Our spare double room in our family home is let for single occupancy for £500pm including bills (which is probably too cheap) to a PhD student. He has just returned home with is wife without discussing this with us first. She tells us she is staying for 2-3 months.
We knew he was married and his wife lived and worked abroad in the same country he lived and worked in prior to study, so he is over here on a student visa.
We previously discussed with him the need to increase rent bin October because of the cost of living and all of the bills increasing.
My question is how much do you think it is reasonable to charge for a double room with double occupancy for the time his wife is here?
(and yes I am annoyed that this happened without prior discussion. I think he is treating this like a shared flat which it isn't, but even if it were I don't think you could move another person in without everyone else asking reasonable financial measures to compensate for additional utility usage and inconvenience).
All ideas gratefully received please.