Summary
Generic Construction Data (GCD), UK edition, is a free database of 836 generic UK construction material datasets from One Click LCA. It is One Click LCA's recommended replacement for the ICE datasets, which One Click LCA deactivated on September 30, 2026. For the transition, see Moving from ICE to GCD.
Cost: free for end users who accept the GCD terms of use, whether or not you are a One Click LCA customer. Not available to software or database providers.
Action needed: none. GCD datasets already sit in your One Click LCA account.
Coverage: 836 UK datasets across eight product categories, including an equivalent for every ICE dataset.
Data: cradle-to-gate carbon (GWP) based on EN 15804+A2. One Click LCA customers also get a matching dataset with the full EN 15804+A2 impact set, for use in the platform.
Where to get GCD
| When | Where |
One Click LCA users | Available now | Already in your One Click LCA account. You install nothing |
Everyone else | Coming soon | A dedicated GCD web page with download details and terms of use |
What GCD contains
GCD holds 836 generic UK datasets across eight product categories. All figures are cradle-to-gate GWP for the UK.
Product category | GCD datasets |
Concrete and concrete products | 372 |
Finishes, building products and services | 102 |
Metals | 92 |
Bricks, ceramics and glass | 91 |
Aggregates, cement and binders | 74 |
Mortars, plasters and boards | 43 |
Insulation | 35 |
Wood products | 27 |
Total | 836 |
GCD is a UK-adjusted subset of One Click LCA's wider generic data, which holds about 11,000 datasets.
| GCD, UK edition | One Click LCA generic database |
Size | 836 datasets | About 11,000 datasets |
Geography | Adjusted for UK use | Global, localizable to any country |
Source method | Averages of valid UK Environmental Product Declarations (EPDs); modeled bottom-up where no EPDs exist | Averages of EPDs, or modeled bottom-up |
Relationship to ICE | An equivalent for every ICE dataset | Not mapped to ICE |
Impact indicators | GWP; matching full EN 15804+A2 datasets for customers, in the platform only | Full EN 15804+A2 set and other major standards |
How One Click LCA creates and maintains GCD
One Click LCA builds most GCD datasets by averaging third-party verified UK EPDs, the same method ICE used. Where no EPDs exist for a product type, One Click LCA models the product bottom-up.
Averages of published EPDs (primary method): a statistical average of valid, third-party verified EPDs for comparable products in the UK, with outliers excluded. The result represents a typical product in that category.
Bottom-up modeling (where no EPDs exist): built like an EPD, from a bill of materials and manufacturing processes. Inputs come from datasheets, technical documentation, and scientific LCA studies rather than primary factory data. Covers modules A1 to A3 only.
The averaging step produces the full One Click LCA generic dataset, which customers use in the software. Removing every indicator except GWP produces the matching GCD dataset. Each published GCD dataset describes its source data and assumptions.
Example of a dataset for Lightweight concrete blocks from GCD.
The LCA data team behind One Click LCA's database of more than 500,000 datasets maintains GCD with the same process:
Versioned releases: GCD is released as numbered versions, such as GCD 2026, so you can cite the version you used.
Corrections: when a customer or the data team flags a questionable value, One Click LCA investigates the source data, corrects the dataset, and publishes a new version. The dataset description records the change.
Read the full methodology: How One Click LCA creates generic data.
Using GCD in One Click LCA
GCD datasets are already in your One Click LCA account; you install nothing. Find them by filtering for GCD or by searching for "Generic Construction Data."
The search view for GCD in the RICS v2 calculation tool
Tool or workflow | How GCD works there |
Life cycle assessment | Filterable by category, such as concrete, MEP, and steel. Customers also get a matching full EN 15804+A2 dataset for use in the platform |
Life cycle costing | Compatible with One Click LCA's life cycle cost tools |
Circularity and early design | Works with the circularity and early design tools |
BIM tools and imports | Available through the One Click LCA plugins for BIM tools, and selectable when you map materials during import |
Sharing GCD data with clients and partners
End users can download GCD datasets (GWP only) for free, subject to the GCD terms of use, so you can share the data behind your results with people who do not use One Click LCA. GCD is not available for use in other software tools or databases.
This matters if you deliver whole life carbon assessments to clients who want to check each dataset: you cite GCD datasets, and your clients download them. The full EN 15804+A2 versions stay in the platform for One Click LCA customers.
Frequently asked questions
Is GCD free? GCD is free for all end users, including people who are not One Click LCA customers.
Can I get the full EN 15804+A2 indicator set? Yes, if you are a One Click LCA customer. Every GCD dataset has a matching full dataset in the platform.
How accurate and reliable is GCD, and how is it verified? One Click LCA builds most GCD datasets by averaging valid, third-party verified UK EPDs for comparable products, with outliers excluded. Where no EPDs exist, it models the product bottom-up from a bill of materials and manufacturing processes. GCD is released as numbered versions, and issues found between releases are fixed and reissued as new versions. Read the full methodology: How One Click LCA creates generic data.
Have RICS, the GLA, and other schemes confirmed they accept GCD on the same basis as ICE? You can use GCD data in all of these schemes. Whether they will endorse it remains to be seen: they generally refer to averages or examples rather than endorsing specific datasets. The RICS Whole Life Carbon Assessment standard, for example, does not mandate specific ICE datasets, and GCD contains datasets matching each product category assumption in the standard.
Can I get a list of ICE and GCD IFC identifiers, including OCLIDs, for Excel imports? Every dataset has a unique ID, which you can find inside One Click LCA.
How do I find GCD datasets in One Click LCA? Filter by GCD, or search for "Generic Construction Data."
Can I use GCD in another software tool or database? No. The terms of use cover end users only. GCD is not licensed to software or database providers, and you cannot redistribute it through one.
Getting help
Contact your customer success manager or [email protected].