built in the 1950s through the 1980s. Once walls come down, contractors frequently discover knob-and-tube wiring, galvanized plumbing, or foundation settling. These are code requirements, not optional upgrades.
If you are budgeting with national numbers, you are setting yourself up for a shock. Understanding the renovation process step by step helps you plan with confidence.
What a Full-Gut Renovation Actually Costs
A full-gut renovation takes the interior down to the studs and rebuilds everything. Here is what that costs on Long Island in 2026:
- Basic renovation (standard finishes, no structural changes): $100 to $200 per square foot
- Mid-range renovation (upgraded materials, partial layout changes, hardwood floors): $200 to $350 per square foot
- High-end / luxury renovation (custom finishes, full redesign, premium fixtures): $350+ per square foot
For a 2,000-square-foot home, that means $200,000 to $700,000+, depending on scope.
One critical distinction: wet rooms cost far more than dry rooms. Kitchens and bathrooms involve plumbing, waterproofing, tile, cabinetry, and specialty fixtures. A mid-range kitchen remodel on Long Island starts around $35,000. High-end custom kitchens push past $100,000, according to Remodeling Magazine’s Cost vs. Value Report for the Middle Atlantic region.
Dry rooms, bedrooms, living rooms, and offices cost significantly less per square foot. Always separate your wet and dry square footage when budgeting. It gives you a far more accurate picture.
Room-by-Room Breakdown
Kitchen: Mid-range $35,000 to $75,000. High-end $75,000 to $150,000+. Cabinetry alone accounts for 30% to 40% of the total kitchen budget.
Bathroom: Budget refresh $15,000 to $25,000. Mid-range full gut $25,000 to $50,000. High-end spa-style $50,000+.
Basement finishing: Basic conversion costs range from $25,000 to $40,000. With bathroom and custom finishes, $40,000 to $60,000+.
Dormer addition: Second-floor addition on a cape starts at $170 per square foot. Paired with a first-floor gut, the first floor starts around $80 per square foot.
Dormers remain one of the most popular renovations on Long Island, especially for cape-style homes, where you can add major square footage without expanding the footprint. See how we approach additions and dormers.
Hidden Costs Most Homeowners Miss
Structural surprises. Termite damage, load-bearing walls where plans assumed none, and water damage behind tile. Budget a 10% to 15% contingency for unknowns.
Code compliance. Homes built before the 1990s almost always need electrical, plumbing, and insulation upgrades to meet current code. This is mandatory when you pull permits.
Material lead times. Custom cabinetry takes 8 to 10 weeks. Delayed selections are the most common reason renovations go past the deadline. We have seen projects drag on for weeks because homeowners waited too long to pick their cabinets.
Temporary housing. During a full gut, most families cannot live in the home. Plan for several months of alternative housing, potentially $10,000 to $30,000+.
The contractors who plan for these costs upfront keep your project on budget. The ones who ignore them are the reason renovation horror stories exist.
How to Get an Estimate You Can Trust
- Start with a site visit. Anyone quoting a price without seeing your home is guessing.
- Get specific about scope. Cosmetic refresh or full gut? Moving walls? Adding square footage? The answer changes everything.
- Ask how they handle surprises. Every renovation has them. You want a contractor with a transparent change-order process.
- Request a line-item estimate. Not a lump sum. See labor, materials, permits, and management broken out separately.
- Check their timeline track record. Budget overruns and timeline overruns go hand in hand.
At Uprite Plus, we provide a detailed estimate after an on-site walkthrough. We break down costs by phase, document every change order, and send daily progress updates so you always know where things stand.
Your Next Step
Call Uprite Plus at 631-246-9816 to schedule a free on-site consultation. We will walk your home, discuss your goals, and give you numbers you can actually plan around.
Visit our showroom at 585 Bicycle Path, Suite 10, Port Jefferson Station, NY 11776. Meet the team. See materials in person.
We answer the phone in real time. When you call, a real person picks up. Learn what makes us different from other Long Island contractors.
Frequently Asked Questions
How much does a full gut renovation cost on Long Island?
A full-gut renovation on Long Island costs $150 to $350+ per square foot in 2026. The final price depends on your home’s condition, material selections, structural changes, and whether the project involves kitchens or bathrooms.
How long does a complete home renovation take on Long Island?
Most full home renovations take 3 to 8 months from demolition to completion. Timelines vary based on project scope, permit approvals, material lead times, and the speed at which homeowners finalize selections.
What is the most expensive room to renovate on Long Island?
The kitchen is consistently the most expensive room. On Long Island, mid-range kitchen remodels start around $35,000, while high-end custom kitchens exceed $100,000 due to upgrades in cabinetry, countertops, plumbing, and electrical systems.
Should I renovate my Long Island home or build a new one?
Renovating typically costs $150 to $350 per square foot, while new construction runs $270 to $330+. If your foundation and framing are sound, renovation usually delivers better value. A site visit is the best way to decide.
About the Author
Tom Marr has been building and renovating homes across Long Island, Manhattan, and the Hamptons for over 43 years. He is personally involved in every project, meeting clients on-site, accompanying them to tile stores and kitchen showrooms at no extra charge, and ensuring every detail meets his standards.
Uprite Plus operates an on-site showroom at 585 Bicycle Path, Suite 10, Port Jefferson Station, NY 11776.
Reach Tom directly at 631-246-9816 or email upriteplus@yahoo.com.