What shall we do in order to solve the trust issue? Without blockchain those investors might be co-owners of a newly created Stock Company. They could have ownership or lend as a guarantee. Also all the responsibility will be referred to the manager of the Entity. If we monetize the apartment than the IRS will see that person X is the owner and he could`ve sold all of his tokens and still be the single owner.
IRS structure isn't a problem because the profits can be passed through to the owners. I don't have an answer yet to how can we tokenize such assets, but it surely seems to be call of future.