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  • 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
)

Serving Central Islip, NY and surrounding areas

Approved

In business since 1985

Free estimates

Warranties offered

"I first asked Jeff at Northgate to take out our old basement bathroom and build a new one 4 years ago. He did a great job for a reasonable price. He recently completed a total basement renovation and upstairs bathroom. Everything down to the studs. Again, did a wonderful job in about a month. He really deserves all the excellent reviews he has had. He always keeps you in touch and fixes any problems right away. We will be happy to have him do our kitchen soon. You will not find anyone better."
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+56

Response time7 hrs
Response rate100%
2 neighbors recently requested a quote
Avatar for JBL HOME IMPROVEMENTS INC
JBL HOME IMPROVEMENTS INC
4.6(
271
)

Serving Central Islip, NY and surrounding areas

Approved

Super Service Award Winner

In business since 2006

Free estimates

Warranties offered

"I cannot say enough about these guys. Their prices were reasonable and about average compared to other companies. The owner, Dave was great to work with, he kept us updated on a daily basis, and was there every morning to look things over and help get the guys set up. The workers were there at 7 am every day. Work was done well within the given timeframe. Everything was left clean each day. They built a bedroom in our basement, and gutted and remodeled a bathroom, we couldn’t be happier with both projects. Very professional, highly recommend."
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+23

Response time1 day
Response rate100%
6 neighbors recently requested a quote
Avatar for Arthur DeRosa Building and Remodeling
Arthur DeRosa Building and Remodeling
4.7(
13
)

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

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+20

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

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!"
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+26

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

Serving Central Islip, NY and surrounding areas

Approved

In business since 2017

Free estimates

Emergency services offered

"I used these guys for a remodeling job which included bathroom renovation, some minor electrical work, knocking down and installing new dry wall and painting. Class acts! We all hear horror stories about contractors not calling you back or not showing up on time or showing up at all. Not these guys! Hector, Moises and their crew really did exactly what they said they were going to do. Friendly, responsive and oh yea, solid work! Professional through and through! Highly recommend them and would use them again!"
before demo
kitchen demolition
demolition complete
kitchen tile job in progress
kitchen tile

+172

Response time7 hrs
Recommended by76%of homeowners
Avatar for Stars and Stripes Home Improvement LLC
Stars and Stripes Home Improvement LLC
4.8(
318
)

Serving Central Islip, NY and surrounding areas

Approved

Super Service Award Winner

In business since 2017

Free estimates

Emergency services offered

"From start to finish everything was easy. Bob walked us through a plan to completely renovate our kitchen, living room, bedrooms, basement and bathroom. Nothing had been updated since 1975 and now everything is brand new. They worked fast and efficient. Will be bringing them back in the spring for more updates on the outside of the house. Nice to have someone give you their word and then follow through even better than we imagined."
Remodeling - Kitchen & Bathroom Project
VEGA KITCHEN
Painting - Interior Project
Complete Renovation
Basement

+720

Response time4 days
10 neighbors recently requested a quote
Recommended by94%of homeowners
Avatar for Golden Ladder Construction
Golden Ladder Construction
5.0(
11
)

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%
2 neighbors recently requested a quote
Avatar for Cocos Custom Building LLC
Cocos Custom Building LLC
4.8(
8
)

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%
45 neighbors recently requested a quote
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Basement Remodel questions, answered by experts

Making a window in a basement larger costs an average of $4,200. You’ll need to pay an average of $550 to have a structural engineer plan the project, $500 to $1,500 for the installation labor, and an average of $2,200 for the excavation and window well installation. The remainder will go toward pulling permits, installing trim, and repairing drywall on the interior.

Some older homes have toilets in the basement to combat sewage backups. This type of toilet, also known as a Pittsburgh potty, acted as a safety valve over the incoming sewer line. If a line backed up, it would back up into the toilet because it was the lowest fixture in the home, keeping it out of sight and away from the finished areas of the house.

Basement toilets were also used by workers with messy jobs, like those who worked in coal mines or steel mills. This way, they could clean up and avoid tracking dirt through their home.

Anything having to do with the structure of your home, such as raising the ceiling, is usually the most expensive part of finishing a basement. Another project component that could be a surprisingly high expense is adding an exterior entrance. 

The cost of a walkout basement can be anywhere from $5,000 to $35,000.

Although homeowners often use the terms basement remodeling and basement finishing interchangeably, they are quite different terms. 

Finishing a basement is the process of taking a basement space that is not habitable and adding elements to make it usable. This includes adding plumbing, flooring, and insulation.

Remodeling a basement means taking an already existing finished basement and changing it, often by adding or removing walls, adding plumbing, or changing the existing flooring.

You should plan on waiting at least a year and ideally two to three years after construction before finishing your basement. This will give the foundation time to settle in response to the weight of your home and the expansion of the surrounding soil. You can then repair your foundation and seal any cracks as needed before finishing it to reduce your risk of future leaks or other issues.

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.