How Much is Your Neighbor's House Worth?

How do we always track down someone's house value? A few trade secrets.

By: Mary Clare Glover

Nosy neighbors were thrilled last February when Zillow.com launched. Founded by Rich Barton and Lloyd Frink, the duo that created Expedia.com, Zillow.com uses square footage and recent comparable sales prices to provide free home-value estimates.

Zillow's success has led to copycat ventures, all of which have enormous voyeuristic appeal. Whereas real estate used to be a private matter, it's now possible to anonymously peak at the house values of neighbors, bosses, relatives, friends, and ex-boyfriends (not that I would EVER do such a thing).

Here's a round-up of some good sites for real-estate snooping:

Cyberhomes.com

Eppraisal.com

Homevaluecma.com

RealEstateABC.com

Reply.com

Zillow.com