Construction is set to endure a “perfect storm” over the next 18 months, according to analysts with a rise in private housing offset by a 23% fall in public housing this year. The Construction Products Association (CPA) forecasts construction output to fall by almost 6% over the next two years, before a return to growth in 2014. On housing, it’s a mixed picture, with the private market continuing to recover from its nadir in 2009 when housing starts fell to their lowest level sin...