http://www.legislation.gov.uk/nisr/2012/192/regulation/49The Building Regulations (Northern Ireland) 2012texttext/xmlenStatute Law DatabaseBUILDING REGULATIONS2025-07-17Expert Participation2025-05-06 These Regulations revoke and replace, with amendments, the Building Regulations (Northern Ireland) 2000 and all subsequent amending Regulations (“the 2000 Regulations”). They impose certain functional or performance requirements in relation to —the construction of any building and to certain services and fittings in conjunction with any building;the structural alteration or extension of any building; andany building undergoing a material change of use. PART G49A dwelling or room for residential purposes shall be designed and constructed in such a way so as to provide reasonable resistance to the passage of sound from other parts of the same building outside the dwelling or room for residential purposes and from adjoining buildings.