easypeasy

Hi! I am new to renotalk : ) I would like to seek the advise of all if you know we are able to hack away a bedroom wall in old HDB 4 room flat? (30 years old) We bought a resale flat and want to hack off one bedroom to create bigger living room, but was told by one contractor this will highly likely not be approved by HDB as it is a prefab wall. Is this true? I saw many photos on website that shows hacked off walls in HDB flats and had always this is doable : ) Thank you for your advise !!