http://www.zillow.com
Usefulness:
This site has quick mapping features, shows a very delayed on-market & solds info & some details from the assessors card: year built, etc.
Caution:
I found the assessor info significantly inaccurate: wrong # of baths, wrong s/f, etc.
Sales include mortgage company buy backs & loan balance, not a real sale.
"Values" show the bouncing ball the from the assessor office - no where close to realistic.
Bottom line:
After browsing the site, contact us with your info if you need
- a property tax protest
- a market analysis
- a buyer agent with current MLS data to represent you in purchase negotiations