Have full or partial interest in 60-odd rental units, so I'm OK but am casting about for how I want to deploy my time.

@stevemoore welcome aboard I agree with James the pod casts are awesome glad to see more locals

If you appreciate a post that a fellow member put up responding to you be sure to show them you liked it by casting a vote for it.

by casting a vote for it.

Wow, a reply from my biggest hero from my all-time favorite POD cast I listen to every week.Always so informative."

You will find resources here from blogs to pod casts and forums.

Roofs need extra layering material (to protect from all the ice and snow), many plumbing systems use cast-iron drains (which are tougher to tie into than PVC), many houses actually have wells for water (ours used to, and now we have to abandon it properly), electrical codes are different (this should actually help us), etc.

If the building still has knob-n-tube, you may have troubles with insurance.Similarly the plumbing could contain lead or galvanized pipe - both of which you will want to budget it replace - on the supply side and galvanized, cast iron or clay on the drain.  

There is months worth of reading an pod casts for you to go through.

But you will only find them by casting a broad net and sifting through all of the responses that you receive.You are correct.