Building suppliers aren’t popular with investors. Today, US housing market data revealed existing home prices fell by a record 9.5% in August. In Britain property sales are at their lowest for 50 years. Nevertheless, Tom Bulford says  Eleco (LON:ELCO) is a great contrarian play. The company has diverse profit stream from prison- and school-building programs, which should protect it from a recession.  With a P/E of over six and a yield of over 4%, Tom says this is a stock to watch.