“Even over a longer period, how is someone on benefits/pension/low income supposed to afford tens of thousands of pounds?”
This is about Edinburgh in the 70s and 80s -
“
Back then there were 25 ‘Housing Action Areas’, designated to combat decaying building and living conditions. Five action areas were at the fringes of the New Town including St Stephen Street, where a three-bedroom flat could now set you back over £500,000.
“
https://www.edinburghnews.scotsman.com/news/opinion/how-dismal-1970s-edinburgh-was-transformed-one-worlds-best-cities-donald-anderson-1347171
The aim was to ‘modernise slums’ - adding bathrooms etc and do structural repairs to reduce the chance of demolition.
At the time, Robin Cook, newly an MP, wasn’t sure about it. He had previously been Chair of Housing. He even believed that streets such as Home Street might still have to come down in about 10 years (from then).
That article doesn’t mention the reason it was possible to upgrade/conserve a significant amount of housing - roughly from Gorgie to Easter Road - was because owners were entitled to 75% or 90% grants.
Little chance of that happening again unless Govs get serious about energy and insulation.