Difference between assignment and novation
Transferring an interest in a construction contract from one party to another can be done by either assignment or novation. The differences are minimal but important to understand, as the assignment of an interest when it could be novated might render one party liable for the contract if the other party is unable to perform their obligations.
Assignment is the right to transfer 'choses in action' defined as 'all personal rights of property which can only be claimed or enforced by action and not by taking physical possession'. This definition includes benefits arising under a construction contract such as right to payment, but not burdens such as the obligation to pay. The definition also includes claims for breach of contract.
A common error is to assume that the right to assign must be agreed as part of a contract, like a novation. Assignment is a unilateral right created by statute, Section 136 of The Law of Property Act 1925 or by the law of equity (law developed by the Chancery Division of the High Court of England and Wales). However, the right to assign can be excluded, or restricted, by contract, for example, it is common in collateral warranties to restrict to one assignment without the written permission of the warrantor.
By comparison, novation is a process in which the contractual rights and obligations are transferred to a third party. The benefits and the burdens can be transferred by a novation agreement, rather than just the benefits as with assignment. In building design and construction, novation normally refers to the process by which design consultants are initially contracted to the client, but are then 'novated' to the contractor.
[edit] Related articles on Designing Buildings
- Alienation covenant.
- Assignment.
- Assignment of choses in action.
- Assignment of debt.
- Collateral warranties.
- Difference between collateral warranties and third party rights.
- Legal and equitable assignment.
- Novation.
- Novation agreement.
- Privity of contract.
- Restrictions on assignment.
- Reverse premium.
- The Contracts (Rights of Third Parties) Act.
Featured articles and news
Homes, landlords. tenants and the new housing standards
What will it all mean?
The Architectural Technology podcast: Where it's AT
Catch-up on the latest episodes.
Edmundson Apprentice of the Year award 2026
Entries now open for this Electrical Contractors' Association award.
Traditional blue-grey slate from one of the oldest and largest UK slate quarries down in Cornwall.
There are plenty of sources with the potential to be redeveloped.
Change of use legislation breaths new life into buildings
A run down on Class MA of the General Permitted Development Order.
Solar generation in the historic environment
Success requires understanding each site in detail.
Level 6 Design, Construction and Management BSc
CIOB launches first-ever degree programme to develop the next generation of construction leaders.
Open for business as of April, with its 2026 prospectus and new pipeline of housing schemes.
The operational value of workforce health
Keeping projects moving. Incorporating unplanned absence and the importance of health, in operations.
A carbon case for indigenous slate
UK slate can offer clear embodied carbon advantages.
Costs and insolvencies mount for SMEs, despite growth
Construction sector under insolvency and wage bill pressure in part linked to National Insurance, says report.
The place for vitrified clay pipes in modern infrastructure
Why vitrified clay pipes are reclaiming their role in built projects.
Research by construction PR consultancy LMC published.
Roles and responsibilities of domestic clients
ACA Safety in Construction guide for domestic clients.
Fire door compliance in UK commercial buildings
Architect and manufacturer gives their low down.






















Comments