Top-rated basement remodelers.

Get matched with top basement remodelers in Central Islip, NY

Enter your zip and get matched with up to 5 pros

Need a pro for your basement remodel project in Central Islip, NY?

Select your specific project to find the pro for you.

TRUSTED BY CENTRAL ISLIP, NY HOMEOWNERS

  • Average homeowner rating star icon4.7
    Average homeowner rating
  • Verified reviews icon53
    Verified basement remodels reviews

Find Basement remodelers in Central Islip

Avatar for Northgate Home Improvement Corp.
Northgate Home Improvement Corp.
4.9(
93
)
Basement - Remodel

Serving Central Islip, NY and surrounding areas

Approved

In business since 1985

Free estimates

Warranties offered

"Jeff did a great job on our complete basement bathroom remodel last December so we asked him to do a small job of installing a vanity. The job was done quickly and efficiently. The price was reasonable. Everything was cleaned up. I highly recommend Northgate Home Improvement and will gladly hire them in the future."
Additional Photos
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+56

Response time7 hrs
Response rate100%
2 neighbors recently requested a quote
Avatar for Arthur DeRosa Building and Remodeling
Arthur DeRosa Building and Remodeling
4.7(
13
)
Basement - Remodel

Serving Central Islip, NY and surrounding areas

Approved

In business since 1986

Free estimates

Customers say: True professional

We are a building, remodeling, home improvement firm backed with 31 yrs experience. I, Arthur DeRosa, personally over see every project, big or small, from start to finish. I have an artists soul and every project that I am privileged to do is a reflection of that. With performance backed by experience and attention to detail, your project will be in good hands. The number of employees varies depending on work load. Sub-contractors are used when necessary. Proposals and estimates are free and include payment schedules with start and completion dates. Super Service Award winner for 2016! Call us today to schedule your appointment - (631) 774-1231

Additional Photos
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+20

Response time2 days
5 neighbors recently requested a quote
Recommended by100%of homeowners
Avatar for Alta Renovations Corp
Alta Renovations Corp
5.0(
28
)
Basement - Remodel

Serving Central Islip, NY and surrounding areas

Approved

Super Service Award Winner

In business since 2019

Free estimates

Warranties offered

"Would definitely recommend Alta Renovations Corp, they are so professional and I am completely satisfied with their work! I would definitely use them again for any home remodeling!"
Additional Photos
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+26

Response time8 hrs
12 neighbors recently requested a quote
Recommended by85%of homeowners
Avatar for BuildingLI.com - BLI Facilities LLC
BuildingLI.com - BLI Facilities LLC
5.0(
32
)
Basement - Remodel

Serving Central Islip, NY and surrounding areas

Approved

In business since 2017

Free estimates

Emergency services offered

"I hired Long Island handyman construction group to remodel a 400sf basement and bathroom in Melville. They were priced in the middle compared to other bids. I picked them thanks to their out of the box advice which saved me thousands of dollars. There was one problem with the plumbing which cost an extra 1800 dollars. The owner settled with me 50/50 even though it was a pre-existing issue. The project was started early and completed early. All mess was cleaned up and the crew was very friendly and fully aware. Very reputable guys and very easy to deal with. Thanks Moises and Eddy."
before demo
kitchen demolition
demolition complete
kitchen tile job in progress
kitchen tile

+172

Response time7 hrs
Recommended by76%of homeowners
Avatar for Golden Ladder Construction
Golden Ladder Construction
5.0(
11
)
Basement - Remodel

Serving Central Islip, NY and surrounding areas

Approved

Super Service Award Winner

In business since 2013

Free estimates

Warranties offered

"Joe worked at our home a few times. He remodeled an All Season Sunroom, worked creatively with cedar planking, installed an electric fireplace, built a new pantry, installed flooring, installed new dry wall kitchen and in bathroom, etc. etc. We are so happy we chose Joe to work in our home. Above all he is conscientious, trustworthy, gives a fair price and does a great job!"
Custom Cabinetry
LED mirror
Custom Vanity
Niche & Bench
Multifunctional

+53

Response time1 hour
Response rate93%
1 neighbors recently requested a quote
Avatar for Cocos Custom Building LLC
Cocos Custom Building LLC
4.8(
8
)
Basement - Remodel

Serving Central Islip, NY and surrounding areas

Approved

Super Service Award Winner

In business since 2023

Free estimates

Warranties offered

"We've never had luck with major home modifications—this was smooth sailing the entire way. Our project was a teardown and complete re-side, and Cocos did a fantastic job. We have a tricky home with a lot of angles that make no sense—Cocos did a brilliant job strategizing how everything should be executed, and the 50-year-old home looks brand new. Danielle, Keith and Matt not only executed at the highest level, they stayed in communication literally every day to make sure there were no surprises and that we were happy with the progress. If you're looking for a home siding partner, don't hesitate to hire Cocos. They were top notch and we are very happy/"
Exterior Remodel
Modular Set And Exterior Finish Project
Exterior Remodel
Modular Set And Exterior Finish Project
Exterior Remodel

+31

Response time12 hrs
Response rate100%
43 neighbors recently requested a quote
...
Showing 1-10 of 540
Basement Remodel questions, answered by experts

Adding an extension or addition to your home costs more than a loft conversion in all but the rarest cases where the home's structural integrity is lacking. Because a home addition requires a new foundation section or significant structural upgrades to handle a cantilevered portion, the cost compared to almost any loft conversion is significantly greater for the same square footage.

Yes, most general contractors require an initial down payment, typically between 10% and 25% of the total project cost. This upfront payment helps cover the costs of materials, permits, and subcontractors. The remaining project costs are usually billed after specific project milestones are reached or on set completion dates, as outlined in your contract. Be wary of contractors who require a significant deposit of 50% or more upfront, as this could be a red flag for a scam.

Yes, most general contractors require an initial down payment. A reasonable deposit is typically between 10% and 25% of the total project cost, although this can vary by project size and location. This upfront payment helps the contractor cover initial costs like materials, permits, licensing, and hiring subcontractors. The remaining balance is usually billed according to a schedule outlined in your contract, often tied to project milestones or completion dates. Be cautious of contractors who ask for a large deposit of 50% or more, as this could be a red flag for a scam.

Envision the type of bar experience you'd like to create for your guests. For example:

  • Does your basement have enough finished space for bar stools or seating?

  • What type of additional lighting would set the tone for the room?

  • Are there basement windows or an HVAC system?

  • Do you need new plumbing in your basement for a proper wet bar?

  • Could you be happy with a built-in wall cabinet bar rather than a full-scale wet bar?

Walkout basements are not generally included in a home’s square footage, although they may be if they meet certain conditions that depend on local regulations. A finished walkout basement used as a living space may be counted toward square footage in some locations as long as all codes for livable space are met.

The Central Islip, NY homeowners’ guide to basement remodels

From average costs to expert advice, get all the answers you need to get your job done.