When people don't pay their assessments or fines, a lien is filed on the property for the amount due plus costs - and the lien can include accruing interest and penalties.

When asking about future properties, he said that they would prefer to let our portfolio accrue some income before refinancing additional houses.

The question I have is, how do sponsors keep track of a preferred return if it is delayed/accrued vs regularly paid out?

I have a separate account for each property, but, I also understand at some point this is no longer scalable.As @Andrew Yarman alluded to, I also use high yield savings accounts to park CapEx, Vacancy and accruing Insurance Premiums. 

Then downsize, and in your situation living with parents for a bit is the ultimate savings to keep accruing your cash pile.

@Damon Gainey essentially it is the expenses accrued while waiting on the flip or rehab to be done.

Do not mention the eviction.If it's obvious that she is not living there to both you and the witness, send her a letter/email with proof of receipt to share that she has obviously moved out, that you do not want to continue to accrue unpaid rent to her if she has in fact vacated.

By adding a large amount to your other income, you put all of your income for the year into a higher bracket.An IRA is most tax-efficient when you retain value in the account as long as possible and use that principal to accrue more value through investment gains.  

My inheritance from my parents somewhere in those three decades would give a decent bump but not too much.I could take most of that 1K and make a good dent in my loans, especially with no interest being accrued in response to COVID.

Then interest starts accruing on the balance in the HELOC.I used a first-position HELOC on my rental property (the terms are slightly more conservative for investment properties, but they still lend at 75% appraised value).You only want a first-position HELOC if you live below your means.