So what's your magic way of solving the housing crisis?
There isn't a "magic" way so far as I know. Only the way that worked in the past.
If you look back to the decades after WW2 the state arranged to build many hundreds of thousands of affordable houses per year. The main mechanisms were allowing - indeed *requiring* - Councils to build them and rent them out. The second was a set of New Town 'Corporations' being enabled to build entire new towns of houses, etc, for both rent and sale. Most of these homes were built to a higher standard than in later decades, and the income went back to the Council / Corps who could use in-house workers to maintain and deal with them.
The results were cheaper to rent or buy, yet still gave most Councils / Corps enough income to payback the build costs and let them build *more* homes. It helped cut out dependence on big builders who could profit gouge or control supply. A mix of in-house and local labour could be used instead, and ground purchased at a price determined by the Council / Corp.
One reason this worked was that we also had a decent trade apprentice system, which again, Goverment helped to organise.
This all changed when Thatcher decided to allow the 'right to buy'. Which in itself was a good idea. The sting was forcing Councils to sell at a loss and then refuse to let them use even the low sum they got to pay for building new social housing. For some odd reason only Council tenants had this 'right to buy'. Somehow private tenants were regarded as a lesser breed who had no such right. No doubt unconnected with how many Tories and their rich mates were large-scale private house builders, renters, etc.
She also messed up the establshed support for apprenticeships, etc, and then Tory Plan B started pushing people into paying to go to Uni to learn 'media studies'. So our supply of trained and reliable skilled workers for the home and building trades got stabbed.
So there isn't a 'magic' way. But there is a real way which we have used in the past, and which other countries have continued to use. The result being that they don't all share our screwed-up housing arrangements which in turn mess up the rest of our economy and society.
Another advantage of the above system is that it enables us to spread out the housing and the jobs. That improves things in many ways. In particular taking the pressure off London and the way that sucks up more resources per person than elsewhere, yet gives many people who work in London a less pleasing place to live and work.
It isn't either 'magic' or 'perfect'. But it is a damn sight better than we've done since Thatcher came to power.