Not only does this free up capital for investment, but it keeps me lean and beholden to no part of lifestyle inflation.I have colleagues who are unwilling to quit their jobs or take measured investment risk because of the threat it poses to their lifestyle costs: homes, cars, vacations. 

Examples could be pre-foreclosure, tax lien, loss of job, death in the house/family, divorce, high medical bills, drugs, rental property gone bad, or anyone that was diagnosed with a severe medical condition.

For pretty houses a 3-10% option fee is reasonable with 3-5% being most common.

Since I don't have a real home (I move every 4 months for my job), I've been keeping my stuff at my parents house in NC.

Once I quit my full time job, I plan on doing this nearly full time.  

I have the opportunity to take a different job that pays less but leaves 3 weekdays free to do marketing and networking but I won't have much money to invest in marketing.

Unfortunately this kind of stuff is fairly common.

I currently have a full time W2 job as a civil/structural engineer doing work that I actually really enjoy.

They would rather be working on a job that is paying them than to spend 20 hours doing your 4 line itemized rehab budgets on potential homes.

I live with my wife in our own home and we both have full time jobs that take up a 12 hours of our day.