Life cycle assessment, or LCA, measures the environmental impact of a building across its entire life. It counts the carbon and other emissions tied to every stage, from raw material extraction and manufacturing through construction, use and eventual demolition or recycling.
In architecture and construction that full-life view matters, because the choices that decide most of a building's footprint are made early, on the drawing board. LCA turns those choices into numbers you can compare, so the heavier options show up before they are built.
What LCA measures
LCA is not the same as a general sustainability rating. A rating tends to score and rank a building against a checklist. LCA calculates the actual load from each material and process, which gives a fuller and more honest picture of where the impact comes from.
Most of the attention sits on embodied carbon, the footprint of making and building with the materials themselves. Operational carbon, the energy a building uses once it is running, is the other half. A complete assessment keeps both in view.
Why LCA often comes too late
The trouble with LCA in practice is timing. Too often it happens after the design is locked. A consultant runs the numbers, writes a report, and the building goes ahead as already drawn. By then the carbon picture is a record, not a decision.
The value is greatest in the early stages, where materials and structure are still open and a single choice can move the result by a wide margin. The earlier the read, the more it can change.
How BIM brings LCA into design
This is where BIM changes the work. A BIM model already holds the quantities, materials and geometry of the design. Connect LCA to that model and the calculation runs as you work, instead of as a one-off study at the end.
Change a material, adjust a structure or swap a slab, and the carbon impact updates with the model. LCA stops being a separate report and becomes part of designing. We expect this pairing of LCA and BIM to become standard practice across the industry.
LCA tools for Archicad
Two tools make this practical in Archicad. DesignLCA is a free Archicad plugin that reads your model and gives an early-stage carbon read from the first sketch, with no EPD work and no LCA expertise needed. It is built for the moment when decisions are still open.
When a project reaches the point of a formal climate declaration, Anavitor LCA, our own LCA software for Archicad, takes it the rest of the way. It reads from and writes back to the model, and draws on curated environmental product declarations, so the numbers stand up to scrutiny.
For teams who want to build the skill itself, the Green BIM Certificate course trains Archicad users to design for recognised green building standards such as BREEAM. It runs in Finland, Norway and Sweden.
Getting started
Bringing LCA and BIM together is as much a process shift as a tool choice. The payoff is a design process where carbon is visible while the decisions are still open, and a more sustainable, more efficient way to build.
If you want to bring LCA into your Archicad workflow, talk to us. Nordic BIM Group helps architects and construction teams across Finland, Norway and Sweden put these tools to work.
