Best way to tenant proof a house. (fixtures, appliances, surfaces etc.)

[Bryan H.]

I was wondering what everyone's thoughts were on different ways to tenant-proof a house and the best materials to do so. When I renovate a property I try my best to tenant-proof the property as best as possible without sacrificing cash flow. I wanted to know what you do to get the most cash flow but reduce your maintenance bills as much as possible for B-D class rentals. Let me know what you do religiously that is worth the extra cost and what to avoid. 

I always replace toilets, shut off valves, water fixtures, add frostproof water spigots with additional isolation valves for winterizing, switches, light fixtures, Add ceiling fans to every bedroom, GFCI outlets, regular outlets, smoke detectors with 10-year or hard-wired-in, use a quality one coat semi-gloss paint, basic white washer/dryer and Exterior door locks with touchpads (key free). 

I need to find a better solution for both concrete paint/coating for high-traffic areas and flooring (I have had tons of issues with LVP with water from entrances and separation and unlocking), and I want to know if it is worth spending the extra money on metal roofing due to its durability.

I look forward to hearing about your experiences!