I have seen articles where he talks about it in addition to other taxes. The article actually quotes him as saying, "It’s a highly regressive tax. I see a big case for land and property and business taxation to be changed." Labour has done so well with property and business taxes so far...
That doesn't sound much like a replacement.
The biggest problem with a land value tax is that your tax bill can go up even when your income doesn't. People may not like stamp duty, but at least you only pay it when you buy. A land value tax keeps coming year after year regardless of whether you can actually afford it. If your house value rises but your income doesn't, where is the extra money supposed to come from?
To me, it's a tax on security. Instead of fixing the planning, housing and regulatory failures that pushed house prices up in the first place, the answer seems to be to tax the people living in them. The end result is that people on modest incomes get pushed into debt, downsizing or selling, while higher earners might resent it but can largely shrug off the effects. Having to sell the roof over your head to fund government spending? Make it make sense.
One thing that seems to get lost in these discussions is the assumption that house value equals wealth or profit. It doesn't. The amount a homeowner has invested in a property is often made up of the purchase price, mortgage interest, renovations, maintenance and other costs accumulated over many years.
Real profit is: Sale price − purchase price − mortgage interest − renovation costs − buying and selling costs − taxes
A £2 million house does not automatically mean £2 million of wealth, nor does it mean £2 million of profit.Much of that value may simply be the result of decades of mortgage payments, renovations, maintenance and careful spending. If the same money had been spent on holidays, cars or other day-to-day consumption, nobody would be calling it wealth. And If the issue is "wealth", then surely we should be looking at actual net wealth, not treating the total value of a home as if it were all profit.
And what is the message here? That ordinary people shouldn't be allowed to live in desirable areas unless they are wealthy? Or that buying a fixer-upper, spending years renovating it and/or staying there for decades is somehow a problem that needs fixing? Or that by daring to have something to show for your spending, you should pay higher taxes?
It's not progress, it's a race to the bottom dressed up as tax reform. Why aren't we growing the economy and building more homes so that more people can enjoy the same opportunities? Why is the solution always to pull people down rather than lift others up?