When Does Big Brother Season 27 Premiere?
Mark your calendars: Big Brother Season 27 premieres Thursday, July 10, 2025, at 8:00 PM ET/PT with a supersized 90-minute episode on CBS. This premiere date is notably earlier than recent seasons – a full week ahead of Big Brother 26 and three weeks earlier than Big Brother 25's delayed start.
The premiere festivities don't stop there. Following the Thursday kickoff, viewers will get another 90-minute episode on Sunday, July 13, before the show settles into its regular schedule.
Complete Big Brother 27 Schedule
- Premiere: Thursday, July 10 (90 minutes)
- Regular Episodes: Sundays (60 minutes), Wednesdays (90 minutes), Thursdays (60 minutes)
- Big Brother: Unlocked: Every other Friday starting July 25 (60 minutes)
- Time Slot: 8:00 PM ET/PT for all episodes
Big Brother 27 Cast: What We Know So Far
As of late June 2025, the official Big Brother Season 27 cast has not been announced. However, reliable sources indicate that the houseguests have already entered sequester this past weekend, following the traditional timeline that gives contestants about two weeks of isolation before entering the iconic house.
Cast Reveal Timeline
Based on previous seasons' patterns, fans can expect:
- House design reveal: First week of July
- Official cast announcement: Mid-July, likely around July 15
- Cast bios and photos: Days before the July 10 premiere
Game-Changing New Features Coming to Big Brother 27
Perhaps the most exciting addition to Big Brother 27 is the launch of "Big Brother: Unlocked," a revolutionary companion series that will transform how fans experience the game.
What is Big Brother: Unlocked?
- Airs every other Friday at 8:00 PM starting July 25
- Features three Big Brother alumni as hosts (names TBA)
- Runs through September 26
- One-hour episodes packed with exclusive content
What to Expect?
- Never-before-seen broadcast footage from the house
- Exclusive interviews with current and former houseguests
- Surprise guest appearances
- Behind-the-scenes access typically reserved for production
- Expert gameplay analysis from former contestants
- Insider perspectives on strategy and house dynamics
Extended Episode Formats
Big Brother 27 is delivering more content per week than any season in recent memory:
- Wednesday episodes expand to 90 minutes for the entire season
- Premiere week features two 90-minute episodes
- Sunday and Thursday episodes remain 60 minutes after premiere week
- Total weekly runtime: 4.5 hours of Big Brother content
This expanded format allows for deeper strategy discussions, more diary room confessionals, and enhanced storytelling that fans have been requesting for years.
Big Brother 27 Theme Speculation: Secrets and Spies
While CBS hasn't officially revealed the Season 27 theme, promotional materials and fan theories point toward an intriguing direction:
Spy/Secret Agent Theme Evidence
- Promotional content features "top secret" messaging and whispers
- CBS teased: "Well, we've got eyes everywhere, and trust us: Our intel is solid"
- Host Julie Chen Moonves photographed with a wall of golden keys
- References to surveillance and intelligence gathering
Twin Twist Return?
Fan speculation suggests the return of the beloved Twin Twist, where identical twins play as one houseguest before both entering the game separately. Evidence includes:
- Subtle "twinning" references in promotional material
- Past twin houseguest Liz Nolan mentions by Julie Chen Moonves
- CBS's track record of bringing back popular twists for anniversary seasons
What's Returning to Big Brother 27
Familiar Elements
- Julie Chen Moonves returns as host for her 25th season
- $750,000 grand prize (increased from $500,000 in recent seasons)
- $50,000 America's Favorite Houseguest award
- Traditional competition format with HOH, nominations, and Power of Veto
- Live eviction ceremonies every Thursday
Potential Twist Returns
Producers have hinted that the "essence" of Big Brother 26's AI Arena twist may return in some form, though specific details remain under wraps. The AI Arena was a fan-favorite addition that added an extra layer of strategy and safety competitions.
How to Watch Big Brother Season 27?
Live Television
- CBS: All episodes air live
- Local listings may vary by region
Streaming Options
- Paramount+ Premium: Live streaming as episodes air, plus next-day access
- Paramount+ Essential: Next-day on-demand access only
- Live Feeds: Available 24/7 on Paramount+ Premium and Pluto TV
International Viewers
Check your local CBS affiliate or Paramount+ availability in your region.
Disclaimer:
All information provided about Big Brother Season 27 is based on currently available sources, official announcements, and credible leaks as of June 2025. Details such as cast members, game twists, schedules, and format are subject to change at the discretion of CBS. This content is intended for informational and entertainment purposes only and is not affiliated with or endorsed by CBS or the producers of Big Brother. For the most accurate and up-to-date information, please refer to official CBS announcements and broadcasts.
