We go coast to coast with our 24000 doors. 

Hey there is someone in the house, maybe I should knock on the door and ask them a few questions...like are they planning to sell the tennis court? 

Things that you can do or have access to that not everyone does.

The walls are Home Depot subway tile .69 SF I've had the boxes in my garage for a couple of years.

We have been at this for about 4 years have 5 properties and 7 doors and are also looking to keep growing. 

For our ADU (garage conversion), I am handling the design/engineering and then selecting a final contractor once its permitted and ready to go. 

Landscaping upgrades, exterior painting, new siding, a new roof, and upgraded front doors and windows can dramatically increase ARV by improving the home's exterior appearance.5.

Adding 1-2 doors this year would be awesome. 

We are still relatively small with only 5 properties, 7 doors.

Every little thing in the project should be in writing, even down to the door stops :-) See my tile spec sheet below ...Two problems with your post though - 1) In my experience, most problems come from the customer changing their minds constantly.