The house I'm buying, built in 1900, end terrace, has come back with stacks of 3s. Is that usual with this type of property. The most concerning are the lack of fire escape routes, the attic door is no longer compliant and I need fire escape windows to attic and back bedroom. Anyone had this done? I'm in South Yorkshire. It's not just the cost it's also findng a good company. With all the other 3s (chimney needs repointing urgently) just feeling overwhelmed with buying