He said the plan will be on public display at the Kuala Lumpur City Hall headquarters on Jalan Raja.
He made the announcement while wrapping up his ministerial speech on the mid-term review of the 11th Malaysian Plan.
Work on the Kuala Lumpur City Plan began in 1998 and it was finally finalised in 2012.
But it was not gazetted, causing development to continue haphazardly.
In the past, Kuala Lumpur MPs had raised concerns over the failure to gazette the plan, saying this could cause the city to become the most unplanned and congested urban centre in the world.
Last year, DBKL said it was pointless to gazette it as it was due to expire by 2020. It said it would instead look at the Kuala Lumpur Structure Plan 2050.
Khalid said he was told by the Attorney-General’s Chambers that the KLCP 2020 was gazetted yesterday.
He said the rakyat could buy a copy of the plan from the middle of next month.
Khalid said some of the present development projects were against the plan but the developers had followed the law and court procedures.
Due to that, no action would be taken against these projects.