[anticensor]

Allow up to 1 apartment or 3 separate units of house ownership per person. And only allow 1 unit vacant per apartment after the initial year after the construction, or multiple units up to 3 months per 5 years (must be simultaneous in all affected units with a tolerance of 15 days from either side to the simultaneity, no tolerance to the per-unit duration, or should be considered intentional vacancy) for maintenance and remodelling.