On the flip side, if you've got a bunch of Section 8 tenants living in a building that's in a neighborhood where a lot of the tenant base has good jobs, high credit scores, and are generally reliable people, you've got the most risky tenants in that tenant base and that ain't what ya want.

Quote from @Paul Gupta: Hi, in California, For jobs requiring a license, there was CSLB (contractor state licensing board) which would give either a General Contractor license, or specialty licenses by trade (~60 specialties such as concrete, welding tile, ) https://www.cslb.ca.gov/about_us/library/licensing_classific...My Q: does Maryland and DC area have similar requirements? 

Im not an owner, I don't profit from their jobs or projects.

Each property comes with its own set of risks and every investor must understand those risks and do the minimum - get 3rd party inspections, 3rd party appraisals, verify rents, jobs  and crime rates at city-data.com - before buying.

And I occasionally get one tenant complaining about their neighbor.

A client of mine recently invested there and raves aboutt the ease of finding solid contractors who stick to the budget.One piece of advice: before jumping into any market, spend time understanding the local economy, demand drivers (like job growth and population trends), and the landloard laws.

In many ways those who want this probably would do better in a job than in an entrepreneurial role.And that's with regards to good coaching programs.

For example they only buy land and build in land lord friendly states.Before they buy land to build on, they thoroughly analyze key market indicators such as population growth, occupancy rates, job growth, and even prioritize top school districts.

Eventually, I’d like to start using the cash flow to pay myself and work toward replacing my day job income.

They will do a slap dash job on a house that still has a bad roof and foundation in a neighborhood that will see zero appreciation.