You'll never be able to stop a determined thief, but if you can make it slightly difficult, people won't bother.

HVAC, Dryer, Water Heater, Oven, Smoke Alarm system, things like that get their own lines.

My first thought was to change the batteries in a fire/smoke alarm, carbon monoxide detectors, etc. - or some other electronic device. 

I don't know, :-)I suspect that if it has running water, bathroom, electricty, ingress & egress, smoke alarms, passes code, and is approved by the city, why not? 

We do have alarms, so @Dawn Anastasi we might be able to create the late-rent nag you mentioned :) One of our goals for 2014 is to get the system market ready.

Only insure for an amount greater than you can afford and you will pay lower premiums and carry a risk you can handle.Some discounts to explore are multipolicy, tenant screening, claims free, carbon monoxide detector, smoke detector, alarm, deadbolts, fire extinguisher, using a property management company, age of home, new purchase, eviction search, requiring renters insurance for the tenant, and more depending on the company.

$1554 annual with an $83 charge back for an alarm system so that would come to $1637 per year without one.

Year 3 will Increase to $12,000Snow Removal/Landscaping - $3,600Trash - $10,476Dumpster License (one time) - $120Fire Alarm Certification - $2,750Rental License ($55 per unit) - $3,025Management 4% - $20,480

No alarms yet.

An alarm system doesn't deter the thieves, because they know that it'll take 15-20 minutes before the police comes.