Emergency work is about stopping water and removing danger, not altering the building, so isolating a leaking pipe or replacing a failed valve or tap like-for-like doesn't normally trigger listed building consent. Where a permanent repair would affect historic fabric, cutting into old plaster, lifting Horsham stone flags, disturbing timber panelling, we stop the leak first and flag what needs consent before anyone starts cutting. You get a dry, working house tonight and a proper plan for the rest.