The massive housing crisis we have today is a result of both Conservative and Labour policies since Thatcher became PM in 1979
Thatcher started the seeds of the crisis with RTB in 1980 then MIRAS in 1983
Blair continued RTB and he introduced buy to let.
Blair period also saw a deregulation of mortgage industry with self cert mortgages, expansion of 100% mortgages, and allowing people to have interest only mortgages.
Then the Tory period 2010 to around 2019 saw very low bank rates allowing people to over extend
Also there was massive QE which saw huge amounts of cash pushed into the system raising property values
The last 14 years have seen the big 6 housebuilders control the supply of housing and influence Tory govts to enable policies to get more people buying unaffordable homes
Ans of course we have the last 14 years of massive stagnation of wages combined with growth of insecure work contracts alongside an ever increasing number of people caught in the rent trap
But ultimately the greatest root cause of the housing crisis is the removal of millions of council houses from the housing stock which stabilises the market. And it’s the only thing that will now solve it.
Anybody who wants to make political point scoring by blaming just one side is on a hiding to nothing, because it’s simply untrue.