So, clearly something that a tokenized security is great for and a custom block chain that never lets papers get lost, changes made without approval, etc.They gave me this to read and I found a lot more too. https://www.realestateskills.com/blog/private-money-lenders It is an extremely common strategy, but they want to take it to the digital world.

You also need an above ground room dedicated to your mechanical like furnace, water heater, main water, filter system, ect, so you lose usable sqft in the main house.I did a flip that was on a slab, and it's the last one I'll ever do unless the deal is a home run. 

If you go the window unit route, make sure they are 120V units, as 240V unit needs a special receptacle and dedicated higher voltage circuit from the breaker box.

They wouldn't need this agreement if they had customers best interest which is required by MO law.  

If you just need screens you can get those custom fairly easily at a hardware store.

IF they are not box cabinets but custom built in place, better pass,they hardly ever come out right. 

I could see 50 % for a trade where material costs comprise more than half - like solar or where special order or custom such as kitchens.

The customer doesn't know this until they have owned for a few years.

Now as a business owner that takes staff tIme, as Yiur compny grows you have to be able to scale and eventually have dedicated person or people doing this task.

Amazon’s made a huge push into corporate hospitality over the last couple years and some of the custom workflows I’ve seen for creating guest FAQs that the devices can respond to without bugging me or requiring additional pages in a physical house manual are appealing, something like VCS or a custom-designed audio FAQ.