Imagine a world in which the price of housing stopped rising as predictably as a hydrogen-filled balloon.
And imagine a country in which houses would be just as affordable in 10 years' time as they were 10 years ago.
There would be no race to buy a home, no fear that prices would accelerate faster than you can save up for the deposit.
Houses would cease to be a means of profit, and instead become just a place to live.
But this is no John Lennon-inspired fantasy.
It is about to come to fruition in the East End of London, in an extraordinary experiment.
For the first time, future property prices will be tied to the rise in wages.
'Life changing'
In a couple of weeks the first of 23 families will move in to an old mental health hospital in Tower Hamlets that has been converted into flats. They will pay a third of market value.
When they come to sell, the price they are allowed to charge will be limited by the increase in local wages, as measured by the Office for National Statistics.
Amongst the buyers are Rachael and Nathaniel Evans and their young son Griffin.
Despite their joint income of £33,000, and savings of nearly £70,000, they have been unable to afford anything in the area.
But now, thanks to the local Community Land Trust (CLT), they will soon be moving into a home of their own.
"It is amazing. It is life-changing for us," says Nathaniel, who has lived in Tower Hamlets all his life.
"I imagine walking into the flat and thinking, 'this is ours,' and we don't have to leave."
Link to wages
But the wage link is significant.
When Rachael and Nathaniel eventually decide to sell, their property's value will not have gone up in line with the market.
Typically, wages have risen by less than 2% a year over the last decade, dipping as low as 0.7% as recently as June 2014.
At the same time, despite a few dips, house prices have soared by up to 9%, easily outpacing wages.
If that trend continues, the relative value of their flat will decline, making it hard for them to move elsewhere.
As a result, linking house prices to wages requires a very different attitude, says Calum Green, co-director of the London CLT.
"These homes should be considered homes, not assets," he tells the BBC.
"It should be a place where you want to live for many, many years. It's not all about ladders and working your way up."