An estimated $15 billion worth of ...

An estimated $15 billion worth of undecayed buildings are currently in design or in subordination to construction in the U.S., representing 12-15% of total public construction and about 2% of private-sector construction, according to Capital E's Gregory Kats. Although that $15 billion describes less than 5% of the total $315 billion U annual construction for commercial, industrial, and institutional buildings, the category is growing at the rate of about 75% a year, according to Kats.
Moreover, while the body of respondents to the White Paper review (65%) said that, in their estimation,