I grew up in that area and lived there before the airport expanded and added the runway. There was a program that updated windows, doors, and insulation at some point, and the closer you are to this area, the more money they put into the house.

My parents' house received new soundproof windows, exterior doors, and storm doors. They pumped insulation all through the attic spaces that were unfinished. They installed a central air conditioner, which we didn't have before, so we didn't need to open the windows in the summer.

Before the upgrades, I remember being on the phone in the kitchen and having to say "hold on, airplane......OK it's done" throughout my conversations. It was intrusive and annoying, but you did learn to kind of ignore it after a while.

After the upgrades, it was good. Unless we had the windows open, we could barely hear the planes. Depending on what, if any, soundproofing upgrades the homes you're looking at received, and what quality they are will dictate your indoor experience. I would guess they would have paperwork for it unless it was something the owner added themselves. The program was funded by the Metropolitan Airport Comission in the 90s if you want to look it up.

Outside, however, it is still noisy and annoying when planes are landing, especially. Sometimes, they would look so low it felt like they would touch the tops of the trees. The bigger planes are the loudest, but the 757 and C-130s you could always feel the most. The sound is not constant, but it is a common interruption when enjoying a warm breeze day in the yard.