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Find Basement remodelers in Ronkonkoma

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

Serving Ronkonkoma, 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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Additional Photos
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Additional Photos

+56

Response time7 hrs
14 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 Ronkonkoma, 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 Pristine East End Contracting
Pristine East End Contracting
5.0(
72
)

Serving Ronkonkoma, NY and surrounding areas

Angi Approved

In business since 2006

Free estimates

Credit card accepted

"My experience with Nick was A++ from start to finish. When we first met, he took the time to understand my project and needs and to review options. He clearly cared a lot about his work and creating a special space for my family to enjoy in our home. His prices were reasonable (I got several estimates) and he stuck perfectly to the budget we agreed to. The finished product is even more beautiful than I had envisioned, it’s perfectly finished and created a great usable space in our home. 100% would recommend Nick for any and all construction work! "
Project Photos
Recommended by97%of homeowners
Avatar for JBL HOME IMPROVEMENTS INC
JBL HOME IMPROVEMENTS INC
4.9(
227
)

Serving Ronkonkoma, 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
Additional Photos
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Additional Photos

+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 Ronkonkoma, 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
Avatar for DC The GC Inc.
DC The GC Inc.
5.0(
20
)

Serving Ronkonkoma, 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 Unique Interior Finishes
Unique Interior Finishes
4.8(
31
)

Serving Ronkonkoma, NY and surrounding areas

Angi Approved

Super Service Award Winner

In business since 2000

Free estimates

Customers say: True professional

"Bob did an absolutely fantastic job. The man was a professional from beginning to end of the project . He had a vision and he made it happen . My basement has been transformed top to bottom and I could not be happier with the work . Bob gave a fair price and finished the project incredibly fast . I would highly recommend him to anyone looking to do a project in their home . My basement could not look any better "
Monica`s basement
monica`s basement
monica`s basement
Monica`s basement
Monica`s basement

+26

Response time12 hrs
Response rate94%
16 neighbors recently requested a quote
Avatar for VP Quality Contracting
VP Quality Contracting
4.9(
58
)

Serving Ronkonkoma, NY and surrounding areas

Angi Approved

In business since 2008

Free estimates

Emergency services offered

"Vinny and his work crew were very reliable the timeline for the project was perfect there workmanship is beyond what I expected I absolutely love my new bathroom I'm currently looking into redoing my kitchen and I will only use VP Quality contracting I highly recommend this company"
New Door
New Door
Old Door
Old Door
Old Bathroom

+26

Response time9 hrs
Response rate93%
Recommended by91%of homeowners
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FAQs for basement remodeling projects in Ronkonkoma, 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 Ronkonkoma, NY homeowners’ guide to basement remodelings

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