Notch7, Valuing land is easy, estate agents do it all the time. In Australia the land values are online. Land Value Tax takes speculations (misconstrued as investment) out of the land equation.
We had a world-wide crash in 2008. What went wrong?
Debt after debt was poured into land. Because land kept increasing in value, so it was a safe bet to lend against. Speculators, big and small raced into land (property). The land matket toppled and took the rest down. In the run up to the 1929 crash land values soured as well. Land is unique. It is not a capital item like car or dishwasher. You can take cheap washing machines from Newcastle to London, but you cannot take cheap land. It is a location.
The business cycle follows the land cycle. The land cycle is approx 18 years (upset by wars and natural disasters). Halt the land cycle and we have economic stability. Something Martin Wolf of the FT advocates, as does Stigliz, etc.
How do you halt the land cycle?
You have to take unique land out of the sights of speculators. This is done by implementing Land Value Tax, on all land. A simple tax shift. LVT replaces Council Tax and can remove income tax (a penalty on production) if set high enough. Enterprise will flourish, the free market will operate as it should with economic stability. Land Value Tax is zero tax on the buildings. HMG need not greatly interfere with the economy as it will be self regulating. LVT cannot be avoided as land cannot be taken offshore.
John McDonnell wants to replace Council Tax with LVT. He also is to promote the formation of co-ops - the workers owning the companies operating in the free market with profits returning to them. John Lewis is a co-op employing 90,000 people. He is the only finance man to speak any sense in my lifetime. Labour had LVT in their manifesto in 1945, but never implemented it. They had it in the 1930s but the Tories in the coalition scuppered it. Liberals have had in their sight for along time, The Greens firmly in their sights. Even some Tories are for it, Boles comes to mind. But the Tories (buffoon Johnson) put out lies in the last election saying LVT was a garden tax - which is complete tripe. The Tories tax bedrooms.