@Chris Dengel I have done 5 or 6 of these now for clients. Usually I'm doing them for business owners who also own their buildings so accelerating depreciation in the rental company, and raising rents on the S Corporation has been an extremely lucrative model. The major piece of this is the partial disposition regulations. Under prior regulations, if you bought a building and replaced the roof you'd be depreciating both the old and the new. Under new regulations, you can do a partial disposition. You identify the original purchase price of that roof as a percentage of the total acquisition cost. When you replace the roof, you dispose of the old roof, and start depreciating the new roof. This adds incredible tax savings. $15k for buildings under a million is a rip off. Engineering firms will charge you that. I did one recently for $6,000 that was a purchase price just under a million. The building owner generated great benefit, I made money for my firm, and the software company, Titan Echo, made some on their software. Seemed like a win across the board to me. Discuss with your CPA for sure! If this isn't something they offer it's a great add on service that is relatively straightforward, although time consuming, to learn and perform.