For example, during move out, if you were to have to clean/do yard maintenance yourself, would you charge an hourly rate for your time, or only charge for materials/parts?

It does Not cover a roof simply wearing out from age, felt/materials coming apart, etc. 

@Clarence JohnsonBuild dot comWayfairAmazon We have a commercial account with HD and buy some selections through them, but theiroptions are usually blahBasic building materials we get through HD and BMC

Is this a type of fix I can do myself with basic Home Depot materials or should I bring in a handyman?

You used to be able to lay additional layers of materials on top of the membrane, but Denver code now prevents that. 

Repairs made on existing assets that materially extend the life of the asset.

Ideally, if you could at least get their email address in the call you could then send them marketing material, etc. 

I have a specific estimate of how much materials and labor would be to complete the home AND OF COURSE, the market value. 

As someone who is certified in mold remediation and used to be in the business, there is a lot of misinformation here.Stop the source of water and remove and replace porous materials safely.

@Aaron MoayedI think the problem here is that you're using materials from a real estate investment university class and trying to use them to interpret tax law...No wonder you're confused.We don't start with cash flow or NOI in the tax world, although that's fine to do it that way if you have the basic concepts down and prefer to do it that way.