@Jeffrey Zhou What you are describing is that DBI receives an anonymous complaint and sends an inspector who subsequently issues you a Notice of Violation (NOV) requiring you to abate work done without the benefit of permits.So in that situation, if the work to legalize your unit is significant enough to create a habitability issue you may need to perform a just cause eviction (temporary only) that allows you to displace the renter in order to perform the capital improvement work. 

Yes, you can terminate a lease based on their violations. 

Some things I do to avoid bad situations: screen well, only have properties in good locations where people actually want to live (I find tenants behave better when they know they have a good thing going for them and that they are easily replaceable), set proper expectations, have a rock solid lease, go over it with new tenants to make sure everything is clear and agreed upon, and enforce the lease by issuing a formal notice to pay or quit every single time rent is late by even one day (and charge the late fee), or a formal notice to cure or quit every time there is a lease violation.

You will want someone who is on top of these changes and is not committing any fair housing violations. 

Here's some food for thought:- Many of my first time investors know from the jump that they aren't going to be driving 5 hours round trip for every little item, and also know that they arent prepared to handle things like disputes, evictions, lease violations, etc.

You've probably heard of big Landlords losing property, but only because they were flagrantly violating Fair Housing, running a slum, or otherwise violating the law in an egregious manner.

Whom am I to believe, you, a professional in the business for 10+ years with a verifiable track record of success and a willingness to provide information based on your experience and education at no charge, or my guru who has never run a note business and has been banned from the securities industry for life for violations related to stock dumping 6 years ago?  

Make sure it explicitly explains the process for termination if you are unhappy with their services, especially if they violate the terms of your agreement.3.

Also, they state that if I'm found to have violated these peoples Human Rights, that I can lose my other Low Income Housing Tax Credits (aka Section 8 at my other property).The complaints also state that these individuals suffered "anguish" forEven if we decided to fight this, which we probably would have a decent chance at winning, it will cost me thousands in lawyer hourly billings vs. just paying out a settlement to these people.At this point, my lawyer has filed an extension with NY Division of Human Rights and should be reaching out to the non-profit behind all of this mess some point soon.It sucks because it will be more expensive to fight it and win, than to just take the L and pay them out a settlement.

The various "what-if" on neglect, just like with a tenant it's violation of contract terms and you take the applicable legal actions.