It's a newer condo (about 10 years old?) that wasn't constructed properly. The homeowners' association sued the developer, won some damages, and are applying them to fixing certain things. The first round was seismic reconstruction, the second round was resurfacing the decks for units like mine, and this last round is re-tiling the roofs. Tuesday they'll be pulling off all the old tiles on the building that I'm in.

Luckily, the work isn't costing me anything. It's just inconvenient.