The sanction was granted by state cabinet at its meeting chaired by Chief Minister Shivraj Singh Chouhan, an official release said.
"The cabinet gave revised sanction of Rs 346.75 crore for construction of Mantralaya Vallabh Bhavan annexe. The sanction has been accorded on the recommendation of the project examination committee of the Urban Administration and Environment Department," the release said.
The cabinet also sanctioned creation of 208 posts in various departments including 62 posts for the Vidhan Sabha Secretariat, the release said.
The cabinet decided to create 34 posts in the Directorate of Integrated Child Development Service and nine additional posts in Directorate of Women's Empowerment and also gave its nod to create 14 new posts to strengthen the Directorate of Medical Education.
It also decided to give a one-time relaxation in ban on direct recruitment to fill up 470 posts in teachers' training institutes of the Rajya Shiksha Kendra.