Building the complete LEGO® Harry Potter™ Hogwarts Castle can get confusing—especially as more Hogwarts sets are released. Which sets connect? Which ones belong to the current modular system? And do you actually need every set?
This guide breaks down the current LEGO Hogwarts modular Castle system, including the individual sets that combine to create the larger Hogwarts display. Whether you're starting with Hogwarts Castle: The Great Hall (76435) or trying to figure out which section to add next, you'll find the compatible sets and how they fit into the larger castle below.
Last updated: September 2026
This guide focuses on the current modular Hogwarts Castle system introduced in 2024 and expanded through 2026. It does not include every LEGO Harry Potter Hogwarts set ever released.
Complete LEGO Hogwarts Modular Castle Set List
The current Hogwarts system uses multiple LEGO Harry Potter sets to create different areas of the castle and grounds. Some are major structural sections, while smaller sets provide classrooms, interiors, and surrounding locations that integrate into the larger display.
| Set # | LEGO Hogwarts Set | Year | Type |
|---|---|---|---|
| 76426 | Hogwarts Castle: Boathouse | 2024 | Castle grounds |
| 76430 | Hogwarts Castle: Owlery | 2024 | Castle grounds |
| 76431 | Hogwarts Castle: Potions Class | 2024 | Interior/classroom |
| 76435 | Hogwarts Castle: The Great Hall | 2024 | Major castle section |
| 76441 | Hogwarts Castle: Dueling Club | 2025 | Interior/play module |
| 76442 | Hogwarts Castle: Charms Class | 2025 | Interior/classroom |
| 76445 | Hogwarts Castle: Herbology Class | 2025 | Classroom/greenhouse |
| 76447 | Hogwarts Castle: Flying Lessons | 2025 | Castle section/classrooms |
| 76454 | Hogwarts Castle: The Main Tower | 2025 | Major castle section |
| 76460 | Hogwarts Castle: Sorting Hat Ceremony | 2026 | Great Hall interior module |
| 76463 | Hogwarts Castle: Hospital Wing | 2026 | Castle section/interiors |
| 76473 | Hogwarts Castle: East Wing | 2026 | Major castle section |
Important: These sets are part of the current LEGO® Harry Potter™ modular Hogwarts Castle system. They should not be confused with older Hogwarts systems or standalone models such as LEGO Hogwarts Castle (71043), which is a separate microscale display model.
The current LEGO Harry Potter modular Hogwarts collection combines castle sections, classrooms and surrounding locations into a larger display.
How the LEGO Hogwarts Modular Castle System Works
Unlike a single LEGO Hogwarts Castle set, the current modular Hogwarts system is designed to grow over time. Larger sets form the major sections of the castle, while smaller sets add classrooms, interior spaces, and locations around the Hogwarts grounds.
Hogwarts Castle: The Great Hall (76435) serves as one of the central building blocks of the system. Other sections can be arranged around the larger castle display, while smaller classroom modules can be incorporated into designated interior spaces. This allows builders to expand their version of Hogwarts gradually instead of purchasing one enormous set at once.
LEGO has continued expanding this system since its introduction in 2024, adding major sections such as Hogwarts Castle: The Main Tower (76454) in 2025 and Hogwarts Castle: East Wing (76473) in 2026. As additional sections are released, the combined display continues to grow.
One important thing to know is that not every set connects in exactly the same way. Some sets form the castle itself, some represent locations on the surrounding grounds, and others are smaller interior modules designed to fit within larger Hogwarts sections.
Which LEGO Hogwarts Sets Form the Castle?
The larger structural sets are the foundation of the current modular Hogwarts display. Rather than representing individual classrooms or locations around the grounds, these sets create substantial sections of Hogwarts itself.
Hogwarts Castle: The Great Hall (76435) — Released in 2024, the Great Hall is one of the key foundations of the current Hogwarts system. The 1,732-piece set includes the Great Hall, courtyard, dungeon and several removable interior rooms. LEGO designed it to connect with other sets in the current Hogwarts collection.
Hogwarts Castle: The Main Tower (76454) — Released in 2025, the 2,135-piece Main Tower adds one of Hogwarts' most recognizable sections. It includes locations such as the moving Grand Staircase, Dumbledore's office, the Defence Against the Dark Arts classroom and the Chamber of Keys. It is designed to connect with other sets in the modular Hogwarts system.
Hogwarts Castle: Hospital Wing (76463) — Released in 2026, the Hospital Wing expands the castle with another 907 pieces and includes the hospital wing itself along with additional recognizable Hogwarts spaces. It is designed to connect with other sets in the current modular collection.
Hogwarts Castle: East Wing (76473) — The 2,164-piece East Wing arrived in 2026 and adds another major portion of the castle, including the viaduct and bridge. LEGO specifically describes these sections as connecting with other modular Hogwarts sets to expand the larger castle scene.
Together, these larger sets create much of the physical castle structure. The smaller Hogwarts sets serve a different purpose: they add classrooms, interior modules and surrounding locations that make the completed display more detailed.
Hogwarts Classrooms and Interior Modules
Not every set in the modular Hogwarts collection adds another large exterior section to the castle. Some sets focus on individual classrooms and interior spaces, allowing builders to add more recognizable locations from Hogwarts without requiring another large castle build.
Hogwarts Castle: Potions Class (76431) — This 397-piece classroom set recreates Professor Snape's dungeon Potions classroom. The build opens for access and includes details such as a blackboard, potion ingredients and a cauldron, along with minifigures of Severus Snape, Hermione Granger, Pansy Parkinson and Seamus Finnigan. LEGO identifies the set as part of the modular collection designed to connect into the larger Hogwarts Castle scene.
Hogwarts Castle: Charms Class (76442) — This 204-piece classroom recreates the Charms lesson from Harry Potter and the Sorcerer's Stone™. The classroom folds open and includes detachable desks, a chalkboard and a Wingardium Leviosa feather feature. It includes Ron Weasley, Hermione Granger and Professor Flitwick minifigures and is also part of LEGO's current modular Hogwarts collection.
Hogwarts Castle: Dueling Club (76441) — This 158-piece set recreates the Dueling Club scene from Harry Potter and the Chamber of Secrets™. The build features a battle platform with a minifigure-toppling function and includes Harry Potter, Draco Malfoy, Gilderoy Lockhart and Severus Snape. LEGO identifies the set as part of the current modular Hogwarts Castle collection.
Hogwarts Castle: Herbology Class (76445) — This 390-piece set recreates the Hogwarts greenhouse and Herbology classroom. The greenhouse opens for play and includes removable tables, magical plants and Mandrakes, along with Neville Longbottom, Hermione Granger and Professor Sprout. LEGO identifies the set as part of the modular Hogwarts collection.
Hogwarts Castle: Sorting Hat Ceremony (76460) — Released in 2026 for LEGO Harry Potter's 25th anniversary, this 124-piece set recreates the Sorting Ceremony with Professor McGonagall, Harry Potter, Hermione Granger and Draco Malfoy. Most importantly for builders of the complete castle, LEGO specifically states that this set fits inside Hogwarts Castle: The Great Hall (76435).
These smaller classroom sets are useful for builders who want a more complete Hogwarts interior without adding another large exterior section. They also make the modular system more flexible, since the finished castle is designed around more than just its exterior appearance.
Hogwarts Grounds and Additional Castle Sections
The modular Hogwarts system extends beyond the main castle towers and classrooms. Several sets recreate locations around the Hogwarts grounds or add smaller castle sections, helping connect the individual areas into a more complete Hogwarts display.
Hogwarts Castle: Boathouse (76426) — This 350-piece set recreates the arrival point where Harry Potter and the other first-year students travel across the Black Lake to Hogwarts. The build includes the castle boathouse, two boats and seven LEGO Harry Potter characters. LEGO identifies the Boathouse as part of the modular series designed to connect into the larger Hogwarts Castle scene.
Hogwarts Castle: Owlery (76430) — The 364-piece Owlery adds the tower where Hogwarts keeps its owls. The set includes Harry Potter, Cho Chang and Argus Filch minifigures, along with five owl figures. Like the Boathouse, LEGO identifies the Owlery as part of the modular Hogwarts series.
Hogwarts Castle: Flying Lessons (76447) — This 651-piece set adds a larger section of Hogwarts containing the Quidditch equipment room, Transfiguration classroom, Professor McGonagall's office and trophy room. The building can fold open, while some rooms can be pulled out for easier access. LEGO identifies Flying Lessons as part of the modular collection that connects into the larger Hogwarts Castle scene.
Together, these sets help fill out the areas beyond Hogwarts' largest towers. Builders can therefore approach the collection in stages—starting with a major castle section and gradually adding classrooms, connecting sections and locations around the grounds.
Selected LEGO Harry Potter Hogwarts sets available from Bricks by Ojany.
Which LEGO Sets Do You Need to Build the Complete Hogwarts Castle?
If your goal is to build the most complete version of the current LEGO® Harry Potter™ modular Hogwarts Castle, you'll want to collect the major castle sections, interior classroom modules and surrounding Hogwarts locations released as part of this system.
Based on the current collection covered in this guide, that includes:
76426 — Hogwarts Castle: Boathouse
76430 — Hogwarts Castle: Owlery
76431 — Hogwarts Castle: Potions Class
76435 — Hogwarts Castle: The Great Hall
76441 — Hogwarts Castle: Dueling Club
76442 — Hogwarts Castle: Charms Class
76445 — Hogwarts Castle: Herbology Class
76447 — Hogwarts Castle: Flying Lessons
76454 — Hogwarts Castle: The Main Tower
76460 — Hogwarts Castle: Sorting Hat Ceremony
76463 — Hogwarts Castle: Hospital Wing
76473 — Hogwarts Castle: East Wing
You don't necessarily need to purchase every set at once. The modular design allows you to start with one of the larger castle sections and expand your Hogwarts display over time as you add additional buildings, classrooms and locations.
For someone starting the collection, Hogwarts Castle: The Great Hall (76435) is a natural foundation because it provides a substantial section of Hogwarts and is designed specifically around expansion with other sets in the system. From there, larger additions such as the Main Tower and East Wing can significantly expand the castle, while the smaller sets add classrooms and recognizable locations throughout the grounds.
Shop LEGO Harry Potter Sets for Your Hogwarts Collection
Looking for another piece of your Hogwarts Castle? Bricks by Ojany carries authentic LEGO® Harry Potter™ sets, including selections from the modular Hogwarts collection. Inventory can change as sets sell out, retire or become available, so check our current selection to see which Hogwarts sets are available.
Frequently Asked Questions About the LEGO Modular Hogwarts Castle
Do all LEGO Hogwarts sets connect together?
No. LEGO has released many different versions of Hogwarts over the years, and they are not all part of the same modular system. The sets covered in this guide belong to the current Hogwarts Castle collection introduced in 2024 and expanded in subsequent years. Older Hogwarts sets and standalone models may use different designs, scales and connection systems.
What LEGO Hogwarts set should I start with?
Hogwarts Castle: The Great Hall (76435) is a strong starting point for the current modular system. It provides a substantial portion of the castle and was designed to integrate with additional Hogwarts sets as the collection expands. However, because the system is modular, you can also begin with a smaller set and build your collection gradually.
Is the current modular Hogwarts Castle minifigure scale?
The current Hogwarts system is designed around LEGO minifigures and includes minifigure-scale rooms, classrooms and recognizable locations throughout the castle. However, like many LEGO playsets, the overall castle is compressed compared with the proportions of Hogwarts as depicted in the Harry Potter films.
Can older LEGO Hogwarts sets connect to this system?
Older LEGO Hogwarts sets are not officially part of the current modular Hogwarts Castle system. While creative builders may find ways to combine or modify older sets using their own LEGO pieces, they were not necessarily designed to integrate directly with the current 2024–2026 collection.
Do I need every modular Hogwarts set?
No. One of the advantages of the modular system is that you can expand it gradually. The larger sets create substantial portions of Hogwarts, while smaller sets add classrooms, interiors and locations around the grounds. Collecting every compatible set creates a more complete display, but individual modules can still be enjoyed on their own.
Will LEGO release more modular Hogwarts Castle sets?
LEGO has continued expanding the current Hogwarts Castle system since its introduction in 2024, with additional sections released through 2026. Future additions may continue to expand the castle, but new sets should only be considered part of the system once LEGO officially announces them. This guide will be updated as additional compatible Hogwarts sets are released.
Build Your Hogwarts Collection with Bricks by Ojany
Building the complete LEGO® Hogwarts Castle doesn't have to happen all at once. Whether you're starting with the Great Hall, adding another classroom or searching for a harder-to-find Harry Potter set, you can expand your collection one section at a time.
Browse the current LEGO® Harry Potter™ selection at Bricks by Ojany to see which Hogwarts sets are currently available. Bricks by Ojany is an authorized LEGO® reseller, offering authentic LEGO products alongside a growing selection for builders and collectors. Shop LEGO Harry Potter Sets →
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