1. How should I depreciate this on the Schedule E? I'm assuming it's going to fall under: "Assets / Depreciation" -> "Rental real estate property" -> "Land improvements" ? No, this is not a land improvement, it is a building. Choose Residential Real Estate.
2. And if prompted to write off the entire amount using the special depreciation, I am allowed to, yes. No, this is depreciated over 27.5 years.