I feel that the suggestion to sell the existing building and convert it back to mixed use while building a new one (please don't make it so fugly) sounds like a reasonable proposal.
+1
This idea solves a lot of problems. Have you ever tried to live in the same house you were renovating? It's not fun. What elevators, bathrooms, etc will the JEA employees use as the old ones are being worked on? It doesn't make any sense to renovate the building as the current staff continues to work there. Why not repurpose the building as mixed use after a new building is built on some vacant downtown land? This makes everyone happy.
1.) Downtown gets more citizens.
2.) Downtown gets more businesses.
3.) Downtown gets a new building on unused land that is currently an eyesore.
4.) JEA employees don't have to walk multiple stories as the elevator is being overhauled. I'm sure they have pregnant and physically disabled employees. Expecting a disabled or pregnant person to use the stairs is not a great plan.
While I understand the urban renewal bias of this website (I myself have done and am in the middle of an expensive urban renewal project), just painting the 'save everything' and 'anything new is bad' brush on all development seems short sighted in this case.