Property Maintenance: How far do you go?

[Gabriel Amedee]

So for the past two years I have been managing my family's handful of rental properties and have made the decision to open my own property management company. This is not my first company and I understand how important it is to provide value to your clients. I've researched heavily on how to maintain your property in order to avoid major repairs in the near future and came up with this long list of scheduled maintenance checklist. 

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Inspect, and possibly change out HVAC filters

Clean kitchen sink disposal

Clean range hood filters

Inspect your fire extinguisher(s)

Test smoke/carbon monoxide detectors

Test garage door auto-reverse feature

Run water and flush toilets in unused spaces

Check water softener, add salt if needed

Give your house a deep clean

Vacuum your refrigerator coils

Test your water heater’s pressure relief valve

Replace batteries in smoke/carbon monoxide detectors

Check the exterior drainage

Clean out gutters

Inspect the exterior of your home

Get your air conditioning system ready for summer; consider servicing

Repair/replace damaged window screens

Clear dead plants/shrubs from the house

Check trees for interference with electric lines

Inspect roofing for damage, leaks, etc.

Test your electricity to the extent that you can

Tighten any handles, knobs, racks, etc.

Check all locks and deadbolts on your doors and windows

Check caulking around showers and bathtubs; repair as needed

Remove shower heads and clean sediment

Deep clean and inspect the basement

Check grout in bathrooms, kitchen, etc.; repair as needed

Inspect plumbing for leaks, clean aerators on faucets

Take care of any insect problems you may have

Clean and repair deck/patio as needed

Clean out window wells of debris

Check and clean dryer vent, other exhaust vents to exterior of home

Clean garage

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Do the landlords on this forum perform any of these tasks? 

If so, do you believe it provides great benefit to the life of your property?

If not, do you feel it is unnecessary?

If a property manager were to show you all these methods of maintenance he has planned (quarterly, semiannually and annually) for your rental property, would you consider this as value or an expense?

Thank you in advance for your responses. Really appreciate what this forum provides.