Legacy Construction Group
Best General Contractor for Custom Home & Additions Construction, Kitchen & Bath Remodeling, and Water Damage Mitigation in Federal Way, Black Diamond, Kent & all King County
If you’re looking to enhance your home or business building, you want an experienced and licensed general contractor who can deliver exceptional workmanship and service. Legacy Construction is renowned for excellence in custom home construction, kitchen, bathroom, and custom home build, commercial tenant improvements, and water and fire mitigation and restoration. For over two decades, our commitment to quality construction, creativity, and integrity has been evident in our work. Whether it’s a beautiful custom home or swift mitigation of damage from water, smoke or fire, our skilled team works closely with you to bring your vision for your property to life.
Legacy Construction Group is more than just a general contractor – we’re builders of dreams and solvers of problems. Our founder, Arcenio Contreras, started the company in 2006 with a very hands-on approach, involving himself in every facet of the construction of every job. From initial sketches to completed builds, Arcenio’s decades of experience and deep understanding both International Building Codes (IBC) and Washington State Building Codes (WRC) ensures every project meets and often surpasses industry standards.
Who We Are
Mitigation & Restoration
Whether from water, fire, or wind damage, you can count on our team for expert damage mitigation and restoration. We work directly with insurance companies and have extensive experience collaborating with adjusters, often helping our clients achieve notable deductible reductions. We provide swift and comprehensive drying to reduce the impact of water intrusion on your daily life, and we quickly restore all spaces to their pre-damage condition or better.


Kitchen & Bath Remodeling
Looking to renovate your home or office kitchen or bathroom? Our remodeling team can turn your vision into reality. Our personalized approach to design ensures our work reflects your unique style while functionally meeting your needs. Before beginning, we use the latest 3D technology to create a detailed and realistic preview of your new space, allowing you to fine-tune elements such as countertops and vanities before construction starts.
Home Additions
We specialize in creating home additions that expand your living space and seamlessly blend with your home’s architecture. Whether you need a guest room or an entirely new wing or floor, we’re ready to help. Our collaborative approach ensures your close involvement from initial blueprint to final brushstroke. Legacy Construction uses only premium quality materials to guarantee your addition is not only beautiful, but is built to last.


Custom Home Builder
Building a custom home is an exciting adventure in the creation of a unique environment that reflects your family’s personality and lifestyle. A home should be a personal statement, and we’re committed to creating custom homes tailored to our clients’ specific tastes and needs. We want every aspect of your home to resonate with your vision, and we work meticulously from initial sketch to final walkthrough to make sure that happens.
Commercial Tenant Improvement
We craft custom solutions for our business clients that are more than just work spaces – they artfully reflect our clients’ corporate identity and aspirations. A well-designed and constructed office interior, retail space, medical facility or other business environment makes a statement about your professionalism, attention to detail and corporate culture. Let us help you transform your commercial spaces to suit your unique operational needs while optimizing style and efficiency.

A General Contractor Committed to Your Vision
Whether recovering from water, fire, or wind damage, embarking on a custom home build, or remodeling your home or business environment, you can rely on our professional team to handle it all with creativity and high craftsmanship. Your vision – our expertise. Together we can create extraordinary spaces!
Testimonials
Arcenio and his team are great contractors. You will not be disappointed when having them as contractors. I am pleased with his work and I will be contacting him again. Abdulkadir warsame2023-11-30 Amazing experience and service. They did a really good job remodeling my garage and communicated throughly with every step. I strongly recommended Legacy Construction Group for any projects. Safia A2023-11-28 I called Arcenio about remodel of home. I've hired his company to remodel the house I am moving out of.We talked about this and that. I asked him to surprise me. I was overwhelmed when I saw what he and his team had done. I honestly cried, it's beautiful. He worked the magic. If anyone is looking for a professional contractor you found it here. Thank you Arcenio and team. The cost is reasonable. On time schedule date and completion was done as per quote. Mary Cadwell2023-11-22 I'm so impressed with their knowledge and professionalism. They are very responsive .I will be using them exclusively from here moving forward William Bill2023-11-21 After water damage we call legacy construction group. We don’t know what to do, Arcenio come to our house and explain us what’s the steps to take. He guide us on it claim, he deal with insurance Ajuster to make sure we get take care, due water damage we got new full kitchen cabinets, countertops all god quality and great work team. We really appreciate Arcenio and Legacy construction group help Cris Jordan2023-11-21 Strongly recommend Legacy Construction for construction. They were professional, timely, thorough, and responsible. The entire project went more smoothly than we could have hoped, from start to finish, and if something's not right, they'll fix it. Really grateful we went with Legacy Stanley Harper2023-11-20 I had a great experience, the team is, very professional, reliable, respectful and communicative. They provide high-quality service to their clients, by going above and beyond to get things done! “ It was a blessing to have them rescue me in the time of need. I highly recommend them. Thank you legacy for your hard work and excellence you provide to your customers!❤️ ana muratalla2023-11-20 We’re so stressful when our house had these water damaged, we’re lucky Arsenio took over and fixed all the problems. Excellent job! Johrey Tugade2023-09-15
An Experienced General Contractor Can Make Your Improvement Project a Breeze!
With a decades-long legacy of quality, customer satisfaction, and unparalleled craftsmanship, Legacy Construction Group is ready to transform your home or business spaces. Whether you need restoration after a flooding or fire event, you want to upgrade your existing home or office to better meet your needs and aesthetic preferences, or you want to build a new home, we’re ready to help. We’re a full-service general contractor with convenient and attractive pricing and financing options. Contact us today for a no-obligation initial consultation!
Experienced General Contractor Serving King County
Serving Auburn, Black Diamond, Covington, Federal Way, Kent, Maple Valley, Ravensdale & all King County