New Details on LEGO’s Biggest Harry Potter Set of 2026 Leak Online

A well-known leaker has shared some key details about LEGO set 76473, which is expected to be the toymaker’s largest Harry Potter-themed model of 2026. These unofficial insights into the yet-to-be-formally-announced LEGO kit arrive roughly six months ahead of its expected release.

LEGO has consistently been releasing Harry Potter sets since the movie adaptation of the first Wizarding World book graced the silver screens in November 2021. It most recently did so in January 2026, when it launched nine such offerings, ranging from the modest $4.99 polybag of Dumbledore’s Office to 76466 Philosopher’s Stone – Collector’s Edition, a detailed $159.99 set with a poseable Hedwig figure, secret compartment, and three minifigs, among other elements. Even more such products are likely to follow in the near future, as several credible leakers have been reporting about a large summer 2026 wave of LEGO Harry Potter sets since late last year.

LEGO’s Hogwarts Castle: East Wing Reportedly Includes a Viaduct Bridge and Chamber of Secrets

Set 76473 is widely rumored to be the flagship of the upcoming lineup. The number is said to correspond to a kit titled “Hogwarts Castle: East Wing,” comprising 2,164 pieces, making it the largest LEGO Harry Potter set of 2026 by a notable margin. LEGO leaker UniBricks recently shared additional details about the upcoming product, describing the model as depicting the eastern section of Hogwarts Castle along with the Viaduct Bridge that connects it to the courtyard. While the courtyard itself is not expected to be included, the kit is also rumored to feature a small replica of the Chamber of Secrets, complete with a new Basilisk figure—the first since the 76389 Chamber of Secrets set, which was retired in late 2024 after a three-and-a-half-year production run. Bloody Baron is also said to be included, presumably in the form of a minifigure. Either way, set 76473 is expected to mark the character’s LEGO debut.

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Drag weapons to fill the grid

EasyMediumHardStart

Loadout Logic

Tap on a weapon to rotate it or press R while dragging.

Time—

Filled0/36

NewFinish

The rumored viaduct bridge is the detail most likely to matter to collectors given the play-scale size of both the rumored East Wing replica and other recent Hogwarts LEGO sets. Bridges and connector sections can impact how neatly modular builds fit together for display, a factor that many buyers of large, multi-thousand-piece sets take into account.

While previous leaks haven’t offered a more concrete launch window than “summer,” LEGO’s seasonal product refresh cycles suggest that its new Hogwarts module may hit the store shelves on August 1. At least six other Harry Potter-themed LEGO sets are rumored to be launching alongside it, having already been detailed in several prior insider reports. 76473 Hogwarts Castle: East Wing will reportedly retail for $249.99.

All Harry Potter LEGO Sets Announced, Released, or Rumored for 2026

While the Wizarding World of Harry Potter has been an evergreen LEGO theme for a quarter of a century, this upcoming product wave is set to arrive at the time the franchise is seeking renewed relevancy. Central to these efforts is the live-action Harry Potter television show envisioned as a comprehensive remake of the popular film saga. Produced by HBO, the Harry Potter TV reboot is currently targeting an early 2027 release. Based on LEGO’s historical product release patterns, there is a reasonable chance the Danish toymaker debuts a wide variety of new sets closer to the show’s premiere.