I find Zestimate over time to be useful. I've been watching my Arizona property climbing up since 2010 when it was estimated at rock bottom, or about 50% of it

I find Zestimate over time to be useful. I've been watching my Arizona property climbing up since 2010 when it was estimated at rock bottom, or about 50% of its purchase value (sigh). Now it's estimated to be about 90% of its pre-crash value. But as with all private transactions, bottom line it's worth what someone's willing to pay for it.