Have you ever watched The Big Bang Theory and thought, “I wonder if that apartment building is real?” You’re not alone.
I used to pause episodes, trying to figure out where they actually filmed Sheldon and Leonard’s favorite spots.
The Big Bang Theory became one of TV’s biggest sitcoms, running for 12 seasons and winning over millions of fans worldwide.
Here’s what I found out: most scenes happened on studio sets in Los Angeles. But the show also used real spots around Pasadena and Southern California to bring the story to life.
Let me walk you through both the studio locations and the actual places you might recognize from the show.
Was The Big Bang Theory Filmed in a Real Apartment Building?
No, the apartment you see in every episode isn’t real. The interior scenes with Sheldon and Leonard’s couch, Penny’s door across the hall, and that broken elevator were all filmed on a soundstage.
The production team built these sets from scratch at Warner Bros. Studios in Burbank, California.
This gave them complete control over lighting, camera angles, and sound quality. They could film multiple scenes in one day without moving the crew around town.
The apartment building exterior you sometimes see is based on a real location. But the inside? Pure Hollywood magic on a controlled set.
Main Filming Location: Warner Bros. Studios, Burbank
Warner Bros. Studios in Burbank served as the primary filming home for The Big Bang Theory throughout its entire 12-season run.
Stage 25 – The Heart of the Show

Stage 25 at Warner Bros. Studios was where the magic happened. This soundstage hosted every major indoor scene throughout all 12 seasons.
Here’s what the crew built inside Stage 25:
- Sheldon and Leonard’s apartment
- Penny’s apartment
- The hallway and broken elevator
- The Cheesecake Factory interior
- Caltech university offices and labs
- Stuart’s comic book store
Everything stayed in one place, making filming quick and efficient.
Warner Bros. Backlot – Exterior Filming

When the show needed outdoor shots, they used the Warner Bros. backlot. The crew filmed exterior scenes on an area called New York Street.
Why stay on the backlot? It saved time and money. The team could control weather, lighting, and crowds without dealing with real traffic or curious fans.
Warner Bros. Studio Tour

You can visit Warner Bros. Studios today and see where it all happened.
The studio tour lets you walk through Stage 25 and check out the actual sets. You’ll see props like Sheldon’s spot on the couch, costumes, and behind-the-scenes displays.
It’s a fun way to step into the show’s world.
Pasadena, California: The Show’s Real-Life Backdrop

While the interior scenes happened on soundstages, Pasadena provided the real locations that made the show feel grounded in Southern California.
Caltech – The Characters’ Workplace
The California Institute of Technology (Caltech) appears throughout the series in exterior shots. You’ll see the campus buildings during scene transitions and cutaways when the characters head to work.
The show’s creators picked Caltech because it’s one of the world’s top science and research universities. It made sense for brilliant physicists like Sheldon and Leonard to work there.
The Athenaeum (Caltech Faculty Club)
This historic faculty club at Caltech shows up in several exterior shots.
The building’s classic architecture added a scholarly feel to the show’s visual style and connected perfectly with the academic setting.
Old Town Pasadena
The streets of Old Town Pasadena appear in various establishing shots throughout the series.
These charming downtown areas helped create the show’s overall look and gave viewers a sense of where the characters lived and spent their time.
Pasadena City Hall
This landmark building pops up in scenic cutaways between scenes.
Pasadena City Hall is a popular filming location for many TV shows and movies because of its recognizable design.
Colorado Street Bridge
This iconic Pasadena bridge appears in transition shots throughout the series.
The historic landmark helped establish the Southern California setting and added visual interest between scenes.
Other Southern California Filming Spots
Beyond Pasadena and Burbank, The Big Bang Theory used various Southern California locations to bring authenticity to the characters’ lives and adventures.
Santa Monica & Westside Locations
The show references Santa Monica and other Westside areas when the characters go on dates or hang out.
While most of these scenes were filmed on sets at the studio, the locations helped ground the story in real Los Angeles geography.
Fans who live in Southern California could relate to the places mentioned, making the show feel more realistic and connected to actual LA life.
Los Angeles Landmarks Used for Establishing Shots
The crew filmed general LA skyline scenes to show the broader city setting throughout the series. They also captured shots at popular filming streets and intersections around Los Angeles.
These quick cuts between scenes helped remind viewers that the characters lived in Southern California.
The familiar landmarks and cityscapes added visual variety and kept the show rooted in its real-world location, even though most filming happened inside the studio.
Final Thoughts
After years of watching The Big Bang Theory, it’s cool to know where it all actually happened. The show became a cultural phenomenon that still has fans rewatching episodes today.
What made it work so well was the smart mix of studio sets and real Pasadena locations. The controlled soundstage gave us those perfect comedic moments, while the actual Southern California spots made everything feel real and relatable.
If you’re ever in the LA area, visiting Warner Bros. Studios or walking around Pasadena hits different when you recognize the places from the show. It’s like stepping into Sheldon and Leonard’s world for real.
Frequently Asked Questions
Was The Big Bang Theory filmed in front of a live audience?
Yes, the show was filmed in front of a live studio audience at Warner Bros. Studios. The crew recorded most episodes on Stage 25 with real people watching and laughing along.
Can you visit The Big Bang Theory apartment building in real life?
No, the apartment interior was a set built on a soundstage and doesn’t exist as a real building. However, you can see the sets during the Warner Bros. Studio Tour in Burbank.
Is the Cheesecake Factory from the show a real location?
The Cheesecake Factory interior scenes were filmed on a set at Warner Bros. Studios. While the restaurant chain is real with many locations, the specific one shown in the series was created for the show.
Did they actually film at Caltech?
The production team filmed exterior establishing shots at the real Caltech campus in Pasadena. However, all interior office and lab scenes were created on soundstages at the studio.
How long did it take to film each episode of The Big Bang Theory?
Most episodes took about five hours to film in front of the live audience. The cast and crew typically filmed on Tuesday evenings after several days of rehearsals and script revisions.