Construction cost vs project cost
Construction costs form part of the overall costs incurred during the development of a built asset such as a building. Very broadly, construction costs will be those costs incurred by the actual construction works themselves, and on some projects may be determined by the value of the contract with the main contractor. Construction costs may also include costs that might not in themselves be considered literal construction costs (hard costs), such as fees, profits, overheads, and so on.
Many projects will also include costs that it is not possible to determine when the construction contract is awarded (such as prime cost sums and provisional sums), and there may be construction works that are awarded by the client outside of the main contract (such as fitting out the interior, minor alterations to the completed works, installation of equipment, and so on).
In addition, the contract is likely to allow for the contract sum to be adjusted as a result, for example, of variations to the works, claims for loss and expense, or fluctuations (a way of dealing with inflation on large projects that may last for several years).
For more information see: Construction cost.
There will also be much wider project costs that are incurred by the client, in addition to the cost of any construction costs.
These wider project costs might include:
- Land or property acquisition.
- Commissions.
- Statutory fees.
- Consultant fees directly associated with the development.
- Some fixtures and fittings.
- Project insurance, inflation, taxation and financing.
- Internal costs directly associated with the development.
Once the project is operational, there will be other ongoing costs:
- Wages.
- Utilities.
- Maintenance and repairs.
- Utilities.
- Insurance.
- Security.
- Rent.
- Sales.
- General and administrative expenses.
For more information see: Operational cost.
It is very important when planning projects and allocating budgets and responsibilities to be very clear where different costs are allocated and who is responsible for monitoring and controlling them.
[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.
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.
Guide to ISO 19650 for Architecture Firms (2026)
A user gives their low down.
A UK training and membership provider for mould remediation professionals.
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.
Independent NSI and BAFE study exploring how organisations are changing the way they buy fire safety services.
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.

















