I always wondered how a house became owned by OSI, I thought they were ones that got a Ban, like the ones that get burned.
Then i read this at uoguide,
steps:
6. In Danger Of Collapsing
7. Demolition Pending
"If a house "In Danger of Collapsing" has vendors in it at the time of collapse, it will enter a "Demolition Pending" phase and appear as being owned by OSI."
Sounds like something broken in code, or newer code that's missing checks in that last stage. Isn't this similar for the WBTB houses?
Maybe it's not an editable module, and manual deletion, one by one, is the only answer, an ubber secret because it's not that they don't know how or wouldn't, They Can't.
Start a thread in the Bug Section, co-ords, shard, facet, etc. so not only will others know which ones are on the list, but documented dating - wonder which program they use for location finding?