They shot these scenes at an apartment house at 263 Glendora Avenue, in Long Beach, CA.

That's in the Belmont Park section of Long Beach, on the mainland, west of Naples Island.

It's a few blocks northwest of Vogel's house (appropriately enough), and southeast of the church where they filmed her funeral.

It's also close to the lot where they filmed the food truck date scene, the park where they filmed the yoga class scene, the spot where they found the first victim of the Brain Surgeon, and the park where Harrison played his soccer game.

A.  In the early seasons, I usually had to hunt down the locations after viewing the episodes, using clues from the various scenes.  By the now, though, I've developed a small group of fans, spies & tipsters who kept an eye out for Dexter filming in their neighborhoods, and let me know in advance when something is about to film there.

Between those reports, my own personal reconnaissance around town, and a few new resources I discovered, by the time the new first episode airs, I already know most (but not all) of the filming locations, and only need to watch the episodes and match up the scenes with the correct locations.

This group of helpful fans includes Rick, Ellen, Suzi, Elaine, Mia, Julie, Kerry, Joel, Eric, Jeff, & others. My thanks to all of them.

Fortunately, the producers put a sign out front with a fake name, but the actual street address.  Since I knew there was a Glendora Avenue in Long Beach, I compared the real 263 Glendora with the apartment house in the scene, and it was a match.