He demanded of me to install central AC or he will have to take this matter to court. 

A detached garage was built off site and delivered and is the only work I didn't do, although I did wire the building and install the garage door.

I hope that most people here are aware that landlords of commercial properties make huge profits out of installing solar power to their commercial properties.  

The property also has firepit in the backyard, smart door lock, cameras, thermostat, and router installed.

@Brandon Malone I have 1 LTR in Denver NC and installed a smart lock with a physical key for when/if the batteries die while tenants aren't home.

Bought for 359k will sell for 659k in this example.Assuming 150k down payment in 2024 50k annual payments for a year for 4 years 259k ballon payment I thought 50% of each payment would be cap gains but then I read unstated interest payments and I’m lost.What portion of his annual installment payments will be interest?

Is it possible to lower the window to the floor and install a tempered window?

We added value by re-doing the whole house, installed vinyl floorings, rebuilt 2 and a half bathrooms, re-painted the whole house, replaced all the hardware in the house, installed new lighting, ceiling fans, re-painted the kitchen, and completely remodeled the upstairs.

It is easy to install.

I will need to do some minor updates to the property (painting, updating bathroom tiling, updating trims, etc) in order to get the property rent ready.