It marks a huge day in the history of the Premier League club as they increase their capacity, alter their home of over 100 years and ultimately significantly boost their revenues.
Here’s everything you need to know…
What will it cost?
The redevelopment of Stamford Bridge has been estimated at £500million.
Are there any more hoops Chelsea need to jump through?
However a way to redevelop Stamford Bridge, their home since 1905, was found.
The plans were granted permission by Hammersmith and Fulham council in January before they were sent to City Hall to be rubber stamped. Sadiq Khan gave his permission, which represented the final major hurdle to work beginning. However the club noted that ‘further steps lie ahead, both during and after the planning process, before construction work can commence.’