A great place to start is by defining your investment goals—are you looking for cash flow, long-term appreciation, or a mix of both?

Placed another 8 unit portfolio under contract in early March, unfortunately contract expired on April 23rd, couldn't secure favorable loan terms that wouldn't allow portfolio to meet cash flow numbers because banks changed lending practices due to Coronavirus pandemic.

That term is generally used when zoning has change, such that it if the structure were destroyed, it could not be built back. 

Give your state's 'cure' term ("In New Jersey, a tenant has three business days to pay rent and court costs after a judgment of possession is issued to avoid eviction.

Keep it simple, transparent, and aligned with your long-term goals.

In simple terms: if you invest 200k into an ADU it won't increase your property value by 200k.

Set clear terms in writing so that it’s “official,” which can protect everyone involved.Renovation Phasing: If the reno is intensive, consider breaking it into phases.

TECHNICALLY, this falls within the long-term laws because there are only 2 categories - long-term or short-term.

And I also see many questions popping up about running a short term rental business, which to me is more of a business than an investment although it does involve an investment in real estate. 

Signing the lease demonstrates they agree to the terms and then you can hold them accountable.If you don't do this, then the person named on the lease and paying the rent could disappear and you would have no legal authority to charge the remaining three for unpaid rent.