Treehouse Building Set
$96
Ships from the United States · priced in USD
Trusted by thousands of adult builders worldwide. An iconic adult build designed for builders 16+.
These are compatible building bricks for adults, made to fit LEGO bricks. BrickAlternative is not made by, endorsed by or affiliated with the LEGO Group. Read the termsWhere we ship
- Series
- Ideas & Culture
- Set number
- 21318
- Pieces
- 3,000
- Availability
- In stock
- Ships from
- United States
Free shipping over $50 · 30-day returns · In stock
Also stocked in our Europe warehouse: Tree House for €80. Tree House — €80
Details
Trusted by thousands of adult builders worldwide. An iconic adult build designed for builders 16+. Over 3,000 pieces. One unforgettable display.
Ideas Set Adult Build (16+) Limited Availability
Not a Toy — A Build Worth Displaying
The Ideas Tree House is created for adults who love thoughtful design, immersive building, and display-worthy results. Once completed, it becomes a centerpiece — not something you put back in the box.
Why Adult Builders Love It
Challenging & Rewarding
Over 3,000 pieces create a deeply engaging build that takes hours — not minutes.
Nature-Inspired Design
Organic textures, tree structure, and interchangeable seasonal leaves.
Display-Worthy Finish
Designed to look stunning on shelves, desks, or in your living space.
Packed With Thoughtful Details
- Three uniquely designed tree house sections
- Fully detailed interiors with furniture and accessories
- Removable roofs for easy viewing
- Hidden elements and playful surprises
- Interchangeable green & autumn-colored leaves
Genuine Ideas Construction Set
This is a genuine Ideas product — not a replica, not a clone. Every set is complete and carefully packaged to ensure a premium experience.
A Ideas Classic Loved Worldwide
Frequently praised by adult fans as one of the most iconic Ideas sets ever released.
1,200+ Adult Builders Ordered This Month
Limited Clearance Batch
Only 17 units remaining from this batch.
Once sold out, price returns to regular retail.
Product Specifications
Dimensions
Measures over 14“ (37cm) high, 10“ (27cm) wide and 9“ (24cm) deep.
