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
Check out some of the best features and news from Designing Buildings as well as key stories from around the web.
Accommodating the Victorian and Edwardian working woman. Book review.
Rethinking passive fire protection in design
PFP demands the same level of design rigour as structure or services.
38% of Gen Zs feel safe when a fire door is wedged open.
Stunning images from around the world
Shortlist for CIOB’s Art of Building photography competition.
Guidance for conversion of traditional pre-1919 stone buildings.
Industrial heritage in the Ruhr
A marked difference to the fate of industrial landscapes in the UK.
Communities will be able to build their own clean energy.
Why diversity and inclusion matters for SMEs
CIOB’s D&I Charter shows how practical changes can support long-term growth.
Cut electricity bills to power growth
Coalition sends joint letter to the Chancellor.
Gasholders: a history in pictures. Book review.
Recognition, influence and growth
SocEnv identifies three strategic pillars in new strategy to 2045.
Discover the future of roofing, cladding and insulation.

















