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Find Basement remodelers in West Islip

Avatar for Stars and Stripes Home Improvement LLC
Stars and Stripes Home Improvement LLC
4.9(
265
)

Serving West Islip, 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
12 neighbors recently requested a quote
Recommended by96%of homeowners
Avatar for All Precision Home Improvement, Inc.
All Precision Home Improvement, Inc.
4.9(
51
)

Serving West Islip, NY and surrounding areas

Angi Approved

In business since 2016

Free estimates

Credit card accepted

"It was awesome working with Anthony, and we’re so happy with the deck he built. He also was super responsive in providing all documentation I needed to obtain a permit. Will be using him for more work! High recommend!"
Before repair
Before repair
Before repair
Before repair
Starting the repair

+328

Response time6 hrs
2 neighbors recently requested a quote
Recommended by92%of homeowners
Avatar for JBL HOME IMPROVEMENTS INC
JBL HOME IMPROVEMENTS INC
4.9(
227
)

Serving West Islip, 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
Additional Photos
Additional Photos
Additional Photos

+23

Response time1 day
Response rate89%
17 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 West Islip, 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 West Islip, 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 VP Quality Contracting
VP Quality Contracting
4.9(
58
)

Serving West Islip, 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
Avatar for Loja Renovations Fine Carpentry LLC
Loja Renovations Fine Carpentry LLC
4.9(
16
)

Serving West Islip, NY and surrounding areas

Angi Approved

In business since 2024

Free estimates

"I hired Loja Renovations to assembly a number of furniture I bought online that was very difficult to put together. They came and quickly assembled them with ease. They're very skilled and efficient. Apart from the reasonable cost, I was particularly impressed with their professionalism, their show of care for the customer and their respectful attitude. I definitely plan to use them again."
Bathroom
Bathroom
Bathroom
Bathroom
Bathroom

+5

Response time1 day
1 neighbors recently requested a quote
Avatar for Homes & Beyond, Inc.
Homes & Beyond, Inc.
4.7(
15
)

Serving West Islip, NY and surrounding areas

Angi Approved

In business since 2008

Free estimates

Emergency services offered

"Remodeled our bathroom, kitchenette, and resolved other unforeseen issues. The remodeling crew did an excellent job! What we loved best was the accommodations, arrived on time, reasonably priced, and understood our remodeling needs. Would hire again for other home remodeling."
Kitchen
Kitchen
Kitchen
Kitchen open layout
Kitchen open layout

+50

Response time6 hrs
Response rate100%
7 neighbors recently requested a quote
...
Showing 1-10 of 1781
FAQs for basement remodeling projects in West Islip, 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 West Islip, NY homeowners’ guide to basement remodelings

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