The Truth About The Big Bang Theory Apartment Building

The CBS comedy “The Big Bang Theory” charmed viewers for 12 seasons. According to Forbes, which cites Nielsen numbers, about 18 million people watched the show’s finale from 2007 to 2019. Roommates Sheldon Cooper (Jim Parsons) and Leonard Hofstadter (Johnny Galecki), as well as their friends Howard Wolowitz (Simon Helberg) and Rajesh “Raj” Koothrappali, were featured in the series (Kunal Nayyar).

“The Big Bang Theory” completed its run as the number one sitcom on television, held for most of its eight-year existence. During that time, much of the show’s action took place in Sheldon and Leonard’s corner flat, 4A. The area became a meeting point for the four friends and individuals who entered their lives. In the Season 1 episode of “The Nerdvana Annihilation,” in which Leonard buys a full-size time machine as a movie prop, Howard dubs it “Nerdvana” (via The Big Bang Theory website).

The Big Bang Theory apartment’s exact address is debated.

According to, Apartment 4A in “The Big Bang Theory” is purportedly located in a residential complex on 2311 North Los Robles Ave. in Pasadena, California. According to the publication, fans believe the building was built after the real-life Brookmore Apartments. It has comparable traits, such as the elevator being always broken and the stairs circling the lift’s space. Physicists from the California Institute of Technology (see one of the school’s buildings above) and NASA’s Jet Propulsion Laboratory (where several of “Big Bang’s” characters work) live there.

The Big Bang Theory apartment is not the same as the Friends apartment.

While there are many parallels between “The Big Bang Theory” and “Friends” — they’re both about a group of friends; the plots carry the characters through life phases, from being single to having families; and much of the story takes place in their houses — the sets are vastly different. At the same time, the floor plans for the spaces both offer substantial living rooms and kitchens. Such as Monica’s (Courteney Cox) and Rachel’s (Jennifer Aniston) apartments. Which are ideal locations for the scenes to occur. “The Big Bang Theory” and its interiors also appear to be a little odd. According to Gadgets 360, their abode, for example, avoids right angles, making the space appear stretched and slightly off-kilter.

The secret meaning in The Big Bang Theory apartment 4A

“The Big Bang Theory” is noted for inserting thinly veiled references and is sometimes known as Easter eggs as an homage to people, places, and things through the clothing worn. The word choices in the dialogue or real name-dropping. That can be seen in several episodes. Sheldon, for example, frequently wears the number 73 on his T-shirts, indicating that it is his favorite.

But there’s a reason for it: actor Jim Parson was born in 1973. Sheldon, of course, likes the number because it’s unique; as he puts it, “The number 73 is the twenty-first prime number. In binary, 73 is a palindrome, 1001001, which backward is 1001001 ” (via Apartment 4A is also thought to be one of the Easter eggs. Display points out that “4A” sounds like “foray,” which refers to a surprise attack. It could also allude to June Foray, who played Rocky the Flying Squirrel in the classic Cartoon.

The Big Bang Theory set depicts its characters accurately.

The personalities and hobbies of the characters on “The Big Bang Theory” mirrored in their residences. “Being on those sets, seeing the detail and production design — it’s all authentic,” said Howard actor Simon Helberg to CNN. For example, Sheldon and Leonard’s apartment has filled with “Star Wars” memorabilia, “Lord of the Rings” toys, and many comic books. The show received a $10,000 sword from “Games of Thrones for one episode.”

“I have a special bond with [Sheldon’s] couch,” actor Jim Parsons said (Sheldon). Some of the props stay in the flat for a long time, while others only appear for a few episodes. Some items have storylines, such as Sheldon’s spot, which he must always sit in due to its optimal comfort. “We shoot a lot of sequences in that apartment set, and as an actor, one of the first things you figure out is where you’ll start a scene on the stage, and I almost always start on that couch. It’s the closest I’ll ever get to sitting in Archie Bunker’s chair.”

The secret of the stairs in The Big Bang Theory apartment

The winding staircase is a focal point of “The Big Bang Theory” apartment, and characters frequently transfer plot points up and down its three flights. While the elevator broke long before Kaley Cuoco (Penny) became a building resident.  In Season 3’s “The Staircase Implementation,” she learns of its fate when Leonard tells her how he met Sheldon. And what truly happened to the elevator (via TBS). Cuoco had asked how she wanted the show to end. When she appeared on “The Late Late Show with James Cordon” right before the series ended, Cuoco responded that she wished “the elevator to be fixed.  And that the stairwells had become increasingly tiresome as the series continued.

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