Many times, permits, utilities delays and material issues are but a few.

Forums like these tend to open the flood gates for real estate agents to promote the cities where they sell.

The property needs to be titled, the home made of non flammable materials.

Checkout section 469 of the tax code for material participation tests and what it all means.

After industrial hemp was legalized in the 2018 US Farm Bill, hemp building has started to explode in the United States.Hemp is a long-lasting sustainable building material that sequesters 5 tons of CO2 per acre while growing and eliminates toxic landfill-packing petroleum-based waste on the building site. 

I buy most of my materials from Home Depot- because they are everywhere and the prices aren't bad.

If you get the REPS and meet 500 hours managing your own materially participating LTRs, your LP interest can benefit you.

The sponsor's largest source of revenue is in the promote, which in most cases isn't realized until the sale. 

However this forum is not for self promotion. 

Search 'pm horror stories' with one hand while your other pumps up and promotes getting one.