Since the league's beginnings in 1917, the NHL has welcomed 37 teams. Of those, thirteen have relocated to a new city, eleven have changed their team name while remaining in the same city, and six have fallen on financial hard times and folded their operations.
The chart below shows the history of NHL expansion by year, team name and the expansion fee levied on the buyer by the league.
* Team was victim of NHL Renaming
^ Team was victim of NHL Relocation
# Team was victim of NHL Contraction
As indicated by the footnotes above, several teams have endured change in the form of renaming, relocation and contraction. The ordering of the symbols indicates the chronology of these events. The number of NHL teams and regular season games played by year may be found here.
The first five members of the NHL in 1917 gained admission without having to pay an expansion fee. Since then, all teams have paid a fee to join the league. Hovering between $12,000 and $15,000 in the 1920s, expansions fees jumped to $2 million in 1967 and tripled three years later in 1970 to $6 million where they remained (save surcharges to other teams and leagues) through the remainder of the decade.
After a twelve year span of a 21 team NHL, expansion began again in 1991 with fees 7.5 times higher than those paid by teams entering in the 1970s, ultimately ending up over 13.3 times by 2000. Current franchise valuations estimate the value of NHL teams ranging from $186 million (Florida Panthers) to $1.2 billion (New York Rangers).
On June 22, 2016, the NHL Board of Governors unanimously approved a yet-to-be-named Las Vegas team as its 31st franchise. The club, coming at a cost of $500 million (6.25 times greater than the cost of it's next youngest siblings, Minnesota and Columbus from 2000) shall compete in the Pacific Division commencing in 2017. The two day expansion draft to fill their roster is scheduled to begin on June 21, 2017.
Despite the escalating costs of purchasing a NHL team through expansion, the inflation calculator shows these teams to be more than holding their value in the terms of purchase price. This does not account for the annual operating losses for most NHL teams, which in the case of the Phoenix Coyotes resulted in losses of $54 million in 2009.
Two years ago the Glendale counsel voting 4-3 to keep the Coyotes for five more years, dashing the hopes of Seattle or Quebec City acquiring the club through relocation. Despite Quebec City being passed over today for an expansion franchise, allegedly owing to a lack of geographic balance and a weak Canadian dollar, Seattle and Quebec City remain frontrunners to host the NHL's next franchise, if the league opts to expand to 32 teams.
* See also History of NHL Contraction.
* See also History of NHL Relocation.
* See also History of NHL Team Renaming.