1921 I Street, NW
Thanks to an eagle eyed reader for spotting a Jetties permit coming to the former Juice Zone space (which closed in Oct. 2011) at 20th and I St, NW next to the Baja Fresh. This will be a fourth location for Jetties which has two other locations in DC. We judged their sandwiches back in April 2011. You can see their menus here.
According to the permit, the I Street location will have seating for 15: