Zoned SFH and very common setup I am seeing these days.

The market you are looking for should be one with strong population and job growth. 

Also, focus on 2 years of job/income stability.Class D Properties:Cashflow vs Appreciation: Typically, all cashflow with little, maybe even negative, relative rent & value appreciationVacancy Est: 20%+ should be used to cover nonpayment, evictions & damages.Tenant Pool: majority will have FICO scores under 560 (almost 30% probability of default), little to no good tradelines, lots of collections & chargeoffs, recent evictions.

If you have an awesome job and love living where you are, there is no shame in staying put! 

But since I am in the fire area of Altadena I will be very busy rebuilding houses for the next decade for me "day job".

Common fees will include a set-up fee, a leasing fee for each turnover or a lease renewal fee, marking up maintenance, retaining late fees, and more.

Certainly, this is a common strategy.B.

When something goes wrong, you can find the best contractor for the job, who can make the repairs right away, and now your tenants are happy, and you have minimized the time you would have spent speaking to your tenants about the delay or fighting a warranty company.

Throughout the year I come across situations where people need to sell there home due to a variety or reasons, job loss, income loss, health, divorce, etc.

I've seen plumbers and builders stop hiring because all the "young" people start the job and then don't put in any effort or stop showing up.Figure out what you want to make hourly, then start telling everyone and their brother that you need work, how many hours you are available, etc.