Yeah there wasn't much valuables...just a few staging items (towels, plants), and basic appliances (oven, fridge, washer/dryer). Blinds hadn't been put in yet so it was clear the house was empty, no reason for an ordinary "thief" to do this. The way the house is built and the property goes none of the appliances are visible from outside (without a ladder).
Yes, not only were locks changed, but completely new doors were installed as well (including frames in many). They pretty much took a sledge hammer to the steel front door and smashed it to heck before the frame finally shattered and gave out.
And yeah this was a bunch of asshole renters who refused to pay and managed to leech off the property for over 6 months. They destroyed the place before moving out. They broke windows, smashed doors/frames/sheetrock, drilled holes and drove large nails and screws into everything, crapped and pissed on everything then smeared on thick black grease. They got creative with some kind of BB gun and fired hundreds of rounds inside the house into the walls etc.
The only things that were salvageable were the shower stalls (after serious refurbishing) and some of the kitchen cabinets. The counter tops were ruined, vanities, toilets, sinks, faucets, everything else was destroyed.
Of course insurance wont cover most of this stuff, it's "wear and tear" and they wont cover the tens of thousands in mortgage payments lost over all these months.
And this isn't even the first time this has happened, they had another rental property that was also destroyed by assholes. That property had also just gone through a $50k renovation and the first renters after got away with no payments for almost a year and then took a sledgehammer to all the walls, doors, cabinets etc and tried to burn the place by lighting the carpets on fire.
Insurance covered nothing. They required criminal prosecution to prove wrong doing before they would consider covering any damages. Of course those people disappeared so we never got a dime for it.
That's why they are trying to sell everything and plan to move out of country. Over the last few years they have only ever had a single renter that actually always paid and on time. The US has pretty much gone to crap. It's almost impossible for good honest people to make a decent living here. You either have to be a criminal or live in poverty.