My long standing plan has been to convert my 20′ X 20′ lower garage space into some kind of living area with a countertop, sink, and something on the floor like tile, wood or vinyl planking. The first step would be the repairs to the interior walls where water rotted out a couple of spots and then add new windows and exterior siding bottom and top. That was accomplished a few years ago. This year I hope to start tackling the interior to make it more utilitarian and comfortable. Step one is the restoration of some plumbing that existed prior to the water damage including the outdoor shower connection, and cold water faucet; along with a new sink (actually an old vintage 1940’s sink), counter, and storage cabinets. That has now begun.
It all starts with the base for the cabinets. 
This base is almost five inches tall since I will be adding an insulated sub-floor, and then add the flooring on top of that, making my countertop the standard 35″. The base is then leveled and tied into the concrete floor and wall. 
I built all the cabinets first. 
Tied everything into the base, and then added the countertop… 
… and the sink. 
All the plumbing for the outdoor shower, cold water faucet restoration, and the sink all runs behind the cabinets 
Finally tied down the sink to the counter. The last detail is some work on the sink surface to repair some small chips in the porcelain.