It can be scalable as equity is built in your houses, and essentially allows you to recycle your downpayments.

Low end area should have very high margin and high end should have low margin etcSize matters for maintenance: Scalability of the portfolio matters.

I like this method, however I have some concerns about the scalability.

Then you can do direct mail (scalable), door knock (if you have lots of time and are personable), or cold call.

In additional to helping my dad (who would work himself to death before accepting financial support), I'm attracted to the tax and diversification benefits of RE investing, but a financial return is a secondary priority (because I think I can more scalably generate a higher IRR elsewhere).Responsibility breakdown: Given my skill-set, I'd run the investment models and likely oversee most of the tax/legal stuff but ideally gradually ceed control over time. 

I want to build something that is scalable and efficient.

In addition, the biggest piece of advice I could provide is to ensure your wholesaling activities are highly scalable so you can produce the volume required to get consistent deals.

There were a lot of items that had similar cost that are not directly scalable with total sq ft, like HVAC costs (units are small, so there is minimum equipment sizes), plumbing costs, foundation cost, permitting costs, to name a few.The $90/ft2 had nicer exterior finishes (hardiplank vs vinyl, nicer windows, nicer doors, etc) due to historical area building restrictions.  

And it's much more scalable.

I know that I want to move into more scalable property types such as MF, Office, and SS, and am actively educating myself in every way possible from books and podcasts to a mentor relationship and the BP forums.