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Finishing a Basement on Long Island

Basements we've taken from bare concrete and open studs to finished rooms in Oceanside, Freeport, Port Washington and New Hyde Park, plus who gets the permit in Nassau and Suffolk.

By Class Remodeling · Published

Before and after of an Oceanside, NY basement: open studs and bare concrete finished with walls, a door and a light grey vinyl plank floor
Oceanside: open studs and concrete to a finished room.

The Oceanside basement was open studs and bare concrete. Now it has finished walls, a door, recessed lights and a light gray vinyl plank floor. We’ve also redone basement stairs in Oceanside. The carpet came off, and the stairs got wood treads and painted risers.

John’s Google review calls his job “our third bath remodel with Class Remodeling, this time in our basement.” He also had us “install brand new vinyl flooring in our basement.”

Basements we’ve finished

In Freeport it was a bare floor and block walls. We boxed in the support column and put down vinyl plank. The unfinished utility area next to it got white walls, doors and a gray vinyl plank floor.

Port Washington was bare concrete and open studs again. It’s a finished room now, vinyl plank underfoot, and the walls are orange and blue.

Before and after of a Freeport, NY basement: bare floor and block walls finished, with the support column boxed in and a vinyl plank floor

Vincent’s Levittown renovation had a basement in it, along with a kitchen and two bathrooms. “Their warehouse is huge and they have so much inventory in stock,” he wrote in a Google review.

New Hyde Park was unfinished before. We finished it with a dark walnut-look floor and new doors, and the utility area beside the boiler got the same dark plank.

Dix Hills was a floor job in a basement. The light tile came up and a glossy blue-gray marble-look porcelain floor went down.

Damp basements and the rest

If you need it, we can help with a damp basement, egress, a low ceiling, or a bathroom or kitchen downstairs.

Gerald’s basement got wood-look tile “after it was flooded.” His Google review says we “cleaned-up any potential mold” and “sprayed the floor area,” and “The basement floors turned out very nicely.”

Our own crew does the work. Plumbing and electric go to licensed contractors.

Who gets the permit

On Long Island, permits come from your local building department, not the county consumer affairs office. Suffolk County’s fact sheet tells homeowners to “check with your local building and codes office before beginning a project.” In the Town of Hempstead, the Building Department enforces the building, plumbing, electrical and housing codes and runs an online permit center.

Who is responsible for getting it depends on the county.

Suffolk tells homeowners: “As the owner, you are responsible for either getting the permits or seeing that the contractor gets them; provided your contract states the contractor is responsible.” Nassau tells contractors that even if they don’t pull the permits themselves, they “must be sure that all proper permits have been obtained” before starting work.

Whichever way it goes, put it in the contract.

Getting started

It starts with a phone call, to make sure it’s a good fit on both sides, and the estimate over the phone is free. We can also estimate from photos and video. The showroom in Levittown is open for walk-ins Monday to Saturday, 9 AM to 6 PM, and Sunday, 11 AM to 4 PM. Bring your pics, videos and wishlist, and pick your floor and finishes there. Your price comes from the scope and what you select.

Call 516-579-5879. Come check it out for yourself.

Every photo here is from a Class Remodeling job. Not legal advice. We checked the agencies’ pages on October 6, 2026; the links below have the current versions.

Sources

Related: Before You Sign a Remodeling Contract on Long Island or in NYC · Long Island Staircases We've Redone, Before and After · Planning a Full-Home Remodel on Long Island: What to Decide, and in What Order

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