1. Register your account

Click on the Log in (1) button and register (2). This requires filling in the form and accepting a run-of-the-mill version of our Terms of Service. There is no limit of accounts per company. After registering your account an administrator must verify it. The confirmation e-mail will arrive within a working day.

2. Log in and start calculating

The Log in button will always be visible on the main page. Simply enter your account's e-mail address and chosen password (1). You can begin the calculations right there on the main page (2).

3. Add the general information about the house

This does not affect the calculation but will be displayed on the results page to ensure the client that they are looking at the right calculations. A picture or scheme of the house must also be added (max. 3 pictures).

4. Enter the material budget

Enter all the materials used in the construction of the house (including surplus). It is important to add at least 95% of the materials by weight. The calculator will figure out the weight of the construction materials, therefore it is not important if you enter 25mm x 25mm x 100m x 1 pcs or 25mm x 25mm x 1m x 100 pcs. NB! Beware of the units, length is in meters, other dimensions in millimetres.

5. Be sure to enter your materials efficiently

If you have the same material come in different dimensions, there is no add up all the different sizes by yourself – this will be done by the calculator. Simply enter new rows of materials according to the material type and dimensions by clicking on the “+” sign.

6. Materials that you do not know about

The calculator is in constant development and does not include all materials and producers. If you come across a material we do not have in the database, use similar materials or let us know at If the missing material makes up less than 1% of the entire mass of the house, then it is not essential to the calculation. For elements that you lack information about (e.g. type of roofing), just enter the amounts (Generic).

7. Enter the material budget

This part is necessary so we could double-check all the data and ensure that you get the most accurate results. The material budget will remain confidential as per the Terms of Service.

8. Look at the result page

The two most significant parameters of the carbon label are its class ranging from A+ to F (1), which is calculated based on the greenhouse gas emissions per tonne of the finished house’s weight. Let's take a look at this example.

9. Make corrections, if necessary

If something seems off or you’d like to improve the material section, you can do this by clicking on “Modify current”. After the corrections you will need to re-upload the pictures and material budget.

10. Order the label

Once you’re satisfied with the calculations and carbon footprint class, click on “Order this label”. This will be followed by an administrator reviewing the calculations. They will either accept or reject the calculations within a working day.

11. The house’s carbon label is now public!

A 4-digit ID-code will enable users to find the house’s carbon label in English or Estonian. The PDF can only be downloaded by the user who created the label. The PDF of the label can be used digitally on your website, printouts or other media.

12. Print the results' page

In addition to ordering the label you can also print out the results page of your carbon footprint, in English and Estonian. The design is optimised so it would look presentable in print formed as well.

The bill will be presented for all the ordered and approved labels once at the end of the month. Test calculations are free of charge.

In case of questions or mistakes, contact the project manager at:


Tel: +372 555 71 008. 

Last labels

A carbon label for Wooden Houses

The application grades the cradle-to-gate greenhouse gas emissions of creating your wooden house and issues a unique ecolabel for each model.

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What's the point?

Construction is a major contributor to global greenhouse gas emissions. Wooden houses can change this.

See other Q&A's ›