Take your shirt off and paint your body blue.

And yes, there is much value in being able to see, touch, smell the property you're buying and renovating.

lolhttp://beta.biggerpockets.com/forums/223/topics/132989-deal-success-story-in-process-cash-flow-in-the-sf-bay-areaAnd just my 2 cents on your new property with the acre full of car/bodies.

There you will be able to see home much of your taxes go to each taxing body.

Also smelled weed in the property.Which option should I choose?

(Cleared environmental Phase I, New survey, and are at site plan stage and requesting a letter of commitment to permit from the governing body now).

Other things to consider would be insurance implications (make sure your policy will cover you, and you'll probably want extra liability coverage), zoning (most likely this would be allowable as a special or conditional use within a single family home zoning but you'll want to check that for your specific location for sure), potential noise complaints/issues with neighbors, required permits, annual inspections by the regulatory body, contingency plan for if the neighbor goes out of business/ files bankruptcy, etc. 

Only thing is they must be thoroughly cleaned as rats can smell extremely well and if I didn't clean them they wouldn't take the bait.

Keep in mind that a lot of brokerages you are a body to fill the seat and bring in income kinda like and MLM.

Look for dead bodies.