Comcast Corp. is doubling down on Atlanta with plans to expand its Southeastern headquarters.

The Philadelphia-based media and technology company is considering relocating and expanding its regional headquarters in the Norcross, Ga., area.

Comcast (Nasdaq: CMCSA) is scouting for about 150,000 square feet of office space, with plans to add up to 200 administrative jobs, according to sources. The company is said to be considering the Peachtree Corners submarket in Gwinnett.