You get rich from keeping real estate, not selling it.

For example, hotels or short-term rental properties like Airbnb often generate more income than traditional apartments, especially if the location supports it.Entitlements and Approvals: Check whether your project fits within the land’s current zoning (by-right uses) or if it will require variances or rezoning.

TIf you're goal is to scale, they are an excellent option for while bypassing some of the stricter requirements of traditional financing.

It varies deal to deal, on one property maybe up to 65% LTV, but if you have more collateral the more likely they can make something work.For example, I've done numerous deals where we place a 2nd on 4-5 properties and the lender feels comfortable lending x amount of dollarsThese are very non traditional loans and no two will ever be the same.

If it does and you can't rent your house traditionally without covering $1,000 a month in costs, and you can't sell because the value isn't there, then you're in a pretty frustrating situation. 

.: Quote from @Erik Estrada: They are technically more expensive than a traditional 30 year fixed. 

Quote from @Rich Davis: Read the HUD guide.

Quote from @Chris Rich: Depends on your approach - cash flow or appreciation.

And the cheapest capital comes from traditional lenders, who will want good credit score and financial wherewithal from the borrower.  

The reality is the really rich have coastal properties and they're not going to accept nothing when it's wiped away even if they have hundreds of billions, there'll be recourse.