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Find Basement remodelers in Smithtown

Avatar for Northgate Home Improvement Corp.
Northgate Home Improvement Corp.
5.0(
82
)

Serving Smithtown, NY and surrounding areas

Angi Approved

In business since 1985

Free estimates

Warranties offered

"I have had Jeff and his guys renovate my ranch house in Melville. He has done 2 bathrooms, my basement and my kitchen. He has always been reliable and done great work. The house looks like new. He quickly corrects any problems and is always in touch. He and his guys are friendly and neat. His estimates are reasonable. I strongly recommend Northgate Home Improvement."
Additional Photos
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+56

Response time7 hrs
13 neighbors recently requested a quote
Recommended by100%of homeowners
Avatar for Stars and Stripes Home Improvement LLC
Stars and Stripes Home Improvement LLC
4.9(
265
)

Serving Smithtown, NY and surrounding areas

Angi Approved

Super Service Award Winner

In business since 2017

Free estimates

Emergency services offered

"We hired Stars and Stripes for a few projects around our home. The main one was our kitchen re-model. The project was done professionally, beautifully, and ON TIME! We would definitely recommend (and continue to use) Stars and Stripes. I?ve attached some before and after pics to see their work. "
Remodeling - Kitchen & Bathroom Project
VEGA KITCHEN
Painting - Interior Project
Complete Renovation
Basement

+699

Response time3 days
13 neighbors recently requested a quote
Recommended by96%of homeowners
Avatar for JBL HOME IMPROVEMENTS INC
JBL HOME IMPROVEMENTS INC
4.9(
227
)

Serving Smithtown, NY and surrounding areas

Angi Approved

Super Service Award Winner

In business since 2006

Free estimates

Warranties offered

"Dave strive for excellence in all his work projects. He and his crew are professional, always show up to the job on-time and his work meets and surpassed our expectations. His price is not the cheapest but if you want a good quality job, look no further."
Additional Photos
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+23

Response time1 day
Response rate89%
16 neighbors recently requested a quote
Avatar for HM Construction Group, Inc. (Long Island Handyman Group)
HM Construction Group, Inc. (Long Island Handyman Group)
5.0(
21
)

Serving Smithtown, NY and surrounding areas

Angi Approved

In business since 2017

Free estimates

Emergency services offered

"Eddie was great to work with! We had a limited time frame to adhere to town inspections and Eddie and his team knew exactly what we needed and quickly got the job done. The results were great and even the inspector acknowledged the impressive repair. They were able to put a knocked out garage wall back on the foundation and repair the interior dry wall. I would recommend this company for any professional contract work due to their reasonable price, ease to work with and quality of work."
Recommended by90%of homeowners
Monterroso Design & Improvement, Inc
5.0(
30
)

Serving Smithtown, NY and surrounding areas

Angi 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%
1 neighbors recently requested a quote
Avatar for DC The GC Inc.
DC The GC Inc.
5.0(
20
)

Serving Smithtown, NY and surrounding areas

Angi Approved

In business since 2022

Free estimates

Credit card accepted

"Great work- timely communication and he explained everything in detail - he gave us a lot of options and are very happy with the quality of the work - FLOORS LOOK AMAZING! plan to do more in the future ! I would recommend DC the GC to anyone."
Basement Remodel
After
After
Basement Remodel
After

+54

Response time3 hrs
Response rate93%
1 neighbors recently requested a quote
Avatar for Gus Anax Home Improvements, Inc.
Gus Anax Home Improvements, Inc.
5.0(
18
)

Serving Smithtown, NY and surrounding areas

Angi Approved

In business since 1998

Free estimates

Small jobs welcome

"contacted Gus for recent roof leak; he was here the same day. He first went into attic space (while there he replaced a burned-out light bulb) to check location of leak, took photos, had me view them; then went on the roof. He located popped nails, which he removed and sealed. Took photo of that as well as surrounding area which he also sealed with a product called, through the roof. He came down and told me the roof vent required a cap and said he would return to install it. Once he installed cap, he also took the opportunity to blow the leaves from the gutter. Once on the ground, he proceeded to blow leaves and debris from front and back walkways."
Kings Park
Babylon
East Northport
Miller Place
Massapequa

+17

Response time10 mins
Recommended by94%of homeowners
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FAQs for basement remodeling projects in Smithtown, 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 Smithtown, NY homeowners’ guide to basement remodelings

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