Of course they do. The ability of people to have 'buy to let' mortgages creates artificial demand for the purchase of houses which drives price inflation, and to complete the cycle drives more people into needing to rent privately.
I agree on your second paragraph though, there needs to be significant provision of social housing in all areas of England. I don't know why the government is relying on the big housebuilders to reverse their own business models and build en masse, it just will not happen.
It’s not artificial demand if there’s a general shortage of housing. The housing deficit was at 1.5m or so and has grown since.
Angela Rayner was tied in knots when a Sky journalist pointed out that even if Labour met the 1.5m house building target, if there is 2.5m million arrivals as the government projects… its not improving the housing situation. It’s probably not coincidence that after this, her internal memos suggested cutting benefits for migrants.
The housing shortage inflates pricing, which favours home owners / landlords who can leverage their assets and positive equity to take credit to expand. Likewise, with housing associations. So I understand the more left wing arguments but it ignores the elephant in the room: net migration is growing at a higher rate than houses being built. Especially when there are areas up and down the country where social housing is disproportionately taken up by people born abroad (47.6% in London). This extends to various public services like policing, GPs, hospitals and so on.
Temperamentally, I’m v pro-immigration but it’s clear that our systems are inherently broken and the current level of net migration is unsustainable.
There is a model for left wing governments to follow on this: Denmark (and even Old Labour trade unionist approaches to migration).