Adding a 1/2 bath, new roof, central air or other typical improvements will increase the value of the property. 

The house was vacant for 5 years with a new roof (5 years ago). 

Would you jump on this, or is the premium too steep?

The house's exterior is constructed of brick material with a flat tile roof.

Renovated the basement unit, new roof, new soffit/ facia, new gutters, new exterior paint that was paid for by seller.

Would you jump on this, or is the premium too steep?

Crime is thru the roof, homelessness, high taxes, etc. 

The road is too steep and isn't paved all the way.  

Stairs are the only way to get in, no grab rails in the bathroom, ramps that are too steep, etc.From what I've read, all commercial businesses/buildings (including ones before the ADA was passed) have to comply with the rules, unless it would be outrageously tough to fix (like installing an elevator in an already built building).Are all these local business just not complying and taking the risk, or am I missing something? 

Estimated cost for remaining changes (all new electric, drywall, tile, fixtures, cabinets, roof, doors, windows, heat pump, some siding, and fencing.