> It also assumes that NIMBYism remains at the same level, which is challenging, as every new build or development nearby increases your own taxes. It would also encourage the childless to fight things like schools, as they would pay extra tax having them nearby.
This is the same as the existing tax system, where tax is proportional to (land value + buildings' value).
> High levels of displacement and instability.
Taxes would rise on undeveloped or underdeveloped properties, and fall on developed properties. The net effect would be an increase in total housing stock, as the relative cost of building and owning more units goes down.
> The proponents of this I have met are generally wanting to use it force seniors with paid off homes out of them so they can live in them instead (or often build on them, as they are property developers).
An LVT wouldn't have to work this way. The transition could be something like, set the LVT for each property the same as its current tax under the old system. But any future change in the value of buildings on the property don't affect its tax. This would mean seniors could continue paying the same tax they used to, while developers wouldn't get penalized for building more housing.