http://www.legislation.gov.uk/asc/2026/5/section/11Building Safety (Wales) Act 2026enStatute Law Database2026-06-22Expert Participation2026-04-28 PART 1SAFETY OF BUILDINGS CONTAINING TWO OR MORE RESIDENTIAL UNITSCHAPTER 2KEY TERMSAccountable persons, principal accountable persons and common partsDeterminations by residential property tribunal 11 1 An interested person may apply to a residential property tribunal for a determination, as regards a regulated building, of any of the following— a the person or persons who are accountable persons for the building; b the person who is the principal accountable person for the building; c the part of the building for which any accountable person for the building is responsible (see section 16). 2 If, on an application under subsection (1)(b), it appears to the tribunal that there is more than one accountable person within section 9(3), the principal accountable person is such one of those accountable persons as the tribunal considers appropriate. 3 In this section “interested person” means— a the building safety authority for the building, b a person who holds a legal estate in the common parts of the building or any part of them (or who claims to hold such an estate), or c a person who is under a relevant repairing obligation in relation to the common parts of the building or any part of them (or who claims to be under such an obligation). 4 Any person may apply to a residential property tribunal for a determination, as regards a regulated building, that— a the person is not an accountable person for the building, or b the person is not the principal accountable person for the building. S. 11 not in force at Royal Assent, see s. 138(2)