However, when taking the prefab lead times into consideration, capital, and shipping costs the overall timing is the same or longer soup to nuts for prefab.

Things tend to fit together in life - which means you rarely find someone who is a model employee, full of vigor and initiative, who helps little old ladies across the street and volunteers at the soup kitchen on weekends, and then tells their creditors to screw off.

Personally, I use Buildium.It's a soup to nuts solution, from application, to tenant screening, to rent collection, and maintenance requests.

I have to go out and buy beaucoup expensive ones, because they will keep my food colder, and make my grilled cheeses and Campbell soup taste better.Put them all on credit, and if I'm late on a payment--20% interest goes to 30% interest.You know what we need around here is Rent Control, because people like me can not save up enough for house.It's all those Landlords fault"

So up-keep and maintenance can be simple and cost efficient by hiring the right person/team.

Entitlements and sell to a regional developer to complete the conditions and permits, complete the final permit and mapping for sale to a builder, buy an entitled project to build out for sale, soup to nuts the entire process?

You can definitely find someone to manage PPC for $300 - $500/mo but in our experience it's not *usually* the soup to nuts (Google, Bing, FB retargeting ads, daily management by a human being, etc.). 

Imagine being the server of a table who is counting on tips to make a living, and you see several folks at your table brought in their own food and the other guys order soup and a water. 

@Stephen GloverI believe "Making Appraisals Work for You with @RyanLundquist | BP Podcast 07" also talks about this.That said, for newbie investors this is a great example of why it's important to understand the BRRRR strategy from soup to nuts.

Also personally I'm not a fan of deals that have too many "chefs in the kitchen" (who can potentially argue and "spoil the soup").