# Adding a new building
From the Building Directory page you can add new projects. The Add Project button at the top right of the page takes you to the building onboarding page that collects the details needed to define the scope, category, and progress of the project.
### Basic Building Details
In the basic building info we require a building name (anything to remember and index the building by), address, and the year construction is or was completed.
The **address** will be used to index and benchmark the building. We also use the address for various geological and environmental condition assumptions.
The **completion year** is the date by which the overall development of the Project is completed or will be completed. An estimated year here is sufficient.
### Building Type
The **building type** specifies how the building is used, which is essential for energy modeling as it influences occupancy patterns and energy usage characteristics. Here, you can define the proportions of various property types within the building. During early-stage calculations, Tuuli relies on the predominant property type to generate initial estimates. For detailed analyses, all specified percentages are considered to ensure a precise and comprehensive assessment.
### Roles
The **roles** define the scope of emissions your organization is responsible for. Based on the roles, Tuuli categorizes emissions as scope 1, 2, or 3. Tuuli uses guidance from the GHG protocol to determine scope emissions by role as shown in the figure bellow.
### Building Stage
The **building stage** reflects the level of flexibility in the building's design. It influences the assumptions required to calculate carbon emissions and the range of recommended strategies. The building geometry allows for a comprehensive analysis of the building’s carbon emissions.
### Building Geometry
For each building, you input the **gross floor area**, **number of floors**, **floor-to-ceiling height**, and **major frame material** to get a rough estimate of embodied carbon. These results display immediately after you successfully input the building details¹.
{% hint style="info" %}
Want to learn more about the assumptions and data Tuuli uses for the rough estimate of embodied carbon? Head to the [Preliminary Analysis](https://docs.trytuuli.com/calculations-and-assumptions/building-directory) page to learn more.
{% endhint %}
In addition to these basic characteristics, we recommend uploading building files to complete a comprehensive life cycle analysis and energy model of the building. The following files are recommended to upload:
* **BIM file**: The BIM (Building Information Modeling) file provides the most comprehensive view of your building. It contains intricate details on design, materials, structural elements and more, allowing for a full digital representation.
* **Bill of Materials**: This document lists all the materials used in the building, including quantities, specifications, and sourcing details.
* **3D Architectural Model**: The 3D architectural model offers a visually rich representation of your building’s design.
* **Structural Model**: The structural model outlines the load-bearing elements and framework of your building, detailing columns, beams, and supports.
* **Energy Bills**: Energy bills provide insight into the building’s historical energy consumption, cost, and efficiency patterns. They are essential for evaluating current energy performance, setting benchmarks, and identifying opportunities for improvement.
{% hint style="info" %}
Want to learn more about the assumptions and data Tuuli uses for the comprehensive life cycle analysis and energy models? Head to the [Life Cycle Analysis](https://docs.trytuuli.com/calculations-and-assumptions/adding-a-new-building) and [Energy Model](https://docs.trytuuli.com/calculations-and-assumptions/energy-model) pages to learn more.
{% endhint %}
The **policies and certifications** sections let you specify compliance requirements or certification goals for the project. Tuuli sets a carbon target that aligns with the selected requirement or certification. If multiple targets exist, Tuuli aligns the decarbonization plans with the most stringent requirements.
At the end of the building onboarding process, the organization sharing section gives you the option to share this building with your organization or team.
{% hint style="info" %}
Want to learn about sharing buildings with your colleagues? Head to the [Organizations ](https://docs.trytuuli.com/pages/organizations)section to learn more.
{% endhint %}
***
¹ If the building characterists entered are out of the bounds of our analysis methodology Tuuli will not be able to provide an initial rough estimate and you will have to wait for the analysis to be completed for results.
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