Working collaboratively with the club has enabled work to commence on the cutting-edge complex at the Premier League side’s Staplewood training ground at Marchwood, near Southampton.
To complement the current excellent training set up, the new enhanced facilities – also including a new kit store – will be used by all of the Saints’ senior teams.
They include the women’s team which has just achieved promotion to the Women’s Championship, as well as the club’s development and academy squads.
The new building will treble the size of the existing gym from 150 sqm to 450 sqm and will further improve Saints’ training facilities to be considered amongst the best and most modern in the Premier League.
Brymor Construction, which is celebrating its 35th anniversary this year, has been appointed as main contractor for the project.
Brymor chairman Stephen Morton, who founded the company with his wife Jan in 1987, said: “As a Hampshire firm it is a privilege to undertake this superb project for Southampton FC.
“The new gym will mean that Southampton’s elite footballers will have modern, state-of-the-art facilities to rival any Premier League side in the country.
“The club brings a great deal of prestige and economic vitality to the area, and we are proud to be able to play our part in helping it to even greater success on and off the pitch in the future.
“Many of our employees are Saints fans and they are excited about the prospect of becoming involved with the club.
“It is also another landmark project for us as we celebrate our 35th anniversary year. We are thrilled to get the project started.”
The new facility, which gained planning consent in January from New Forest District Council, will be built as an extension to Staplewood’s Markus Liebherr Pavilion.
Southampton FC has based its training ground at 42-acre Staplewood in Long Lane, Marchwood, for nearly 30 years.
Brymor completed its largest project to date last year, the flagship Horizon Cruise Terminal for Associated British Ports (ABP) at the port of Southampton.
The £75m turnover company, headquartered at Denmead, is a collaborative and flexible business with a seamless approach from conception to completion, with the focus on innovative solutions, quality, safety and transparency.
It works in a wide range of sectors, including education, healthcare, hotel and leisure, façade rectification, infrastructure, commercial and industrial, defence, heritage, housing and retail.