I'd rather that Parliament introduced specific laws to stop specific acts rather than try to control people via the back door through taxation.
outright bans can have other problems though.
Just look at the window tax a few centuries ago. The rulers wanted more tax revenue so decided to tax people according to how many windows they had. The effects are still clear to see today in old buildings where the owners simply bricked up windows to avoid the tax!
but that's the idea. Sometimes, reduced use is a perverse outcome of a tax. That happens when the intended purpose of a tax is to collect more revenue, but it just ends up reducing usage so you don't collect more revenue.
in this case, reduced usage is the intended outcome. We want people to reduce their buying.
At the moment, the local councils can't collect council tax because they don't know who the owners are of many empty properties that have been bought via overseas companies and trusts, their true ownership being hidden behind those trusts/companies
then they should find out! they are the government. They can make a tax and non payment can be find. In this case you don't have to find the individual if they don't pay. You know where the asset is!
it's already far too complicated
it doesn't need to be. Having a complicated tax code wasn't on one of Moses' tablets.