The big brother 27 premiere date is set for Thursday, July 10, 2025, at 8 p.m. ET on CBS, marking an early kickoff to the show’s 25th-anniversary season. This supersized launch week—featuring bonus episodes and fresh twists—is generating buzz among fans already intrigued by the “Hotel Mystère” theme and hidden surprises
Table of Contents
What to Expect in Premiere Week
CBS has planned a packed start:
- Thursday, July 10 (8–9:30 p.m. ET) – 90-minute Season 27 kickoff
- Sunday, July 13 (8–9:30 p.m. ET) – Another 90-minute episode to maintain momentum
- Regular schedule begins: Wednesdays (90 min), Thursdays & Sundays (60 min)
CBS is adding a brand-new companion show, Big Brother: Unlocked, airing every other Friday at 8 p.m. (starting July 25). Hosted by three former All‑Stars, it features unseen footage, guest interviews, and game analysis.
“Hotel Mystère” Theme & Twists
A Season Steeped in Mystery
Season 27 immerses viewers in a suspense-driven experience dubbed Hotel Mystère. The house includes a Reception area with 75 key boxes, a Victorian Conservatory, a Venom Lounge, hidden corridors, and even a Boxing Ring Gym
Premiere Twists
Expect excitement from minute one: a masked visitor, secret accomplice, three-nominee eviction format, and a hidden Mystery Houseguest whose identity is billed as “very polarizing”
Key Points Summary
| Highlight | Details |
|---|---|
| Premiere Date | July 10 2025, 8–9:30 p.m. ET on CBS |
| Extra Episodes | July 10 & 13 are supersized 90-minute episodes |
| Regular Airing | Wednesdays (90 min), Thursdays & Sundays (60 min) |
| New Companion Show | Big Brother: Unlocked every other Friday starting July 25 |
| Prize | $750,000 grand prize, same as last few seasons |
Cast & Host Lineup
Julie Chen Moonves returns as the seasoned host for her 25th season. The 16 new Houseguests include unique contenders—a dungeon master, aura painter, AI consultant, carpenter, and a professional bull rider—with a surprise 17th Houseguest to be revealed during the premiere
Why This Premiere Date Matters
- It’s the earliest Big Brother start since Season 24, jumping ahead a full week from Season 26 and three weeks from Season 25
- This shift marks intensified summer programming, with full weeks of suspense, strategy, and viewer engagement.
- “Unlocked” offers fans a deeper, insider experience beyond the main episodes.
How to Watch
- On TV: CBS, starting July 10 at 8 p.m. ET
- Streaming: Paramount+ (Premium plan for live feeds; Essential plan for next‑day access)
- Live Feeds: Available 24/7 on Paramount+ Premium and Pluto TV
Final Thoughts
With its July 10 premiere, extended season run, and mystery-themed twists, Big Brother 27 promises to be the most immersive summer yet. Secure your July 10–13 viewing spot, follow along with Unlocked episodes, and get ready for a season full of secrets, drama, and unexpected guests.
Stay tuned for the latest big brother 27 premiere date developments and real-time updates. What excites you most—hidden passageways, mystery Houseguest, or the new companion show? Share your thoughts in the comments!