When Is Big Brother On? All About Season 27’s Episode Release Schedule

Houseguests have checked into Big Brother season 27’s Hotel Mystère — and fans are already watching their every move.

The long-running CBS reality competition series is back for another season filled with twists and turns, like the “mystery Houseguest” who was unmasked during the premiere. In July 2025, host Julie Chen Moonves told PEOPLE that the new season is “spooky,” with the contestants living in a Clue-esque house.

For Big Brother fans who can’t get enough, there is plenty to watch this summer. Not only is the series on three times a week — with Wednesday episodes being a supersized 90 minutes — but there are also live feeds and a new companion series, Big Brother: Unlocked.

The bonus show will air every other Friday, starting July 25. According a CBS press release, it will have three Big Brother all-stars “offer never-before-seen broadcast footage from the house, exclusive interviews, surprise guest appearances and unprecedented behind-the-scenes access.”

With so much happening in the house, how can fans watch Big Brother? Here’s everything to know about Big Brother season 27’s episode release schedule.

When did Big Brother season 27 premiere?

Big Brother season 27 premiered on July 10 with a 90-minute episode.

During the premiere, season 13 winner Rachel Reilly was unmasked as the “mystery Houseguest” who would be joining the contestants in Hotel Mystère.

In July 2025, Chen Moonves told Entertainment Weekly that “people should be afraid of [Reilly] and of getting in her crosshairs.”

When do new episodes of Big Brother air?

Big Brother airs on Wednesdays, Thursdays and Sundays at 8 p.m. ET/PT.

Thursday and Sunday episodes are 60 minutes long, while Wednesday episodes will clock in at 90 minutes.

Beginning July 25, the companion series Big Brother: Unlocked will give viewers exclusive behind-the-scenes access to the game. According to the announcement, it will feature three all-star players who will “share firsthand insight and expertise as they analyze gameplay, assess the competition and give their insider’s perspective.”

Big Brother: Unlocked will air every other Friday on CBS.

What is the episode release schedule for Big Brother season 27?

Starting July 20, the schedule for the season will be:

• 90-minute episodes on Wednesdays at 8 p.m. ET/PT, including July 23, July 30, Aug. 6, Aug. 13, Aug. 20, Aug. 27, Sept. 3, Sept. 10, Sept. 17 and Sept. 24
• 60-minute episodes on Thursdays at 8 p.m. ET/PT, including July 24, July 31, Aug. 7, Aug. 14, Aug. 21, Aug. 28, Sept. 4, Sept. 11, Sept. 18 and Sept. 25
• 60-minute episodes on Sundays at 8 p.m. ET/PT, including July 20, July 27, Aug. 3, Aug. 10, Aug. 17, Aug. 24, Aug. 31, Sept. 7, Sept. 14, Sept. 21 and Sept. 28

Are there live feeds for Big Brother season 27?

Yes, the live feeds are back for Big Brother season 27. There are four separate live feeds, plus a “quad view” where viewers can watch all four at once.

They are available to stream on Paramount+ and Pluto TV.

This season, the series removed the “Live Chat” feature, where fans could discuss the live feeds as they watched.

“We’ve made some changes to the Big Brother Live Feeds based on subscriber feedback and engagement,” a help page for the series reads. “At this time, the Chat function in the Live Feeds player is unavailable.”

When is the season 27 finale of Big Brother?

The finale of Big Brother season 27 will air on Sept. 28 at 8:30 p.m. ET, per Parade. The winner of Big Brother will walk away with a grand prize of $750,000.

This means that the season will run for 83 days in total, compared to season 26’s 90 days.

Where can I watch Big Brother?

Big Brother airs on CBS and is available to stream on Paramount+.