Would you or wouldn't you?
In a nutshell: mum's the freeholder for her property (worth approx. 500k, mortgaged to the extent of 100k and currently on interest only for tax reasons).
She would love me to take it over, pay out my sister (who can't afford it) and rent it back to her at the price of the mortgage payment.
Not sure if I should, TBH:
On the upside: it's a large semi in good condition, large garden, nice neighbourhood, definitely not something I'd have trouble ever renting out or selling on. There's a reasonably large amount of equity in it. And it comes with a piece of agricultural land and forest that I'm emotionally attached to (but don't have personal use for given my non-existing skill and interest in dairy farming - currently on a 20-year lease to a local farmer).
On the downside, it's in a village where I never ever plan on ever living again. I'd have to re-mortgage it to the extent of about 70k in order to pay my sister her 250k share. And with mum wanting to live in it, it'd not be generating an immediate profit for me. In fact, I might have problems selling it if I fall on hard times if she insists on staying.
Bottom line: might be a good move financially in the long term, but would tie down most of my savings and I'd have limited control over my options to re-liquify (short of selling the place I live in - arguably not an ideal move).
There's also the fact that I'd have my own mother as a tenant paying well below market value with all the potential for family conflict this entails - and, OTOH, the fact that saying no would mean going against her wishes (a whole other can of worms).
I'm really torn ... WWYD?