With the advent of fire damage, we have the command to repair fires. But the average person has no reason to care or to try and repair this damage. None-the-less would they necessarily possess the skills to do so.
While all players should be allowed to attempted to salvage things from a fire, I think it should be only the WCS employees that can actually repair it. Maybe tie the command to their uniform instead of the room?
There is also a lot of graffiti around town and while there are solvent cans that can remove it, they aren't exactly cheap. In fact, it's cheaper just to throw down more graffiti.
For the WCS employee however I would think there would be a private vendor for the solvent that is a much more approachable cost.