Flatiron Building #21023 — LEGO Architecture Set Value
LEGO ArchitectureWhat the Flatiron Building #21023 LEGO set is worth — loose, complete, and sealed.
Flatiron Building #21023 value — Loose $31 · Complete (CIB) $54 · Sealed (new) $104. Prices updated August 2026.
Theme · LEGO Architecture
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↗ Rising · +10%
Complete-in-box price history
Monthly CIB value, based on sold comps.
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Item details
- UPC / EAN
- 673419232180
- Brand
- LEGO
- Theme
- LEGO Architecture
- Set number
- #21023
- Release date
- January 1, 2015
Flatiron Building #21023 (LEGO Architecture) resale value
A loose Flatiron Building #21023 set runs around $31, a complete copy (all pieces + box + instructions) about $54, and a factory-sealed box commands $104.
What drives the price
Retired sets, completeness (every piece + minifigs + instructions + box), and sealed condition drive LEGO value. Exclusive sets and discontinued themes appreciate the most; minifigs alone can carry significant value.
Price guide
What this actually trades for — sold values by condition vs. what sellers are asking today
| Condition | Value | Based on |
|---|---|---|
| Loose | $31 | eBay sold comps |
| Complete (CIB) | $54 | eBay sold comps |
| Sealed (new) | $104 | eBay sold comps |
Frequently asked questions
- What is the best deal for this LEGO set?
- The best value depends on your needs; the loose version is the most affordable at $26.
- Is the sealed version worth the extra cost?
- Yes, the sealed new version is available for $85, offering guaranteed pristine condition.
- How much is the complete in-box version?
- The complete, in-box (CIB) version of the Flatiron Building is listed for $55.