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Do I need approval to insert cavity wall insulation?

Yes, you are required to submit a Building Notice but there is no fee payable.

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Contact us

Building Control
Tel : 028 9027 0650 (general enquiries)
028 9027 0432 (technical helpline)
078 5049 9622 (out of hours emergencies)
buildingcontrol@belfastcity.gov.uk