(optional) Writ of Execution {After Judge gives possession of property have them sign, it will save you time}Leave copies of 1 and 2 with Sherriff or give to the process server of your choice.

This is in addition to the closing price (all the monies needed to prevent foreclosure and take possession of the property).  

Now, the restoration co is working to remediate but they say that there are more areas in the house that have mold and likely ALL her possessions will have to get wiped and cleaned.

Thanks in advance for your advice from any experienced landlord.DanielBefore I go give any advice First question How many calendar days after her last day of possession/move out did you send the letter of itemized deductions ? 

Make sure you have possession of the property before doing this. 

Aloha,What evidence do you have that they actually returned possession to you?

Additionally, my tenants have provided evidence that the appliances are indeed their possessions.

Cash out refinance at the earliest opportunity if you're actively planning on expansion so that you ACTUALLY possess that dry powder to take down the next deal and have eligibility for a pre approval on the purchase loan. 

Be prepared to do the work and partner with folks to help you in the process if you don't possess these skills.  

As for the 421A, I don't know for certain the answer to your question (most buildings have received their 421A before closings start but if you plan to close immediately upon receipt of TCO and don't need a mortgage then it's possible you could actually take possession before the 421A paperwork is finalized) but your attorney or the sponsor's reps should be able to give you an answer as to who pays and how much.