I wonder if the square footage is accurateI'll bet there are a lot of square feet added that don't show up in the public records. Question refers to 1600 Pennsylvania Ave NW, Washington, DC 20006February 18 200900YesReport a ProblemProblemSelect oneOffensive contentIrrelevant contentSpam (pure self-promotion)OtherDetailsYour emailPlease enter a valid email address.Submit CancelContent flaggedWe will review this content. Thanks for helping make the site more useful to everyone. To learn more, read Zillow's Good Neighbor Policy.We're sorry. This service is temporarily unavailable. Please come back later and try again.