They're not out there because that would be one of the greatest money-making machines ever invented.  

Wash the walls. 

Power washing the exterior, repairing the driveway, and painting the front door.

Metal above guter could use a power wash.

Acid washing when required is $500.

I've been doing D4D with Deal Machine and my own postcard campaigns.  

Wash dishes at the local restaurants.  

I am wondering what it takes to deliver a higher customer experience, equivalent to receiving a warm wash towel at a restaurant table before you eat. 

Are there some of the data aggregation sites such at Deal Machine or Prop Stream that have this? 

I love the concept especially given the need in your market for storing things like snow machines, boats, rvs etc, but also for repair or general "fab shops".As long as you are seeing the demand in your specific market for these spaces, and perhaps its worth getting some leases signed up prior to breaking ground but thats a personal preference thing, I think the numbers look promising if the use case is there.