Official LEGO® image · © LEGO Group and/or the respective rights holders. Source: LEGO Italy ↗

Creator · SET 31078

Treehouse Treasures

A compact tree house with a trunk and adventure accessories. The main model develops vertically before the landscape details.

Pieces: 260
Release year: 2018
Theme: Creator
Set number: 31078
LEGO recommended age: 7+
Archived regional retail price · Germany: 29.99 €

Official LEGO archive Official building instructions

Archived regional retail price in the stated market and currency. It does not establish the Italian launch price; no estimated currency conversion. Brickset ↗ · Reference checked on 22 October 2026

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Official English name verified at: LEGO English archive ↗ · Checked on 26 October 2026.

TIME TO BUILD

How long does it take to build Treehouse Treasures?

First build · with help if needed

For younger children, we estimate the first illustrated setup, with adult guidance when needed. Ranges reflect building familiarity, not a child’s age or ability. Free play and learning have no completion time.

Editorial estimate · first setup

Beginner

≈ 2 h 15 minSuggested range1 h 15 min – 3 h 30 min

Intermediate

≈ 1 h 30 minSuggested range45 min – 2 h 30 min

Experienced

≈ 1 hSuggested range30 min – 1 h 45 min

First guided arrangement: one model for 3 in 1 sets, a small composition for creative boxes, and setup alone for expansions. Excludes play, breaks and electronic configuration. These are broad editorial estimates, not measured times or targets to meet.

How we estimate times · sources and method

Editorial assessment: A compact tree house with a trunk and adventure accessories. The main model develops vertically before the landscape details. Grass and water accompany the building support with small exploration accessories. Creative boxes and modular decorations refer to one first illustrated arrangement; 3 in 1 sets to the main model only, and expansions to their first setup. An adult may guide the child. Ranges reflect building familiarity, not age or development; they do not measure play, learning or a speed contest. For older sets, unnumbered bags or previously mixed pieces may prolong sorting. No verified timed build: indicative values with substantial variation.

Sources do not always specify the builder’s experience. The three experience bands are our editorial assessment, based on the complexity of the set and individual accounts where available.

LEGO · set-specific instructions ↗
Official name, pieces, age and imagery; no timed building data.
LEGO · set manual ↗
Document for this set number. The duration is an editorial estimate, not a LEGO timing.

Checked: 26 October 2026 · Method v1.0 · Limited reports; not a statistical average.

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MAKE ROOM FOR YOUR NEXT BUILD

How much display space does it need?

Assembled-model dimensions are not yet documented for this set. Box dimensions cannot tell you how much display space it needs.

BEYOND THE BRICKS

Did you know?

The model, the history, the ideas

Inside the set

A tower among branches

The small white and red house rises above a brown trunk.

LEGO source

A natural base

Grass and water accompany the building support with small exploration accessories.

LEGO source

Beyond the set

The stories, places and inventions behind your build.

A roof made of treetops

In rainforests, interlocking crowns form the canopy. The light that gets through influences which plants can grow below.

Read the full story

New South Wales parks describe a forest with distinct vertical layers. Tall emergents rise above the canopy, while shade-adapted plants grow below. Some epiphytes live on trees without parasitising them, obtaining resources from rain and fallen leaves. The forest has a vertical structure, not just a row of trunks.

NSW National Parks

Trees help maintain the climate

The canopy protects the forest from drying winds and temperature changes, helping retain moisture and coolness. A treetop house can be an invitation to explore this vertical environment.

Read the full story

The canopy shields the forest from dry wind, abrupt temperature shifts and moisture loss. Ferns, mosses, fungi and seedlings occupy the shaded floor. The layers are connected: changing the cover above changes conditions below, revealing a network of relationships as well as a variety of species.

NSW National Parks

Expanded stories updated on 29 October 2026

Written by HowLongToBuild · Sources are linked with each story · Checked on 26 October 2026. Historical facts and story details refer to the context described.

THE COMMUNITY’S EXPERIENCE

What was it like to build?

Three separate scores from 1 to 10. For difficulty, 1 means very easy and 10 means very difficult.

No approved ratings yet. Scores are never generated by this site or inferred from the recommended age.

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Building tips from the community

Specific steps, useful checks and sticking points. Contributions appear after moderation, in their original language. Do not upload instruction pages or personal contact details.

No approved tips yet.

SET THE MOOD

A soundtrack for your build

· Selected for the subject and atmosphere

Hazy electronic textures suggest imagined landscapes and memories. This suits world-building and atmosphere rather than merely matching any model containing circuitry.

OUR PICK

Music Has the Right to Children

Boards of Canada

Rhythmic and lively

Spotify ↗Apple Music ↗

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