Where are the Fanpop headquarters?

The Fanpop "office" and headquarters are both located in San Francisco (they're actually different locations!)

The office itself is a rather humble affair. It's someone's living room. I won't say who or where since that would be yielding up too much privacy for the person's whose home it is, but here is a photograph of San Francisco that actually includes the building where we work! The photo does not include our HQ location).