Welcome to RS CONTRACTING
Arizona’s harsh environments demand more than just experience — they demand grit, precision, and relentless commitment. RS Contracting delivers infrastructure solutions that stand the test of time, serving communities that depend on reliable water and wastewater systems every day.
RS Contracting is built for tough jobs and tougher conditions. Specializing in water and wastewater infrastructure across Arizona, we deliver lasting solutions with grit, precision, and pride.
To build water and wastewater systems that stand the test of time, driven by experience, integrity, and a commitment to doing the job right the first time.
Founded in 2015, Buildpro started as a small, family-owned business with a vision to provide top-notch construction services. With a handful of skilled craftsmen and a dedication to excellence, we quickly established a reputation for quality and reliability in our community.
As our reputation grew, so did our opportunities. We expanded into commercial and industrial construction, taking on larger and more complex projects. This expansion allowed us to broaden our expertise and serve a diverse range of clients.
Innovation has always been at the heart of Buildpro. We continually invest in new technologies and construction techniques to stay ahead of industry trends and deliver the best possible outcomes for our clients. Our commitment to sustainability has also driven us to adopt eco-friendly practices and materials.
Beyond our projects, Buildpro is committed to giving back to the community. We support local initiatives, sponsor events, and participate in charitable activities to make a positive impact in the areas where we live and work.
Tim Rockholt began working as a laborer in the water and wastewater industry in 2001 with Felix Construction and found his passion. Over the next five years he proved himself and was made a foreman. He then worked his way up to Project Superintendent and was managing a team of 25 direct reports and day-to-day operations for construction projects, including budgets, manpower allocation, safety compliance, equipment utilization and alignment with project plans, timelines and specifications. After nearly 20 years, Tim took the leap and co-founded ASR Construction Group where he helped grow the business and manage project schedules. In 2025, Tim and his longtime friend and business partner, Dennis Sime established RS Contracting with the vision of building a company centered on their shared values of hard work, integrity and faith. Their shared goal is to build a company where people want to come work, develop their careers and someday retire. Tim resides in Queen Creek with his beloved wife, and they are the proud parents of two grown children. Outside of work, Tim enjoys NASCAR, sprint car racing and fishing.
Dennis Sime has spent more than 25 years working in the construction industry with a focus on water systems and wastewater management. Dennis was born in Boise, Idaho, where he spent his early years before the family moved to Arizona. It was there his father founded Hunter Contracting and Dennis grew up learning the construction business. Starting in the field, he worked his way up to foreman and superintendent. In 2001 he joined Felix Construction as a Project Superintendent and was later promoted to General Superintendent, where he managed a team of 85 field operators and more than $75 million in construction projects. In 2020, he co-founded ASR Construction Group and led the development and enforcement of a companywide safety and quality control program, ensuring full compliance with OSHA standards. He recruited and hired skilled field personnel and implemented comprehensive training and readiness programs to equip crews with knowledge and tools to execute work safely and efficiently to meet project demands. After five years growing the business, Dennis and his longtime friend, coworker and business partner decided to forge their own path and launched RS Contracting.
Dennis is the proud father of four – three sons and one daughter. Outside of work, he enjoys spending time with his family, camping and fishing. He also enjoys golf and sprint car racing, two interests he discovered as a young boy.
We are committed to using the highest quality materials and the latest construction techniques to ensure the durability and beauty of our projects.
Honesty and transparency are at the core of our business. We believe in doing the right thing, every time.
Our clients are our top priority. We work closely with them to understand their needs and deliver results that meet their expectations.
We embrace innovation and continuously seek new ways to improve our processes and deliver better results.
YOUR COMMITTED PARTNER
Client Satisfaction
Years of Experience
Completed Projects
Municipality Projects
From water treatment to wastewater systems, RS Contracting brings the skill and toughness to handle the work that matters most. Let’s talk about your next project.
Built for the Toughest Water and Wastewater Challenges in Arizona
