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Aegis -
Clerk of Works

Clerk of Works Services

A Clerk of Works provides an independent site-based presence on behalf of the Client, monitoring construction works and providing quality control throughout the project. The role focuses on observing the works as they progress and checking that construction is being carried out in accordance with the design, drawings and specification.



Regular site inspections can help identify defects, workmanship issues and departures from the agreed requirements at an early stage. Findings can be recorded and reported to the relevant members of the project team, helping Clients and Project Managers maintain oversight of construction quality and address issues as the works progress.



Clerk of Works services can support a range of construction projects, including building works, mechanical and electrical installations and civil engineering works. The level and frequency of site involvement can be tailored to the requirements of each project.



Working alongside the wider project team, a Clerk of Works provides an additional focus on the quality of construction being delivered on site, helping Clients to monitor whether the works are progressing in line with the agreed requirements.


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Our Clerk of Works services

enevo's Clerk of Works support can be applied to different types of construction and installation work, depending on the project and agreed scope.

<p>Site inspection of building works to monitor construction quality, workmanship and materials against the relevant drawings, specifications and project requirements.</p> Icon

Building Works

Site inspection of building works to monitor construction quality, workmanship and materials against the relevant drawings, specifications and project requirements.

<p>Inspection of M&E works to help identify installation issues, incomplete works or areas that require further investigation against the relevant project information.</p> Icon

Mechanical and Electrical Installations

Inspection of M&E works to help identify installation issues, incomplete works or areas that require further investigation against the relevant project information.

<p>Construction inspection support for civil engineering works, with site observations focused on the requirements and quality expectations established for the project.</p> Icon

Civil Engineering Works

Construction inspection support for civil engineering works, with site observations focused on the requirements and quality expectations established for the project.

<p>Regular inspection can provide a consistent view of workmanship and construction quality as the project develops, helping identify issues before they become more difficult to address.</p> Icon

Quality and Workmanship Inspections

Regular inspection can provide a consistent view of workmanship and construction quality as the project develops, helping identify issues before they become more difficult to address.

<p>Where issues are identified, findings can be recorded and reported to the relevant project team members so that they can be considered and addressed through the appropriate project process.</p> Icon

Defect Identification and Reporting

Where issues are identified, findings can be recorded and reported to the relevant project team members so that they can be considered and addressed through the appropriate project process.

<p>Site inspection of building works to monitor construction quality, workmanship and materials against the relevant drawings, specifications and project requirements.</p> Icon

Building Works

Site inspection of building works to monitor construction quality, workmanship and materials against the relevant drawings, specifications and project requirements.

<p>Inspection of M&E works to help identify installation issues, incomplete works or areas that require further investigation against the relevant project information.</p> Icon

Mechanical and Electrical Installations

Inspection of M&E works to help identify installation issues, incomplete works or areas that require further investigation against the relevant project information.

<p>Construction inspection support for civil engineering works, with site observations focused on the requirements and quality expectations established for the project.</p> Icon

Civil Engineering Works

Construction inspection support for civil engineering works, with site observations focused on the requirements and quality expectations established for the project.

<p>Regular inspection can provide a consistent view of workmanship and construction quality as the project develops, helping identify issues before they become more difficult to address.</p> Icon

Quality and Workmanship Inspections

Regular inspection can provide a consistent view of workmanship and construction quality as the project develops, helping identify issues before they become more difficult to address.

<p>Where issues are identified, findings can be recorded and reported to the relevant project team members so that they can be considered and addressed through the appropriate project process.</p> Icon

Defect Identification and Reporting

Where issues are identified, findings can be recorded and reported to the relevant project team members so that they can be considered and addressed through the appropriate project process.

What does a Clerk of Works do? Image

What does a Clerk of Works do?

A Clerk of Works is primarily concerned with the quality and standard of construction being delivered on site.

Working to the scope and basis of their appointment, a Clerk of Works can inspect materials, workmanship and completed elements of the works, compare construction against drawings and specifications, identify defects or areas requiring attention, and report findings back to the Client and relevant project team members.

The role can help provide an independent perspective during construction rather than relying solely on information supplied by the contractor.

Typical areas of inspection can include:

  • Workmanship and construction quality
  • Materials and components being used on site
  • Construction against approved drawings and specifications
  • Installation and completed works
  • Defects, incomplete works and areas requiring correction
  • Progress and significant site observations
  • Quality issues that could lead to rework or further project problems
  • Records and evidence of inspection findings

The precise responsibilities of a Clerk of Works depend on the appointment and project requirements. The role does not replace the responsibilities of the Client, contractor, Principal Contractor, Building Control body or other statutory dutyholders.

How Our Clerk of Works Service Works

01

Understand the Project Requirements
We establish the relevant project information and the basis of the Clerk of Works appointment, including drawings, specifications and other information needed to understand what is expected to be delivered.

02

Inspect the Works

Site inspections are undertaken at appropriate stages of construction to observe workmanship, materials, installations and completed elements of the works.

03

Record Findings

Observations are recorded so that quality issues, defects, incomplete works and other relevant matters can be clearly communicated to the project team.

04

Report to the Client

Findings are reported to the Client and relevant project representatives, providing a clear record of observations and areas requiring attention.

05

Support Ongoing Quality Monitoring

Further inspections can be used to monitor progress and consider whether previously identified issues have been addressed, subject to the agreed scope of the appointment.

Clerk of Works and NEC Supervisor

Contract-Specific Supervision and Inspection

A Clerk of Works and an NEC4 ECC Supervisor are related but distinct roles.

Where an NEC4 Engineering and Construction Contract requires a Supervisor, the Supervisor has specific contractual functions including testing and inspection, notifying defects and issuing the defects certificate. The role is governed by the NEC contract and does not simply amount to general site inspection.

Where required, enevo can discuss the appropriate inspection or supervisory arrangement for the project and contract. The specific availability and scope of NEC Supervisor services should be confirmed as part of the appointment.

Supporting Quality Throughout Construction

A Clerk of Works can form part of the wider project team, working alongside Clients, Project Managers, contractors, designers and other consultants.

The role is focused on construction inspection and reporting. It does not transfer the legal or contractual responsibilities of other project participants.

For example, under CDM 2015, the Principal Contractor is responsible for planning, managing, monitoring and coordinating health and safety during the construction phase on projects involving more than one contractor. A Clerk of Works does not replace that dutyholder.

Similarly, Clerk of Works inspections should not be confused with statutory Building Control inspections. Where Building Control approval or inspection is required, the relevant Building Control body retains its statutory role.

This distinction allows the Clerk of Works to provide an additional layer of project-side inspection without blurring responsibilities.

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Supporting Quality Throughout Construction Image

Aegis Services, now part of enevo

Aegis Services joined enevo in 2026, bringing further construction health and safety, CDM, Clerk of Works and risk management experience into the group.

The Aegis team has supported clients across the North West since 1995, with experience spanning thousands of projects and more than 600 clients. This experience now sits alongside enevo's wider Building Safety, Building Compliance and Building Control capabilities.

This joined-up expertise allows clients to access health and safety support alongside other specialist services where their projects or organisational requirements extend into wider built-environment compliance.

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Aegis Services, now part of enevo Image

Frequently asked questions?

What is a Clerk of Works?

A Clerk of Works is a construction inspection professional appointed to monitor the works on behalf of the Client. The role can include inspecting workmanship and materials, checking construction against project information, identifying issues and reporting findings to the Client and relevant project team members.

When should a Clerk of Works be appointed?

A Clerk of Works can be appointed where a Client wants independent inspection and quality monitoring during construction. The appropriate timing and level of involvement will depend on the project, construction programme, scope of works and Client's requirements.

What does a Clerk of Works inspect?

The scope can include workmanship, materials, installations, completed construction elements, defects and construction against drawings and specifications. The exact inspection requirements depend on the project and the basis of the appointment.

Does a Clerk of Works replace Building Control?

No. A Clerk of Works provides Client-side construction inspection and reporting. This is separate from the statutory functions carried out by the relevant Building Control body.

Does a Clerk of Works replace the Principal Contractor?

No. The Clerk of Works does not take on the Principal Contractor's legal responsibilities under CDM 2015. The Principal Contractor remains responsible for planning, managing, monitoring and coordinating health and safety during the construction phase where the role applies.

Can a Clerk of Works inspect M&E works?

Yes, where M&E inspection forms part of the agreed service scope and the appropriate technical capability is available. enevo's source service information specifically identifies mechanical and electrical installations alongside building and civil engineering works.

Can enevo provide an NEC Supervisor?

NEC4 ECC Supervisor appointments have specific contractual functions and should be considered separately from general Clerk of Works inspection. Where this service is required, the scope and availability should be confirmed for the particular project and contract.

How can we help you with your project?

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5 Star Rating

Harry gave me excellent advice and clear understanding on what BREEAM means as well about the specific accredited assessing required by professionals like Harry.

Angela Singh

5 Star Rating

Very efficient and professional service. Cant recommend enevo enough, glad I chose them for my project.

William Brannon

5 Star Rating

Very impressive on all aspects of energy calcs. Responsive and cost competitive. Highly recommended

Nick Spencer

5 Star Rating

enevo are always helpful, friendly and efficient in carrying out SAP calculations for our clients.

Lizzie Hicks

5 Star Rating

enevo were fantastic from start to finish and helped make each step of the project run smoothly. I would highly recommend and we will definitely be using again, if needed in the future.

Rees Doyle

5 Star Rating

We have always found enevo to provide an excellent service in the preparation of SAP Calculations and Assessments as well as EPC Certificates for projects that they have worked on for us. They are also reasonably priced so we would certainly recommend them to anyone looking for this type of service.

Martin Booker

5 Star Rating

Used enevo from start to completion of our recent project of 2No. new builds. Services included SAP/EPC and property air testing. Great service, understanding of requirements and cost. Person friendly company and good with communication.

Mark Radcliffe

5 Star Rating

Very efficient, personal, professional service, with a quick report turnaround. Highly recommended if you're a self-builder trying to navigate the complexities of the latest regulations.

Edward Broadhead

5 Star Rating

Always efficient and prompt service, enevo are an asset to my company, having used their services on multiple developments I wouldn't hesitate to recommend them.

Mac Chappell

5 Star Rating

Great service with a fast turnaround. Communication was excellent throughout. Richard the engineer was polite and professional. Will certainly be using enevo again.

ECO PROPERTY DEVELOPMENTS LTD

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