21318 Lego Ideas Tree House
Lego Ideas Lego tree house Tree House Lego

Looking for a way to flex your creative muscles and show off your building skills? Look no further than LEGO Ideas! This popular platform allows LEGO enthusiasts of all ages to submit their own designs for LEGO sets and put them up for consideration. And the best part? If your design gets enough votes, it could actually become an official LEGO set! One of the most recent successes from LEGO Ideas is the LEGO Tree House set, which perfectly captures the essence of a childhood staple. With over 3,000 pieces, this intricate creation lets you build your very own cozy hideaway high up in the branches. Whether you’re a fan of the Tree House LEGO set or have your own ideas to share, LEGO Ideas is a great way to get involved in the LEGO community and let your creativity shine.

Set Details

Discover the endless possibilities of the LEGO® Ideas 21318 Tree House playset, offering a captivating and immersive building experience. With 3,036 intricately detailed pieces, this set is perfect for both seasoned LEGO builders and families alike. The landscape base sets the stage for three LEGO tree house cabins – a main bedroom, bathroom, and kids’ room. The tree itself showcases interchangeable green summer leaf elements and yellow and brown fall leaf elements, all crafted from sustainable-plant-based polyethylene plastic. Additionally, the treetop and cabin roofs can be easily removed for convenient access. Dive into a world of creativity and inspiration with the included buildable picnic table and seats, swing, bonfire, treasure map, and hidden gem element for exciting treasure hunt roleplay. The bedroom cabin balcony features a wind-up crane, adding an extra element of fun to playtime. Unleash your imagination and create memorable family moments with the mom, dad, and kids minifigures, along with the adorable bird figure. This unique and innovative set is accompanied by a comprehensive booklet filled with building instructions and details about the fan creator and LEGO designer behind this extraordinary LEGO Ideas set.

Model Name Tree House
Model Number 21318
Theme Ideas
Sub Themes N/A
Pieces 3036
Minifigures 4
Launch Date August 2019
Current Status Available
Date Retired N/A
RRP £215

Investment Potential

The LEGO Ideas Tree House is currently available at LEGO.com for its RRP of £214.99 and despite having been on the shelves since 2019 is expected to be available for sale until the end of 2024.

Whilst the piece count is high for the price point (just 7p a piece) we feel this is a little inflated by the inclusion of 2 different sets of leaves within the set, so when built and displayed not all the pieces are ever used.

So, is it a good investment?

Launch RRP £215
Price Per Piece £0.07
Launch Price per piece £0.07
5th Year Value £286
Percentage Increase 33%
Expected Annual Growth 10%
Theme Growth 20%
Sub Theme Growth N/A

Theme Analysis

The LEGO Ideas theme is a very diverse theme but a very successful one historically, delivering annualised growth of 20% from the retired sets and a very consistent performance across almost all sets despite the diversity of those sets.

Some of our favourite retired Ideas sets include LEGO Ideas The DeLorean Time Machine (21103) which is now valued above £150 having retired with an RRP of just £35 (annualised growth of 19%) and LEGO Ideas Doctor Who (21304) which has nearly trebled its RRP of £50 since retiring in 2016 (annualised growth of 17%).

Set Number Set Name Retired Date RRP Current Value Total Growth Annualised Growth
21100 Shinkai 6500 Submarine February 2001 £45 £865 1823% 14%
21103 The DeLorean Time Machine December 2014 £35 £156 347% 19%
21304 Doctor Who December 2016 £50 £143 187% 17%
21312 Women of NASA December 2018 £20 £37 85% 14%

Comparable Set Analysis

We tried to look at the most similar sets within the theme here, but to be honest, it’s very hard to find direct comparators for a tree house. Again, there are some strong performers in this group but it’s hard to say they are a strong indicator to the performance of LEGO Tree House.

LEGO Ideas Birds (21301) has more than trebled its £40 RRP since retiring in 2015 (17% annualised growth) and LEGO Ideas Ship in a Bottle (92177) has already appreciated by nearly 40% since retiring at the end of 2021.

Set Number Set Name Retired Date RRP Current Value Total Growth Annualised Growth
92177 Ship in a Bottle December 2021 £70 £97 39% 23%
21301 Birds December 2015 £40 £131 227% 17%
21320 Dinosaur Fossils December 2021 £55 £66 20% 13%
21322 Pirates of Barracuda Bay December 2021 £180 £250 39% 23%


This is a tough one to call. Whilst the theme performance is very strong, we aren’t wholly convinced it will translate to this set and feel that there are probably better investments available currently. If we were looking to buy this set, we would be happy to wait until closer to its retirement and to see if any healthy discounts arise.