Flatiron Building

Flatiron Building (21023-1) is a set in the Architecture theme, released in 2015. It has 471 pieces.

Add to collection Add to wishlist

Number:21023-1
Released:May 2015
Pieces:471
Box size:19.1 × 26.2 × 6.1 cm
Box weight:470 g
Theme:Architecture

Box size and weight as measured by Brickset.

In numbers

LEGO planned to retire this set in December 2016.

Product details

Number: 21023-1
Name: Flatiron Building
Theme: Architecture
Released: May 2015
Launched: May 2015
Retired: December 2016 in the United States
Pieces: 471
RRP: ≈ 35.59 USD (49.99 CAD) (Canada)≈ 44.92 USD (39.99 EUR) (Germany)≈ 46.34 USD (179.99 PLN) (PL)≈ 46.89 USD (34.99 GBP) (United Kingdom)39.99 USD (United States)
Price per piece: ≈ 0.076 USD (0.106 CAD) (Canada)≈ 0.095 USD (0.085 EUR) (Germany)≈ 0.098 USD (0.382 PLN) (PL)≈ 0.100 USD (0.074 GBP) (United Kingdom)0.085 USD (United States)

≈ marks a price converted into this currency at the ECB reference rate of its own date — a reference indication, not a tradeable rate. The price as observed follows in brackets.

BrickLink market data

We hold no current BrickLink prices for this set right now. BrickLink's own price guide is one click away.

View the price guide on BrickLink

The term 'Bricklink' is a trademark of Bricklink, Inc. This application uses the Bricklink API but is not endorsed or certified by Bricklink, Inc.

Can I build this?

Check this set against the parts you already own.

We count your loose parts and the copies you own,
suggest the fewest copies to open,
and list what is still missing.

Pricing

Best price everPrices recorded, but no exchange rate yet to compare them.

Current best offerNo current offer we can compare.

Price history

There are not enough shop prices in this range to draw a chart yet.

Price statistics by condition

Nobody has sold this set recently.

Sources Data in Brief: 36

Latest price from each shop

Sorted: lowest price first

Advertising · contains affiliate links

Data in Brief Sealed · gross · sold 3/1/2023

0.00 PLN

Go to shop

Amazon.com BrickDb shows no Amazon prices. The link opens a search for this set on Amazon's own site.

Advertising

See the price at Amazon

Where these prices come from

On eBay

The cheapest eBay listings we saw in the last seven days. They are sellers' asking prices, so they are not in the shop price list or the best offer.

We have not seen a current eBay listing for this set.

Recommended retail price

What LEGO published as the recommended retail price, market by market, in that market's own currency. No market's price is ever derived from another's.

Canada ≈ 35.59 USD (49.99 CAD) unknown tax basis Available 5/2/2015 to 12/20/2016.Recorded by BrickDb since 10/2/2026

Germany ≈ 44.92 USD (39.99 EUR) gross Available 5/2/2015 to 12/27/2016.Recorded by BrickDb since 10/2/2026

PL ≈ 46.34 USD (179.99 PLN) gross No availability dates published.Recorded by BrickDb since 10/21/2026

United Kingdom ≈ 46.89 USD (34.99 GBP) gross Available 5/1/2015 to 12/26/2016.Recorded by BrickDb since 10/2/2026

United States 39.99 USD net Available 5/2/2015 to 12/20/2016.Recorded by BrickDb since 10/2/2026

≈ marks a price converted into this currency at the ECB reference rate of its own date — a reference indication, not a tradeable rate. The price as observed follows in brackets.

Display case for this set

A display case made to fit this set, sold by a partner shop. The price is the shop's own, including VAT; delivery is extra.

Flatiron Display Case for LEGO 21023 20.40 GBP grossplus 10.50 GBP deliverySold by iDisplayit · price read 10/7/2026

AdvertisingView at iDisplayit

Building instructions

All building instructions for this set on LEGO.com

Parts in this set

61 inventory lines

Catalogue image of the part Bracket 1 x 2 - 1 x 4 [Rounded Corners]

Bracket 1 x 2 - 1 x 4 [Rounded Corners] 10201· Light Bluish Gray

×12

Catalogue image of the part Brick Special 1 x 2 with 2 Studs on 1 Side

Brick Special 1 x 2 with 2 Studs on 1 Side 11211· Tan

×4

Catalogue image of the part Brick Curved 2 x 1 No Studs [1/2 Bow]

Brick Curved 2 x 1 No Studs [1/2 Bow] 11477· Tan

×12

Brick Curved 2 x 1 No Studs [1/2 Bow] 11477· Dark Tan

×16

Catalogue image of the part Brick Curved 2 x 2 x 2/3

Brick Curved 2 x 2 x 2/3 15068· Tan

×20

Catalogue image of the part Brick 2 x 2 Corner

Brick 2 x 2 Corner 2357· Tan

×8

Catalogue image of the part Tile Special 1 x 2 Grille with Bottom Groove

Tile Special 1 x 2 Grille with Bottom Groove 2412b· Tan

×45

Brick 1 x 2 3004· Tan

×18

Brick 1 x 2 3004· Light Bluish Gray

×1

Brick 1 x 1 3005· Tan

×5

Brick 1 x 1 3005· Light Bluish Gray

×5

Brick 1 x 6 3009· Tan

×4

Plate 1 x 2 3023· Tan

×21

Plate 1 x 2 3023· Dark Tan

×10

Plate 1 x 2 3023· Trans-Brown

×9

Plate 1 x 1 3024· Tan

×3