We also try not to install fridges with water dispensers or ice makers but if we do, we put in our rental agreement that tenant is responsible for any repair to water/ice makers. 

Plumbing is a great example - as an ex-plumber I'd take PEX over galvanized any day, and even over copper (at least the newer stuff) especially if you live where the water is somewhat acidic.

I'm used to multifamilies where each unit has its own water heater and furnace.  

Also there isn't as much appreciation in the area, it takes longer to evict (MUCH longer), and they have lien-able water and gas - so if someone skips out on the bill, it's on me as the property owner.My point is, high taxes are just one consideration but not an end all be all.

I have  water damage in one of my properties in MD, and the IA is playing hard ball.

Purchase price: $205,000 Cash invested: $27,112 Bought for $205,000 in the Maine-Endwell school districtMonthly rent (pro forma with 3 month stabilization) $4,800Taxes: $9,238Insurance: $2,642Gas/electric: $0 Water/sewer: $2,451Total expenses: $14,280 I used a conventional 10% down.

. - if the city water pressure is low in your area you might need a fire pump which could double the cost of your sprinkler system.

Have the furnace, A/C, water heater etc all on a schedule to have inspected and serviced.

You're treading in RESPA-infested waters there and these are federal, not state regulations.Referral fees for ANY closing services on residential loans are strictly prohibited under RESPA regulations. 

If so, new service to the building would more than likely be required independent of the existing domestic water line.