How many pieces does the LEGO Building Systems (40505-1) have?

The LEGO Building Systems set (40505-1) contains 1211 pieces. It was released in 2024 as part of the LEGO LEGO Exclusive theme.

How can I find missing parts for LEGO set 40505-1?

On BrickMissing you can check which parts from the LEGO Building Systems (40505-1) you already own. Add your LEGO collection and we'll show exactly which of the 1211 pieces you're missing and which you already have.

Can I build the LEGO Building Systems with parts I already have?

Use BrickMissing's free parts checker to find out. Add LEGO sets you own to your collection and we'll cross-reference all 1211 parts to show your buildability percentage and which specific pieces you still need.

What theme is the LEGO Building Systems from?

The LEGO Building Systems (40505-1) belongs to the LEGO LEGO Exclusive theme. You can browse all LEGO Exclusive sets on BrickMissing to find more sets from this theme.

Building Systems

40505-1 LEGO Exclusive 2024 1211 parts 0.7% repair risk Advanced

The LEGO Exclusive Building Systems 40505-1 set, comprising 1211 pieces, offers a detailed retrospective on LEGO's foundational construction methods. It features three distinct mini-scale models, each echoing a classic from the core building systems. Prominent among these is a representation of the 1955 Town Plan, a pivotal early LEGO System in Play product. The set also includes a mini-scale DUPLO Train, drawing inspiration from the 1980s sets 2700 and 2705. A highlight is the Technic mini-scale model, based on the flagship 853, which showcases a functioning steering system and visible moving pistons within its motor assembly. Behind a cleverly integrated wall, discover 19 nano-builds depicting milestone LEGO models, with space left for a personal favorite. This historical display piece measures approximately 38 cm in width, making it a significant addition to any collection of toy memorabilia.

Parts Inventory

🧱 1211 parts

Part	Color	Qty	LEGO price each
Plate 3 x 3 11212	Dark Bluish Gray	16×	€0,12 View at LEGO → View
Sports Roller Skate 11253	Black	2×	€0,15 View at LEGO → View
Sports Roller Skate 11253	Black	3×	€0,15 View at LEGO → View
Sports Roller Skate 11253	Flat Silver	11×	Check price → View
Sports Roller Skate 11253	Red	3×	€0,15 View at LEGO → View
Tile 2 x 2 Corner 14719	Black	1×	€0,06 View at LEGO → View
Tile 2 x 2 Corner 14719	Dark Bluish Gray	1×	€0,06 View at LEGO → View
Slope 45° 2 x 1 Triple with Inside Stud Holder 15571	Black	1×	€0,10 View at LEGO → View
Plate Special 1 x 2 with 1 Stud with Groove and Inside Stud Holder (Jumper) 15573	Black	3×	€0,06 View at LEGO → View
Plate Special 1 x 2 with 1 Stud with Groove and Inside Stud Holder (Jumper) 15573	Dark Bluish Gray	13×	€0,06 View at LEGO → View
Plate Special 1 x 2 with 1 Stud with Groove and Inside Stud Holder (Jumper) 15573	Light Bluish Gray	14×	€0,06 View at LEGO → View
Plate Special 1 x 2 with 1 Stud with Groove and Inside Stud Holder (Jumper) 15573	White	2×	€0,06 View at LEGO → View