Work will include replacing the existing floodlights with a new LED system, installing a new additional TV gantry and studio and a new hospitality area.
Media facilities will also be improved while the post-match press conference area will be upgraded.
A new matchday restaurant will be added in the East Stand and the players and managers will enjoy upgraded lounges for their families and guests.
Albion executive director Martin Perry said: “While Chris Hughton, Tony Bloom, Paul Winstanley and Paul Barber have a busy summer ahead in terms of player recruitment – the project team have a huge amount of work to undertake to ensure the stadium is ready for Premier League football next August.
“It’s something we’ve been planning for a long time, and the plans have evolved in the past four or five years, as each year the requirements change, but we are thrilled that thanks to Chris and the players’ achievements we can finally put the plans into action.”