Using a barbecue in the City of Brussels is permitted under certain conditions.
Barbecue at home
The use of a grill is described in the police regulation of the City under Section 7 (fire and smoke), Article 33:
Barbecues are exclusively allowed in private gardens and on private courts and terraces if they are fixed or mobile barbecue sets that are adapted to the local conditions and for as far as they do not endanger the safety and do not hinder the neighborhood.
Except after the authorization of the competent authorities, barbecues are prohibited in public spaces.
A barbecue on a balcony, a platform or a roof is thus not allowed. Barbecues are also not allowed on the public road, except after authorization of the Mayor and on the conditions imposed by the fire brigade.
Parks
In green spaces, flames and thus barbecues are prohibited.