In the fifth episode, Julia is reaching the final strait of her Portuguese project but her budget takes a hit when she is informed that the Little Blue House must be rewired.Designer Max heads to Portugal to design and build a new staircase for the home but when he arrives the workmen have some bad news – the property has not been connected to the mains sewerage and they have uncovered 30 years' worth of excrement in a pit underneath the property. Max and the workmen need to deal with this smelly problem before calling in an emergency plumber to install new pipes.Julia travels to Hungary's Lake Balaton to meet Jon from Ipswich who bought a three-bed cottage with garden and adjoining fields for £5,700. As a builder, Jon was able to do all the work himself with help from his partner and they completed the renovation in just over three weeks for a total of £6,540.Back in the UK, Max has also been busy building his own mobile holiday home. The quirky retro design includes an outdoor shower made out of a watering can and a fridge made out of a terracotta pot. The home on wheels even has a woodburning stove. Max gives Julia a guided tour of his project - but has he come in on budget?