The argument isn't about building code (e.g. safety standards) but more so zoning about neighborhood character. The author's point is that the type of higher de

The argument isn't about building code (e.g. safety standards) but more so zoning about neighborhood character. The author's point is that the type of higher density housing that actually makes up Somerville could not be built under current zoning laws even if safe and allowed under modern building code. Now, it's entirely possible the dataset the author is using to justify his position actually covers things that are safety issues.