Sorry, I should have added that flooring for the most part is going to the store or looking online and ordering the supplies and buying the install from the store and setting a time to let the worker in. 

There is a corner of my house that is leaking in some water (see picture)I had a company come take a look and they want to charge ~$2,700 to install a sump pump and about 15 feet of french drain. 

The price includes 3 furnaces installed in each unit and 3 condensers installed on the roof.

Installing tile is easy, but takes time to do a good job.

A curved shower rod is $30 and a crappy on is $10.These are the type of things that can matter to a tenant,  but round off to $0 when I do my math.Permanently installed shower rods (screws rather than spring tension) last longer and don't scuff up the wall as much.  

I am about to install flooring in my own home.Choosing underlayment seems similar to what I read this morning about the market for cybersecurity software.

Sometimes things can overlap, i.e. maybe you can have the back yard landscaped while counters are being installed. 

The central air unit/coil was newly installed a few months before I bought the place so I'm not expecting/planning any capital expenditures on the unit. 

@Monica Chan if the 2 unit is in a nicer area you might just install laundry machines, not coin operated ones.

I watch the drywall installers just whip through the drywall to make outlet holes, light holes, switch holes, etc.