@RichardAH 

Tap on the Home tab on your KASA app.

Near the top left of the app should be the "My Home" drop down list.  Tap it and your homes should be listed, including an option for "Home Settings"

Under the "Home Settings" menu, locate the property that you wish to remove and Tap on the chevron to the right of its name to select and open the menu for that property.

At the very bottom of the next menu should be a large button labeled "DELETE THIS HOME".  You might have to remove all the devices assigned to this property first before the button will appear so you can delete it. 

  @J_Shaw 

Thanks for suggestion but unfortunately that's not working. I've deleted all rooms and devices from the home in question but am still not getting the "Delete this Home" button. See attached screenshot. 
 

  @RichardAH 

That's unfortunate. 

You may need more direct support from TP-Link to correct this issue.   You can contact TP Link directly through the app. 

Tap the "Me" tab and then "Help".  A button to "contact us" should be at the bottom of the menu.  

  @RichardAH had you ever resolved this issue? I have 4 homes in my Kasa. I was able to delete a couple of the older ones. However, there is one that I cannot delete no matter what I try. I am unsure why that one would not delete. Perhaps a sub on it or something. No rooms, groups, or devices in that specific home which no matter what I try; I cannot delete. 

  @Timor Thanks for reaching out. I never did manage to delete that second home in my Kasa app. However, in the process of purchasing another home at present, so hopefully I'll be able to repurpose the phantom one!

I could not delete my 2nd home, there is no delete option in the Home Settings.

The workaround (slow as it is) is to move all the devices to the old primary home, and then I was able to delete the 2nd home. I then had to manually one at a time delete all the switches in my old home, but at the end of the day, I was able to get rid of the 2nd home.

  @KLH123 thanks very much for that! If I understand you correctly, you ended up deleting the "new" home, rather than the "old" home. Certainly a little counter-intuitive and not something I would have thought of. I will certainly give it a try, once we move into our new place.

  @RichardAH 

correct. I moved to a new house and started adding devices there. I had to move all those devices to my original/first house then delete the new house once all the devices were gone. 

If you hold a device with your finger, you will get some options that can help speed up moving the newly added devices, and deleting all the old legacy devices.