Even tough the APCHQ (Garantie des bâtiments résidentiels neufs de l'Association des professionnels de la construction et de l'habitation du Québec) existed well before January 1st of 2015, it has since then been merged to the GCR mandatory guarantee.
It should be noted that guarantees that were in effect at the time of the change are still effective and remain their administrators' responsability.
For further information, please visit the All about the warranties on new houses help tool.