Water Softener Loop Not Installed: Can I Add Later in St. George New Construction?

https://wiki-aero.win/index.php/Water_Meter_Shows_Leak_but_Nothing_Visible_in_New_House:_Plumbing_Systems_in_St._George_New_Construction

Understanding Pre-Plumbing for Softener in St. George New Construction well, What Pre-Plumbing for Softener Actually Means As of April 2024, many new construction homes in St