A whole-home renovation on Long Island typically runs between $150,000 and $500,000 or more, which usually works out to about $100 to $250 per square foot depending on how much you change. A cosmetic refresh that keeps the existing layout sits at the lower end; a full gut renovation that moves walls, updates systems, and finishes with high-end kitchens and baths sits at the top. The two biggest levers are the scope of structural work and the finish level you choose in the kitchen and bathrooms. Below is an honest, 2026 breakdown of what a whole-home renovation costs here, what drives the price, and how to plan for it.
What a Whole-Home Renovation Costs on Long Island in 2026
For most Long Island homes, plan on roughly $100 to $250 per square foot for a whole-home renovation, or about $150,000 to $500,000 for a typical 1,800 to 2,500 square foot house. Where you land inside that range comes down to three things: how much of the layout you change, the condition of the systems behind the walls (electrical, plumbing, HVAC), and the finish level in the rooms that cost the most to build, namely kitchens and bathrooms.
A helpful way to think about it: a light, cosmetic whole-home update (paint, flooring, fixtures, refreshed kitchen and baths) can often be done for $150,000 to $250,000, while a full gut renovation with new systems, reconfigured space, and upscale finishes commonly runs $300,000 to $500,000 and up. Older homes and waterfront or historic properties can push beyond that once code upgrades and permits are factored in.
What Drives the Price of a Whole-Home Renovation
Two renovations of the same square footage can differ by hundreds of thousands of dollars. These are the factors that move the number most:
- Kitchens and bathrooms. These are the most expensive rooms per square foot in any home. A whole-home budget is often decided by how many bathrooms you touch and how ambitious the kitchen is. See our detailed kitchen remodel cost and bathroom remodel cost guides for how those rooms price out on their own.
- Structural changes. Keeping the existing layout is the single biggest way to control cost. Removing load-bearing walls, adding square footage, raising ceilings, or reworking a staircase all add engineering, permitting, and labor.
- Systems behind the walls. Rewiring, re-piping, new HVAC, and insulation are invisible when the project is done but can account for a large share of a gut renovation, especially in homes built before the 1990s.
- Finish level. Cabinetry, countertops, tile, flooring, and lighting can be specified at builder grade or luxury, and the gap between the two across an entire house is enormous.
- Permits and location. Suffolk and Nassau County permit requirements, and the added rules in NYC, the Hamptons, and incorporated villages, affect both cost and timeline. Waterfront and historic districts add review steps.
Whole-Home Renovation Cost by Scope
Cosmetic refresh: $150,000 to $250,000
The layout stays the same. This level covers new flooring throughout, fresh paint, updated lighting and fixtures, refaced or replaced kitchen cabinets, and refreshed bathrooms. It is the fastest and most predictable path, and it delivers a dramatic visual change without touching the structure or systems.
Midrange renovation: $250,000 to $350,000
Here you reconfigure some space, replace kitchens and bathrooms outright, upgrade key systems, and choose mid to upper-tier finishes. This is the most common whole-home scope for Long Island homeowners who plan to stay in the house for years.
Full gut renovation: $350,000 to $500,000 and up
The home is taken back to the studs. New electrical, plumbing, and HVAC; reconfigured floor plan; new kitchen and baths with high-end materials; often new windows, doors, stairs, and custom millwork. This is effectively a new home inside the existing footprint, and the finish choices set the ceiling on the budget.
Is a Whole-Home Renovation Worth It on Long Island?
In most Long Island markets, yes. Housing stock here is older and land is valuable, so renovating a well-located home is frequently more cost-effective than buying new, and a thoughtful whole-home renovation protects and often increases resale value. Kitchens, bathrooms, and improved layouts return the most, while structural and system upgrades protect the home long term even when they are less visible. The key is to renovate to the level of the neighborhood rather than far above or below it.
How to Budget for Your Whole-Home Renovation
- Start with scope, not a number. Decide first whether you are refreshing, reconfiguring, or gutting, because that choice sets the range more than any single finish.
- Prioritize kitchens and baths. They cost the most and return the most, so decide their finish level early; it anchors the whole budget.
- Set aside a contingency of 10 to 15 percent. Older homes reveal surprises once walls are open, and a contingency keeps the project moving without hard choices mid-build.
- Plan for the timeline. A whole-home renovation on Long Island commonly runs 4 to 9 months end to end, and custom cabinetry and long-lead materials are usually what set the schedule.
- Work with one accountable team. A design-build firm that handles design, materials, permits, and construction under one contract keeps the budget transparent and avoids the gaps between separate designers, suppliers, and contractors.
How D&V Estimates Your Whole-Home Renovation
D&V Home Design Center gives you a clear number in stages, so you know what to expect at each step. It starts with a free consultation that includes a general estimate, so you get a realistic ballpark before committing to anything. Next is an in-home estimate with measurements and a structural evaluation, followed by a detailed written proposal that lays out line-item costs, a timeline, and the exact materials. As a design-build firm with an in-house team and a full materials showroom in East Northport, D&V handles design, cabinets, countertops, tile, stairs, permits, and construction under one roof, which keeps pricing transparent and the process accountable.
Ready to see where your project lands? Learn more about our whole-home renovation service, browse completed projects in our portfolio, visit the East Northport showroom, or read our FAQ for answers on costs, timelines, and permits. To get started, contact D&V at (631) 486-8388.
Whole-Home Renovation Cost FAQs
How much does a whole-home renovation cost on Long Island?
Most whole-home renovations on Long Island cost between $150,000 and $500,000, or roughly $100 to $250 per square foot. A cosmetic refresh that keeps the layout is at the lower end, while a full gut renovation with new systems and upscale finishes is at the upper end.
What is the most expensive part of a whole-home renovation?
Kitchens and bathrooms are the most expensive rooms per square foot, so they usually drive the budget. After that, structural changes and updating the systems behind the walls (electrical, plumbing, and HVAC) add the most cost, especially in older homes.
How long does a whole-home renovation take on Long Island?
A whole-home renovation typically takes 4 to 9 months from start to finish. The exact timeline depends on the scope of structural work, permit approvals, and lead times on custom cabinetry and materials.
Is it cheaper to renovate or buy a new home on Long Island?
Because Long Island land is valuable and much of the housing stock is older, renovating a well-located home is often more cost-effective than buying new, and it lets you tailor the home exactly to how you live. The right choice depends on the home’s condition, your location, and how much you want to change.
Do I need permits for a whole-home renovation?
Yes. Whole-home renovations on Long Island require permits, and the specifics vary by jurisdiction across Suffolk County, Nassau County, NYC, and the Hamptons. As a design-build firm, D&V handles the permitting as part of the project.
How do I get a whole-home renovation estimate from D&V?
Start with a free consultation for a general estimate, then schedule an in-home visit for measurements and a structural evaluation. D&V follows with a detailed written proposal covering line-item costs, timeline, and materials. Call (631) 486-8388 or visit the East Northport showroom to begin.