If anything I lean towards R2R's model in preference, because one doing things "in-house, is still generally just contracting things, which is doing similar isn't it, relying on vendors for the various aspect's, and only as good as those vendors.

We operate primarily as an MTR but will use the STR model to fill awkward gaps. 

Hi @Kevin Si      I'm in Orlando and I can refer you to someone that knows PadSplit and that business model if needed.

And even if there were midterm rental management companies, I wonder if the increased commission they'd take for higher turnover would eat into any gains you get from the medium-term model. 

We just turn on AirBNB and switch to an STR model during awkward gaps. 

For anyone familiar with the area, what would be a reasonable amount for annual repairs to build into a model?

Additionally you want to model out a vacancy period at the end of each lease term, to be conservative. 6-12 month vacancy factor is common.

For larger projects, i.e. a few dozen units or higher, developers usually are running a financial model in excel, like a proforma to solve to Return On Cost, i.e. 6%, etc. 

I know a company in the US already did one in Austin, TX:3D-printed Austin house becomes international model"According to Icon, the printer can cut the cost of building a home by 30 to 50 percent compared to the cost of traditional construction."

Our model is to buy distressed properties("grandpa's old home"), forced equity by rehabbing them.