A Sellbot Field Office is a Cog Building that is much like a mobile Cog headquarters. Unlike ordinary Cog Buildings, a Sellbot Field Office takes over the Toon Headquarters of a street. When that specific Toon Headquarters is captured, it is captured in all of Toontown's districts. To take a Sellbot Field Office down, multiple groups of Toons are each transported to an annex, a single wing of the entire building that acts as a health point. Each annex must be taken down for a Sellbot Field Office to be conquered.