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  • Is a Permit Needed to Replace a Bathtub with a Walk-in Shower?
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Yes, a building permit is typically required when replacing a bathtub with a walk-in shower.

According to local regulations in Denver and Centennial, permits are necessary because these projects involve altering plumbing, drainage, or structural elements. Specific triggers for a permit include:

  • Plumbing and Drainage: Moving the drain location (often to the center for proper sloping) or installing new supply lines and mixing valves requires a permit to ensure compliance with the Colorado State Plumbing Code.
  • Structural Changes: Altering walls or modifying the floor slope, which is especially critical for a curbless shower installation, requires regulatory oversight.
  • Inspections: The permitting process includes a rough-in inspection of the new plumbing before walls are closed and a final inspection once fixtures are installed to confirm the work meets safety standards.

Working with a licensed design-build contractor like ACN Construction can simplify this process, as they manage the permit applications, inspections, and trade coordination to avoid delays and ensure the project meets building codes.


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