Fortunately, as we paid for materials, we didn't pay anything upfront. 

An alternative situation to the one presented is: Party A and Party B co-own a property 50/50 and Party B decides to build an in-law unit in the back yard, which would increase their ownership interest/stake.

I read their proposal materials and it seems like they've been doing fairly well since 2016, with >20 units flipped and ~25% annualized return.

While it is certainly valuable to gather info from the experience of others, it's probably best to determine your own criteria of what makes a "grade" (whether income levels, population increasing/decreasing, crime rates, etc) rather than just take someone's opinion or marketing materials as the end all be all.  

Even if we wanted to do this, the stile is apparently not wide enough to accommodate the lock, so the Kaba is out.Does anyone know another alternative that would allow renters to gain access without using a key and that could be managed remotely?

paid cash, material on credit cards How did you add value to the deal?

MATERIAL LISTJ&K Cabinetry, RTA cabinets located in OrlandoIKEA countertopsTile and other supplies mostly from Home DepotDoors from Habitat REStoreHVAC from Parrish Heating & CoolingUsed appliances (I'm installing new next time, used wasn't worth the savings)

material on credit card How did you add value to the deal?

I think it ran about $2,400 for all the materials including the weather-head & all ancillary conduit.BUT build a shed or a deck & you'll need a permit ???

bought with cash, credit cards financed material, cash and credit card financed labor How did you add value to the deal?