But it got me curious, so I asked them what make/model they were going to install, and how many man-hours it would take?

If the tiles grouped together have a continuous hairline type crack in it there could be a problem with the installation of the substrate underneath the tiles, simply replacing the tiles isn't going to fix this.What made you decide to inspect a 3.5 year old roof?

Framing, drywall, tile, installation of cabinets, etc. 

As an owner is it better to a) install mini splits or  b) make renter supply their own air conditioner.

you would do the public good to file a complaint with the DRE in your state and send the fact pattern to Insurance commissioner filing a complaint against the tile company .. and send to the local DA and AG.. 

Lets say if I have 15 years of depreciation in a home left and I installed a new HVAC, can i depreciate the new HVAC system over 15 years or does it have to be 27.5 (a lifetime that exceeds the rental property)? 

There is room to move the stairs to a different location but without having done one of these before, had a few questions I was hoping you all could chime in on.1) What amount should we budget to install a new set of stairs with the correct run and rise for each step? 

After reading the nightmare stories some of you shared, I’ll not use Lowe’s or HD installation.

That being said I would look for properties that already have pools and would not advise to install one given the cost and most importantly the time it will take your property out of service. 

Partner Driven installed a new HVAC system, applied fresh paint, updated fixtures, and added new appliances.