If you want to understand why the American starter home seems to have gone extinct, don’t look at greedy developers, rapacious investors or discriminating banks. Look at the government policies that make building these homes all but impossible. New research puts hard numbers on one part of the problem — and they’re staggering. …Federal, state and local governments have accelerated this decline by increasing construction costs through several channels. …In some cities, such as Los Angeles, the time it takes to get building permits amounts to almost half the construction time. …Land in many localities is made artificially expensive by regulations that dictate home sizes, yard sizes, building setbacks, parking and more. …Federal policies pile on more costs. …Canadian lumber, for example, is roughly 80% of all US imports and is currently subject to “trade remedy” taxes of more than 25%. Similar duties cover a wide range of products that US homebuilders use every day.