Understanding Dutyholder Roles and Responsibilities Under the Building Regulations
Updated: 1 day ago
The Building Regulations are not simply requirements for Building Control to check at the end of a project. Responsibility for achieving compliance sits with those who commission, design and carry out building work.
Since 1 October 2023, Part 2A of the Building Regulations 2010 has established specific duties for those involved in building work in England. These requirements were introduced to provide greater clarity and accountability throughout the design and construction process and to ensure that Building Regulations compliance is properly considered from the outset of a project.
The dutyholder framework applies to clients, designers and contractors, with additional responsibilities for the Principal Designer and Principal Contractor.
For anyone planning or undertaking building work, understanding these responsibilities is essential.
What is a Dutyholder?
A dutyholder is a person or organisation with responsibilities under Part 2A of the Building Regulations 2010 in relation to building work.
The principal dutyholder roles are:
The Client
The Principal Designer
The Principal Contractor
Designers
Contractors
A person or organisation may undertake more than one dutyholder role where they have the appropriate competence and are able to properly fulfil the relevant duties.
The duties are intended to ensure that Building Regulations compliance is considered throughout the project rather than being treated solely as a Building Control matter.
The Client
The client is the person for whom the building work is carried out.
The client's responsibilities are particularly important because they establish the arrangements under which the project is designed and constructed.
Under Part 2A, the client must make suitable arrangements for planning, managing and monitoring the project, including allocating sufficient time and resources, so that the building work complies with all relevant requirements.
The client must also make suitable arrangements to ensure that:
Design work is carried out so that, if constructed in accordance with the design, the building work would comply with the Building Regulations.
Building work is carried out in accordance with the relevant requirements.
Designers and contractors cooperate with one another.
Appropriate information is provided to designers and contractors.
The necessary dutyholder appointments are made.
Reasonable steps are taken to ensure that appointed persons are competent to carry out the work for which they are appointed.
The client therefore has an important role in establishing the systems and resources necessary for Building Regulations compliance.
What if the client is a domestic client?
A domestic client is generally a client for whom the project is being carried out other than in the course or furtherance of a business.
The Regulations contain specific provisions for domestic clients.
Where the relevant appointments have not been made, the Regulations can place certain responsibilities on the designer or contractor in control of the relevant work.
This means that domestic clients should not assume that being a homeowner removes the need to consider the dutyholder requirements.
Where appropriate, the Building Control team can help identify the information and appointments required as part of the Building Control process, although responsibility for fulfilling the dutyholder requirements remains with the relevant dutyholders.
The Designer
A designer is a person who, carries out design work or arranges for or instructs another person under their control to carry out design work.
Designers have responsibilities under Part 2A regardless of whether they are the principal designer.
A designer must take all reasonable steps to ensure that their design work is planned, managed and monitored so that, if the building work were constructed in accordance with the design, it would comply with all relevant requirements of the Building Regulations.
Designers must also:
Cooperate with the client and other dutyholders.
Provide information needed by others to fulfil their duties.
Take account of other relevant design work.
Communicate information necessary to achieve compliance.
Ensure that their own design work is within their competence.
The designer therefore has a direct responsibility for the compliance of the design work they undertake.
The Principal Designer
Where there is more than one contractor, or it is reasonably foreseeable that more than one contractor will work on the project, the client must appoint a Principal Designer and a Principal Contractor in accordance with Part 2A. The appointments must generally be made before the construction phase begins, subject to specific provisions for higher-risk building work.
The Principal Designer is the designer with control over the design work.
Their role is to coordinate and manage design matters so that Building Regulations compliance is properly considered across the project.
The Principal Designer must:
Plan, manage and monitor design work.
Coordinate design work so that the building, if constructed in accordance with the design, complies with the Building Regulations.
Cooperate with the client and other dutyholders.
Take reasonable steps to ensure that designers comply with their duties.
Ensure that designers provide the information needed by those carrying out the construction work.
Liaise with the Principal Contractor regarding design information and Building Regulations compliance.
Ensure that design work is undertaken by people with the appropriate competence.
The Principal Designer is therefore not simply the person who produces the architectural drawings. Their role is to coordinate the design process and ensure that Building Regulations compliance is properly managed across the design team.
The Contractor
Contractors also have direct responsibilities under Part 2A.
A contractor must ensure that the building work they carry out, and the work carried out by workers under their control, is planned, managed and monitored so that it complies with all relevant requirements.
Contractors must:
Carry out work in accordance with the Building Regulations.
Cooperate with the client, designers and other contractors.
Provide relevant information to other dutyholders.
Ensure that workers under their control have the appropriate skills, knowledge, experience and behaviours for the work they undertake.
Ensure that building work is properly planned and managed.
Communicate issues that may affect compliance.
A contractor cannot simply rely upon the Building Control body to identify problems during inspections. The contractor has their own legal responsibilities for the work they undertake.
The Principal Contractor
The Principal Contractor is the contractor appointed by the client to control the building work.
Their responsibilities include planning, managing and monitoring the construction phase so that the building work complies with the Building Regulations.
The Principal Contractor must:
Coordinate and manage the construction work.
Ensure that contractors under their control carry out work in accordance with the relevant requirements.
Cooperate with the Principal Designer and other dutyholders.
Provide information required by the design team.
Ensure that suitable arrangements are in place for managing Building Regulations compliance.
Ensure that people carrying out the work have the appropriate competence.
Communicate relevant changes and issues affecting compliance.
The Principal Contractor should therefore have effective systems in place for managing Building Regulations compliance throughout the construction phase.
Competence
Competence is a fundamental part of the dutyholder framework.
Part 2A requires dutyholders to have the appropriate skills, knowledge, experience and behaviours necessary to carry out their functions.
Where the dutyholder is an organisation rather than an individual, the organisation must have the necessary organisational capability.
Those appointing designers and contractors must take reasonable steps to establish that the people they appoint are competent for the work they are being asked to undertake.
This means that simply appointing someone because they are available or because they have undertaken similar work previously may not, by itself, demonstrate that the person is suitable for the particular project.
The complexity, scale and risks associated with the work should be considered when determining the appropriate competence required.
Cooperation and communication
One of the important principles running throughout Part 2A is cooperation.
Dutyholders must cooperate with other dutyholders to the extent necessary to allow everyone to fulfil their respective responsibilities.
For example, designers need to provide appropriate information to contractors, while contractors need to communicate construction issues that may affect the design or compliance of the building.
Good communication between the client, designers, contractors and Building Control can therefore play an important role in identifying and resolving potential compliance issues.
Changes during construction
Building projects do not always proceed exactly as originally designed.
Changes to materials, products, construction details or design can potentially affect compliance with the Building Regulations.
Dutyholders should therefore ensure that changes are properly considered and communicated.
Where a change affects Building Regulations compliance, the relevant designer and contractor should assess the implications and provide appropriate information.
Changes should not simply be implemented on site without consideration of their effect on the compliance of the building.
The role of Building Control
It is important to understand the distinction between dutyholder responsibilities and the role of Building Control.
An RBCA provides an independent Building Control function. This includes assessing relevant plans and information and carrying out inspections of building work in accordance with the applicable statutory requirements.
However, the RBCA does not take responsibility for the client's, designer's or contractor's duties under Part 2A.
Building Control is not intended to replace the designer, contractor, Principal Designer or Principal Contractor.
In particular, an RBCA does not provide continuous supervision of the construction work or take responsibility for the contractor's workmanship.
The dutyholders remain responsible for ensuring that their own work and functions comply with the Building Regulations.
This distinction is important because Building Control inspections should not be interpreted as transferring responsibility for compliance away from the project dutyholders.
Completion and declarations
The dutyholder responsibilities continue through to completion of the project.
For applicable projects, completion procedures include declarations relating to the duties undertaken by the Principal Designer and Principal Contractor.
The Building Regulations provide for completion information to include confirmation that the relevant dutyholders have fulfilled their duties under Part 2A.
This reinforces the principle that responsibility for Building Regulations compliance sits with those undertaking the design and construction work, rather than being transferred to Building Control.
Why the Dutyholder framework matters
The dutyholder provisions are designed to create clearer lines of responsibility throughout the construction process.
Instead of Building Regulations compliance being viewed simply as something that Building Control checks, the framework establishes responsibilities at each stage:
Client → Design Team → Principal Designer → Contractors → Principal Contractor → Building Control
Each has a defined role, and effective cooperation between them is essential.
For clients, this means selecting suitable professionals and allowing sufficient time and resources for compliance.
For designers, it means ensuring that designs properly address the Building Regulations.
For contractors, it means ensuring that the work is properly planned, managed and constructed.
For Building Control, it means independently assessing and inspecting the work within the scope of the Building Control function.
How Meadows & Turner can help
At Meadows & Turner Building Compliance Ltd, we recognise that Building Regulations compliance is a shared responsibility.
Our role as a Building Control provider is to provide an independent and professional assessment of the relevant design information and construction work, while maintaining a clear distinction between our Building Control responsibilities and those of the project dutyholders.
We work with clients, designers, Principal Designers, contractors and Principal Contractors to help ensure that the information required for Building Control is provided and that potential compliance issues are identified during the project.
Our approach is based on:
Independent Building Control assessment
Clear communication
Professional plan assessment
Appropriate site inspections
Early identification of potential compliance issues
Clear identification of outstanding information or requirements
A professional and proportionate Building Control service
Understanding your responsibilities
Whether you are a homeowner, developer, designer, contractor or commercial client, understanding your responsibilities under Part 2A is an important part of delivering compliant building work.
Building Regulations compliance is a shared responsibility, and effective cooperation between all parties can help ensure that requirements are considered from the earliest stages of design through to completion.
If you are planning a construction project and are unsure about the Building Control process or the information required, Meadows & Turner Building Compliance Ltd can discuss your proposed project and explain how our Building Control service can support you.
Meadows & Turner Building Compliance Ltd
Professional Building Control services for domestic and commercial projects.
Please note: This article provides general information regarding the dutyholder provisions in Part 2A of the Building Regulations 2010 as applicable in England. It is not a substitute for reviewing the legislation applicable to a particular project. The duties and procedural requirements can vary depending upon the nature and circumstances of the building work, including whether higher-risk building work is involved.