(Like RC Wiley) The money losing warranties offered by utility companies.

I've worked on a couple warehouse deals, not sure if you have a single or multi tenant and what the lease terms or time left on the lease is, but to @Henry Clark s point, that kind of cashflow return for that type of initial investment is awesome. 

To minimize capital gains tax on the sale of their primary residence, your in-laws can utilize the $500,000 capital gains exclusion, potentially explore an installment sale to spread tax liability over several years, or consider converting the property into a rental to use a 1031 exchange for tax deferral eventually.

I own a large portfolio of single family properties and all of my info I give out comes from my personal investing expierence. 

Over 4k in damages, utilities, past due rent, court fees, tons of trash, holes in walls, pee everywhere, etc. 

The devastated community might take years to recover (or never recover), but your costs will continue (debt service, taxes, insurance, utilities, etc.).Meeting the above financial independence requirements depends on the city where you invest.

The Birmingham market has been showing steady growth, with increasing demand for both single-family homes and multi-family properties.

I have a single family house (primary residence) and am wondering the pros and cons of selling to a builder?

Also, why not utilize section 8 on this one?

Salaries, compensation, rent, taxes, utilities, fees, MLS, etc."