You could probably make exceptions to the high tax rate for high density commercial real estate ownership so you could own a suite of offices without it kicking

You could probably make exceptions to the high tax rate for high density commercial real estate ownership so you could own a suite of offices without it kicking in as well as providing temporary tax brakes (as in, for X years after construction) to people who own multiple homes in a single new development. That way people investing in the construction of new apartment buildings aren't paying extra tax so long as they sell them in say, 5 years.