Negative equity mortgages are a very bad idea. They would be suitable in so few cases, that I think it's right to ban them.
People who have to move, can rent out their home and rent another. They should not buy another until they are in a position to do so.
Alternatively, banks should be encouraged to allow people in negative equity to sell as long as they agree to pay off the shortfall.
Brendan, your views on this matter are so dismissive of the problems facing many people in NE that I am groaning that you were a member of the government's expert group on mortgages. Your views should be challenged in the strongest possible terms, in my opinion, because you are completely oblivious to the nature of the problems facing some people in NE. You are out of touch with their situations. If your attitude is representative of the overall attitude displayed by that expert group at its meetings, then it is no wonder that some people trapped by NE feel so dispirited. They will never see a glimmer of hope as long as the government and financial regulator listens to this sort of advice....
Explain to me how NE portability is a bad idea for someone who is properly stress-tested on a mortgage that is within their affordability limits? Explain how this is bad for society? The bank is already on the hook for the NE anyway (the existing mortgage is already one of the "negative equity mortgages" you are so opposed to.... something that gets lost in this argument).
You are also assuming that their total indebtedness will always rise. But you forget that property prices have fallen by at least 50% since the height of the boom. Once you have saved a deposit, it is possible to "trade up" to a more suitable property for raising a family, carry the NE over, and still keep the overall debt exposure at near the original level.
Take a couple on combined salaries of 150k. Bought a 100% mortgaged apartment at the top of market for 400k, now worth 200k, have paid 25k off the mortgage.... that's NE of 175k.... they have savings of 50k (I'd surmise there are lots of couples like this in modern Ireland)
They'd be decades trying to pay the NE off before they would be able to move, under your proposals.... Their kids would be grown up before they'd have a more suitable family home.
They could probably buy a three-bed home nowadays for 300k in most areas of Dublin, using a 250k mortgage and their savings of 50k. Carrying over their NE of 175k would give them an overall loan of 425k..... only a fraction above their original loan amount..... and their NE has been reduced to 125k... I cannot see why anybody in their right mind would be opposed to this....
Telling people to become landlords (i.e. property investors) is not a solution at all.... they then have to run all the risks that all investors run, plus they lose their TRS, they have to register with PRTB, they become liable for tax on the rental income, they don't have fixed tenancy in their rental home beyond 4 years (and for anyone raising a family, that is unsuitable) and they run the risk of having to heavily subsidise a potentially-empty home that they have been forced to rent out.
People in NE have enough worries - they do not want to become landlords on top of everything else.... All they want is portability, not financial assistance, or haircuts, or write-offs or to be over borrowed, or to be forced into becoming property investors...
Also, if you make people take out large personal loans to pay off NE, they crystalise the loss. If you allow them to port it to another property, at least future property price rises will help inflate the NE away.
You say that the number of people in this situation - trapped but otherwise able to afford a bigger house - is so small, it makes sense to ban them. That attitude makes no sense to me at all... The effect on these couples of NE is so large, that every effort should be made to help them. And if their numbers are small, as you say, it should not be difficult to help them.
Personally, I believe there are more of them than you think.......
The 'expert' group you were a part of advised allowing NE mortgages only for people who were trading down. I remember reading that, and thinking that I had never read anything so out of touch with people's current needs in my entire life.....