Cost segregation changed the year-one depreciation number by $340,000 on a $2.1M industrial acquisition, and the sponsor's LP update mentioned none of it.
The K-1 showed the loss. The update talked about occupancy and debt service coverage. Not one LP would have known to connect the two, which means not one LP could have asked whether the study was timed correctly, who ordered it, or whether the engineer had any relationship to the sponsor. A $340,000 swing in paper loss flows through to LP tax returns and potentially changes the after-tax yield calculation that made the deal attractive in the first place, and the quarterly update treated it as an internal accounting event. The assumption doing the most work in most LP relationships is that sponsors will surface anything affecting investor economics without being asked. Cost segregation outcomes, amended K-1s, and mid-hold refinancing proceeds that reset depreciation basis are three places where that assumption reliably fails. The question I would put to this room is whether LP updates in your deals name the specific tax event and its Schedule K-1 line, or whether you leave that to the CPA and consider it out of scope. Because if it is out of scope, you are leaving LPs to discover something significant at tax time with no context, which is exactly when they call with the least charitable interpretation of the silence.