Roof repairs to ex council block of flats in London

[Boudiccafight]

Does anyone have any experience of the mandatory roof renovations to their block of flats. The block is a mix of owner occupiers and council tenants. I was wondering how much each household has contributed to the works, is it financially ruinous?

https://www.lease-advice.org/faq/my-landlord-is-the-local-council-or-a-housing-association-they-are-planning-to-carry-out-a-lot-of-work-on-my-estate-leading-to-high-service-charge-bills-is-there-any-limit-on-how-much-i-can-be-asked/

Thanks that’s very useful, I’m planning on buying a flat with maximum mortgage and have found out about pending roof works, and wondering if it’s sustainable