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Find Basement remodelers in Nassau

Regeneration Contracting, LTD
4.6(
20
)
Basement - Remodel

Serving Nassau, NY and surrounding areas

Approved

In business since 2015

Free estimates

Customers say: Quality work

"Derek Seiger was an absolute joy to work with! Not only was he reliable (showing up as promised), but the quality of his work is exceptional. He was pleasant and efficient and I would recommend him to anyone interested in good work done in a timely and professional manner."
Cabin
Kitchen and Cabinets
Bathrooms
Decks and Steps
Bathroom

+96

Response time1 day
4 neighbors recently requested a quote
Recommended by100%of homeowners
Avatar for Artie's Home Maintenance and Property Services
Artie's Home Maintenance and Property Services
4.5(
42
)
Basement - Remodel

Serving Nassau, NY and surrounding areas

Approved

Super Service Award Winner

In business since 2010

Free estimates

Emergency services offered

"Artie was exceptionally professional and knowledgeable in a vast array of services. Artie worked for me for over 7 years preforming tasks that varied from converting a small shed to a luxury air bnb, remodeling apartment buildings, restructuring and replacing a large porch, installing washer and dryers as well as dishwashers, and various small home projects. Artie was always punctual and reliable. He completed all jobs in a timely and effective manner. He also fixed projects that were done improperly by other contractors. I also found him to be cost effective in every way. Saving myself time, money, and energy upon every job that I hired him for. Artie still works for me to this day. Heâ s my go to for just about anything and everything!"
Response time8 hrs
3 neighbors recently requested a quote
Recommended by74%of homeowners
Bowen Ridge Construction
5.0(
8
)
Basement - Remodel

Serving Nassau, NY and surrounding areas

Approved

In business since 2016

Free estimates

Warranties offered

"As someone building a second home in Vt., everything needed to be done from a 235 mile distance. This can feel a little scary. My experience w/ Joe was Outstanding!!! Joe approaches all his tasks whether it be contract work or time & material work w/ the same set of ethics. Get it done in a timely fashion, be fair, communicate clearly, take regular pics, send via text for approval or comment, & offer advice through his experience as a seasoned builder. If you are lucky enough to work w/ Joe, enjoy the experience, your in good hands. Bill Giglio from Ct."
Remodeling - Kitchen & Bathroom Project
Remodeling - Kitchen & Bathroom Project
Remodeling - Kitchen & Bathroom Project
Remodeling - Kitchen & Bathroom Project
Remodeling - Kitchen & Bathroom Project

+106

3 neighbors recently requested a quote
Recommended by100%of homeowners
Evolution Power and Development
4.8(
26
)
Basement - Remodel

Serving Nassau, NY and surrounding areas

Approved

Super Service Award Winner

In business since 2019

Offers commercial services

Customers say: Quick response

"Jesse did a great job installing the under cabinet lighting I got my wife as a present. He installed the new LED under kitchen cabinet lights which included installtion of the low voltage transformer/converter and light switch/dimmer. His experience was evident with his selection of dimmer switch location and optimum running of wiring to cover both sides of the kitchen cabinets."
Response time9 hrs
Response rate97%
41 neighbors recently requested a quote
Ross Contracting Corporation
4.6(
13
)
Basement - Remodel

Serving Nassau, NY and surrounding areas

Approved

In business since 2005

Free estimates

Warranties offered

"I would recommend Ross Contracting for all your home remodeling needs as well as new projects you would like to have done at your residence. They were thorough and have excellent work ethic. There estimate was exactly what I paid, without any hidden fees. As well as being very reasonable. They are local and I will use them again for any future projects."
Swanstone Bathroom
 New home
Swanstone Bathroom
 Common ash flooring 5" wide
Swanstone Bathroom

+5

Recommended by100%of homeowners
Avatar for Gooshaw Construction Services
Gooshaw Construction Services
5.0(
9
)
Basement - Remodel

Serving Nassau, NY and surrounding areas

Approved

In business since 2021

Free estimates

Warranties offered

"I had several projects I needed completed. Gooshaw Construction responded to my Anji inquiry regarding a bathroom remodel. We made appt. within days to meet and explain what I wanted. They showed up exactly as set up and listened to exactly what I wanted. Long story short bathroom remodel, kitchen and foyer upgrade, new fencing, deck powered washed and painted later I can whole heartedly endorse Gooshaw Construction. At each stage i was presented with a complete quote including pricing and timeline. In all phases they completely followed as agreed and with an eye for detail and integrity. I highly recommend."
Response time2 days
Response rate89%
Recommended by77%of homeowners
Avatar for Advanced Energy Adviser's
Advanced Energy Adviser's
4.1(
11
)
Basement - Remodel

Serving Nassau, NY and surrounding areas

Approved

In business since 2014

Free estimates

Warranties offered

"THESE GUYS ARE AMAZING! Our new porch looks perfect!!!! They got back to us very quickly, and after we agreed on the project spec's amd pricing they got right to work. Our old porch was down and our new one was up in just a little over a week. They were even able to repair our leaky side roof! These guys were friendly, professional and very neat. They also offered us financing options which was to have. I would recommend these guys to anyone looking to have some home improvements done! We will totally be using them again!!!"
Response time2 days
Recommended by90%of homeowners
Avatar for Stoney Brook R&D LLC
Stoney Brook R&D LLC
4.7(
17
)
Basement - Remodel

Serving Nassau, NY and surrounding areas

In business since 1990

Free estimates

Emergency services offered

"The project went really well. The builder communicated clearly at each step of the way and was open to substitutions. We opted for a different brand of decking besides what they usually use and our requests were nicely accommodated. The workers came when they said they would and completed the project on-time and left our property as they found it. The porch and deck look awesome! I would highly recommend this builder for decking projects. We are very satisfied."
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+59

Recommended by94%of homeowners
Avatar for T & T Construction
T & T Construction
4.8(
15
)
Basement - Remodel

Serving Nassau, NY and surrounding areas

In business since 2002

Free estimates

Emergency services offered

"Dave and a co-worker came out the day I called.  It was a rainy afternoon and I had a huge hole in the roof of my camp.  They were willing to fix it that night but a family was renting the camp.  So Dave came out early the next day and had it completed by 10 a.m.  The roof problem caused a problem in the bathroom ceiling which he then came out and fixed a few days later.  He was completely professional, prompt and very, very helpful.
"
Additional Photos
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Additional Photos

+2

Recommended by91%of homeowners
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FAQs for basement remodeling projects in Nassau, 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 Nassau, NY homeowners’ guide to basement remodelings

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