Yes, but that's not the concern just the context. The real issue is that there's not been a maintenance agreement in place, and no maintenance has been done for ~20 years.
If there's no maintenance agreement in place how do I and the lender have confidence that necessary maintenance will be organised?
The same will apply to some extent whatever shared property you buy. I don't think formal maintenance arrangements are common unless you have a proper coprorate freeholder, and that's it's own bag of problems.
Are there specific maintenance issues that concern you?
Yes, but that's not the concern just the context. The real issue is that there's not been a maintenance agreement in place, and no maintenance has been done for ~20 years.
If there's no maintenance agreement in place how do I and the lender have confidence that necessary maintenance will be organised?