Is their claim of radiation real or just an excuse not to install smart meters.
Smart meters emit no more radiation than old meters.
You also have a choice whether to entertain the invitation from your energy retailer to install smart meters. But the regulator has decreed that by 2029 all old meters must be replaced by smart meters. Better to do the changeover on your timing.
Relocationof meters would be a shared expense between all 4 lots. Remember in strata it’s the majority that has the sway. Even if one lot disagrees with a relocation, the majority prevail.
You could look at relocating the meters within each lot. Smart meters an be read by radio,so access to them is not required.
Still some cost involved.