> sure to get worse thanks to Trump's tariffs on steel, aluminum and canadian timber.

this[1] suggests that most New York City construction uses US steel and will be minimally affected by Trump's policy. Admittedly, basically all new construction is concrete and steel so it will undoubtedly be affected in some way by changes in the steel market.

1) http://www.crainsnewyork.com/article/20180306/REAL_ESTATE/18...