Tree House
Ideas, 3,036 pieces. One of the sets the Brick Reserve tracks, and if the policy allows it, buys sealed and keeps.
Set 21318
The box
- Set number
- 21318
- Theme
- Ideas
- Pieces
- 3,036
- Retail price
- $249.99
- Released
- August 2019
- Status
- Retired
The reserve can buy this
Rule 02 of the reserve policy is scarcity: a set has to be retired, or have a published retirement date, before any fee money goes near it. 21318 clears that rule, and like every box it would be bought factory-sealed and never opened.
Brickset's exit date is 31 Dec 2024; BrickEconomy dates the retirement to November 2024. LEGO.com's own listing carries a 'Retired Product' label as of 2026-09-12. Checked 12 Sept 2026.
What this box costs in trading
$18,518
of $BSTR trading volume funds one Tree House at $249.99.
- 2.7% of every trade reaches the fee router as creator fees.
- 50% of that is the reserve's share, so 1.35% of volume becomes brick money.
- $249.99 ÷ 1.35% = $18,518 of trading for this box.
Retail is the yardstick. A retired set usually costs more on the secondary market, and the fee split is the one published on the strategy page.
Specs
- Assembled height
- 37 cm
- Boxed weight
- 3.87 kg
- Box
- 58.0 × 47.5 × 12.0 cmwidth × height × depth
- Sealed value
- $228.59BrickEconomy, 12 Sept 2026
In the vault
No box of 21318 is in the vault yet. Every acquisition is logged on-chain in order and appears on the acquisitions page with its receipt, photo and custody record.
The war chest is currently saving for 10307 Eiffel Tower, not Tree House. See the war chest.
Check it yourself
Piece counts, weights and retirement dates come from these pages. LEGO.com opens its search for 21318, because a retired set no longer has a live product page.
The reserve buys sealed boxes only, under three rules: 01 Sealed, 02 Scarce, 03 Liquid. Holding $BSTR gives no claim on this box or any other, there is no redemption, and sealed sets can lose value. The sealed value above is a dated reference, not a forecast.
LEGO® is a trademark of the LEGO Group, which does not sponsor, authorise or endorse this project.