Standard
RICS WLCA (2nd edition) for the built environment
One Click LCA is the world's first RICS-validated software for whole life carbon assessments, enabling users to generate reports that are compliant with the RICS WLCA standard — the globally recognised framework for consistent, transparent, and comparable whole-life carbon assessments across the built environment.

One Click LCA validated by RICS
One Click LCA is the first software platform validated by the Royal Institution of Chartered Surveyors (RICS) through their newly launched Whole Life Carbon Assessment (WLCA) Software Validation Programme. Read the press release >
capabilities
Supporting the RICS Whole Life Carbon Assessment (WLCA) 2nd Edition
One Click LCA is fully aligned with the RICS Whole Life Carbon Assessment Professional Standard, 2nd edition, and is validated by RICS to support compliant and consistent carbon reporting. Integrate whole life carbon assessments seamlessly, from early design conceptualisation to final as-built performance validation. This comprehensive support ensures you meet all the requirements introduced by the RICS WLCA PS 2nd edition.
Key capabilities include:
- Predefined RICS-aligned default scenarios for life cycle stages A5 (construction), B2–B3 (use phase), and end-of-life processes.
- Simultaneous reporting of decarbonised and non-decarbonised emissions, to reflect grid decarbonisation scenarios.
- Contingency factors applied based on user-defined inputs and dataset characteristics.
- Automated report generation that directly maps to the RICS WLCA reporting structure.
- Comprehensive pre-construction modelling, including demolition of existing assets.

The world's largest construction LCA database
Access 300,000+ data points to empower your sustainability projects. From rigorous verification to ready-to-use datasets, you have an ever-expanding repository of accurate, regionally-relevant, and up-to-date information.
- The largest emission database of construction materials in the world, with 300,000+ qualified datasets.
- Environmental product declarations from globally-recognised EPD program operators
- Integrated datasets from the Department for Energy Security & Net Zero covering workforce travel and round-trip material transport.
- Generic LCA databases including ICE and iStructE for the UK

Understanding RICS WLCA 2nd Edition
What should you know regarding the RICS Whole Life Carbon Assessment 2nd Edition and BECD? Hear from Fabrizio Varriale (RICS), Johanna Jarvinen, and Steven Zijlstra (One Click LCA) to about the changes in RICS 2nd Edition, and how One Click LCA's software can help you comply.

Integrate whole life carbon assessments with One Click LCA
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