FIRE engineering firm Mansion Holdings posted a 12 times increase in interim profit after tax to $20 million for the six months ended June 30 this year. Earnings per share on a fully diluted basis jumped 651 per cent to 6.31 cents from 0.84 cents. Turnover was up 74 per cent to $126 million. No interim dividend was recommended. Long-term contracts at the end of August this year amounted to $323 million. According to the Estimate Directory, Mansion Holdings will record a 102 per cent increase in profit after tax to $67 million for the year ended December 31, this year, against $33.1 million the previous year. Earnings per share would rise to 26 cents from 13 cents, it said.