The contractor is concerned about the party walls. I’m not too keen on them either, as it seems I could remove the mortar with a toothbrush it’s so sandy. The walls won’t be a problem he guessed in the next 20-30 years. But after that, who knows. How the heck do you fix a wall you share?
I really don’t believe this house was built that well to start with. There have been a couple of problems I found that I’m not sharing on the blog, for various reasons, that relate to the fact that mine was built for poor laborers by a single landlord. There were shortcuts made evident when walls were exposed. There are other things that make me wonder if the 1870ish landlord got these houses built fast and cheap.