9% Growth in Housing or a 4% Loss?

When the news flashed on my screen that housing construction had jumped by 9%, I raised an eyebrow. That did not make sense given other data I was looking at. Immediately the media was full of talking heads and stories about the turnaround in housing and the end of the slowdown. I must admit to being a little confused.

Then we find the rest of the story. Asha Bangalore from Northern Trust actually took the time to read the details. It turns out that New York City had a change in its construction codes, and that affected what is considered a housing start in the Northeast, especially in multi-family construction, which "jumped" 42% because of the code change. If it were not for the change, housing starts nationwide would have fallen by 4%. Because of the code change,  housing starts jumped 102% in the Northeast. However, single-family starts nationwide declined 9.3% in June, to an annual rate of 647,000 units. That level of single-family starts is the lowest since January 1991. Look at the following chart from Northern Trust. Does this look like a 9% increase?