How many pieces does the LEGO Assembly Square (10255-1) have?

The LEGO Assembly Square set (10255-1) contains 4002 pieces. It was released in 2017 as part of the LEGO Modular Buildings theme.

How can I find missing parts for LEGO set 10255-1?

On BrickMissing you can check which parts from the LEGO Assembly Square (10255-1) you already own. Add your LEGO collection and we'll show exactly which of the 4002 pieces you're missing and which you already have.

Can I build the LEGO Assembly Square 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 4002 parts to show your buildability percentage and which specific pieces you still need.

What theme is the LEGO Assembly Square from?

The LEGO Assembly Square (10255-1) belongs to the LEGO Modular Buildings theme. You can browse all Modular Buildings sets on BrickMissing to find more sets from this theme.

Assembly Square

10255-1 Modular Buildings 2017 4002 parts 0.6% repair risk Expert

The LEGO Modular Buildings Assembly Square 10255-1 celebrates ten years of the iconic theme with a grand, 4002-piece structure. Its easy-to-remove sections reveal a bustling interior: a ground level featuring a bakery, florist’s shop, and a café with outdoor seating. The middle floor houses a music store, a photo studio, and a detailed dental office. Ascend to the upper level for a dance studio and an apartment, complete with access to a rooftop terrace and barbecue. The exterior boasts a finely detailed sidewalk with a fountain and streetlamps, an elaborate facade with three buildable shop signs, and a spired tower. Eight minifigures and a baby figure populate the scene, ready to integrate into an expanded Modular Building street alongside sets like 10243 Parisian Restaurant.

Parts Inventory

🧱 4002 parts

Part	Color	Qty	LEGO price each
Food Pretzel 10170	Medium Nougat	1×	€0,12 View at LEGO → View
Lamp Post 2 x 2 x 7 with 4 Base Flutes 11062	White	2×	€0,50 View at LEGO → View
Bar Holder with Clip 11090	Black	4×	€0,12 View at LEGO → View
Bar Holder with Clip 11090	Yellow	8×	€0,12 View at LEGO → View
Slope Curved 4 x 1 No Studs [Stud Holder with Symmetric Ridges] 11153	Light Bluish Gray	2×	€0,12 View at LEGO → View
Tile Special 2 x 2 Inverted 11203	Black	1×	€0,10 View at LEGO → View
Brick Special 1 x 2 with 2 Studs on 1 Side 11211	Tan	73×	€0,13 View at LEGO → View
Brick Special 1 x 2 with 2 Studs on 1 Side 11211	Black	2×	€0,13 View at LEGO → View
Plate 3 x 3 11212	Dark Bluish Gray	2×	€0,12 View at LEGO → View
Plate 3 x 3 11212	Light Bluish Gray	2×	€0,12 View at LEGO → View
Plate Round 6 x 6 with Hole 11213	Light Bluish Gray	3×	€0,41 View at LEGO → View
Technic Axle Pin 3L with Friction Ridges Lengthwise and 1L Axle 11214	Dark Bluish Gray	2×	€0,29 View at LEGO → View

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Repairability

Can you fix Assembly Square if a piece goes missing?

0.6%Low repair risk

easy to fixguard this box

4 of the 645 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

1.4%

All sets

6.7%

Hardest to replace

Glass for Window 1 x 4 x 3 - Opening · Trans-Clear · only this setMirror Front and White Paper Backing · White · 2 sets everTile 2 x 3 · Bright Light Blue · 2 sets ever

How we calculate this →