okay, they have a name now: "hop-backs"

Click on the link to read this Urban Turf DC article about "hop-backs."

Bloomingdale has two hop-backs -- 20 Channing St NW and 14 Channing St NW.

20 Channing St NW's hop-back is under development now.

Forget Pop Ups, Say Hello to the Petworth Hop-Back

        

DC has plenty of pop-ups, but now there is a new style of residential redevelopment project: the hop-back.

   

Developer Eric Hirshfield and builder Matt Shkor of Potomac Construction Group are partnering on a six townhouse-style condo development that would create a rear addition with what Hirshfield is referring to as a “hop-back”, where an addition is constructed at the back of a lot behind the existing structure.

                  

As designed by James Foster of Arcadia Design, the Petworth development would deliver three units between the street-facing adjacent properties at 429 and 431 Quincy Streets NW (map) and an additional three units in a rear addition, each of which will have a basement and three stories plus a roof deck. 

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