Hi Dave,
To be honest he hasn't gone into to much detail but im pretty sure to be seen as being fair because i'm 1 of 6 children! Im the only one who is in a position to do this, so wants to be seen as being as fair as possible, maybe on his death i get the freehold and my siblings get my share of inheritance, no idea what his thinking is at the moment, all assumptions, i think if leasing means i can't get any of the land value would mean gifting the land and we have a separate agreement between us siblings, who knows, so in my head it might be ruling out the idea of leasing the land so he can say he tried that angle...not sure if any of this makes sense!
Must admit im not sure of there is any immediate benefit of him leasing me the land as you say? Unless its so he can say to my siblings he hasn't given me the land, plus he wont be helping me financially with the build either...
Cheers