Retrofitting a modern toilet is impossible because the water supply pipe comes up from the floor in a fixed position that interferes with the new toilet base.

Workarounds Described

• Dry fitting a new toilet to check clearance
• Shopping for same-length toilet as old one
• Considering cutting and extending copper pipe
• Contemplating removing floor to relocate pipe

Implied Software Gaps

• AR-based fixture compatibility checker that compares toilet dimensions against user-measured pipe and drain locations
• Product search filter that allows selecting toilets by base length and water supply position

PlumbFit

PlumbFit is a mobile app that uses augmented reality and floor plan input to verify plumbing fixture compatibility. Simply point your phone at the existing pipe and drain, select a toilet model, and the app overlays dimensions to show if it will fit—saving return trips and replumbing costs.