Note differences between comps (1 more bedroom, 300 less square footage, not located next to a toxic waste treatment plant, etc)3.

@Eric Fernwood Thanks for all the great info/visuals and all laid out amazingly!

Some negative visualization can help you get back to focus. 

., boiling water poured down the mound) or any one of the chemical treatments the big box stores have to deal with them.

I know visual inspection is a bunch of clues.

A letter from a licensed medical professional in the State where subject property sits that states that the specific emotional support animal is a part of tenant's treatment for a qualifying mental condition is the federal law.

@Timothy Burnes Don't do it. 10-20k in equity is not worth all those issues.Bed bugs are a significant defect that can take either $5000 and tenting the whole building for heat treatment, which requires vacating the tenants or getting them hotel rooms for a few nights, or a sustained program of prevention with bed risers, leg traps, sealed mattress bags, and the tenants need to keep it up for.. get ready for it.. 6 months, which is how long they can live without a meal.Sewage in the basement could be a big issue if you have a sewer backup problem.The sinking toilet sounds like it needs immediate attention, but at least that's a straightforward repair.The other issues are what I would consider "normal" as in, you could fix them but don't need to in order to make the place liveable.Based on the bed bugs alone I would avoid... if you are comfortable with this level of rehab you should be getting a way better deal. 

Seller said they got multiple offers, and I must admit house has a good visual appeal, but it doesn't come close to the expense of repairs.

Google satellite maps are helpful in visualizing how close subject is to risk but does not show which direction the flow will go.

I figured visually seeing the distress would be very helpful.