Over the past decade, a forest of slender, cloud-piercing towers has been shoehorned into modest-sized lots along West 57th Street and lower Fifth Avenue. Skyscrapers on broader footprints have shot up from the Hudson Yards to the World Trade Center.

While not on the same scale, even the Upper West Side — long resistant to bulky, boxy, outsized glass-sheathed structures — has been getting its fair share since 2007, when the 37-story Ariel East and 31-story Ariel West first dwarfed its neighbors in the Broadway corridor.

For years, the Upper East Side, with plenty of exceptions, was a low-rise redoubt. Not anymore. The dawn of the Second Avenue subway, and a long-anticipated, if embryonic, eastward flow of residents, has fueled a construction boom that is literally raising the roof on the neighborhood.

And it has already provoked a significant backlash: Community Board 8, which represents the old Silk Stocking District, and City Council Member Ben Kallos, who has campaigned to “Stop Super-Scrapers,” are backing a proposal to rein in the loftier heights sought by dozens of developers.

“No one wants to live in the shadow of a billionaire,” Kallos said in an interview. “When you have buildings that are 60- or 100-feet high, and then suddenly someone wants to build 500-feet high or taller, well, that is when folks take exception.”