This situation also affects two of our neighbors who purchased their homes around the same time.

Being a former California GC, I think the problem could be one of two things. 1) Texas does not have as strict of licensing requirements as Cali does.

So, I intentionally paired those two systems together.

Go straight to the owner's house and knock on the door.

I was in Two 3 Family homes yesterday which converted 2 BR units into 3 BR units. 

I have a vacant house a couple doors down from my personal home, in Texas.

Purchase price: $19,000 Sale price: $20,000 This is one of two lots I got under contract in Port Charlotte, FL from the same seller.Sold it to a builder for $20k.

From CSLB:This section defines what an owner-builder is and the laws surrounding the practice.An owner-builder is what the term indicates: a person owns the property and acts as their own general contractor on the job, and either does the work themselves or has employees (or subcontractors) working on the project.The work site must be their principal place of residence that they have occupied for 12 months prior to completion of the work.The homeowner cannot construct and then sell more than two structures during any three-year period.Getting a GC license and going Legit is pretty difficult.

Quote from @Renaldo Zora: Quote from @Travis Biziorek: Detroit has to be at the top of this list.I have 14-doors there (from California) and we're doing lots of deals, all-in, for $75k-$90k.12-months ago that range was $60k-$80k so I'm not sure how much longer we're going to be under the $100k mark but there's still a lot of opportunity.I just finished up a duplex in Detroit.

Will the IRS believe that she can be busy with 3,5,7,10 doors?