Cascella and Sons Construction Corp.
“Transparent with all the important information and kept me informed every step of the way.”
Best General Contractors near Islip, NY
We have 3 companies in Islip on file, and all of them are on this list, along with 12 from Central Islip (7, 3 mi), Islip Terrace (3, 1 mi) and East Islip (2, 0 mi).
1 open 24/7 · 8 open weekends · 12 rated 4.5+ · 3 show a license
Data verified October 18, 2026
Unique Design Home Builders
“James quotes are detailed and accurate to the actual price paid at job completion.”
Kuhn Construction
“They both renovated a good portion of our home and added a very large extension/great room.”
Bilello Construction
JZE Home Improvement
“They did a beautiful job on my bathroom.”
Black Sea Constructions
“I have a few other projects in mind & Black Sea will be the first contractor that I will call.”
Listed for homeowners in and around Islip, NY, these 15 companies take on multi-trade work, from a single addition to a whole-floor renovation. What each one says about licensing, hours and the work it takes on comes from its own website; ratings and quotes come from public reviews.
Area overview: Islip, NY
14 of the 15 companies on this page have a rating, from 4.4 to 5.0 across 214 reviews; 2 have 50 or more reviews and 12 are rated 4.5 or higher. When customers rate these companies on specific qualities, they most often praise professionalism (91%), quality (91%) and responsiveness (81%). 1 is open around the clock; 8 are open on Saturdays and 2 on Sundays. 3 show a license on their websites and 2 have a BBB rating of A or A+. 9 have ten or more years of experience, the longest 43 years. 1 offers emergency call-outs; 1 offers financing or payment plans; 2 give free estimates and 2 are family- or locally-owned. We have a website on file for 10 of the companies on this page; 8 publish a contact page and 6 list a public email. We count these figures across the companies on this page; distances are straight-line, and hours and prices change, so confirm the details with the company before you book.
Why do some of these firms sit outside Islip?
Only 3 of the 15 companies here are based in Islip. The rest come from other towns within 25 mi. Crews travel to the work, so the office address matters less than whether they will send the same people every morning and what travel time does to the price.
Maxxum Construction Corporation
“I highly recommend Maxxum for your remodeling needs and I will certainly use them for any and all future projects.”
Gold Star Home Improvements
“I always trust that he will do the job on time, professional, friendly and correctly.”
Ashlar Contracting
Tufco Inc
Selman Handyman Gutter Corporation
“The team was friendly and conducted themselves professionally.”
Neftali Home Improvement
“Even with all the construction, he managed to keep the areas being renovated clean.”
AGI Custom Builders Inc
Mjconstructions
Hendriks Contracting Corp
Why these companies made our list
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