Hear from Our Customers
You’re looking at your basement and seeing wasted square footage. Maybe it’s damp, unfinished, or just full of stuff you don’t use. Meanwhile, your family needs a home office, a playroom, or space for aging parents—and moving isn’t realistic with Smithtown’s median home prices pushing past $578,000.
Finishing your basement gives you 500 to 1,000+ square feet of living space at a fraction of what an addition costs. You’re looking at $98 to $135 per square foot versus $200+ for building out. That’s real money saved while adding real value—most finished basements return 70-75% of the investment when you sell.
But here’s what matters more than ROI: you get the space your family actually needs without uprooting your life. A quiet place to work from home. A rec room where the kids can be loud. A comfortable suite for extended family. Whatever you’re missing upstairs, you can build downstairs—if it’s done right.
We’ve been finishing basements across Suffolk County for nearly a decade. That means we know the building codes, the permit process, and the moisture challenges that come with living on an island with a high water table.
We’re licensed to work in Nassau and Suffolk counties. We carry full insurance. We use in-house crews—no subcontractors who disappear halfway through your job. And we back our work with a one-year warranty on craftsmanship, because we’re still here when you need us.
You’ll work with the same team from estimate to final walkthrough. No sales pressure, no hidden fees, no surprises. Just honest pricing and straight answers about what your basement needs—and what it doesn’t.
First, we come to your home in Smithtown and look at what you’re working with. We check for moisture issues, measure ceiling heights, and talk about what you want the space to become. Then we give you a fixed price—no ballpark, no “it depends.” You know what you’re paying before we start.
Once you’re ready to move forward, we handle the permits with Suffolk County’s building department. That includes the $0.23 per square foot filing fee and the $450 review fee—we take care of the paperwork so you don’t have to figure out egress window requirements or minimum ceiling heights on your own.
Then our crew gets to work. We address any moisture concerns first—vapor barriers, waterproofing, sump pump prep if needed. Then framing, electrical, insulation, drywall, flooring. Most open-plan basements take 4 to 6 weeks depending on size and complexity. Throughout the job, you’re talking to the same people doing the work. No middlemen, no confusion about what’s happening next.
Ready to get started?
A finished basement in Smithtown isn’t just drywall and carpet. It’s a code-compliant living space that meets Suffolk County’s requirements—7-foot minimum ceiling height, proper egress windows for bedrooms, adequate ventilation, and electrical work that passes inspection.
You’re also getting moisture protection that addresses Long Island’s unique challenges. The soil here gets saturated from the high water table, which creates hydrostatic pressure against your foundation. That’s not something you deal with on the mainland. We install vapor barriers, seal concrete, and prep for drainage systems so your finished space doesn’t turn into a mold problem two years later.
And because Suffolk County reassesses finished basements at about $30 to $40 per square foot of added value, you’re looking at a real increase in your home’s worth. A 600-square-foot finished basement could add $18,000 to $24,000 to your property value—while giving you space you’ll actually use every day. That’s the difference between a basement remodel and just covering up concrete.
Most basement finishing projects in Suffolk County run between $98 and $135 per square foot for standard work. That means a 600-square-foot basement costs roughly $58,800 to $81,000, and a 1,000-square-foot space runs $98,000 to $135,000.
Those numbers include framing, insulation, drywall, flooring, electrical, and basic finishes. They don’t include high-end custom work like wet bars, full bathrooms, or luxury materials. If you need serious waterproofing or structural repairs, that’s separate—but we’ll tell you that upfront, not after we’ve already started.
The price per square foot for finishing a basement is still the best value in remodeling. You’re adding livable space for half the cost of building an addition, and you’re working with square footage that’s already under your roof.
Yes. Any basement finishing work in Smithtown requires a permit from Suffolk County’s building department. That includes framing, electrical, plumbing, and anything that changes the use of the space.
The permit process exists for good reasons—it ensures your basement meets safety codes like egress window requirements, proper ceiling heights, and adequate ventilation. If you skip permits and something goes wrong, your homeowner’s insurance might not cover it. And when you sell, unpermitted work can kill a deal or force you to rip everything out.
We handle the permit application, the filing fees, and the inspections. You don’t need to figure out Suffolk County’s requirements or take time off work to meet with inspectors. We deal with the building department so you don’t have to.
Most basement finishing projects take 4 to 6 weeks for open floor plans without major complications. If you’re adding a bathroom, multiple rooms, or dealing with moisture issues, expect 8 to 10 weeks.
The timeline depends on the size of your basement, how much demo is needed, and how quickly permits get approved. Suffolk County’s building department usually processes permits within a couple weeks, but that can vary depending on their workload.
We’ll give you a realistic timeline before we start, and we’ll tell you if something’s going to push the schedule back. Most delays come from homeowners changing their mind mid-project or discovering issues behind old walls—not from our crew dragging their feet.
Ignoring moisture problems. You can’t just frame over damp concrete and hope it works out. Long Island’s high water table and humid climate create conditions where moisture seeps through foundations, especially after heavy rain.
If you finish a basement without addressing moisture, you’re building a perfect environment for mold. It grows behind walls where you can’t see it, affects your indoor air quality, and eventually destroys your finishes. Then you’re paying to rip everything out and start over—except now you’re also paying for mold remediation.
The right approach is to waterproof first, then build. That means vapor barriers, sealed concrete, proper drainage, and dehumidification if needed. It costs more upfront, but it’s a fraction of what you’ll spend fixing a moldy basement later.
Yes, but not as much as you might think. Suffolk County reassesses finished basements at about $30 to $40 per square foot of added value. So if you finish a 600-square-foot basement, your home’s assessed value goes up by roughly $18,000 to $24,000.
Your property taxes are based on that assessed value, so you’ll see an increase—but it’s proportional to the value you’ve added. And when you sell, that finished basement makes your home more marketable and more valuable to buyers. Everyone’s looking for more space, and a finished basement delivers without the cost of an addition.
The tax increase is also predictable. We can’t tell you the exact dollar amount because it depends on your current assessment and mill rate, but your town assessor’s office can give you an estimate before you commit to the project.
Not every basement is a good candidate for finishing. If your ceiling height is below 7 feet, Suffolk County won’t approve it as livable space. If you have ongoing water intrusion or serious foundation cracks, you need to fix those problems before you finish anything.
But most basements in Smithtown can be finished if the moisture issues are addressed properly. Even if you have some water seepage, that’s fixable with the right waterproofing and drainage systems. The question is whether the cost makes sense for your situation.
If your basement floods every time it rains, you might be looking at $10,000+ in waterproofing before we even start finishing. That’s still cheaper than moving or adding on, but it’s something to know upfront. We’ll walk your basement with you and tell you honestly whether finishing makes sense—or if you’re better off spending your money elsewhere.
Local Resources
Useful Links
