Though I haven't converted any of our units into short term rentals as of yet, we tested the waters two years ago by renting out our own unit while travelling abroad and it was fully booked in no time . 

When I first started doing lending in Detroit.. this was an issue ... my client a big time flipper rehabber always had retired cops there with a clip board to check in the workers.. it was determined early on that much of the theft came from the exact guys that put the stuff in during the day.. they had the codes they knew what was there they would come in at night and steal it .the day cop and clip board put that to bed.So I agree with @Bryan Bannach  hire a retired policemen have him there during construction hours its the cost of owing property in the hood.. nothing unique about this.or just sell the property and buy something else.. but I think your looking to assemble so I know you probably don't want to sell.so just as stated hire security and I really like the idea of the @Patrick Liska  Cinder block fence I would for sure do that.. then put broken bottles in the concrete on top..

I've never thought of that... if you have enough leads, I'd suggest to do an A/B test.9.

(Hopefully you left it in Referral Status, so you don't have to take the test all over again).

Suggest you get on the state realtor license bureau finding out specific testing requirements..

The tests for legitimacy largely remain the same.

On a central AC, one of the most important tests to be sure your contractor performs is a micron test to ensure the moisture in the refrigerant lines is removed.

In our area a/c permit now needs a leakage test witnessed by City inspector. 80% of homes built since 1970s here do not pass leakage test.

Having a hygienist come in and test is step one and that'll run us about $700.

Inspectors usually don't test if the valve will properly close all the way.