the 2015 list is not out yet but below is the 2014 Forbes list of NFL franchise values.
http://www.forbes.com/nfl-valuations/list/
Rank, TeamValue ($mil), 1-Yr Change (%)
#1Dallas Cowboys 3,200 39
#2New England Patriots. 2,600 44
#3Washington Redskins 2,400 41
#4New York Giants. 2,100 35
#5Houston Texans 1,850 28
#6New York Jets 1,800 30
#7Philadelphia Eagles 1,750. 33
#8Chicago Bears 1,700 36
#9San Francisco 49ers 1,600 31
#10Baltimore Ravens 1,500 22
#11Denver Broncos 1,450 25
#12Indianapolis Colts 1,400 17
#13Green Bay Packers. 1,375 16
#14Pittsburgh Steelers 1,350 21
#15Seattle Seahawks 1,330 23
#16Miami Dolphins 1,300 21
#17Carolina Panthers 1,250 1
#18Tampa Bay Buccaneers. 1,225 15
#19Tennessee Titans 1,160 10
#20Minnesota Vikings 1,150 14
#21Atlanta Falcons 1,125 21
#22Cleveland Browns 1,120. 11
#23New Orleans Saints 1,110 11
#24Kansas City Chiefs 1,100 9
#25Arizona Cardinals 1,000 4
#26San Diego Chargers 995 5
#27Cincinnati Bengals 990 7
#28Oakland Raiders 970 18
#29Jacksonville Jaguars 965 15
#30Detroit Lions 960 7
#31Buffalo Bills 935 7
#32 St Louis Rams. 930 6