In my opinion safest bet is Iron Bound, then much of the north ward minus a few blocks, and the rest are somewhat block by block and you really need to understand the micro neighborhoods and trends. 

Old cast iron sewer lines go bad, HVAC systems have to be replaced, roofs have to be replaced, tenants need to be evicted and you get back a trashed unit full of crap.  

Got any recommendations? Discovered clogged main sewage line in 1920s house. Need someone out here tomorrow to assess and fix. Thanks in advance!

Can someone help me more to iron out some ideas along those lines?  

Anytime a tenant cries wolf in saying they will call an attorney over some pathetic thing such as iron in the water it is a waste of your managers time, a liability for your property and all around just a pain in the arse.

Account Closed comment, depending on the demographics you can put in a laundromat (not a full-size one) and offer ancillary services like dry cleaning and ironing.

(About 1.5% of rent) (Usually a water heater every year and an ac unit every 2, everything else is under $200 plumber, landscaper, or handyman call.)If you’re painting houses or fences, replacing asphalt roofs, trimming/removing trees, in a market of 50-80 year old houses with cast iron pipes, water wells/septic, or other things like that your numbers will vary.

Bill Gulley - I find it somewhat ironic that I have read a number of your posts where you say that it's the intent, that if it walks like a duck and quacks like a duck it must be considered a duck - and that you have even posted elsewhere that a judge should see it that way.

Kind of ironic that you are referencing an academic's theory to support the theory that learning theory is *potentially counterproductive.

Ironically it was proposition 1a, the proposition system being the very mechanism for "informed" citizens decide important policies