Top-rated basement remodelers.

Get matched with top basement remodelers in Syosset, NY

Enter your zip and get matched with up to 3 pros

Matching on HomeAdvisor

Share some details icon
Share some details about your home project.
Match with local pros icon
Within moments, match with highly-rated local pros.
Compare quotes icon
Compare quotes and choose the best pro for the job.

Find Basement remodelers in Syosset

Monterroso Design & Improvement, Inc
5.0(
30
)

Serving Syosset, NY and surrounding areas

Approved

In business since 1981

Free estimates

Credit card accepted

"Daniel and his team (Ricardo and Miguel) are awesome. The knowledge and thoughtfulness of each feature, the combination of design elements and finishing touches is exceptional. And patience. We ask lots of questions and ask for an adjustment here or there and every time it was done with a smile and not a problem. Talking through the practicality, functionality and aesthetics of each feature how they work together and listening to recommendations from Daniel made a big difference in the final outcome. From cabinet size, to vanity, to mirror placement, shower niche size and location, to custom board and baton height and finish. His knowledge and his teams execution are a great combination. We look forward to working with Monterroso again and have recommended them to others."
Response time11 hrs
Response rate94%
3 neighbors recently requested a quote
Avatar for Robert's Remodeling Professionals, Inc.
Robert's Remodeling Professionals, Inc.
5.0(
34
)

Serving Syosset, NY and surrounding areas

Approved

In business since 1989

Free estimates

Customers say: Quick response

"Robert is a trustworthy and skilled professional. Our family has engaged his services on multiple occasions -- most recently to install flooring in our basement -- and plan to do so in the future for additional remodeling work. Robert and team are reliable and perform great work (at a great value)."
Work
2 neighbors recently requested a quote
Recommended by94%of homeowners
Avatar for A.S.M. Home Improvements
A.S.M. Home Improvements
5.0(
11
)

Serving Syosset, NY and surrounding areas

Approved

In business since 2021

Free estimates

Credit card accepted

"The bathroom remodel was done beautifully. Anthony & his crew were very professional. Arrived on time everyday & put in a full day. I noticed he even was concerned about making sure everything was clean when leaving each day. His price was reasonable & we are going hire him again."
Remodeling
Remodeling
Remodeling
Remodeling
2 of 2
fire pit

+48

Response time11 hrs
6 neighbors recently requested a quote
Recommended by63%of homeowners
Avatar for LI Developers, LLC
LI Developers, LLC
4.9(
136
)

Serving Syosset, NY and surrounding areas

Approved

In business since 2002

Free estimates

Credit card accepted

"I hired Jakob and LI developers to remodel my Kitchen and first floor bathroom. Jakob was attentive to my wishes and very detail oriented. His crew showed up everyday ready to work and the time of the turn around was great as I still needed to live in the house. Beautiful work and Jakob was always there either over the phone or in person when I needed anything. Great outcome overall highly recommend."
Contemporary Kitchen
Livingroom & Dining room
Master Bathroom
Full Bath
LiD 500

+5

Response time1 day
2 neighbors recently requested a quote
Recommended by83%of homeowners
Avatar for BuildingLI.com - BLI Facilities LLC
BuildingLI.com - BLI Facilities LLC
5.0(
25
)

Serving Syosset, 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

+168

Response time7 hrs
Recommended by76%of homeowners
Avatar for Northgate Home Improvement Corp.
Northgate Home Improvement Corp.
5.0(
83
)

Serving Syosset, 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
7 neighbors recently requested a quote
Recommended by98%of homeowners
Avatar for Greg Home Improvement, Inc.
Greg Home Improvement, Inc.
4.8(
80
)

Serving Syosset, NY and surrounding areas

Approved

In business since 1997

Free estimates

Warranties offered

"Hired Greg for a full gut and remodel of a bathroom. Greg was very competent, personable, and took the time to understand exactly what we wanted. He made us feel like we were in good hands. He took the time to make sure things were done the right way. The result was top notch, couldn't have asked for more. I would definitely use this company again!"
LIVING/DINING/KITCHEN IN PROGRESS
LIVING/DINING/KITCHEN IN PROGRESS
LIVING/DINING/KITCHEN IN PROGRESS
LIVING/DINING/KITCHEN IN PROGRESS
LIVING/DINING/KITCHEN IN PROGRESS

+101

Recommended by96%of homeowners
Avatar for HD Renovations
HD Renovations
4.7(
101
)

Serving Syosset, NY and surrounding areas

Approved

In business since 2010

Free estimates

Emergency services offered

"Dominick was fantastic. He responded to me super quickly, came out for a quote and a week later the work was done. He worked very fast and gave a reasonable quote. He removed a cabinet in the kitchen so we’ll he was able to reassemble it. He cleaned up nicely after the work was done, even mopped the floors! I will definitely be working with him again for future projects."
Kitchen and Bath Remodeling Project
Bathroom renovation
Accessible shower two days
Complete demo of existing shower or bathtub area completed in two days.
Bathroom and kitchen remodel

+94

Response time1 day
2 neighbors recently requested a quote
Recommended by93%of homeowners
...
Showing 1-10 of 1910
FAQs for basement remodeling projects in Syosset, NY

Finishing a basement turns unused square footage into livable space and returns up to 70% of what you spend when you sell your home. Beyond that resale boost, you gain a playroom, home office, or guest suite you can start enjoying right away. That mix of daily comfort and solid return on investment (ROI) makes basement finishing one of the smartest upgrades you can tackle.

In some parts of the country—especially lots on swamps, high water tables, or other wetlands—local codes prohibit basements. Saturated soil puts constant pressure on foundation walls and lets water seep in faster than any sump pump can handle. 

If your property sits on waterlogged ground, building on a slab or crawl space is often safer, more affordable, and code-compliant.

Most basements wrap up in four to eight weeks. Framing takes three to five days, with electrical and plumbing rough-ins following over the next week. Add five days for drywall, two to three for flooring, and another week for paint, trim, and punch-list items. 

Delays can happen if materials run late or your contractor’s calendar is packed, so build in a little cushion when you plan.

Whether a finished basement counts toward your home’s official square footage depends on local rules. Many areas only include below-grade space if it has code-approved egress, fully finished walls, ceilings, and floors, plus consistent heating. 

Check with your local assessor or building department before you start; meeting those standards can affect taxes, appraisals, and resale value.

Building codes require a checklist: dedicated heat and electrical service, a code-approved stairway, and at least one egress window or exterior door. Walls, ceilings, and floors must be fully finished and meet insulation, ventilation, and fire-separation standards. If you add a bedroom, you’ll also need a closet, proper clearances, and safe exits. If you change the layout later, be ready to update the space so every new room still meets today’s code.

The Syosset, NY homeowners’ guide to basement remodelings

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