Cost difference between a single family vs. 2-family property?I am buying this property in Queens, NY. It was originally a single family house, the sellers had put in an extension about 10 years ago and made it a legal two-family house (it now has a separate 1-bed apt on the 2nd floor). The asking price of the house is $700,000. The single-family house next door was sold about a month ago for $460,000. The two houses are identical except this one does not have an extension and it was not renovated as nice as the two-family house. Question: the price difference between those two houses is about $250,000, is this considered normal? If everything else's identical, typically how much more does a 2-family property cost compared to a single family house? October 02 2012 - Rego Park00YesReport 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.