I've seen individual municipalities offer those same protections despite the state not offering them. 

INNAGO is a free tool that enables you to market your property, receive monthly payments, handle maintenance work orders, and offers additional features.

Are there any additional methods I may have overlooked?

Dependence on Third-Party Banks: Fintech apps that rely on a back-end bank for processing transactions introduce an additional layer of risk.

You'll typically see them partnered with traditional Self Storage - meaning those Facilities offering Storage Units for folks to store their household treasures AND on-site parking spaces for Boats, RV's, company trucks, etc. 

Whenever you miss something you can always add it to the sheet to make sure that never happens again, but there will always be things like that.

I keep an eye on the forecast and warn guests about inbound weather, even offering that they can come a day early if the house is available. 

Additionally, the tenants have been around since 2020, 2021 and 2023.

Should I hire a contractor to add an additional meter that separates the ADU from the main house or charged another fixed amount for the main house as well.

Additionally, if you are looking to build any type of portfolio yourself, you will need capital, and often times your W2 is what will let you get loans that you would not get without a W2.