Miami-Dade
http://www.miami-dadeclerk.com/DadeCOC/VAB.asp (Miami Dade VAB)
http://www.co.miami-dade.fl.us/pa/property_search.asp (Miami Dade Property Appraiser)

Broward
http://bcpa.net/value.asp (Broward VAB)
http://bcpa.net/ (Broward Property Appraiser)

Palm Beach
http://www.mypalmbeachclerk.com/tier2.aspx?id=988 (Palm Beach VAB)
http://www.co.palm-beach.fl.us/PAPA/index.htm (Palm Beach Property Appraiser)