>Builders buy larger plots and then use it to make multiple houses.
Most people that had their house built decades ago don't realize the requirements for things like runoff control in modern subdivisions. In the past your water was someone else's problem, which as populations grew lead to some people getting screwed when flood waters reached new heights because of all the new impermeable land. Water impounding and runoff control are very hard to build by an individual unless they have a large chunk of land (which acts as the sink). Any dense new SFH typically ends up in a MUD that provides all the utilities and water controls and this is insanely expensive unless distributed across a large number of units.
If we want to control housing prices it won't be by building more SFH. It will be by building more dense style housing.
Most people that had their house built decades ago don't realize the requirements for things like runoff control in modern subdivisions. In the past your water was someone else's problem, which as populations grew lead to some people getting screwed when flood waters reached new heights because of all the new impermeable land. Water impounding and runoff control are very hard to build by an individual unless they have a large chunk of land (which acts as the sink). Any dense new SFH typically ends up in a MUD that provides all the utilities and water controls and this is insanely expensive unless distributed across a large number of units.
If we want to control housing prices it won't be by building more SFH. It will be by building more dense style housing.