For larger properties, some of our clients run another cost segregation study at the time of sale.2) Partial Dispositions - Taxpayers can carve out and dispose of components removed or demolished from a building.

Although then you are looking at demolition and disposal fees and permits probably, in addition to the new permit(s) for the new ADU.  

I hate stinky butts.DonProbably, but if the price for having a tenant who pays $50/month more than the last tenant on time, every month, is disposing a coffee can full of butts at the end of a year, then I'm all for it.

This means that you may have to recapture or add back into your taxable income the amount of depreciation taken on your investment property when you dispose of (sell) your investment property. 

I just had one bolt mid lease leaving huge amounts of garbage I have no way to dispose of.

That’s a solid plan you’ve laid out, and you’re in a strong position with $80k saved, solid income, and the VA loan at your disposal.

They also need to be flexible in where they live, if they want to own-eg if you insist on living in NY city vs being flexible and moving to a less expensive city, you're going to have a higher chance of owning a home.People also need to look at their finances and where the money is going-new cars, eating out frequently, expensive vacations, disposable life style, etc. 

When you sell your investment property and execute a 1031 exchange, your suspended passive activity losses (deferred under the $150,000 AGI limitation) generally remain suspended because the activity is not considered fully disposed of in a taxable transaction, the losses continue to carry forward into the replacement property.

My questions are: Am I legally allowed to remove and dispose of the tenants’ abandoned belongings with a junk removal company?

I am not quite in that boat of disposable income that I could stomach losing, but I have determined a reasonable strategy of maybe going in 1k at a time on a 3-6 month journey to 10x 5 to 10 transactions.