In 2023, no offical building Life Cycle Assessment (LCA) methodology existed for Luxembourg and no sectoral carbon roadmap benchmark were available. Low carbon construction practices were not yet mature locally and carbon reduction was perceived primarily as a cost constraint.

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Define carbon reduction trajectories for 2030-2040, identify feasible building mode mixes balancing performance and cost, integrate carbon performance into design processes and implement monitoring and reporting tools.

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1. Carbon strategy and business impact design

We made the methodological choice of a dynamic and Luxemburgish LCA. This defined the district level carbon neutrality challenge and the portfolio-wide reduction scenarios.

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Outcome : carbon-neutral ambition confirmed for Rout Lëns and portfolio targets set at -30% by 2030 and -50% by 2040.

Carbon objectives were translated into board-level commitments.

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2. Innovation process for low carbonbuilding modes implementation

We empower innovation within our stake holders in order to increase the feasibility of the chosen strategy : identify and prescribe low carbon concrete, off site building modes , biosourced insulation materials and material reuse.

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3. LCA implementation coordination & change management

We secured implementation by integrating LCA into contracts and design processes. We led the change among the stakeholders in order to ensure shared target and KPIs.

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4 .Carbon trajectory modelling & carbon reporting

We develop tools to monitor : cost impact, trajectory compliance and carbon footprint assessment

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Results

A structured and financially modelled carbon trajectory achieving grounded ambitions and a blueprint for implementing carbon performance targets in the design process of any real estate developer, and among the building stake holders, architects, engineering firms, and general contractors.