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Build your own treehouse – A professional shows you what to look out for, when building a treehouse!

 

Whether it’s a treehouse for children or adults, a simple play tower or something big to live in – with a well thought-out design you will master your project and save yourself a lot of time and money.

Here we show you step by step how to create your perfect building plan:

Preparation and ideas:

1. Where do I build my treehouse?

2. How, by whom and when it is used?

3. What should it look like?

The rough draft – planning the platform:

4. Set the height of the platform

5. Four steps to the first draft

The exact plan – The art of building tree houses:

6. The scale plan

7. The right construction timber

8. The Art of Building a Tiny House

Preparation and ideas

1. Where do I build my treehouse?

These questions will help you find the best place:

  • Is my tree suitable as a support tree? (see topic “The right tree”)
  • Am I allowed to build a tree house on this spot? (see topic “Planning permission”)
  • Will my neighbours be disturbed (view, noise, shade)?
  • Should the house appear dominant or hidden?
  • Do I want to be able to see the tree house from my house (playing children?)
  • What view would I like to have?

Especially with public treehouses and treehouse hotels you should be aware that longer, steep paths cause more work and costs: Path maintenance (leaves, mud, etc.), longer utility lines (electricity, water), higher staff costs, …

 

A tip Pete Nelson once gave us:

If you have a favourite place in your garden, think carefully about whether you want to cover it with a treehouse. Sometimes it is better to keep that place and build in the second most beautiful spot.

2. How, by whom and when the treehouse is used?

Basically, you should ask yourself how long you want to have fun with your tree house? Will it only be a temporary world of experience for the children or do you want to create something for eternity? The longer you want to use it, the more thoughtful the planning should be and the higher the quality should be!

How is the tree house mainly used?

  • Platform to enjoy the view, invite friends, spend summer nights.
  • Focus on children and play: Swings, slide, climbing elements, mud
  • Small oasis for meditation
  • Heated office or creative space (summer and winter)
  • Overnight place for friends and guests
  • Sauna
  • How much space do I need for the furnishings: double bed, couch, desk, …

Who will use the tree house most of the time?

  • Small playhouse for children
  • Large room for adults
  • Will neighbours, friends, strange children come to play?
  • How safe is it for small children: access, height, play elements, railings?
  • Should children run, climb & romp in circles? Or will that disturb the neighbours?
  • How many people should be able to stay there at the same time?
  • Are physically handicapped guests also expected?

When will the tree house be used?

  • Do I only use the treehouse in summer or also in the cold seasons?
  • Should it be insulated and heatable? Stove or electric heating, water supply, electricity, lighting?
  • Do I need a roof or is a mere platform sufficient?
  • How do I get to and onto the treehouse in rain and snow?

3. What should the tree house look like?

Take your time and do some soul-searching! The more precise your idea of the treehouse and its use, taking into account the surroundings, the more pleasure you will have with it later.

It is also ingenious to divide the treehouse into several levels, e.g. a heated office room at the bottom, a cool sleeping room with a view above and a free viewing platform at the top.

To help you plan further, you should already have a rough idea of the size and shape of your treehouse.

You can find lots of inspiration right here on our site, or on the internet, on Google, on Pete Nelson, on Instagram, Pinterest and so on.

Platform planning

Have you found the perfect place for your treehouse and do you have an idea of how big your project should be? Then it’s time to measure the trees and find a solution for anchoring your platform in them.

 

4. First of all, find the desired height of your platform:

Si ya sabes dónde están los arboles perfectos, hay que hacerlo uno mismo

1. Climb a ladder into the tree and stay there for a while – this way you will get a good feeling for the height, the view, the course of the sun, as well as possible attachment methods.

2. What will the tree look like in winter when the leaves are gone? Will there be any unwanted views of the neighbour?

3. How do you get into the treehouse? Ladder, stairs, rope ladder, spiral staircase, intermediate platform. Can you still get up with a tray in your hand?

4. Is the height safe for children, neighbours and visitors?

5. From a platform height of 3 m upwards, everything becomes more and more beautiful, but it is also much more complicated to build: Fetching material up, securing, rope technique, building access, fixing the roof.

6. Where can the treehouse stand? Where do branches get in the way? Remember that branches will also swing. Individual branches < ø 10 cm can also be removed if necessary.

 

Our tip:

Branch penetrations are very difficult to seal because the tree grows and moves constantly. We recommend penetrations of the building envelope (roof, walls) only for uninsulated houses, these can dry more easily.

Mark the platform height directly on the tree (e.g. with a small wood screw and coloured flag), transfer the height to the other trees (e.g. hose level, extended spirit level, laser, levelling device).

Our tip:

If you are not always on site, take photos from all possible angles. Place reference points in the picture (e.g. metre rule, long spirit level and colourful height marker) – this way the pictures will still be meaningful later.

5. Four steps to the first draft

Now we switch to a bird’s eye view:

Measure your terrain and trees as accurately as possible and transfer everything to your site plan – it should be approximately to scale:

Draft Step 1 – The initial situation on site::

  • Exact distance of the trees (bark to bark)
  • Tree species (there are good tree recognition apps for this)
  • Diameter ø at about the height of the platform
  • Inclination / curvature of the tree trunk & direction (sketch tree 1)
  • Branch courses ø < 10 cm (sketch tree 3)
  • Property boundary
  • Point of the compass south (course of the sun)
  • Main weather side (driving rain, dominant wind direction)
  • Slope (sketch contour lines)
  • Best view (sketch eyes)
  • Where is the house or the direction from which the tree house can be reached (sketch red)

Our tip:

This is a really fun way to get the whole family involved – give your kids the floor plan and some crayons and let them draw the wildest dream castles! You’re sure to come up with some fun ideas.

Design Step 2 – Alignment of platform and house:

Now think about what your platform could look like – it’s best to make several drafts at once::

  • Where is my treehouse (the walls) on the platform? (sketch green)
  • Where should the terrace be? (sketch grey)
  • From where do I get to the treehouse, where is the ascent (sketch orange)? Is there room for a staircase?
  • How can I move around on the platform? (sketch orange lines)
  • Where will branches get in the way?
  • Where do I want to direct my gaze? Where do I want to block the view (neighbours)?
  • How do I catch the sun?
  • How do I protect my house / house entrance from driving rain?
  • Where do I sit protected from the wind?
  • Where do I install slides, climbing elements, … so that children can run in circles?

 

At this stage you can also start thinking about the layout of your treehouse:

  • Where do I need how much space for bed, desk, chairs?
  • How do I move around the house?
  • Where do which windows go?
  • Where do I put wet shoes and clothes?

Design Step 3 – Find a suitable supporting structure for the platform:

Step 2 and step 3 are closely linked, the question is how to anchor your desired platform in the tree. Be sure to check out the following pages:

In this example we decide on the combination of a triangular construction (tree 2 yellow) and two laterally attached support beams (red lines).

Ask yourself:

  • Is everything stable and in balance?
  • Can the platform wobble, tilt, turn?
  • Are there large lever arms if, for example, 10 people stand in one corner of the platform?
  • Can the trees swing freely in all directions?
  • Can the trees grow in thickness?
  • Is the main load well supported by the treehouse?
  • How do I mount my cross beams on the support beams (red)?

Our tip:

Simulate your platform construction in the tree with a few wooden slats – this way you quickly get a feeling for the finished dimensions and can see where e.g. branches get in the way.

Design Step 4 – Be water my friend:

One of the biggest challenges in timber construction is water and moisture!

 

  • Think about where the main rain comes from (blue cloud sketch)?
  • Where does the water run off the roof?
  • Where does water splash?
  • How far should my roof overhang (red lines)?
  • Do I want a larger roof overhang to the weather side or above the entrance?
  • Important: Does the edge of the roof (including the gutter!) have enough space 2 – 3 m above the platform – even if the tree swings!?

Our tip:

You can set your stairs / ladder / slide firmly in concrete and thus plan it as an additional stiffening element.

The exact plan – The art of building treehouses

 

6. The scale plan

Now it’s time to get down to business: You already have the rough design and know how you will attach your platform.

Now draw a new plan to scale.

If you’re going oldschool, use a large sheet of paper to draw on.

Our tip:

If you know your way around a PC, we recommend a 3D drawing programme such as “Google SketchUp” – you can test this software free of charge for 30 days, it is intuitive to use and there are lots of tutorials on the internet. You will see immediately if you make mistakes in your planning, so you will save a lot of time later!

Drawing to scale means, e.g. with M 1 : 50, 500 cm “in real” are 10 cm on paper. Choose your scale so that your drawing sheet is well filled, but you still have room for notes.

Why draw to scale?

  1. You get a better feeling for the distances.
  2. You can measure rough dimensions directly from the drawing.
  3. Mistakes and sticking points become visible quickly

7. The right construction timber

 

Wood type:

All construction timber for outdoor use, i.e. in the open air, in splash water areas or directly exposed to rain should be particularly resistant:

Wood species such as larch, Douglas spruce or cedar are optimal for humid areas; they have stored resins and oils that make them more resistant to fungi and rot. The big advantage with the treehouse is that the wood is air-circulated at height and can dry very quickly.

Super-sturdy woods like oak are not necessary for treehouses; they are too heavy, more difficult to work with, and more expensive. You should also avoid tropical woods (uncontrolled deforestation of rainforests, very high CO2 footprint, simply unnecessary!), instead support your local wood dealer!

Beam dimensions:

Wooden beams are usually installed upright (see picture).

Beam and platform beams should be 6 – 8 cm wide so that they can be screwed together well. The height depends on the span and load and should be 12 – 30 cm.

Longitudinal compression loaded struts can have a square cross-section, e.g. 8 x 8 cm.

Load-bearing posts and uprights have a minimum cross-section of 10 x 10 cm, depending on the load and length.

The platform beams on which the floor boards are mounted have a centre distance of about 60 cm.

The floor boards are 25 – 30 mm thick and 10 – 15 cm wide, depending on the centre distance of the platform beams.

 

You can find more on this topic in our FAQ section.

8. The Art of Building a “Tiny House”

Now it’s time to work out the exact measurements and make the plan that you will work with later.:

Exterior:

  • Access / stairs / ladder (pitch & width).
  • Railing height / shape / regulations!
  • How does water run off the house wall?
  • How do I decouple the house from the terrace in terms of moisture?
  • How do I avoid branches?
  • Where do I place play elements?
  • How much space do I need for table & chairs?

House:

  • What materials do I use?
  • Roof pitch / roofing / guttering?
  • Wall, roof & floor construction
  • Where does the stove pipe go?
  • Take care of the detail drawings (windows, doors, corners, …) from the beginning.

Interior:

  • Power lines / sockets / lighting
  • Exactly how much space do I need for smooth movements: sitting down, getting dressed, undressing, smooching?
  • Plan for the fact that your children will grow up quickly and need more space for themselves and their friends.

If you’re struggling with measurements, walk through your house with a metre rule and measure everything you find comfortable. Move around your home attentively – this way you will quickly get a feel for the desired dimensions.

Pro Tip:

Plan for the sun’s course and the most beautiful views from the beginning. Catch the morning and evening sun through the windows and play with the partial shade of the trees at midday.

 

The art is to create the ultimate cosiness in the smallest of spaces, and to know from the outset exactly which corners you will linger in later. Have fun!!!

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