We're in the planning stages of a side return kitchen extension and I'm very keen to have a pocket door between the kitchen and the living room (where there is currently a door leading from the living room outside into the side return). From what I've read, it's near impossible to hollow out an existing plaster wall (our house is an old Victorian terrace), so we'd need to build a stud wall onto the old wall in order to create the pocket, i.e. the cavity that the door slides into. Is this correct? Is it possible?! Is it mega-expansive...?
TIA!