Kieran McCarthy: Where to locate the downstairs loo

A downstairs toilet might not be large but is most costly room per sq foot, writes Kieran McCarthy

The so-called ‘smallest room’ can do a lot if it is well-configured. Picture: iStock

Dear Kieran, 

I live in a three-bed semi-d in the suburbs. The house doesn’t have a downstairs toilet. Where is the best place to locate it?