I will be writing a new lease since current lease terminates and does not automatically renew.

I wouldn't automatically assume this.

The tax value does not automatically change at sale, it is re-evaluated every 3 years. 

So far so good.After I uploaded the photos of the checks from the tenants, the tenants get an email have them e-sign an application for an account, then they deposit the funds from the check into that account, once the deposit clears you get a "secure email" (actually the more frustrating part of the system) that has a PDF attached which they ask you forward to your tenant.The language is:"As required by law, the following interest bearing savings account has been opened in your name to hold the security deposit and/or last month’s rent paid under your current lease at: [redacted] You will receive an interest check at the end of each year of tenancy, which will be automatically mailed to the property address listed above. "...Some information about the tenant, myself, and the bank..."

To give you a very rough example, I automatically assume that anything older than 1980 will need all new electrical, heating, and plumbing.  

If a tenant meets your criteria, do you automatically accept them without owner approval?

I am trying to move my STR business forward and just getting to the stage that I need to buy a property management software and pricing software and even an automatic keyless entry system. 

These days most appraisals are just almost likely following automatic software valuation, automation valuation software has a range and C4 definitely is low to medium. 

No, this does not automatically trigger the due on sale clause. 2. 

- set them up on automatic payments with an online rental property software.