Research and downloadable data

Show the evidence, not just the answer.

Our research pages keep the source date, comparison basis and limitations beside the numbers. The calculator remains a planning tool, and the downloadable table lets other people inspect the inputs.

September 2026 edition · CSV available

UK plastering and rendering cost benchmark.

Nine dated market observations, normalised into one inspectable table. Use it to choose the right comparison for a project—not to turn unlike scopes into a false national average.

Publication standard

Reproducible and bounded.

  1. Name the source and observation date.
  2. Keep unlike project scopes separate.
  3. Publish a machine-readable download.
  4. State what the data cannot decide.