I feel like those kind of fixes can be estimated when getting a house inspected and appraised. knowing when a new water heater was put in or when a roof was replaced, these all have life expectancies and yes accidents happen but if this is happening on a regular basis for you, like I said, I have concerns.

But when one of the parties is licensed by a governmental board of some sort, the board can subject the licensed individual to higher standards behavior, and they can do this largely at will and without the higher thresholds of most criminal laws.

Yes and all the lawyers will collect their standard fees. 

Properties, for novices, which look good on paper and have good cash flow usually come with C to D+ areas, risky tenants, and a lot of cap ex that you can't see on the internet (basements, roofs, water issues, outdated mechanicals).You are turning a terrible loss into a springboard which is great, but you are trying to move too quickly it sounds like.

Works with most standard dead bolts.$5.49 KitchenAid Classic Pizza Wheel Cutter - https://www.amazon.com/KitchenAid-KE113OHOBA-Classic-Pizza-W...Every kitchen needs one.

Quote from @Daniel Mendez: My policy is to set standards and apply them equally to everyone.

the more hands-on you personally are, and the more niche / creative / difficult the strategy is, the more the potential to cash flow (but also higher risk.)standard, professionally managed, vanilla LTRs in good neighborhoods basically don't cash flow right now with interest rates where they are.

In the event that you do have a true squatter its a fairly standard eviction process which is unfortunate but does happen in this business.On a preventative note if you have a vacant unit you can put in a security system that uses cellular and you will get notification if anyone comes in. 

Is it possible to find a single-family house for around 100k that is compatible with Section 8 standards? 

While commissions are negotiable, industry standard today is 6% of the gross base rents for the first 5 years of a lease term and 3% for any years after that split 50/50 between the landlord's broker and the tenant's broker.