[14] In October, a Thurston County Superior Court judge ruled that the legislature acted properly and in the public's interest, and he dismissed the pending lawsuit.

Other details of the lease include the availability of affordable seats, a coordinated effort with neighboring T-Mobile Park (the Mariners' current ballpark) to prevent gridlock, a provision for naming rights, the investment in public art at the stadium, and the giveaway of a luxury suite to a fan each Seahawks' game.

[19] The architectural firm Ellerbe Becket, in association with Loschky, Marquardt and Nesholm (LMN) Architects of Seattle, designed the 1.5 million square feet (140,000 m2) project.

The designers were challenged by the soft soil at the site since it was a tidal marsh until public works projects in the early 20th century adjusted the waterline of nearby Elliott Bay.

Improvements to the stadium made before the start of the 2022 Seahawks season include the conversion of an unused 6,300-square-foot (590 m2) space below the Hawks' Nest into a food and beverage area, the addition of an open cashierless concession area on the concourse behind the Toyota Fan Deck, and the replacement of a pair of video display boards at the north end of the stadium with Diamond Vision boards from Mitsubishi Electric that were more than double the size of the pre-existing ones.

[54] The stadium has a public art collection that includes Earth Dialogue, a series of four disks by Bob Haozous on the north side of the Hawks' Nest that faces Downtown Seattle.

[32] In order to keep a grass surface robust under heavy football use during late fall and early winter rains, a $1.8 million irrigation and heating system would have been required.

[57] The coach of the Seahawks at the time, Mike Holmgren, said that FieldTurf installation was the right decision and stated that "the players love it, and I think this surface will offer a better product on the field for the fans.

"[58] Local soccer fans were concerned that the lack of a natural grass field would hinder Seattle's chances of receiving an MLS expansion franchise.

[66] In 2014, the field was criticized during an ESPN broadcast after an Amazon corporate event involving a game of Quidditch damaged the pitch before a Sounders match.

The new paint is relatively easy to remove with a power washer and a special chemical solution, a process that the company describes as environmentally friendly.

[111] The Giants' general manager, Ernie Accorsi, asked an NFL senior vice president whether the Seahawks had broadcast artificial crowd noise over the public address system during this game.

The hometown Washington Huskies played their 2005 season opener against the Air Force Falcons at the stadium in Tyrone Willingham's first game as head coach.

[137] The Cougars went 6–6 in their annual Seattle home game, which generated additional revenue that was invested in facilities for the football program while also increasing exposure to the western side of the state.

[138] In April 2009, it was proposed that the annual Apple Cup between the Seattle-based Huskies and the Pullman-based Cougars be hosted at CenturyLink Field for six years beginning in 2010.

[57][158] Seattle was the site of the 2005 CONCACAF Gold Cup Group B opening round between the national teams of the United States, Costa Rica, Canada, and Cuba.

[166] Seattle will host the Sounders' three group stage matches during the 2025 FIFA Club World Cup and three additional games after the installation of a temporary grass surface.

[180] In 2008, the MLS expansion franchise Sounders FC decided to develop the Starfire Sports Complex in nearby Tukwila, and the USL team played most of the season at that facility.

[188] The club hoped to create an intimate environment as well as a supply-and-demand factor that would reward season ticket holders and encourage early purchase of seats.

[196][197] As of 2019[update], the regular season MLS capacity at Lumen Field is listed as 37,722 seats, with four matches scheduled to use larger sections of the stadium.

[199] On October 15, 2011, additional seats were available for a record crowd of 64,140 during the final regular season home match, a Sounders 2–1 win followed by ceremonies honoring retiring goalkeeper Kasey Keller.

[200] And on October 7, 2012, another attendance record was broken when 66,452 fans were present for a 3–0 win over the Portland Timbers, following a ceremony awarding retired Forward Roger Levesque a Golden Scarf.

[216] The largest concert attendance in the stadium's history was set on July 22, 2023, by Taylor Swift's The Eras Tour; 72,171 spectators watched at Lumen Field on the first of two days.

[219] The playing surface was divided into several pitching areas while the north lot and event center include performance stages, batting cages, and museum exhibits.

Motivations for the experiment included conducting a quick-reaction exercise for the seismometer network team to install sensors and interpret results, and to test the ability to handle increased web traffic from interested visitors from the general public.

[245] During two Taylor Swift concerts for The Eras Tour in July 2023, PSNS recorded a maximum ground acceleration of 0.011 meters per second (2.2 ft/min) with peaks similar to a magnitude 2.3 earthquake.

[264][265] The pouring rights of non-alcoholic beverages at the stadium were initially held by The Coca-Cola Company, which had a longstanding partnership with the Seahawks prior to 1998, when the team partnered with PepsiCo.

[267] Amid increasing financial turmoil for Jones Soda, the company renegotiated its contract with the Seahawks in September 2009, relinquishing the rights to provide energy drinks and water along with a luxury suite.

[268] Both parties ultimately announced their mutual decision to end the Jones sponsorship in June 2010,[269] following which Coca-Cola reclaimed the vending rights with a five-year agreement.

Local governments compromised with both the Seahawks and Mariners on the location of new ramps over the train tracks that run along the east sides of Lumen Field and T-Mobile Park.