How many pieces does the LEGO LEGO Design Seminar Set 2025 (40231-1) have?

The LEGO LEGO Design Seminar Set 2025 set (40231-1) contains 175 pieces. It was released in 2025 as part of the LEGO LEGO Exclusive theme.

How can I find missing parts for LEGO set 40231-1?

On BrickMissing you can check which parts from the LEGO LEGO Design Seminar Set 2025 (40231-1) you already own. Add your LEGO collection and we'll show exactly which of the 175 pieces you're missing and which you already have.

Can I build the LEGO LEGO Design Seminar Set 2025 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 175 parts to show your buildability percentage and which specific pieces you still need.

What theme is the LEGO LEGO Design Seminar Set 2025 from?

The LEGO LEGO Design Seminar Set 2025 (40231-1) belongs to the LEGO LEGO Exclusive theme. You can browse all LEGO Exclusive sets on BrickMissing to find more sets from this theme.

LEGO Design Seminar Set 2025

40231-1 LEGO Exclusive 2025 175 parts 10.2% repair risk Easy

LEGO Design Seminar Set 2025 (40231-1) is a LEGO LEGO Exclusive from 2025. The set contains 175 parts across 12 part and colour combinations in 5 colours — the full inventory below shows exactly which pieces you need to build or complete it.

Parts Inventory

🧱 175 parts

Part	Color	Qty	LEGO price each
Slope Curved 2 x 1 No Studs [1/2 Bow] 11477	Black	4×	€0,06 View at LEGO → View
Slope Curved 2 x 1 No Studs [1/2 Bow] 11477	Dark Azure	4×	€0,06 View at LEGO → View
Plate Special 1 x 2 with 1 Stud with Groove and Inside Stud Holder (Jumper) 15573	Black	2×	€0,06 View at LEGO → View
Wedge Plate 4 Stud 45° Angle Plate 15706	Black	8×	€0,22 View at LEGO → View
Slope 45° 2 x 1 Inverted with 2/3 Cutout 2310	Black	7×	€0,16 View at LEGO → View
Wedge Plate 2 x 2 Left 24299	Dark Azure	8×	€0,10 View at LEGO → View
Wedge Plate 2 x 2 Left 24299	Black	7×	€0,10 View at LEGO → View
Tile 1 x 4 with Groove 2431	Black	1×	€0,12 View at LEGO → View
Plant, Fern 2 x 3 x 2 2682	Opal Trans-Dark Pink	1×	€0,19 View at LEGO → View
Slope Curved 2 x 1 with Stud Notch Left 29120	Black	4×	€0,07 View at LEGO → View
Slope Curved 2 x 1 with Stud Notch Left 29120	Dark Azure	4×	€0,07 View at LEGO → View
Brick 2 x 2 3003	Red	1×	€0,13 View at LEGO → View

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Repairability

Can you fix LEGO Design Seminar Set 2025 if a piece goes missing?

10.2%Moderate repair risk

easy to fixguard this box

6 of the 59 part+color combinations in this set appear in 3 or fewer sets ever made. Lose one of those and a replacement is very hard to find.

Theme average

3.4%

All sets

6.7%

Hardest to replace

Minifig Head · Medium Lavender · only this setTorso, White 'LEGO DESIGN' print, Dark P… · Dark Purple · only this setTorso Shirt, Patch Pocket Print, Red Arm… · Red · only this set

How we calculate this →