This is a different breed of investor.

Curious whether you have solved this yet?

You posted this in the wholesaling forum also.

Cost will depend on how easy this is.  

I have purchased a lot once before, but this was under the expert tutelage of a builder friend of mine in a different market (Colorado).

Any advice on how feasible this is?

I'm looking for an answer on this as well. 

This is all I do, and essentially most of what I talk about across the 550 episodes of BiggerPockets Money with @Mindy Jensen.

This will help you build relationships and learn from others in the field.

Hello Matt, are you only doing prefab wall panels, where they are assembled before delivery, or are you going to the next level with a full Prefab modular construction, where the units are completed at a factory and relatively minimal work is completed on site.One issue I have heard on the modular construction is the manufactures are sold out for this year.You might want to check out www.VuhausLLC.com/models they are doing high end modular construction.