https://therentalgirl.com/tic While these are primarily Ownership oriented, I hope you will find it helpful in managing the "shared" aspect of your rentals...

New drywall, mechanicals, windows, electrical, roof, siding- essentially new from foundation up. 

And take the roof off and build up.

Details on the duplex:Price: $385kBuilt: 2012Size: 2674 sq ft (1333 each side). 2 story, 3B/2.5B each side w/ 1 car garage & driveway for both, fenced backyard both sides.Interest: 5.49%PITI: $2,698Current Rent: $1,350 but could be brought up to ~$1,600, maybe $1,700Yearly Property Tax: $8,340 (I don't pay any on my side while I live there so $4,170)Upgrades: Vinyl floor in kitchen of both units, new AC (central HVAC) on vacant unit, roof done 2016. 

The need for a home and an office under one roof.

Seems like the few people I talked to that are selling land in Florida are trying to sell it above retail without understanding that most of their potential buyers are going to be builders. do Not buy land in FLA without doing full due diligence  on all aspects . there are environmental gotchas that you need to fully suss out prior to waiving due diligence

Check your roof.  

., Honesty is the most important aspect in mortgage lending. 

What i did not have to do while owning them though was roof plumbing elec appliances stuff like that.. those lasted a good long while..

I agree with what @Jaycee Greene said, having local connections accelerates all aspects of out of state investing.