@Daniel Windingstad,I believe @Taz Zettergren mentioned Alabama, and I wanted to chime in since I’m active in multiple markets across the state.I’ll talk specifically about (property) taxes since this data can be easily compared.

Worth area, a fellow investor, active on bigger pockets, Marine, and all around good guy and smart lender. 

Landlords can also evict tenants for illegal activity with a seven-day notice.

I base these classifications on the economic makeup & activity of each area along with the school districts and migration trends.

They are an engaged couple, the guy’s mother, and the woman’s brother.

I'd probably get multiple feasibility studies before engaging a bank and/or spending any money on the actual project.

However, if this is a true "joint venture", all members must be actively involved in generating their own profits so the credit partner would also need to participate in decisions regarding the property such as which contractors to hire; handling issues that arise, etc. 

I'm active all over GA and Columbus is one of my favorite markets here.

Our BR house is way more luxurious and has more activities, but our Morganton house has an amazing view and it books more.  

Yes most definitely, however each person are able to acheive 10 maximum conventional loans, so if each properties are applied jointly, then you both would only have 10 active loans/properties instead of 20 loans (10 from each person) So you would want to strategize accordingly and see how you can acheive your maximum potentials and have multiple properties with your partner.