BTM, it sounds awful.
The silver lining is a real mentoring opportunity. A quick recap from the classic negotiating book "Getting to Yes"
- separate the people from the problem;
- focus on interests rather than positions;
- generate a variety of options before settling on an agreement; and
- insist that the agreement be based on objective criteria.
(Note, DD hates it when I do things like this. So apologies to others. A copy might find its way into her Christmas stocking...)
To be honest if there is a bad small, it is likely that black mould will follow, causing the flat to be declared unfit for human habitation and they will want to leave anyway. (Or they will spend the winter being sick.) Their best bet is to hit the phones and use the University accommodation to see if there is anything else out there, either short term or long term. The negotiation then is for them to get their deposits and pre-paid rent back. Or that the landlord pays for the temporary accommodation.
His interest will be to keep them. It is a big ask to expect tenants to stay during major building works. However he won't want a void until next summer, so may help facilitate temporary accommodation. Or he needs to get advice on how to manage the impact of the damp, as well as addressing the root cause and reassure them that it will be safe.
DM died last week after a decade of dementia. Old Irish Lancastrian roots, though her dad was a Headmaster of a Catholic boys school most of her aunts, uncles and cousins worked in the pits or mills. My Granddad was a Director of Wigan Rugby Club and apparently used to sit in old Dave Whelans sports shop on a Saturday morning helping to pick the team that would play that afternoon. My mum read maths at Oxford, rowed in the first ever woman's boat and later worked at the National Physics Laboratory on the ACE1 computer, which is now part of the exhibition of the 20th century in the Science Museum. She used to calculate angles of incidence for bouncing bombs.
I don't have any links left with the north. (My Godmother died last year.) A pity as I remember visiting pit villages where every cottage seemed to house members of the family.