Three luxury residential towers, including multi-level penthouses, have been added to plans for the Al Habtoor City development near Business Bay, Dubai developer Al Habtoor Group announced on Monday.
The towers will join three internationally branded hotels, the W Hotel, St Regis and The Westin, as well as an aqua theatre.
Spread across 10m square feet, the entire project will now cost $3bn.
The towers include two at 74 floors and one at 40 floors, with a total of 1,460 apartments, ranging from one to seven bedrooms. Eleven penthouses will also be built.
Each of the towers will house a single-story 720sqm penthouse and two two-storey penthouses ranging from 795sqm to 820sqm.
Each one will feature a private sky garden and swimming pool.
There also will be two designed in VIP/presidential style, with four storeys each spread across 3000sqm.
A sky lounge will offer 360-degree views of Dubai.
"Residents of the VIP penthouses will be ensured exclusivity," a statement from Al Habtoor Group said.
"The two VIP/presidential style penthouses will be uber-stylish, fitted to the highest standards, with the most exclusive finishing materials from some of the world's top brands."
However Al Habtoor Group chairman Khalaf Al Habtoor said the VIP penthouses will not be sold.
"But if we did put them on the market, we would not sell any of them for less than $250m each," he said.
During the announcement on Monday, vice-chairman and CEO Muhammad Al Habtoor also revealed the company was investigating how to air-condition the outside boulevard area to allow for year-round dining.
In total, the project will include more than 3,000 hotel and residential suites and is expected to receive 20,000 visitors a day.
It is being built on the site of the former Metropolitan Hotel, on Sheikh Zayed Road just south of Business Bay, and is expected to be completed in 2016.
The Dubai Water Canal announced last week also will run through the city.