Charter Communications on Friday received federal regulatory approval for its acquisition of Time Warner Cable and Bright House Networks.
The Federal Communications Commission said it had approved the $71 billion deal, as expected, with conditions designed to spur competition among Internet service providers and increase the number of homes with broadband Internet connections.
The acquisitions would give Charter more than 23 million customers in 41 states.
The deal still needs the approval of the California Public Utilities Commission, which has scheduled a vote for Thursday.
A judge in San Francisco reviewing the deal for the commission recommended approval last month, but he added conditions aimed at expanding the number of families who receive high-speed Internet service in their homes.
The Justice Department, which conducted an antitrust review, said last week it would allow Charter to complete the acquisitions.
FCC Chairman Tom Wheeler announced last week that he would support the deal after Charter agreed to several conditions.
Among them were a requirement that Charter expand broadband service in areas with spotty coverage and provide low-cost Internet access to at least 525,000 low-income homes.