There are 9 billion people in the world, roughly half of them are perfectly capable of doing manual labor.
There is plenty of skilled labor, and the cost is frankly not that high, you just need to let them work.
Can we be serious here? There is one and only one cause of "high housing prices" and that is a political choice to make housing expensive.
Don't tell people what they can or can't do with their property.
Don't prevent people from being brought in to build stuff.
Do these 2 things and housing will be built if the price is truly high. Anything else is bullshit.