caption: PIC BY MERCURY PRESS (PICTURED Potter, Mary Rose Young, 61 has made her £500,000 home unsellable with her eccentric, colourful decor) A woman who spent more than 30 years turning her rundown cottage into a life-size doll house says her colourful decoration has made the house - which should be worth upwards of half a million pounds - unsellable.  Potter, Mary Rose Young, 61, has been painting the beautiful country cottage in leafy Lydney, Gloucs in her electric style by hand since 1987, when she bought the former squatter's house for just £30,000. After 27 years in the house, she put it on the market in 2014, where estate agents said the property should have been expected to fetch at least £500,000. But despite hoping to sell the property to open a B&B nearby, estate agents could only persuade one person to view the house - leaving the family stuck there. SEE MERCURY COPY