A room packed with developers, investors and council staff heard how the Nine Elms development project is fast underway.
The conference, organised by New London Architecture (NLA) , saw speakers outlining how the project will take shape.
Visitors listened to presentations given by Sir Edward Lister on behalf of the Greater London Authority (GLA), as well as council leader Councillor Ravi Govindia and Transport for London (TfL).
Speakers told of developments coming to the area, including the new US Embassy building, development plans for Battersea Power Station and a new park.
Sir Edward said building work has already begun on creating the American Embassy building, a huge-glass cube costing about £620m to build.
There will also be more than 22,000 jobs created, as well as 11,500 retail units and thousands of new homes.
Coun Govindia, alongside Councillor Lib Peck from Lambeth Council, explained how the development will benefit both borough's.
He said: "Our vision is slightly different for our different bits. There will be private jobs and opportunities for both sides of the roads.
"There will be primary schools and perhaps a secondary school. We see the area feeding in from the outside and from inside the community."
Other development opportunities include the Roger Stirk Harbour, Nine Elms Parkside and a bridge crossing the River Thames.
Chrysostomos Loizou, of URS, said: "I'm interested in everything that is happening especially the Northern Line extension.
"I would say I am in support of it, the only criticism that I have is there is no landmark building like the shard."
But David Boardman, of the Kennington Association, said: "Our concern is the Northern Line extension, it does very little for Lambeth.
"We are very sceptical of what the extension in Lambeth will do for us, it will drain away from the Lambeth area."
A consultation about the project is expected to be posted to 40,000 homes next week.
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