Gunnersbury Park's long-awaited regeneration is set to begin around next April after funding was confirmed today.
The project to restore the 186 acre park, which straddles Hounslow and Ealing boroughs, is expected to take between 18 months and two-and-a-half years, a spokesman for Hounslow Council added.
Bringing boating back to the Round Pond, building a new cafe and restoring the Orangery are just some of the work that money will fund.
The councils expect to hear in the next month whether their bid for another £4.1 million from the Heritage Lottery Fund (HLF) has been successful.
That money would be used to restore the park's Large Mansion and other listed buildings in the park on English Heritage's 'at risk' list.
Proposals from council consultants the following year to sell part of the park for luxury housing to raise the money needed to return its crumbling buildings to their former glory met with a furious response.