The impact to society of young people having to move away for work and accommodation is huge.
There is no way my kids will be able to afford to live in our city with prices the way they are. So, if they have kids my grandchildren will be away, and when we are elderly we will be isolated.
I see this happening now with my own parents. They are only an hour away from me - but they would need to consider moving nearer us now (in their 70s) to build up a social network here before they are less able in order for us to be able to provide support as needed. And why would they do that? They are both fit, sociable, busy and having a ball where they are.
Realistically, an ageing population, fewer tax payers, zero planning for residential homes and an unknown economic impact of Brexit - means older or frail people will have fewer choices about where to live than they do now. Which is why, when we did an extension, the kitchen became a massive bathroom with space for a hoist and a double sized shower. Just incase.
The kids (currently teens) all have their own room, there's a "family room" which could be a downstairs bedroom which is accessible to the outside.
I feel we are future proof as long as it's only one set of grandparents wanting to move in - but, ONLY because of luck - we both had flats sold at the boom and bought a doer-upper which took us 15 years because we did bit by bit until we could afford a second mortgage for the extension.
Our parents are baby boomers and so both sets are sitting on large sums of money. They can fund their own care packages, but be here - if that's what they want.
A lot of luck, a bit of planning and a large dollop of cynicism that the government has a fiscally sound plan means that my family has options.
Here's hoping we don't all hate each other when we're living like Charlie Bucket's family...