[7] On the agenda in the meeting between representatives of the neighbourly clubs, Jørgen Kristensen (Ballum IF), Lars Bach Sørensen (Skærbæk BK), Flemming Søndergaard (Skærbæk BK), Ove Danielsen (Højer IF), Keld Hansen (Løgum IF), Jørgen Juul Pedersen (Bylderup-Burkal IF), Gunnar Jordt (Tønder SF) and Flemming Jordt (Bredebro IF), was a debate between the disappointing results on the pitch, their common struggles in the lower tiers of Danish football, and wishes from the players of competing at a higher level.

[7] Following a determined effort to realise the project during the fall of 2003, a model for a future collaboration between the regional clubs was presented to their respective boards at a meeting in Løgumkloster in January 2004.

[7] Present at the meeting were 30 participants, who agreed to a month of considerment regarding their continued support for the process, as well as reflect on the option of involving youth teams in the merger, which had until that point only related to a senior side.

[7] After consulting their board and senior team, Skærbæk Boldklub and Højer Idrætsforening chose to withdraw from further participation, which representatives informed the other clubs at the next meeting in March 2004.

[7][9] Meanwhile, the representative from Løgum IF had decided to quit due to not having sufficient time to work voluntarily, which meant that a new collaboration committee was made up of Jørgen Kristensen and Orla Simonsen from Ballum IF, Ejvin Toft Nielsen and Flemming Jordt from Bredebro IF, Morten Gram and Morten Classen from Løgum IF as well as Gunnar Jordt and Torsten Vestergaard from Tønder SF.

[13][14] The overall objective for the first team was declared to be promotion in its second season, after which a period of stabilisation was expected before taking the next step up to the Jutland Series in 2007, the sixth highest level of Danish football.

[11][15] After the respective boards of Tønder SF, Bredebro IF, Løgum IF and Ballum IF had reached an agreement on the merger, the members of the collaboration committee made sure that all requirements for participation in DBU Jutland competitions were met before the holding of the extraordinary general assembly of the four parent clubs.

[7] On 5 August 2004, the final mandate to go ahead with the project was agreed upon by an overwhelming majority (90%) of the 150 voting attendees, who showed their support for a closer collaboration between the clubs.

[17] At the end of 2004, Gunnar Jordt and Torsten Vestergaard withdrew from the collaboration committee and were replaced by Børge Nielsen as Tønder SF's representative.

[7] The common collaboration committee, which was chosen instead of having a genuine board, consisted of nine members with the aim of having at least two representatives of each parent club present.

[6][7][22][23] Carsten Jørgensen and Torben Baun were appointed coaches for the new common under-19 team, which would play its inaugural season in the highest youth division of DBU Jutland.

[7] As a result of the positive output of the extraordinary general assemblies, all parent clubs involved in the merger decided to support the Tønder SF Serie 3 (eighth tier) team in the latter half of the 2004 season, and encouraged their best players to strengthen the Tønder SF team which enabled a turnaround and catch up of the leading clubs in the division, and participation in the playoff games for promotion to Serie 2 (seventh tier).

[26][27][28] First place and the subsequent promotion was secured in October 2004 at Løgumkloster Stadion in an 11–2 win over Broager UIF/Boldklub Frem Egernsund who had already suffered relegation from the division at that point.

[6][12] The new first team squad met for its first training session under the FC Sydvest 05 name on 29 January 2005 at the grounds in Bredebro, whereafter they played their first pre-season friendlies in February.

[33] Former chairman of Tønder SF, Gunnar Jordt, stated in June 2009 to the regional newspaper JydskeVestkysten that one of the upsides to collaborating in the FC Sydvest 05 structure had been the release of new resources, which meant that the separate clubs did not have a responsibility for their best first team players anymore.

[34] The first goal occurred after 11 minutes, when FC Sydvest 05's attacking midfielder Jannick Clausen, originally part of Løgum IF, scored directly from a corner.

[40] As a result of ending top of the group, the club automatically qualified for the Jutland Championships for Serie 2 teams, where they entered the quarter-finals.

[44][45] Five points in five matches became a fact after the beginning of FC Sydvest 05's tenure in the Serie 1, and at the end of the spring season the team was placed in the lower league table, but above the relegation zone.

[47] Following the first two seasons, head coach Otto Christensen, after failing to reach an agreement on a contract extension with the collaboration committee, announced his departure from the merger club.

[22] Kim Munch was presented as head coach of the club at a press conference before the home match at Tønder Stadion against Fredericia fF on 10 September 2006.

[23][49] Chairman of Sydvest 05, Flemming Jordt, explained the decision by stating that "[we] wanted a coach from outside [the club], who had no knowledge of our players in advance, and [someone who] possessed the right qualifications".

[52][53][54] In the spring of 2007, Flemming Jordt had to scale down on his involvement in FC Sydvest 05 and therefore passed on the torch of chairman of the collaboration committee to Børge Nielsen, who had up until that point acted as representative of Tønder SF Fodbold.

[78] Results in the remainder of the competition secured promotion for FC Sydvest 05 to the Jutland Series, the top regional tier and the fifth-highest division overall in the Danish football league system.

These were defender and former SønderjyskE-captain Jacob Stolberg, midfielder Thomas Christensen, forward Kim Nielsen, and striker Karsten Viborg, who arrived to strengthen the first-team squad ahead of the promotion play-offs in 2010.

[118][119] On 30 March 2011, former Odense Boldklub player Ulrik Pedersen was announced at the new first team head coach, replacing Kim Munch from the start of the 2011–12 season.

[123] A 4–0 away win meant that the club reached their goal of playing in the Danish third highest division in only two seasons, by ending second in the group, only behind Middelfart G&BK.

On the other hand, the concept has been spreading activities and alternating between home grounds of the clubs involved in the merger, in order to accommodate all parties of the cooperative.

In the event of larger football gatherings, such as the Danish Cup fixture against AC Horsens in August 2007, mobile stands have been installed which have been able to hold 400 seated spectators.

[117] This meant that four of the six matches of the fall season were played at Løgum Stadion, which was the only ground capable of having a field the length of 110 m between the touchlines per the DBU requirements.

[132] For example, a number of matches were moved in the 2008–09 season because of heavy summer rains which partly flooded the pitch at low-lying Tønder Stadion, located close to the Vidå Creek.