They are using rules to add multiple ADUs.Here is a list of why adding a single ADU in dingle family  zoned areas in my CA market is typically a poor RE investment:1) The value added by the ADU addition is often significantly less than the cost of adding the ADU.

These structures are significantly more complicated than a typical 1031 Exchange structure and there are inherent risks involved in the transaction, some of which are discussed below.

House hacking seems like the best strategy for me.My goal is to purchase a single-family home in Maryland, D.C, (from lurking I've heard D.C was terrible for investing) or Virginia with multiple rooms where I'm making monthly payments similar to what I pay in rent and other charges ($2000-$2500).

I involved insurance, remediation, restoration and they all did their part and finished in 2 weeks.

I really like having multiple opportunities to make income from 1 property, including a worst scenario of converting all the units to LTR. 

I never was able to coordinate a consistent quarterly meeting for planning, I never knew who to contact because they have multiple levels of their workers and people were constantly moving in and out of the organization.  

For example, if you're planning a kitchen remodel, get multiple quotes to ensure you have a solid grasp of what it will actually cost.3.

I have successfully defended multiple clients in this situation.Once again: Don is claiming his deduction correctly, and I am breaking the rules.

Given the latter costs, a corporation can be the best solution only if you buy multiple properties.

Take the effort to solicit contractor recommendations from multiple people.