If there was an award for most unhinged gutter, mine would win (photo attached). Instead of draining a gentle trickle of melting snow, I got an avalanche of ice. I needed this fixed ASAP, so I used the get a quote feature on Yelp and Dan from GNC reached out. I was able to send photos, get a quote, and have him out the next day. Within a few hours, I had a brand new (and larger) gutter installed. So far, no more ice problems. He's a great communicator (love an ETA text), an honest person, and good with gutters. read more

GNC General Construction - Roofing Near Me - Wanaque, New Jersey

G&C recently created a patio & retaining wall while integrating pavers around the deck & 6x6 posts. A concrete slab for the hot tub was set exactly to specifications. Price was fair & no hassles from start to finish. Comfortable recommending Dan's service; happy with the transformation read more

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I hired GNC to complete a retaining wall, redo my driveway skirt, repair a step, and finish several other masonry projects. From the beginning, I was impressed by how engaged and knowledgeable the owner was. He took the time to discuss the work, offer recommendations, and explain the best approach for each part of the project. The team was professional, kept the work area clean, and made sure no mess was left behind at the end of each day. They answered all of my questions throughout the project and were honest and transparent about timelines and project completion expectations. While many contractors can perform masonry work, I appreciated that GNC specializes in it. Their expertise was evident in both their craftsmanship and attention to detail. The quality of the finished work was phenomenal, and the results exceeded my expectations. I would highly recommend GNC to anyone looking for skilled, reliable masonry professionals who take pride in their work. read more

Pride and quality workmanship, defines GNC Construction. They deliver! Dan and his father, along with his team of professionals, completed the outside steps and landings efficiently, cleanly, and timely. They were with us throughout the process. They responded to our needs, gave plenty of options, and provided a great price and a lengthy warranty. A family-owned company that provides attention to detail, that's the difference. Don't hesitate to contact them for whatever your construction needs. You will not be disappointed. read more

GNC General Construction fixed a bunch of stuff with my roof -- replaced damaged shingles, fixed my gutters, added ventilation, routed my bathroom vent through my roof instead of just into my attic, and fixed a bunch of leaks caused by all of the snow this past winter. they are one of the easiest contractors to work with I have ever had at my house: responsive, on time, fully prepared with all materials, quick, and cleaned up all detritus after the job was done. work looks excellent, and better yet GNC offers a 7 year warranty if I have any issues. every other roofer I had in tried to upsell the bejesus out of me except for these guys. I will absolutely be using them for future projects & recommend them to anyone looking for roofing assistance. thank you Dan & crew! read more

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Hello! I have had a lot of work done in several properties throughout my life, and never I have experienced the care and professionalism of Dan and his crew. I had my front steps replaced, Dan was the most reasonable quote, was available to start AND finish the job immediately. The materials were of high quality, the work was done well, in a timely manner, and Dan is the nicest guy. He will not leave your house or property unless you are 100 percent satisfied. Answers questions patiently and works with your budget. Thank you GNC General Construction for a job well done. I recommend this company wholeheartedly. Pictures of before and after below. read more

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Worked with Dan over the last few weeks on our crumbling front walkway. He came out a few times before the project started to go through what we wanted, along with helping us with design. Dan also brought some samples for us to see before they started. It was a great experience and the front steps/walkway turned out great! read more

UPDATE 4/7/2026: Dan Cannizzo said he used a bad concrete mix and he is not responsible for it. He assured me that he will not be doing anything at all to fix it. He was extremely rude and completely unprofessional. This company is a scam. Stay far away. We hired GNC General Construction to pour a new concrete patio and to redo our front steps, which were very uneven. They also replaced our old, rotted support columns. They initially did what I thought was a fantastic job. They work hard and everything went pretty smoothly. Even after the bill was paid, I noticed a minor issue that they came back to resolve very quickly. They gave a 10-year warranty on the patio, which it turns out is useless. Fast forward a few months and after the snow, there are lots of areas where the concrete has started delaminating and coming apart in pieces. I called and initially spoke with Fabio Giordano, who claimed that Dan Cannizzo bought that part of the business and is responsible for fixing it. I then called and spoke with Dan Cannizzo about the problem and he assured me that he'd be in touch in a day or 2 to come and see it. Since that time, he hasn't contacted me or responded to a single call or text. I feel this business is scamming me, since I can't get in touch with anyone to repair the damaged caused by shoddy workmanship. read more

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GNC Construction performs great result their on time, competitive pricing and most importantly they are reliable. The craftsmanship of their work shows my paver tiles and concrete patio look amazing. We will be utilizing their services again in the near future for roof replacement and other repairs. read more

I couldn't be more impressed with the outstanding roofing repair services provided by Dan and his team. They tackled a significant list of problems that had been neglected and performed poorly by the previous roofer. This included installing essential flashing where none existed around the chimney, repairing and re-mortaring, replacing numerous loose and missing bricks, added new shingles flashed various leaky roof vents. They arrived on schedule, kept me informed throughout the day. Pricing was incredibly fair, I can't believe I was almost going to try and tackle this job myself. read more

Dan came recommended by a friend that used him to redo a chimney and fireplace plus roofing issues associated with the chimney. He did a great job there so when I had a leak around my chimney I called Dan. He fixed the flashing and shingles around the chimney and on other parts of our roof. He also advised us that there were developing issues around our windows which we greatly appreciated. I will be using Dan again. read more

Did a great job on my front step and pathway Looks beautiful Nice people to work with read more

Dan and crew cleared my roof of snow and ice. He was very responsive and great communication throughout the process. Really took the time to explain what needed to be done. Pricing was very reasonable and the job was done fairly quickly. read more

Dan and his team responded quickly when we needed an emergency roof repair to stop melting snow and ice from leaking into our house. They finished the job in record time and for a reasonable price. read more

Great service. GNC repaired our retaining wall and did an excellent job. These guys know what they are doing, are very professional, and I highly recommend them. read more

We have been working with Dan and his family since 2020. From laying pavers in the driveway, retaining walls, sealing exterior walls to concrete paths, etc. Excellent quality work, reasonable pricing, friendly, professional, quick to respond, trustworthy and most importantly reliable! They have worked on several homes on our block as well. We HIGHLY recommend them! read more

Really great contractors. Start to finish, promises made promises kept. That speaks more to me than anything. Very reasonably priced and the work was done perfectly. My husband and I will use them for other projects in the future. We had our roof replaced and new gutters installed. read more

We had an outstanding experience with GNC Construction. They recently installed new front steps and repaired our pavers, and we couldn't be happier with the results. Daniel is incredibly knowledgeable, friendly, and has an impeccable work ethic. If trust, reliability, and quality craftsmanship are what you're looking for, look no further than GNC. Daniel and his crew arrived on time, completed the work exactly as promised, and ensured everything was done to perfection. Their pricing was fair, and they left the site spotless. Before accepting payment, they made sure we were 100% satisfied with every detail. We're so impressed that we've already scheduled them for another project in May. GNC Construction is truly a top-tier company that I highly recommend! read more

I just hired GNC General Contractor to do pavers and polymeric sand/ seal on my existing backyard pavers. Dan (co owner) was nothing but professional and responsive. He gave me a wonderful price (much lower than the 5 other quotes prior) AND his quality of work was sufficient. I would 100 percent recommend GNC General to anyone who needs pavers / home renovation. THANK YOU to Dan and his wonderful team !!! read more

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This past month, I had three sidewalks slabs that needed to be replace due to roots from a tree planted in the township owned section of land in front of the house. GNC came out a day after being contacted and gave a thorough explanation of the costs and process required. More impressively, they were so confident in the quality of work that only a small initial payment was required with the bulk of the payment to be given AFTER all work was completed. They efficiently handled permitting and review with the village and completed the work in two days. New slabs are beautiful and perfectly fitted. I was so impressed and trusting of their work that I am choosing them to remove and replace a new concrete slab floor for a new garage. I would HIGHLY recommend their services. read more

GNC General Construction - Roofing Near Me - Wanaque, New Jersey

Had a tree limb do some damage to my garage roof. Dan responded right away and came out the next morning to give me a quote. Price was fair and we set a timeline to do the work which was meant. Also had him fix my walkway pavers. Nice guys to work with and will hold on to their contact info for any future outdoor repairs I may need help with. read more

GNC came out to address a leaky skylight and provided a straightforward solution as a fix giving me a couple of options varying in price. The job was completed successfully and they were professional and efficient at all times. Very happy to have come across this company and will certainly give them a call down the line as necessary! read more

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Dan and Fabio came out to fix 2 roof leaks. They were very easy to deal with, they explained what I needed clearly and when it was time to do the repair they showed up early, were very professional on site, left no garbage and even provided me pics of the before and after. They'll be the first ones I call for any future projects! read more

Fabio and Dan showed up and did an awesome job with the service requested. They cleaned the gutters quickly and left everything very clean on the ground afterwards. Highly recommend their services. read more

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Dan and Fabio did an outstanding job on my siding, roofing, and walkways. Their work was top-notch, and their prices were fair. I highly recommend them for any construction project. read more

This company's service was quality and professional. They came to my home reviewed the outside and were able to pinpoint the issues right away. Getting GNC to work on my home was the best decision I made. It was a pleasure working with Fabio, Daniel and their team. Team is friendly and easy to have around the house. Worth every penny. Looking forward to continue working with them in the future on my home. read more

Great price, communication and excellent work. They fixed our old brick steps / pointing. Done on time and in one day. We would definitely recommend using GNC. read more

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This company and their honest, hardworking business owner Dan were the right choice to repair our slate roof on an historic 1897 house. We had roof leaking in 5 areas and they did a great job sealing the holes and replacing with a slate that perfectly matched the slate we had. We also hired them to repair a flat roof section of our house and a rot-damaged dormer. They were responsive (quickly answering our calls) and reasonable. GNC is an excellent resource for home repair. read more

We have done a few projects with Daniel and the GNC team and have a great experience each time. Competitive pricing, quick and correct work, and great communication throughout. Would definitely recommend! read more

I had some gutter issues that needed to be looked at. Daniel and Fabio answered my request for info quickly. They answered all my questions (even the unrelated ones). They came quick for an estimate. Since it was a quick job they were even able to complete the job same day! Gave me a ton of great advice /pricing ideas for my next projects. read more

Dan and Fabio were super responsive and flexible. They quickly provided an estimate for digging and pouring concrete footings, worked with my schedule to get the job done as quickly as possible and delivered quality work! Highly recommend them for your next job! read more

Initially called up for cleaning service of my gutter. Thankfully there wasn't much debris... But only to find out there were a few spots on my roof that had cracks and water was slowly leaking into my attic. Thankfully Dan was able to spot it and walk me through what was happening and why it was happening. As a first time homeowner, i learned a lot and would call GNC again their excellent service!!! read more

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I want to thank GNC for their service. I had a broken concrete pillar that needed to be replaced and received several ridiculous quotes to repair. Daniel and Fabio came out gave an estimate to repair and completed the job. They were very easy to work with and professional. I will use them for future business and have already referred them to two others looking for masonry repair. read more

GNC General Construction - After - Roofing Near Me - Wanaque, New Jersey

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GNC did a great job on my driveway repair. They leveled a depression on my paver driveway. They gave me a fair estimate and the work was done quickly and professionally. Dan and Fabio were great to work with and I highly recommend GNC. read more

hired this company to do a pavers job for me. Best decision I made. Professional from start to finish. Dealing with Fabio was 5 stars Anyone considering getting work done. Don't hesitate. read more

"I recently enlisted the services of Dan and Fabio for a roof and gutter cleaning, and I couldn't be happier with the results. From the moment they arrived, their approachability was immediately evident. They took the time to explain the process, and their honesty throughout the entire interaction was truly refreshing - a quality that seems to be increasingly scarce in service providers these days. No last-minute cancellations or unexpected surprises. It's a level of reliability that I've found to be rare in this line of work. Moreover, their knowledge and expertise were apparent throughout the entire process. They didn't just do the job; they explained potential issues and offered preventive measures without trying to create unnecessary problems to inflate the cost. In an industry where trust can be hard to come by, Dan and Fabio stand out for their integrity and genuine dedication to providing excellent service. I wholeheartedly recommend them to anyone in need of roof and gutter maintenance. Having professionals like them in the neighborhood is truly a great asset... read more

I had a leak from the roof/chimney into the first floor of my house. Dan and Fabio fixed the leak and the chimney which needed to be replaced from the roof up as well as the roof area around the chimney. They came when they said they were going to and explained everything. I am happy with the results as well as the accountability. read more