Run owner reports.After testing a few apps, one of them should stand out for you.

My doctor tells me that I have high cholesterol, clogged arteries, that I am overweight, and I need a bunch of expensive tests.

Quote from @David Bitton: Hey @Tyler Schmick, thank you for testing out DoorLoop and sharing your feedback.I am David Bitton, one of the co-founders at DoorLoop. 

And if you need some "outside" agency approval, like state road access, wetlands, stream crossing, perk tests, hydrogeological study, from either state or Federal agencies add more time. 

as Update to this post from 6 years ago, there are heloc's on owner occupied 2-4 unit properties up to 89.90% CLTV or combined loan to values (meaning multiple loans but all together not exceeding 90% of the value).Terms typically areinterest only first 10 years and drawable from the lineyears 11-30 its Principal and interest payment Prime index/rate + margin (this portion is fixed but prime is not)underwriting is done assume prime + margin + 2% stress test for underwriting meaning if your prime + margin was 10% then your underwriting rate used to determine your maximum line you can qualify for would be 12% rate as an example based on principal and interest payment over 30 years or 360 monthsIncome is the main determinant of your qualification and fico min 680+ is just the min score to get through the "front door,"Maximum DTI or debt to income allowed is 45% DTIMaximum lines on this product go from 500-750k so you can get a decent line size that can actually buy other BRRR's or fix flips and deals.

If you have 2 phones, FaceTime with outlet test device plugged into outlet with one FaceTime displaying the outlet test device works far better than the $hitty device that is supposed to Make this easy.  

I need to be able to update on the listing platform in real-time.I have tested Guesty, Owner-Rez, Uplisting, lodgify and Hospitable.I now use Hospitable and SWEAR by it.

"Viable business model" is in the eye of the beholder.Mold can only be detected through a lab test.

I do believe this system has never been tested from litigation.

Test and refine your communication plan—it pays off!