Location, off site assessments, density, product type to name a few, but this doesn't even graze the surface of raw land development.

Without knowing that, on the surface I would not have handled it the way you did.

The purpose of the suits are to prevent mold spores from attaching them selves to the people's clothes and then they take it home to contaminate their home and family.People with respiratory ailments are particularly susceptible to mold.Scrubbing and cleaning the surface does not always remove the mold as there can be mold on the back side of drywall ion the wall cavities. 

The laminate is very durable when it comes to surface scratches and other damages but not so much with water.

There is a bit of an "underground" heroin issue that surfaced last fall, but nothing that would spill over into the broader population to make the area feel unsafe. 

It has the advantage of feeling more like a house than most condos as it's single level and none of the living space adjoins other units (only the garage shares one wall with the neighbor's garage).

I would run this in the BP calculator for buy & hold but on the surface, it does not look like a fantastic deal. $5k rehab would be incredibly low, as in move-in ready and I saw you mentioned foundation work.

On the surface, his claim of quickly doubling your money sounded great.

My primary method to analyze deals just on the surface is to use the 1% Rule (Rent/Price >= 0.1). 

Was there an unrecorded easement, or an easement that only got recorded on the adjoining property?