This is quite long -
We recently purchased a property with a large unrenovated annex. The plan (made prior to purchase and in agreement with the PILs) is for the PILs to pay to convert the annex and they then move in for the rest of their lives (we are expecting 20+ years). They will sell their current home and dh and bil will get a significant share of the proceeds.
So the question is what is a fair financial arrangement so that neither brother loses out.
To add some figures : the cost of conversion is expected to be £150k, the immediate uplift in value after conversion £200k, we spent £150k more than we otherwise would to get a property with this annex. No further contribution is expected from the pils.
And to add some restrictions : we don't want either PILs or bil to own a share of the property and we don't want any family row at time of inheritance so either any true up needs to be made now or the position needs to be crystal clear in any will. Also we will not be able to sell up for the duration.
Any suggestions / thoughts gratefully received.
Thanks