This status is achieved by materially participating in your real estate activities.

There is also coverage for materials In-Transit & at temporary locationss as well. 

I have already read Rental Property Investing by Brandon Turner and I'm looking for new material to read.

No commercial business owner wants to own the building when they can triple net lease and instead just pay for furnishings, taxes , insurance and maintenance.The ConC return on a triple net leased property is far higher than on a property owned by the management company.Passive investors can still take advantage of accelerated depreciation and cost segregation thru material participation of new construction of a STVR home. 

.- Did you materially participate?

There is a lot of material on the topic. 

Alternatively, you could consider marketing directly to sellers as another option.

Alternatively, consider furnished rentals, particularly for students in medical programs or those undergoing residencies.

For materials and/or services for any of my investment properties where the contractor/person does not give me a receipt, I do one of two things:1).

It seemed reasonable to me  However, it was after I expressed frustration that I had sent all the info they asked for and had yet a to have anyone reach out to me regarding the company’s investment opportunities, I was told I did not fit their customer profile and that they would not be able to work with me.Anyway, they continue to contact me with marketing material from time to time.