empty retail space in the Tivoli building at 14th and Park, and PoP reports he's hearing "scuttlebutt" that it will be local burger chain Z-Burger. I first heard about Z-Burger maybe coming to the neighborhood in April, but haven't heard anything about it since then.
Z-Burger is a smallish local chain that seems to be fairly good, getting 4 and 3.5 stars on Yelp for its two DC locations in Glover Park and Tenleytown, respectively. They have a ton of shakes and are also open late at night, midnight on Friday and Saturday at the Tenleytown location.
Now I like burgers and all, but we already have a Five Guys in the neighborhood, and I don't want Columbia Heights to become more of a big chain mecca. Then again, considering the success of Mayorga and Nori in that location, maybe it's the best we could hope for? And it's always better to have some kind of retail or food spot than a bank or cell phone store.