@Benjamin Summers
(Sorry, technical difficulties on prior post...)
Your information on derivatives is good but other than the call option (known simply as an "option" in real estate parlance) I'm not sure how puts or straddles can be applied to real estate investment.
The problem with real estate versus the US financial markets (where these financial derivatives were "derived") is that, unlike publicly traded companies, public information on real estate is imperfect, so bad in fact, that for a commercial deal to transact it takes 30-60 days of due diligence by the buyer.
The only way for these derivatives to have any type of reasonable liquidity is to have professionals perform standardized due diligence and publicly share the information to all parties. Most owners don't want to have their building picked apart by a professional appraiser, building inspector, pest inspector, environmental inspector, etc- because it can hurt their potential market value. (They would rather take their chances with a buyer that is less detail-oriented). Plus, who would pay for that cost - which could easily run several $000's?!
Thinking through this a little further, there MAY be someone willing to pay for these costs in order to get financing - a sponsor that raises funds through crowdfunding. Many crowdfunding portals already perform a portion of this due diligence when they list an offering. For a few thousand dollars more, they could do a fairly complete job of the due diligence and create a standardized report on the asset. With this report a reasonable market participant could estimate the underlying value of the property. Then, the crowdfunding portal could offer an exchange for a) the underlying crowdfunded asset (debt or equity share), and b) derivatives tied to these asset values.
One issue with these derivatives is that the duration of the crowdfunded asset (debt or equity share) has a limited and unknown lifespan. Derivatives that expire after the entity dissolves and the crowdfunded asset has been settled will have no value. This uncertainty would ensure very few market participants.
Another issue with a derivatives market is the information asymmetry between the sponsor and the investors. Not only does the sponsor have substantial inside information on changes to the asset value, but the sponsor has full control over the asset and can sell it, refinance it or otherwise manipulate its value. Why does that matter since the sponsor has a financial interest in the success of the project won't he/she make the best decisions to increase the return to investors? With derivatives, especially options, a sponsor (or his/her surrogate) could make more money trading in the secondary market than the sponsor could make on the original fees/carried interest from the deal. Thus the issue of insider trading becomes something that may have to be regulated just like in the public markets.