Well some very interesting points raised here. I'm not even going to try to respond to each point raised (apologies). But here is a general reply.
1) This is not a scheme for tax evasion - as some have clearly pointed out the stamp duty is paid in full
2) Yes. The stamp duty will be calculated on the higher mortgage amount (a few hundred - not a concern)
3) I originally had in mind that once the mtg check is drawn down. A cheque by me made payable to the buyer is done immediately (or just prior) - whichever must be done first.
4) Arguments of the home being over-valued and that the bank may make a loss in the event of foreclosure is imo nonsense. The fundamental reason that 2nd hand properties now cost less than new ones is imo down to stamp-duty, and the inability of FTBs to come up with the necessary money "up-front", thus keeping prices lower than new homes. A new home bought for 400K and sold within a year could very likely make a loss as it would then be 2nd hand and subject to the economical factors described earlier. As stated in my original post, this is all subject to a valuer's report.
5) Mortgage repayments costing more - I don't think there is a FTB out there that wouldn't jump at the opportunity of a bank lending stamp duty on top of the purchase price (e.g. 105%), instead of having to pay far more for a home of lesser quality/size and further out of town etc. (and this is happening). As stated previously,the bank has already approved them for a mortgage of 400K which means as far as the bank is concerned, the repayments on 360K must be affordable to these buyers. Most resort to borrowing the money from credit unions etc at much higher interest rates and far higher monthly repayments (placing higher financial burdens on them)
6) Many banks are quite willing to accept a cash gift from a parent etc. to the buyer to make up the balance required. Why is this only acceptable from certain people? I could be selling the house to my nephew / grandson / brother in law etc etc. - What is stopping me giving the money to their parents and them gifting the money to the child buying the house? (This last point is merely to illustrate that there appear to be no hard and fast rules what-so-ever). My parents gave me 10K when I purchased the house, and the bank had no problem with this - they did not enquire how my parents came by the money - indeed for all they knew the vendor could have given the money to them or intended to on the day and as far as I can see this would have been perfectly legitimate and honest)
7) This is currently my PPR and not subject to CGT.
8) The Gift is below the tax threshold for Gifts - as pointed out by other posters.
9) These are 2 separate transactions, however they occur at the same time, perhaps in the same office (giving both parties the ability to cancel their respective cheque if there is any sign of dishonesty - as far as I can see anyway)
any other thoughts? Can you think of any other complications?