Move out walkthroughs; "additional insured" on renter's insurance

[Ken P.]

Hi friends,

Small landlord here. Three questions for the community:

(1) Do you charge a fee for lapses in renter's insurance coverage that  may occur during your tenant's tenancy? Is it lawful to do so in DC? And what do you think is a fair penalty/fee to charge in that situation?

(2) Do you require that tenants add you as an "additional insured" on their renter's insurance?  I understand it is common practice but have you heard of any downsides in terms of risk/liability mitigation?  Somehow I imagine having my name on the renter's insurance policy may make tenants think that I'm liable for any of the stuff that is covered by renter's insurance.

(3) Does DC law require that move out walkthroughs be conducted at a particular time?  I've seen something about a three-day rule but can't find the relevant municipal regulations.   Are there any requirements with respect to walkthroughs? Does the tenant need to be there?