We’re looking for Excel models to compare these options and calculate potential net worth in both scenarios.

So many newer investors are obsessed with underwriting models as though the most intricate and complex model will deliver the holy grail. 

The biggest hurdle in the Scott's model is the Deed for Contract.

CT isn't cheap so if you plan on doing it there you are going to surprised at how poorly you do. maybe in the suburbs I'm not sure but as much as I know people call us from CT and everyone is rich and has lots of money and things are expensive out there. build to rent is a great model. we build 3 story walk up infill and keep it to the residential side. 3 units is the most units before it's commercial and you need engineering, etc. check comparable and things liek that. we came up with this design a year ago and we sold 10 if you want to talk further please DM me happy to connect. there are some great build to rent conferences. we went vertical not horizontal with it to save on build costs and design to fit on any infill lot. this fits on a 3500 square foot lot. most lots in our area are 30x120 or 30x150. in miami where I live now they are 50x100 or so. but any infill lot we can pretty much get this one on. there are some great build to rent conferences coming up too that if you like this topic I'd recommend attending I'm sure you'd learn a lot.  

You can read about the differences here: Cost Segregation Study Approaches ExplainedLet’s first start with what the approaches:Detailed Engineering Approach from Actual Cost RecordsDetailed Engineering Cost Estimate ApproachSurvey or Letter ApproachResidual Estimation ApproachSampling or Modeling Approach"Rule of Thumb" ApproachSo which of these approaches is required by the IRS?

This model (Dressbarn), according to Santarelli, was so successful that they duplicated it over and over again (37:44).

  :)   There's so many Gurus pitching this and that without mentioning the risks to them and to the buyers.So glad to hear re your business model being fair to the buyer.   

Unsure about STR regulations in Charleston but I would advise you to search "arbitrage" on this forum and read up on the hundreds of pros and cons responses here before diving in to any market using the arbitrage model.

I know that RTR positions themselves as “turnkey” but the reality is that they are more of a hybrid model - they set you up with everything you need and facilitate relationships with lenders, insurance, property managers, and so forth - but they are not the actual service providers.

If there is someone's busines model you aspire to, see what they are doing.