On Wednesday, the FCC voted in favor of a new rule that nullifies existing exclusivity provisions between building owners and cable operators, and the Commission prohibited any new deals between the two camps.

According to the Commission, nearly 30 percent of Americans live in multiple-dwelling units (MDUs), and the numbers are increasing.

“All consumers, regardless of where they live, should enjoy the benefits of competition in the video marketplace,” said FCC Chairman Kevin Martin. “Exclusive contracts between incumbent cable operators and owners of multiple-dwelling units have been a significant barrier to competition.”

The new rule has been backed by telcos such as AT&T and Verizon, since they now offer a competitive TV offering. And the ruling is yet another blow to the cable industry from the competition-seeking chairman.

Current FCC rules allow apartment tenants to install parabolic antennas to receive satellite services.