We are thinking of knocking through the wall between our living and dining room but this would mean losing the chimney in both rooms, there is just a gas fire in one room currently and the other has been bricked up. I've been doing some reading up as to what would be involved and a post on a different forum a few years back said that losing a chimney would potentially knock £££ off the value of the property. We are not thinking of selling up anytime soon so would it be worth it to have the bigger room we really want?