This works OK for relatively static and simple investments like a private placement or crowdfund, but can become rather cumbersome and expensive with a more time sensitive and transaction intensive asset such as a rental property.

Maybe you want to sell in a sensitive area and buy in Seminole or North St.

Rates are sensitive to credit and LTVS. 

Hard money loans are time sensitive.

Majority of real estate developers use external funds be it equity/debt as high as 70-90% of total project cost in some cases, even though industry has various risks be it inflation, market conditions, finance, sensitivity but then there are many experts and technological tools, advancements to guide through various stages of project from inception-design-planning to execution and conclusion; Despite of all this, we keep reading about many developers fail to generate promised returns to lenders, few cases matters even become very sour to litigation, in turn making real estate investing as risky as it was decades ago.If business uses outside funds which is more available than earlier, what could be top reasons fair amount of projects fail to generate accepted returns(very common in developing countries).Thanks in advance.

NNN lease investments are particularly sensitive to tenant credit because they behave like bonds--the only difference being that the investor should also consider the value of the property if vacant.Vacancy RiskReturns are directly correlated to occupancy and rental revenue.

Thought I'd chime in on a couple things - rent increases usually aren't difficult with Section 8 but they may be time sensitive. 

Really easy to replace too, as long as the right pressure sensitive adhesive is used.

The only feature I see lacking at the moment is a sensitivity analysis.  

Should be some lease comps out there that can help you build a base case/downside sensitivity analysis.