How many pieces does the LEGO Flatiron Building (21023-1) have?

The LEGO Flatiron Building set (21023-1) contains 471 pieces. It was released in 2015 as part of the LEGO Architecture theme.

How can I find missing parts for LEGO set 21023-1?

On BrickMissing you can check which parts from the LEGO Flatiron Building (21023-1) you already own. Add your LEGO collection and we'll show exactly which of the 471 pieces you're missing and which you already have.

Can I build the LEGO Flatiron Building 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 471 parts to show your buildability percentage and which specific pieces you still need.

What theme is the LEGO Flatiron Building from?

The LEGO Flatiron Building (21023-1) belongs to the LEGO Architecture theme. You can browse all Architecture sets on BrickMissing to find more sets from this theme.

Flatiron Building

21023-1 Architecture 2015 471 parts 1.9% repair risk Easy

Recreate the iconic Flatiron Building, New York’s most striking early skyscraper, with LEGO bricks. This detailed model (21023-1) captures the historic landmark that rises from a unique triangular plot between Broadway, Fifth Avenue, and East 22nd Street. Originally known as the ‘Fuller Building’, it reached 20 stories upon its 1902 completion, with an extra story added later by a penthouse. The building's distinctive limestone façade and elegant Beaux-Arts styling, a masterpiece by architect Daniel Burnham, are faithfully rendered. A recognized National Historic Landmark, its local nickname, 'Flatiron Building', was officially adopted, cementing its place in architectural history.

21023-1

3D build progress

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Parts Inventory

🧱 471 parts

Part	Color	Qty	LEGO price each
Bracket 1 x 2 - 1 x 4 [Rounded Corners] 10201	Light Bluish Gray	12×	Check price → View
Brick Special 1 x 2 with 2 Studs on 1 Side 11211	Tan	4×	€0,13 View at LEGO → View
Slope Curved 2 x 1 No Studs [1/2 Bow] 11477	Tan	12×	€0,06 View at LEGO → View
Slope Curved 2 x 1 No Studs [1/2 Bow] 11477	Dark Tan	16×	€0,06 View at LEGO → View
Slope Curved 2 x 2 x 2/3 15068	Tan	20×	€0,13 View at LEGO → View
Brick 2 x 2 Corner 2357	Tan	8×	€0,16 View at LEGO → View
Tile Special 1 x 2 Grille with Bottom Groove 2412b	Tan	45×	€0,06 View at LEGO → View
Brick 1 x 2 3004	Tan	18×	€0,11 View at LEGO → View
Brick 1 x 2 3004	Light Bluish Gray	1×	€0,11 View at LEGO → View
Brick 1 x 1 3005	Tan	5×	€0,07 View at LEGO → View
Brick 1 x 1 3005	Light Bluish Gray	5×	€0,07 View at LEGO → View
Brick 1 x 6 3009	Tan	4×	€0,25 View at LEGO → View