Joint use of building(s) by youth centre(s) & day centre(s)
This could be Council rather than VCS led. Older people's centres are typically used 9-4 weekdays; youth centres 4-10 weekdays & weekends. Adjust hours a little and co-locate. This is long term, re-provision idea as property is re-shuffled, modernised - refurbs necessary to allow shared use. Sell site (s), better use existing site (s), encouraging inter-generational work (e.g. IT, make do & mend, volunteering) give added value.