5.0 stars from 16 reviews

Onyx Concrete, did a fantastic concrete patio,walkway, and large concrete pad for a shed and pavilion,in our backyard. Sergio and all his crew were here on time.They were very considerate to our property and our neighbors. I'm very happy with this project. We can't say enough about how professional Onyx Concrete is and how comfortable we feel about hiring them for our front yard ,walkway ,driveway project.

Sergio and his team crafted a gorgeous concrete patio with sauna and shower pads for us! I highly recommend them for your concrete projects. Sergio is a knowledgeable craftsman and fantastic communicator, who consistently went above and beyond to ensure we understood our options at each step of the process. His recommendations were spot on and helped us design a space that far exceeded our expectations in appearance and quality. He took extra time on multiple occasions to educate me on the materials and care involved in maintaining the slab and continues to be available for questions on upkeep. His crew was super friendly and professional, leaving us with a spotless yard after huge prep and pour days. Overall, we had a fantastic experience working with Sergio's crew at Onyx!

We had several quotes on our driveway, we chose Onyx because Sergio offered professionalism and the most reasonable price. We were impressed with how fast and efficient they were and their willingness to answer any of our questions on the spot. They arrived every morning at the exact time that was quoted. We were also pleased with how the team took care of surrounding plants, roses, and rockery. The driveway looks fantastic down to every detail. We would absolutely use this company again for concrete projects and would highly recommend them friends and family.

I recently hired Onyx Concrete, a family-owned business led by Sergio Martinez. I needed to replace my old/cracked driveway, walkway up to the front door as well as add an additional walkway on the side of my house. Sergio and his crew were amazing to work with. I’m more than happy with the results! From the start, communication with Sergio was excellent as he is very knowledgeable and skilled in his trade. He explained the process clearly, provided a detailed estimate, kept me updated throughout the project and even offered a lot of practical solutions as well. The crew was punctual. They paid attention to every detail — from leveling the base, to the smooth, even finish of the work. So respectful of my home and cleaned up thoroughly after each day. The quality of the work exceeded my expectations. My car no longer bottoms out when I pull into my garage, and the project was completed on time! Yay! However, Sergio went above & beyond…. after the project was completed, he picked up sealant, helped to apply it because I wasn’t too sure how to do it, but wanted my new concrete work to be protected. Anyways I would confidently recommend ONYX CONCRETE and SERGIO MARTINEZ to anyone looking for reliable, skilled, and professional concrete services. We’ve already received compliments from neighbors!

This was the best experience I've ever had with a contractor. Sergio was the best. Took the time to explain all my options (I learned a lot about concrete), worked with my budget, and finished in the time-frame I was told (actually they were able to get me in earlier than. Even after one of my housemates walked across the not fully dried concrete (there was caution tape around the patio and everything) Sergio came back and fixed it for us and didn't even charge us for the extra work. The patio came out so great! I would 100% recommend to anyone.

From the moment I met Sergio as he stepped out of his truck, I felt a sense of calm and confidence. Over the years, I’ve hired many contractors, and unfortunately, a majority of those experiences involved unexpected problems, delays, and costs that far exceeded the original estimates. Sergio was different from the very beginning. He won me over from our first conversation. I immediately felt a connection, and for good reason—a genuinely honest man who is passionate about his work. That’s not something I say lightly. He listened carefully to my ideas, reviewed the diagram I had drawn, and took the time to understand exactly what I wanted to achieve by extending our front porch. While he offered a few suggestions of his own, he ultimately brought my vision to life using his expertise and his keen eye for what best complemented the house. What impressed me most was his communication. Sergio thoroughly explained the preparation process, each step of the project, and what it would take to complete the addition. He never grew tired of answering questions or explaining things more than once. It was clear that he took great pride in his work and wanted me to feel informed and comfortable throughout the entire process. Sergio followed through on every promise he made, and the same can be said for his entire crew, who were fully invested in what we jokingly called “Project East Wing.” Once the concrete was poured, the real artistry began. Watching Sergio work on the details was remarkable. He carefully etched the borders, refined the curves, perfected the lines, and adjusted every brushstroke with the precision of an optometrist fine-tuning a pair of glasses. He wouldn’t stop until everything was exactly right. I can honestly say I have never been happier with a construction project or its results. Onyx Concrete is a family business that delivers a level of care, craftsmanship, and integrity that many large corporate companies simply cannot match. Sergio kept his word from start to finish and has even stopped by several times afterward to make sure the concrete was curing properly. That kind of dedication is rare, and it speaks volumes about both the man and his company.

I cannot say enough good things about this company. From the first phone call, I felt like I was talking to someone who genuinely cared about helping us make the best decision for our family, not just selling a job. Communication was amazing. Every text, call, and question was answered quickly, and they were incredibly patient as we worked through options, gathered bids, and tried to make everything fit within our budget. I always felt heard, respected, and never pressured. What really stood out to me was their honesty and knowledge. They took the time to explain things thoroughly, were upfront about costs and expectations, and helped us understand the “why” behind their recommendations. That level of transparency is hard to find these days. The finished product is beautiful, and you can tell they take pride in their work. The quality, professionalism, and customer service were top-notch from start to finish. If you’re looking for a contractor who is trustworthy, easy to work with, knowledgeable, and delivers a great finished product, I highly recommend Onyx Concrete. We are so happy with the experience and the final result!

I found Onxy Concrete LLC through Facebook Marketplace and it was a pleasure working with Sergio. He went above and beyond, made sure how we wanted the concrete to look like and executed. His communication and planning were direct, detailed and very professional. I would work with him again for more projects in the future

Sergio did an outstanding job on our concrete patio. From the very beginning, he was communicative, professional, and took the time to walk us through every step of the process. He clearly cares about doing quality work — he took all the right measures to make sure the job was done properly, and the results speak for themselves. We're very pleased with how it turned out and wouldn't hesitate to recommend him to anyone looking for a concrete contractor. Thanks, Sergio!

I have choose Onyx for my backyard Concrete. The company work very professional in explain how the process and get the work done. It really satisfied my expectations and recommendation for this company to Everyone. Thank you Onyx Team

I will forever recommend Onyx for concrete work! Sergio and his team totally saved me last minute. The company I was going to work with flaked, and I had another contractor coming that Saturday to start the framing for my motorcycle garage. I called Onyx on Tuesday. Sergio came out same day to do a bid and spent a considerable amount of time explaining everything to me very transparently. He and his crew were at my house 8am sharp on Thursday morning and got the slab I needed done. Not only was Onyx super quick to help me in this situation, but they did an excellent job. This was just for the foundation of my little garage but they still made sure that it looked nice and was aesthetically pleasing. Sergio was incredibly knowledgable and brings over a decade of experience in commercial concrete work to residential customers. He was professional and transparent, which I greatly appreciated. Concrete work isn’t cheap in general but it is something you probably shouldn’t skimp on. Onyx was reasonably priced for the quality of work they delivered and I’m confident that this foundation was built to last. Thanks again to everyone at Onyx! See y’all on my next project.

I couldn’t be happier with the concrete installation from Onyx Concrete. From start to finish, the entire process was smooth, professional, and well-organized. I had a botched DIY concrete job done the summer prior which did not meet mine or my wife’s standards. Onyx Concrete put my mind at east with a quote that included tearing out the old slab without breaking the bank. The quality of the work truly stands out—the finish is clean, durable, and exactly what I was hoping for. It’s clear they take pride in their craftsmanship, and it shows in the final result. Age old saying of “You get what you paid for!” They also made sure everything was cleaned up and left in great condition when the job was done. If you’re looking for reliable, high-quality concrete work, I highly recommend Onyx Concrete. I’m extremely satisfied with how everything turned out.

Absolutely Recommending to my family & friends, prices were on the higher end, but that was easily was overlooked with the amount of knowledge communication Sergio and his team offered. I think they were in and out within the week and very patient with all of my thousands of questions . To be transparent I did almost go with another much more affordable local company, was very underwhelmed with the type of service and communication they were able to maintain. Definitely recommended to go with Onyx Concrete. thank you again!

Onyx has far surpassed my expectations. I originally considered another option that was the cheaper choice. There was a huge lack of communication and the quality of work was significantly below my standards. My expectations were not met to say the least. I ended up going with Onyx and it was the best decision I could have made. Communication was clear, quality of work was top tier, and the customer service was amazing. Sergio and Jazzlyn have both been great from start to finish. Would absolutely recommend onyx.

We hired Onyx Concrete to install a custom walkway and patio in our backyard, and they did a great job. Communication was excellent! They were clear, responsive, and kept us updated the whole time. The crew worked fast, stayed on schedule, and the finished patio looks clean and exactly as we discussed. Overall, solid work and an easy experience.

Excellent choice for quality and affordable concrete services. From start to finish Onyx was professional, punctual, and incredible skilled. They took the time to explain every step of the process and delivered what was promised.