It’s fairly easy to research the potential resale value or sales history of their home — or their neighbor’s — by plugging in the address on Internet sites like Cyberhomes.com, RealEstateABC.com and Zillow.com. However, while all three allow house hunters to price or compare properties they may be interested in, and potential sellers to get guidance in setting an asking price, the sites aren’t always 100% accurate. All these sites utilize at least some public information, so in regions where housing data is not complete or up to date, these sites’ calculations may fall short.