Highclere Castle already has a piece count doing the rounds, and it's a hefty one. Unconfirmed data floating through the LEGO® fan community puts LEGO® Ideas 21373 Downton Abbey at 4,711 pieces, priced at $350, with an October 1 release. Only the dollar figure has surfaced so far, so use 21353 The Botanical Garden as a yardstick. That set launched at $329.99, €329.99, £289.99 and A$499.99, which would put 21373 somewhere around €350, £310 and A$530. Nothing is official yet, no images have appeared, and Sebastian Veselka's original fan project came in at 2,750 pieces, so take every number with a pinch of salt.

The model that kicked it all off earned every one of those supporters. Veselka gave Highclere Castle three decorated floors, a grand entrance and hallway, five main rooms, six smaller ones, 15 minifigures and Pharaoh the dog. He worked more than 200 stone pieces into the facade to break up the monotony of the brickwork, and anyone who has ever tried to stop a big wall from looking like just a big wall knows the patience that takes. Five of the smaller rooms he deliberately left empty, an open invitation to furnish them however you like.

Veselka, better known as BRO3, hails from Moravia in the Czech Republic and grew up watching the series with his family. He submitted the project to LEGO® Ideas on March 14, 2024, after years of sketching it out, sailed past 10,000 supporters in August 2024, and then landed in the Ideas Parking Lot while the review board bought itself more time. The wait ended on October 30, 2025, when LEGO® announced the biggest batch of approvals in LEGO® Ideas history and Downton Abbey rolled out of the Parking Lot with the green light.