Tickets for Seahawks games this year sold out almost as quickly as they went on sale.

And the Seahawks are on a streak of 87 straight home sellouts, playing in front of a capacity crowd for all but one game since 2003.

So the team is considering a logical response — creating more seats at CenturyLink Field.

Team officials confirmed Thursday they are exploring adding 2,000 to 3,000 seats, beginning with the 2014 season. first reported the news of the expansion, which would bring capacity to roughly 70,000.

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The team’s media guide lists capacity at 67,000 fixed seats — 21st of 32 NFL teams.

But attendance is routinely higher — a crowd of 68,338 attended the team’s 29-3 win over the 49ers on Sept. 15, a stadium record for a Seahawks game. Seattle’s average of 68,212 ranks 20th in the NFL.

The seats would be added in the south end zone, where the 12th Man flag is raised, though many details are still to be worked out.

Adding seats has always been considered an option — the team’s media guide notes that the number of fixed seats could be expanded to 72,000.

The Seahawks sold 62,000 season tickets this season (a number that was capped so some single-game seats would be available) and had a 98 percent season-ticket renewal rate, a franchise record.

Single-game tickets sold out within hours of going on sale in July.

The team says it has a waiting list of roughly 12,000 for season tickets through its Blue Pride Membership program.

Routinely having a full house has given the Seahawks what many regard as the best home-field advantage in the NFL. Seattle is 61-29 at home since CenturyLink Field opened in 2002, the second-best mark in the NFL behind Green Bay’s 63-26.

Vivid proof of how loud the stadium gets came during the game against the 49ers, when a decibel reading of 136.6 was recorded to set a crowd-noise record as judged by the Guinness Book of Records.

CenturyLink Field is managed by First & Goal Inc., an entity created by Seahawks owner Paul Allen.

Bob Condotta: 206-515-5699 or

On Twitter @bcondotta