Planning a new bathroom this year? It’s easy to think of it purely as a design job, choosing tiles, a new suite, maybe underfloor heating. But 2026 has quietly become one of the more significant years for plumbing regulations in a while, and it’s worth knowing what’s changed before work begins.
Updated Part L and Part F Building Regulations are now fully in effect, pushing for better energy and water efficiency in every new installation, particularly around hot water systems and ventilation in increasingly airtight homes. For a bathroom refit, that can mean more careful thinking around pipework layout, extraction and how your hot water is heated, not just how the room looks.
There’s also been a tightening of the rules around backflow protection, with water companies placing greater emphasis on documented testing and formally certified installers, especially where a bathroom connects to a wider heating or hot water system. It’s a reminder that even a seemingly simple bathroom installation touches on rules that change more often than most homeowners realise.
None of this needs to complicate your project. It simply means the plumber doing the work should already understand these standards and build them in as a matter of course, so your new bathroom is safe, efficient and fully compliant from day one, with no nasty surprises further down the line.
Smithsons Plumbing carry out bathroom installations across Medway and Rainham and stay on top of exactly this kind of regulatory change, so every job is done properly the first time. If you’re planning a new bathroom this year, get in touch with Smithsons Plumbing to talk through your project.
