Set 21023

Flatiron Building

Name: LEGO 21023 Flatiron Building
SKU: 21023

Architecture · 2015 · 471 pieces

Retired Dec 2016

Retail price$39.99What LEGO charged

Worth now$120.00Typical sealed asking price · 31 listings

Recently sold$91.99Only 1 sale so far — too few to lean on

vs retail+200%Worth more than it cost

Proven performer

Up 200% on its $40 retail price since retiring. Pay under $66 to still make a margin reselling.

See listings on eBay

How much is LEGO 21023 Flatiron Building worth?

LEGO 21023 Flatiron Building is worth about $120.00 sealed right now, based on 31 live sealed listings on eBay. That's 200% above its $39.99 retail price. It came out in 2015 with 471 pieces. It was retired in Dec 2016. Over the last 79 days its typical asking price has fallen 9%, from $132.50 to $120.00. We last checked it 8 days ago.

Price history

Value history

Oct 16$12031 listings

Lowest: $120
Highest: $133
Change: -9%
Asking vs retail: +200%

25 observations · median asking · rechecked 8× daily

Should you buy it?

Retired 10 years ago and now 3.0× retail. The people who bought two are very happy.

If you bought it to resell

Sells sealed for$120

Marketplace fees · 15.25%−$18

Payment processing · 2.9% + $0.30−$4

Shipping · est. from 471 pieces−$13

Reaches you$85

Pay no more than$65

For a 30% return at your costs. Change them and every figure on the site follows.

What it actually sold for

Sealed

$92

1 sold in six months

Used

$57

3 sold in six months

Sellers are asking 30% more than buyers actually paid. The $120 figure above is a ceiling; this is the floor to negotiate toward.

Completed BrickLink transactions over the last six months. Real sales, not asking prices.

Worth more in pieces?

Parted out$53vsSealed$120

Sealed is worth 56% more. Not one to break.

Minifigures: —
Loose parts: 480 pieces

Minifigure prices are real completed BrickLink sales. The parts figure is an estimate — the set’s own inventory at the catalogue average, not each piece priced individually. Treat it as a guide, and remember parting out is hours of work and many small sales.

Set details

Set number: 21023
Theme: Architecture
Released: 2015
Status: Retired Dec 2016
Pieces: 471
Minifigures: —
Retail price: $39.99
Value per piece: $0.255
Price confidence: high · 31 listings
Last checked: 8 days ago

Where these numbers come from

check it yourself

eBay31 live listingsThe asking price here — the median of what sellers want right now, $120. Last checked Oct 16.See the listings →BrickLink1 completed salesWhat it actually sold for — $92 across six months of real transactions. Last checked Oct 24.Open the price guide →Catalogue471 piecesPiece counts, minifigures, release year and retail price come from Rebrickable and Brickset. Retail was $40.See the catalogue entry →

eBay links are affiliate links — if you buy after clicking, we earn a small commission at no cost to you, and that is what pays for the site. BrickLink has no such programme, so those are plain links. Neither changes what we show or what we say about it.

How to read this. The value is the median of live sealed listings, after removing instructions, empty boxes, used sets, multi-set lots and implausible outliers. Real sale prices usually land below asking, so the buy-below figure is deliberately the conservative end of the range.