When a park's bridge loan rate cap expires mid-business-plan, who actually eats the cost

Never operated at fund scale, so the promote math and LP agreement mechanics are outside my lane. But the part about treating replacement cap cost as a tail scenario and then getting surprised, that I can speak to from a simpler version of the same problem.

What sticks out to me is your line about the GP absorbing the overage being framed as aligned. That framing does a lot of work when the dollar amount is still theoretical. I had a short bridge on five lots outside Seguin, assumed I'd be out in 18 months into a conventional takeout, and the takeout slid to month 26 because the county sat on an infrastructure sign-off I never built delay into. Not a cap expiration, just floating rate that kept floating while I waited. The reserve I had was sized for carrying costs only, not for the rate moving 200 basis points while I sat there. I came out okay but I netted about 11 grand less than I'd penciled, which on five lots in Guadalupe County is not a rounding error. Never modeled it, just assumed the timeline would hold. So before I ask you about the reserve structure, what does your infrastructure capex bucket actually look like mid-lot-fill, because in your post those two reserves seem like they're drawing from the same pool and I'd want to know which one loses when they compete.

The assumption doing the most work in most decks I see is that the replacement cap premium is a tail scenario rather than a base case line item. Given where rate cap pricing moved between 2021 and 2023, treating a month 18 to 24 unhedged window as low-probability is underwriting optimism, not conservatism.

On the three paths you named: the replacement cap route is the cleanest analytically because you can model a stressed premium at origination. The standard approach is to price the replacement as if current implied volatility persists and rate levels are flat to up, then run that number through the waterfall before you model any upside. The problem is that stressed replacement cap premiums in a rising vol environment can be 3x to 5x the original premium, and that swing is large enough to matter at the preferred return threshold. If your LP agreement treats it as a fund-level expense below the preferred return hurdle, the GP is effectively subsidizing LP protection, which is a structural issue that should be named in the PPM, not discovered at the extension conversation.

On the operating reserve question: per-pad reserve sizing in mobile home park bridge deals has to carry more weight than in other asset classes because lot fill lag compounds the cash drag. A park at 70 percent occupancy during value-add is running negative operating leverage on infrastructure costs that do not scale down with vacancy. Layering a replacement cap expense on top of that, funded from a reserve that was sized for capex and fill-lag, compresses the cushion in the window where you can least afford it. Conflating those two reserve purposes in a single line is a structuring problem.

The GP-absorbs-overage framing as alignment is worth examining. If the cap replacement cost is large enough to wipe the promote on a single asset without a disclosure trigger, that is a material economic change to the fund's fee structure that LPs arguably have an interest in seeing. Whether that triggers any disclosure obligation is a question for fund counsel, not this forum.

What does your LP agreement actually say about the expense classification, and has that been tested against the scenario where the replacement premium exceeds your original cap cost by more than 2x?