Tenant shall provide a certificate of insurance to Landlord demonstrating that Tenant has procured the required insurance coverage, within ten (10) days after the commencement of the Term of this Lease and within ten (10) days after any renewal or change in such insurance coverage.

But there could always be specific circumstances where a shorter (or longer) holding period would be justified.Some things that demonstrate intent are - actual holding period, past history, present business practice, unsolicited offer, extenuating circumstances, correspondence with your professionals.

I would readily agree to rent to prospective tenants with pets, as pet owners overall often demonstrate a level of responsibility and commitment to caring for their animals that indicates strong character. 

Is there a standard amount that we need to demonstrate is held in reserve for the duplex?

More than likely, if it goes to court, the report can be demonstrated that it is insignificant and not present long enough to cause health problems.If the tenants asked for a report, and they know that you did it, then they will ask for it.

To establish negligence on the part of an owner, the plaintiff in a civil suit shall demonstrate actual injury caused by the lead base substance.

We also aren't sticklers for 3X income, but you have to be close to that and demonstrably able to cover rent + expenses.  

I think during the pandemic, we demonstrated both ends of this spectrum as some folks proved to be pretty idiotic, lazy and selfish......but at the same time we demonstrated and reinforced America's clear place as the world's leader in many ways including technology and innovation.Unfortunately, the "bad luck" culture makes it really difficult and complicated and practically impossible for America to implement any kind of effective safety safety net for the rest of the country that genuinely needs it and will use it properly (i.e., not making it permanent, etc.)https://www.youtube.com/watch?

I think the Attorneys General of several states will take interest.I've watched a few of the videos, it's demonstrably Bad Training, False Hopes, Overleveraging, unsophisticated lenders ("gator lenders" formerally known as "gap" lenders and "bridge loans" who get burned) and that will lead to disasters and more legislation.

In my state the contractor's license comes down to them passing and exam which demonstrates some degree of competence, registering with the state, and maintaining insurance.