Quantum
In its broadest sense, the word "quantum" refers to an amount or quantity of something.
In the construction industry, the term "quantum" may refer to the calculation or assessment of the amount or extent of something, typically related to costs, quantities of work, or damages. It is often used in the context of legal and contractual disputes, where parties may disagree on the amount of compensation or payment due for work completed, variations, delays, or damages.
Common contexts in which the the term "quantum" may be used include:
- The calculation of financial compensation owed due to breaches of contract, delays, or other issues that cause financial loss.
- "Quantum Meruit" - a legal principle meaning "as much as is deserved," used when there is no agreed contract price, and the payment is determined based on the value of the work completed.
- In disputes, quantum assessments are critical in determining the financial impact of issues like delays, variations, or incomplete work.
- A quantity surveyor, who specialises in the assessment and calculation of the quantum of work or damages.
It may also be used to refer to quantum technologies such as quantum computers, quantum encryption, quantum optics and so on.
[edit] Related articles on Designing Buildings
Featured articles and news
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.
Setting Expectations on Competence Management
Industry Competence Committee.
New Scottish and Welsh governments
CIOB stresses importance of construction after new parliament elections.
The sad story of Derby Hippodrome
An historic building left to decay.
ECA, JIB and JTL back Fabian Society call to invest in skills for a stronger built environment workforce.
Women's Contributions to the Built Environment.
Calls for the delayed Circular Economy Strategy
Over 50 leading businesses, trade associations and professional bodies, including CIAT, and UKGBC sign open letter.
The future workforce: culture change and skill
Under the spotlight at UK Construction Week London.
A landmark moment for postmodern heritage.






















