The DOB has created an after-hours variance map, so you can see if a nearby building is permitted to keep you up at night or wake you up on a Sunday morning. Give it a spin.

An after-hours variance (AHV) permit is required to perform any building construction work before 7a, after 6p or on the weekend.

The map’s got some bugs, but they are easy to work around. A quick glance around Tribeca proper shows there’s a variance at 99 Hudson, 51 White, 70 Franklin and 390 Greenwich for weekend work. The latter is Citigroup, which I thought was wrapping up on its weekend and late-night work, though this permit goes from Dec. 30 to Jan. 12.

The release added this: “After-hours variances are granted primarily when it’s safer or less disruptive to a neighborhood to perform the work at night or on weekends. For example, variances are granted for work done near schools or public spaces, for heavy construction work that might require sidewalks to be closed to protect pedestrians, or for work that would cause traffic gridlock if it’s done during the day. Certain types of work such as concrete pours and adjustments to cranes need to be performed when there is minimal pedestrian and vehicular traffic in the area, or when stopping them midstream may pose a hazard to workers and the public.”

My take: car traffic conditions take precedence over the quality of life of residents.