It also owns a 41% common equity interest in PS Business Parks ( PSB), which owns and operates commercial space, primarily flex, multi-tenant office and industrial space.

FORBES: Public Storage Still Has Room Left For More Gains

It also owns a 41% common equity interest in PS Business Parks Inc. ( PSB), which owns and operates commercial space, primarily flex, multi-tenant office and industrial space.

FORBES: Public Storage Still Has Room Left For More Gains

When you factor in some of the other common expenses like expensive commercial office space, perhaps sky-high midtown Manhattan office space, along with expensive travel, and the costs quickly add up.

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He said: "We have to rethink and redesign what our city centres are all about - and the city centre of Newport has taken a brave step in saying that maybe it's not just about retail, that it's not just about office space - it's about this kind of mixed activity, so dwelling spaces as well as commercial spaces".

BBC: Rise in shoppers in Newport despite store closures