CHOOSE EXPERIENCE.
CHOOSE ONYX.
When you work with Onyx Corporation, you’re working with a partner who is right there next to you at every stage. Our team will ensure everything is done on schedule, on time, to your complete satisfaction. We offer a unique breadth of experience in materials and trucking, excavation, and landscape construction, so we can understand the big picture of your project. From your needs above ground to those below- Onyx can accomplish it all.
About ONYX Corporation
Onyx Corporation was started by John and Stacey Durkin in 1980, with early beginnings as a trucking company under the name Onyx Transportation. The name “Onyx” came from their first truck, painted Onyx black. In the 90s, the company grew to include a 30 acre sand and gravel pit and quarry in Leominster, Massachusetts- which is roughly the same time they branched out into excavation. These private, local jobs soon turned into larger public infrastructure work.
LANDSCAPE CONSTRUCTION
We’re proud of the reputation we’ve earned through years of collaborating with renowned custom home builders and architects to build luxury landscapes.HORTICULTURE
SERVICES
You’ve invested your time, money, and energy into creating a beautiful landscape– it should stand the test of time. Led by a certified arborist with over 30 years of experience. SITEWORK & CIVIL
INFRASTRUCTURE
We have a diverse background in managing and operating jobs, large and small. From the excavation of new homes’ foundations and septic systems to complex municipal infrastructure work. AGGREGATE &
ORGANICS
For more than 30 years, our clients have counted on us to produce quality material at competitive prices. With extensive experience in residential landscapes and civil infrastructure, we have a deep understanding of the material needed for your project. WHAT IS THE ONYX
DIFFERENCE?

It’s not just our depth of knowledge in excavation that sets us apart. We’re sensitive to the environment in every decision we make, reusing and recycling materials as much as possible, and we have extensive experience working with LEED-certified architects. We are also committed to safety: we’re fully bonded and insured, and our employees are OSHA- or MSHA-certified, with many trained in first aid – which means that you can rest assured that your site will be managed to the highest standard.
JOIN THE FAMILY
We’re seeking professionals to help us continue our legacy of eco-centered expertise and building long-lasting relationships. Apply today/check out our available positions!
SEE OUR TEAM AT WORK
At ONYX, each project we take on has it’s on unique challenges and outcomes. What sets us apart is how we execute in any situation that arises. We plan for the best, but are prepared for anything that might arise. From million dollar landscaping projects, to multi-million dollar construction contracts – our team has the know how to get the job done right.
SEE OUR TEAM AT WORK
At ONYX, each project we take on has it’s on unique challenges and outcomes. What sets us apart is how we execute in any situation that arises. We plan for the best, but are prepared for anything that might arise. From million dollar landscaping projects, to multi-million dollar construction contracts – our team has the know how to get the job done right.
Bluestone Masterpiece
When we look back on this project, it’s with fondness and pride. This residential project let us work with fantastic clients and do work that really challenged us- in all the best ways. Work began in 2019 with the front of the house: Phase 1 included designing and...
Read MoreContemporary Forest Hideaway
Read MoreOn the Hill Above Sudbury River
We were able to help this customer bring their vision of a private pool set back in the woods to life. We performed the tree removal and site work necessary to clear the area and prepare for the pool. In addition to the large pool, the team at Environmental Pools also...
Read MoreBlue Marble Oasis
We were able to help this customer bring their vision of a private pool set back in the woods to life. We performed the tree removal and site work necessary to clear the area and prepare for the pool. In addition to the large pool, the team at Environmental Pools also...
Read More
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We hired Onyx for all the site work, landscape construction and horticultural work for the construction of our house and barn. That work took about 70 weeks, shorter than we had expected. While the project was complete in late 2015, we continue to use them for maintenance and small projects. Across that entire scope of work, the quality was outstanding. They deliver work on time, and their estimates are detailed. The specifications were demanding, and Onyx met them all. They participated closely in the planning work with our architect, landscape architect and general contractor. They have a massive armada of the right equipment, which is well maintained and operated by skilled, fun-to-be-around people. They are great to work with, and I recommend them.
– William Huyett, past & current client
Onyx has built over 20 projects I have designed. I can’t recommend them highly enough. It is always a pleasure to work with them. The quality of their work is excellent for both hardscape and planting. They are professional in organizing all aspects of the project from estimating, to installation and project follow up. The project managers and crews are easy to work with and I am able to make each project a collaborative effort which ensures the best outcome for the client. They are upfront about project costs and duration.
– Elizabeth Hanna Morss, Landscape Architect
Excellent service, products, and aesthetic. Thoroughly enjoyed working with the entire team, from managers to installers. They also stand behind their work.
– Ellen Freeman Roth, past client
Onyx revamped our whole yard 5 years ago and we couldn’t be happier with the beautiful oasis they designed , built and planted for us. The stone work is gorgeous and looks as if it’s always been a part of our yard as it blends into the landscape seamlessly. Not only did Onyx give us a gorgeous yard, they did the prep work so expertly. They paid close attention to drainage and made sure everything drained properly which was an important issue to us. Not only is Onyx expert at all things landscape but every single craftsman working for them from lighting to stone masons were incredibly nice… The family who own Onyx are all terrific, kind and out of their way to be helpful. I wholeheartedly recommend Onyx and would use them in a heartbeat.
– Sari Kelly, past client
Onyx did a complete relandscaping of our 1926 home in 2017. The results are spectacular. We never knew our property could be so beautiful. This year we are one of the houses on the garden tour. The Onyx crew that worked here everyday was amazing. They always told me what to expect each day, they were polite, respectful and hard working people. I recommend them highly.
– Past client
Everyone in the company was extremely professional, friendly, and hardworking from beginning to end. We want to be outside all the time now. We are thrilled with the end product and would definitely hire Onyx again to do other projects.
– Nancy Wurman, past client
My wife and I were so impressed by the quality of the Onyx work. They adapted throughout our project as we requested, and their team worked very professionally to complete the project in a reasonable time frame. We recommend Onyx for anyone that has basic or complex landscaping needs.
– Eric and Pamela Evans, past client
My husband and I have worked with Onyx on commercial projects, a major renovation at our church, and at our own home. Working with Julie and John and their crew was a delight from start to finish. They were creative, fun, responsive and respectful. The jobs were finished in a timely and professional manner and follow up was a priority. The results are beautiful and I would recommend Onyx to anyone.
– Caroline McCloy, past client
As an experienced landscape architect, I have partnered with many landscape contractors over the years, and I must say that working with the Onyx team has been one of the least stressful and most successful endeavors I have undertaken.
– Holly Ben-Joseph
Registered Landscape Architect
Registered Landscape Architect
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