Sustainability

Overview

Sustainability assessment of timber buildings requires a holistic perspective that goes beyond environmental performance alone. It involves evaluating how buildings perform across the three key dimensions of sustainability: environmental, social, and economic. From an environmental standpoint, timber buildings can reduce carbon emissions and support resource efficiency; socially, they influence occupant health, comfort, and well-being; economically, they must provide long-term value, affordability, and durability. This course introduces you to these interconnected dimensions and equips you with the tools and criteria needed to assess the overall sustainability of timber buildings in a balanced and integrated way, with a strong focus on real-world application. 

Prerequisites

1. Basic understanding of sustainability concepts and the three dimensions (environmental, social, economic)

2. General knowledge of building construction principles and materials, especially timber

3. Awareness of life cycle thinking and building performance aspects (e.g., energy use, resource efficiency, indoor environmental quality)

4. No prior knowledge of the Level(s) framework required (it will be introduced during the course)

5. Willingness to learn new assessment methods and actively participate in group work.

Learning outcomes

1. Understand the principles of sustainability and their application in the built environment

2. Explain the three key dimensions of sustainability (environmental, social, economic) in relation to timber buildings

3. Apply the Level(s) framework to assess the sustainability performance of a selected building

4. Evaluate building performance using relevant indicators such as carbon footprint, resource efficiency, and indoor environmental quality

5. Interpret and discuss assessment results in a structured and critical way

6. Work effectively in a group to carry out a sustainability assessment

7. Present findings clearly in a written and/or oral format.

Timber buildings exemplify sustainability by seamlessly combining environmental, economic, and social benefits into their design and construction. 

• From an environmental perspective, timber is a renewable resource that sequesters carbon throughout its life cycle, significantly lowering the overall carbon footprint of a building. Its production consumes far less energy than conventional materials like steel or concrete and encourages responsible forestry practices that maintain biodiversity and protect ecosystems. 

• Economically, timber enables faster, lighter, and more flexible construction, reducing labor, transportation, and maintenance costs while extending the life span of structures and supporting local forestry and manufacturing industries. 

• On the social side, timber creates healthier indoor environments with superior air quality, natural thermal regulation, and acoustic comfort, while its warm, natural aesthetics promote wellbeing and strengthen the connection between people and nature. Together, these dimensions make timber buildings not only an efficient and resilient choice but also a material that supports long-term planetary and human health.

Level(s) is the EU initiative that joins up sustainable building thinking across the EU by offering guidance on the key areas of sustainability in the built environment and how to measure them during design and after completion.

Level(s) is not a certification system. It is the EU’s framework for defining what the EU consider to be the key objectives of sustainability in buildings, and how to measure them using indicators. It underpins EU decisions and directives – for example, the LifecycleGWP measurement requirement of the updated Energy Performance of Buildings Directive (EPBD) is based on indicator 1.2 of Level(s).

Level(s) provides six macro‑objectives and core indicators for sustainable buildings. Key links to timber design: 

1. GHG Emissions (A1‑C4 + D) → leverage biogenic carbon and low‑carbon supply chains. 

2. Resource use & circularity → design for deconstruction; recyclable connections. 

3. Efficient water use → off‑site prefabrication reduces site water. 

4. Healthy spaces → biophilic qualities of exposed timber. 

5. Resilience & climate adaptation → robust detailing for moisture/fire; seismic capacity via ductile timber systems. 

6. Cost & value → schedule savings, ESG‑linked finance incentives.

In this assignment, you will work in a group to assess the sustainability of a timber building using the Level(s) indicators. 

You will explore how the building performs across environmental, economic, and social dimensions, from the materials it’s made of and the construction process to its operation and eventual end-of-life. Using these indicators, you will learn to measure energy use, carbon footprint, and indoor comfort, while understanding how timber contributes to sustainable construction. By the end, you will gain hands-on experience in evaluating real buildings and applying sustainability concepts in a practical way.

Task 2 - apply Level(s) Indicators

You are required to assess the building using selected Level(s) macro-objectives and indicators, applying as many relevant indicators as possible. For this fill in the following columns in the table provided below:

• value/Qualitative assessment - find or calculate the respective value for the selected building;

• KPI's - find the relevant benchmark for the respective criterion;

• conclusion - compare your buildings' value with the respective benchmark.

Additional information can be found in the Level(s) User manual 2: Setting up a project to use the Level(s) common framework. 

An ESG strategy in construction and real estate focuses on minimizing environmental impact, promoting social responsibility, and ensuring strong governance across the development, operation, and management of buildings and infrastructure. Environmental initiatives often target energy efficiency, water conservation, low-carbon materials, and waste reduction throughout a building’s lifecycle. Social considerations include occupant health and wellbeing, worker safety, accessibility, and community engagement, while governance ensures transparent decision-making, ethical procurement, and compliance with regulations and sustainability standards.

Developing an ESG strategy in this sector typically begins with a materiality assessment to identify the most significant risks and opportunities, such as carbon-intensive construction processes, resource scarcity, or labor practices. Companies then set measurable targets like achieving green building certifications (e.g., LEED Certification or BREEAM Certification), reducing operational energy use, or improving supply chain sustainability. Integrating these targets into project planning, procurement, and facility management ensures ESG principles guide decisions from design through operation.

A robust ESG strategy in real estate not only improves environmental performance but also enhances financial resilience and market competitiveness. Sustainable buildings often reduce operating costs, attract quality tenants or investors, and increase long-term asset value. Additionally, strong social and governance practices enhance reputation, worker safety, and regulatory compliance. By embedding ESG into construction and real estate practices, companies can deliver projects that are environmentally responsible, socially beneficial, and governed with integrity, positioning themselves as leaders in a rapidly evolving, sustainability-focused market.

• Natural Resources Canada. (n.d.). Mass timber buildings are sustainable, safe and healthy. https://natural-resources.canada.ca/sites/nrcan/files/forest/sof2021/Mass-timber_EN_web_accessible.pdf 

• ECOS. (2023). How sustainable timber buildings can help fight the climate crisis. https://ecostandard.org/wp-content/uploads/2023/02/ECOS-REPORT-How-sustainable-timber-buildings-can-help-fight-the-climate-crisis-March-2023.pdf 

• ARUP. (2019). Rethinking timber buildings. https://www.arup.com/insights/rethinking-timber-buildings/ 

• LEED: https://www.usgbc.org/leed

• BREEAM | Sustainable Building Certification: https://breeam.com/ 

• WELL: https://www.wellcertified.com/ 

• DGNB Certification of Sustainable Buildings: https://www.dgnb.de/en

• Living Building Challenge: https://living-future.org/about/

• Global Reporting Initiative. GRI Standards. https://www.globalreporting.org/standards/

• Principles for Responsible Investment. What is ESG? https://www.unpri.org/pri/what-is-esg

• World Green Building Council. ESG in Real Estate. https://www.worldgbc.org/  

Figures were generated using ChatGPT