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residential plumbing services

Square One, Inc. is a residential plumbing contractor, located in Castle Rock, Colorado offering residential plumbing installation for residential remodels, single-family and multi-family homes.  With over thirty-five years of plumbing installation experience, our goal for each project is the timely installation of quality plumbing systems that meet the home builders/general contractor’s schedule and quality requirements.  Utilizing resources of our Plumbing and Mechanical design experience, our residential plumbing installation team incorporates knowledge of plumbing design methods and current material/equipment options.


To produce a quality residential plumbing product, Square One, Inc. is committed to strong communication with our clients and all members of the construction team.  Our objective is met only when our client receives a final plumbing system that exceeds their expectations.


We provide the following residential plumbing services:


  • Design and installation of waste and vent systems
  • Design and installation of domestic cold water systems
  • Design and installation of domestic hot water systems
  • Design and installation of domestic hot water recirculation systems
  • Design and installation of gas piping systems
  • Design and installation of water filtration systems