Looking to build a 15 sqm extension onto existing extension,will be knocking existing 4 meter external wall to join into house.old extension and new all done in trocal approx 45 sqm.3 new pvc Windows and 3.5 meter pvc sliding door to be added and pocket sliding doors from living room to new kitchen in load bearing wall,ope be roughly 1.6 meters.any ideas of rough price to include standard tiling,painting and electrics in new extension.location cork city