The built-in bar has been ranked as the worst furniture fad of the last 30 years.According to research by Post Office Mortgages, the feature received the most votes in its poll to find the most regrettable home furniture additions of recent decades.Other crimes against design were mock fireplaces, animal print rugs and black ash furniture - all of which featured in the poll top ten.Artex walls topped the poll for worst interior design fad of the last 30 years, meanwhile.The research also found that under 34s are the most willing to see past dodgy DIY and interior design faux-pas in order to secure a bargain, with 51 per cent saying they would walk away from a property because of botched DIY jobs compared to 69 per cent of over 55s.Last week, meanwhile, a recent article by Franke Sinks, which was hosted on lonad.com, argued that the classic work triangle should still be regarded as the ground plan basis for new kitchen designs.