The last I saw was it had to be over $2 million because the amount of taxes on that number is low. 

To build in Norton’s Commons at this point, I would guess you’re looking at around 1.5 - 2 million.

They're multi-million dollar investors and tax professionals and they're content is spot on.  

We've already collected around 20,000 pre-reservations, equating to approximately $30 to $40 million, and have received hundreds of requests to build individual units.We’ve completed the first unit, which has passed the final county inspection under a residential permit, and are actively working on the second phase.

Homes that are "modular" are partly constructed in a factory and then assembled on the building site, otherwise they are just like any stick-built home with the same code requirements.A lot of people have made millions with manufactured homes.

We found one for the price of 1.9 million.

What I mean by that is for instance in a place like Newport Beach California where houses cost millions to buy there may be apartments available for 2000 a month, which is way less than the per square foot of a purchase.

For my project budget of 1.5 million, they charged about 10k. 

It is not true for beginning investors or even someone with experience in 20 single-family homes and I'm pretty sure he won't teach you everything you need to know in three days.I found a podcast with him last year where he explains he's been investing for ten years and has an empire worth $85 million.

I think it will answer a lot of your questions.https://store.biggerpockets.com/products/first-to-a-million