De minimis in construction
De minimis is a legal term which is derived from a Latin expression referring to things that are too minimal or unimportant to be considered. It is taken from a longer phrase which translates as ‘the law does not concern itself with trifles’. What this means in practice is that generally the law does not encourage parties to pursue legal action for breaches of rules or agreements where the impact is minimal.
In a construction, the term 'de minimis' often arises in relation to practical completion.
Practical completion is often certified when there are de minimis (very minor) items 'not affecting beneficial occupancy' that remain incomplete and that can be put right without undue interference or disturbance to occupants, i.e. the client is able to take possession of the works and use them for their intended purpose. However, the legal basis for this is not clear, and unless the contract states otherwise, if the works are not complete, practical completion need not be certified.
For more information see: Practical completion.
In relation to party wall issues, ‘de minimis works’ are those that may be so minor that service of a notice under the Party Wall Act would be generally regarded as not necessary. The government’s explanatory booklet gives examples of ‘de minimis works’ as those unlikely to affect the structural strength or support functions of a party structure or cause damage to the neighbour’s side of it, such as re-plastering, shallow chasing for electrical wiring or inserting power sockets, and screws to support shelves, kitchen cupboards, and the like.
In contrast, in the context of money laundering, the Proceeds of Crime Act 2002 effectively created notifiable incidents arising in situations that many would not consider as falling within the definition of ‘money laundering’, and sets no de minimis limit. In other words, a deliberate under-declaration of one’s own tax liability, even of only a few pounds, could be considered a money laundering offence.
For more information, see Money laundering.
NB The glossary of statistical terms, published by the Organisation for Economic Co-operation and Development (OECD), defines de minimis creditors as: ‘Minor creditors that are exempted from debt restructuring to simplify implementation of the Paris Club restructuring agreements. Their claims are payable in full as they fall due. An exposure limit defining a minor creditor is specified in each Agreed Minute.’
[edit] Related articles on Designing Buildings
Featured articles and news
Professional practical experience for Architects in training
The long process to transform the nature of education and professional practical experience in the Architecture profession following recent reports.
A people-first approach to retrofit
Moving away from the destructive paradigm of fabric-first.
International Electrician Day, 10 June 2025
Celebrating the role of electrical engineers from André-Marie Amperè, today and for the future.
New guide for clients launched at Houses of Parliament
'There has never been a more important time for clients to step up and ...ask the right questions'
The impact of recycled slate tiles
Innovation across the decades.
EPC changes for existing buildings
Changes and their context as the new RdSAP methodology comes into use from 15 June.
Skills England publishes Sector skills needs assessments
Priority areas relating to the built environment highlighted and described in brief.
BSRIA HVAC Market Watch - May 2025 Edition
Heat Pump Market Outlook: Policy, Performance & Refrigerant Trends for 2025–2028.
Committing to EDI in construction with CIOB
Built Environment professional bodies deepen commitment to EDI with two new signatories: CIAT and CICES.
Government Grenfell progress report at a glance
Line by line recomendation overview, with links to more details.
An engaging and lively review of his professional life.
Sustainable heating for listed buildings
A problem that needs to be approached intelligently.
50th Golden anniversary ECA Edmundson apprentice award
Deadline for entries has been extended to Friday 27 June, so don't miss out!
CIAT at the London Festival of Architecture
Designing for Everyone: Breaking Barriers in Inclusive Architecture.
Mixed reactions to apprenticeship and skills reform 2025
A 'welcome shift' for some and a 'backwards step' for others.