- Project plans
- Project activities
- Legislation and standards
- Industry context
Last edited 02 Feb 2018
When agency is formed, the principal authorises the agent to undertake certain acts for them and on their behalf, and they are bound by the acts of the agent. For example, one type of agency is between an employer (principal) and employee (agent).
Agency can be created by:
- Express agreement (oral or written).
- The principal’s conduct.
The legal doctrine of estoppel prevents the principal from rejecting or denying the existence of agency where they have previously established it.
- Employer's agent - an agent acting on behalf of a client as the contract administrator for design and build contracts.
- Estate agent - acting on behalf of a client for the sale or rental of properties, businesses or land.
- Sub-agents - usually appointed on large construction projects to manage a specific part of the works or a specific package of work.
- Client's agent of client's representative - responsible for managing a project on behalf of a client.
 Find out more
 Related articles on Designing Buildings Wiki
Featured articles and news
Emerging cost contracts
Connecting infrastructure with housing.
All about E-procurement
Winners and finalists in CIAT's architectural technology awards.
Their survival against the odds is a remarkable feature of the City’s history.
Immersed, charmed and inspired on conservation’s front line.
About JCT...and the rest
The Centre Building, London School of Economics
Architecture course essentials
Enhancing employee health and wellbeing