Article: How to spot a drug house

http://www.pe.com/2017/10/08/drug-houses-pose-danger-to-neighbors-homebuyers-police-heres-how-to-spot-them/

 This is how you spot a drug house:

"The owner of a rental property on Beechwood Place she represented was out of town, and she worried that the home was his. She was relieved to learn that it was not."

Key question:

Is it a rental?   
There is your answer if yes there's a high probability its a drug house.

Riverside County has come along way.  Back when it was common to find bathtubs used for cleaning parts.  The sofa in the garage was where people hung out. The living room was where they tore apart and rebuilt car/motorcycle engines.  Back then you couldn't be sure mechanic, or drug house.