Close-up of large green leaves with a blurred modern building in the background.

Building carbon calculation platform

Reduce emissions. Gain control.

Emissions figures from the first sketch, while the design can still change. For contractors, architects, developers and consultants.

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Used by 110+ customers across the Nordics

THE AUTOMODEL

Carbon numbers from the first sketch

Compare options at sketch stage, before anything is fixed, and see which ones come in under target.

See how the Automodel works →

Try it: compare six structural systems

Pick a structural systemkgCO2e / m2 GFA
0
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What these numbers are

Each figure is the material carbon this frame-and-floor choice produces for one reference building, a 4 000 m² office over four storeys, so the six are directly comparable. Covers structure, roof, facade and internal walls; excludes foundations and ground works, building services and fit-out. Indicative only: the factors are chosen to rank materials correctly, not to report a project. A real calculation uses your own geometry and verified product data.

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Reduzer's features

Follow one building through Reduzer

Once the early numbers are in, the same project carries on through comparison, schemes, every phase and your portfolio.

Compare options

See where the difference is

Put two versions side by side and see which elements move the number.

Any scheme

Add the schemes you report to

TEK17, BREEAM, FutureBuilt, EU Taxonomy and more, in the same project.

Every phase

One project, from concept to in use

Add a version for each phase and keep them side by side, without starting over.

Portfolio 2.0

Every project, one view

See which buildings are on track against your targets, across the whole portfolio.

CompareAdd Schemes To ProjectAdd new versionPortfolio overview
kgCO₂e/m² GFA
Load bearingExternal wallsSlabsRoof
Office, glulamOffice, steel
TEK 17 (2022)NS3720BREEAM-NOR v6.0BREEAM-NOR 6.1FutureBuilt ZERO v3.1FutureBuilt ZERO v3FutureBuilt ZERO v2EU Taxonomy NorwayLevel(s)SvanemerketOsloByggDFØBergen Kommune Mai 2024Trondheim kommune, Klimaveileder 2024KlimatdeklarationKlimatdeklaration SBEF/BSAB83BREEAM-SEMiljöbyggnad 4.0NollCO2EU Taxonomy SwedenUmeå klimatfärdplanBygningsreglementet BR18Iceland HMS (2025)RICSBREEAM-UK New Construction v6.1DGNB ENV1.1LEED v5LEED v4.1BREEAM International New Construction v6
4 schemes added. Switch between them any time.SAVE CHANGES
Give version name|
Select version phase
ConceptEarly DesignDesignConstructionAs BuiltIn Use
TimelineBy completion year, kgCO₂e/m² BTA; dot size is floor area
Today01002003004005002019202520302035204020452051
Misses (2)Target pathHollow: an estimate (before as built)Size: floor area

Verified EPD library →

Verified EPDs, national databases and Reduzer's own data.

BIM integration →

Quantities straight from the model, updated when you link a new version.

Collaborate and share →

Your whole team works in the same project.

Ready-made reports →

Graphs, tables and documentation, including the TEK17 report and Boverket export.

For every role in the project

Make decisions faster and better

A worker in a high-visibility jacket on the upper deck of scaffolding around a building under construction.

Contractor

→

Win more tenders, with less overhead

Rolled and flat architectural drawings showing a building elevation in fine line detail.

Architect

→

Shape the design before it's locked in

Two tower cranes above a multi-building construction site, photographed in black and white.

Developer

→

Track carbon targets across your portfolio

An open laptop on a bright desk with a graphics tablet, notebook and pens arranged around it.

Consultant

→

Calculations that hold up when someone checks them

Customer stories

In their own words

See all customer stories
Reduzer is a useful tool for us at Betonmast. The clients we work for greatly appreciate that our local offices can find cost-effective climate measures both in tenders and during construction.
Siv Tallang Vold
Environmental manager, Betonmast
Our ambitions require more than project-by-project calculations. We need a combined overview of how a broad and varied development portfolio delivers on climate.
Niall Ó Muiré
Director of Sustainability and Business Development, Bane NOR Eiendom
For my early-phase calculation, I needed a tool that was quick and intuitive. Automodel in Reduzer provided the solution, allowing me to generate results, create different scenarios, and compare alternatives.
Lise Kiely
Multiconsult
When I started using Reduzer I just quite quickly realized that this is a new approach to using an LCA tool. It really changed my everyday working flow in a positive way.
Michael Lommertz
CEO, Zero Emission Studio

Reduzer FAQs

What Reduzer is, who it's for, and how it helps you reduce emissions and stay in control.

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What is Reduzer?

Reduzer is a carbon calculation platform built for the construction industry. It calculates a building’s emissions from early concept through completion, giving project teams a single place to model, test, and compare carbon outcomes. The platform makes carbon measurable and actionable at the moments when design and material choices still influence cost, performance, and compliance.

Who is Reduzer for?

Reduzer is for all roles involved in shaping a project’s carbon footprint: architects, engineers, consultants, contractors, and property developers.

It scales from small practices to large portfolios, and is designed to be robust enough for carbon specialists, with full transparency into the data. It is also intuitive enough for non‑experts, so anyone responsible for a decision can test and act on the numbers themselves.

The platform ensures that carbon ownership sits with the people making the choices.

How does Reduzer help reduce emissions?

Reduzer enables reductions where they matter most: early‑stage decisions. Using Automodel, the platform generates carbon calculations from the first sketch, when design and material changes have the highest impact.

Teams can test design and material alternatives, compare versions side‑by‑side, identify lower‑carbon options before they are fixed, work through all project stages in a single continuous model, and switch between regulatory schemes without recreating projects.

Carbon becomes a strategic design parameter, giving teams control over reductions and visibility into their impact.

Which regulations and schemes does Reduzer support?

Reduzer is built around the standards that underpin building carbon: EN 15978 for building-level assessment, EN 15804 for product data, and NS 3720 for Norwegian projects. It also supports FutureBuilt ZERO's dynamic method. It produces the documentation for the schemes our markets run on, including Norway's TEK17, Sweden's klimatdeklaration, BREEAM, FutureBuilt, and many more, so the compliance report becomes an export from work you've already done.