The estate agents do not form the prices, the prices of land are formed by the demand and supply meeting at an equilibrium. Estate agents are just there to help the supply meet demand. Estate agents cannot create true information about the value of some land, the price is still established between the actual seller and the actual buyer.
But according to you, one should still pay for a swamp that has no real profits to its owner, and that no one wants. Simply because some bureaucrat 1000km away decided he wanted more income, so he could get a higher wage.
Ha, what a fallacy. So in theory if you build a road through Sahara, every piece of land adjourning the road has now a higher value compared to the rest of Sahara? Because someone built infra near? :rofl:
The price of the land increases ONLY AND ONLY IF the demand keeps rising while supply does not; the real reason why a price rises.
Built a road in Antarctic, no one will still want to buy the land near the road! The demand stays at ZERO.
The infra in itself does not increase prices, but it can affect consumer preferences.
Lets say there is a 5% land tax given to every piece of land. The tax increase will be fully paid by the land owners, or if the land is rented, by those who are paying the rent. Unless of course people choose to rather become homeless than pay the rent. (some might have to, if they are already living on the limit of their income). Again the poor suffer most.
There is no free market competition if you just distorted the competition by levying a tax on land, the market reacts in a way that it would not do under free competition!
No, the landlord will kick the poorest guy out, and sell it to a higher bidder. Again, you can build an entire huge pretty town in the middle of nowhere, but if there is no demand, the land will still have a value of ZERO!
Again I state, the policies you advocate only result in the poor suffering much more.