Cost reporting
Cost reporting is a process used to inform a client (or other party) about the magnitude of a construction project’s predicted, or actual cost. This can be expressed either in absolute terms or as a variance compared to the project budget.
Cost reports are typically prepared by a cost consultant (such as a quantity surveyor) and updated regularly (perhaps monthly), to keep the client informed and to help them and the project team control costs.
Typically, cost reports will evolve through the life of the project, developing in detail and accuracy as more information becomes available about the nature of the design, and then actual prices are provided by specialist contractors, contractors and suppliers, and actual costs incurred.
A cost report will generally include all the costs incurred by the date of the report, where they are known, a forecast of the costs likely to be incurred during the rest of the project, in so far as these can be foreseen and estimated, and risk allowances for the possibility of unforeseeable costs. Contingencies to cover these risks are often expressed in terms of percentages. The percentages applied are at their greatest in the early stages of the project when there are the greatest number of possible risks, but they can then be reduced as better particulars about the project become available and some risks have passed or been overcome.
It is important to be clear what costs will be included in cost reports. For example, the client may have costs that, whilst they are directly related to the project, they would prefer to account for them themselves. This might include; land acquisition costs, specialist plant or equipment, furniture, construction contracts outside of the main contract and so on.
In the absence of a single, standard type of cost report format, or specific formatting requirements by the client, most cost consultants will develop their own format for cost reports.
[edit] Related articles on Designing Buildings
Featured articles and news
We're expanding our collaborative mission by launching DB Intelligence, an exclusive market research advisory panel. Built environment professionals can now get paid to share their expertise on industry trends, products and services.
Panel members receive direct financial incentives for participating in research projects like short surveys, 1-2-1 interviews and focus groups. Register today to shape the future of the construction sector.
Planning condition discharge in England and Wales
A brief exoplanation from a building compliance expert, with further links.
Overheating guidance and tools for building designers
Guidance for dealing with element of building fabric control that have increasing importance.
Shading for housing, a design guide
From the Good Homes Alliance and British Blind and Shutter Association.
UK Standard Skills Classification (SSC)
A shared framework for describing skills needs.
Social media ban consultation comes to close
CIOB urges UK Government to consider social media’s role in careers guidance in ban debate.
The latest of eight Skills England apprenticeship units
The addition of battery manufacturing welcomed by ECA with a warning about the risks of fast-tracked apprenticeship units.
Building Control Independent Panel final report
A precis of a key report led by Dame Hackitt with full recommendations and link to the government response.
Building Safety recap April, 2026
A short and longer run-through of the month, with links to further information and sources.
CIAT May 2026 briefing.
From medieval scribes to modern word art.
ECA welcomes crackdown on late payment and push for clean energy, whilst CIOB seek fixed cladding removal timeframes.
Cyber Security in the Built Environment
Protecting projects, data, and digital assets: A CIOB Academy TIS.
Managing competence in the built environment
ITFG publishes new industry guide on how to meet the ICC principles.
The UK's campaign to reduce noise pollution: Mythbusting, articles and topic guides.




















