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What are the Foundations to Your Remediation header 2

What are the Foundations to Your Remediation?

22 February at 10:00-12:00 GMT, Online event

Earthworks, or the use of engineered fill, is now a frequent activity as sites need to be prepared before house building can take place.

This online Brownfield & Regeneration Network event will explain the development, application, and contents of NHBC's newly published addition to the NHBC’s Standards, Chapter 4.6 - Engineered Fill and will delve into why the chapter was needed, how it was developed, what it covers, and how it will be implemented.

Get an overview of each part of the chapter to indicate the requirements for earthworks on housebuilding sites going forward. It will provide a valuable insight into the range of quality and standard of documentation NHBC commonly receives to discuss common pitfalls, and examples of observed good practice.

The event will also provide an opportunity to ask questions to members of the NHBC Land Quality Service team, who co-authored this new chapter, and collectively have a long background in earthworks from various engineering sectors, including the housing building industry.


Become a member and your whole company can register for our online events for free.

If you are a Member, please login to register for free.

Limited free places are available to developers and land-owners. Please email to confirm your eligibility and register for a free place.

If you can't make the date, book your ticket and you'll receive the recording to watch on-demand.


10.00 Welcome from Environment Analyst

10.05 Opening address from the Chairperson

Steven Odunmbaku, Principal Technical Specialist, NHBC

10.10 Presentation on Chapter 4.6 ‘Engineered Fill’ 

Andy Clark, Specialist Geotechnical Engineer, NHBC 

10.50 Q&A

11.00 Short Comfort Break

11.10 NHBC Insights: Land Quality Service and supporting Case Studies

Carla Stephen, Specialist Geotechnical Engineer, NHBC

11.40 Q&A

12.00 Close of event

Meet the speakers

Steven Odunmbaku Principal Technical Specialist, NHBC


Steven Odunmbaku, Principal Technical Specialist, NHBC

Steve is a Chartered Civil and Structural Engineer with over 35 years’ experience in consulting – designing industrial, commercial and residential developments and infrastructures using the most common materials in UK and Ireland. Steve also has Local Authority experience as designer and AD-A compliance checker, before joining NHBC in 2011. Since joining NHBC, Steve has held a number of roles within Technical Operations and Standards, Innovations and Research (SIR) departments, where he currently leads in the development of a number of chapters within the NHBC Standards including the new Chapter 4.6 – ‘Engineered fill’. Steve is a member of a number of BSI committees and working groups, as well as a member of the CROSS panel. Steve contributed to the recent update of IStructE’s publication – ‘Subsidence’.

Andy Clark Specialist Geotechnical Engineer, NHBC


Andy Clark, Specialist Geotechnical Engineer, NHBC 

Andy is a Chartered Civil Engineer with over 25 years’ of experience of construction, consulting and now here at NHBC. His career started with Barr Construction in the mid-1990s to 15 years in consulting in the ground engineering departments of Jacobs and Atkins in Glasgow. Andy has since been at NHBC for over 7 years within the Land Quality Service team. Andy has developed a broad range of geotechnical experience with a particular interest in earthworks and ground improvement. Andy also has extensive experience with major infrastructure projects at the design and build stage such the at the M74 Completion in Glasgow, Borders Railway project from Edinburgh to working on the Shetland Gas Plant with the French oil and gas company TOTAL.

Carla Stephen Specialist Geotechnical Engineer, NHBC


Carla Stephen, Specialist Geotechnical Engineer, NHBC

Carla is a Chartered Geologist with over 20 years’ experience in contracting and consulting, Carla has a broad range of industry experience working on large projects in the UK and USA, with a particular interest in earthworks for residential developments. Carla has been with the Land Quality Service team at NHBC since 2021. Carla is focused on working with NHBC’s clients and house builders to highlight geotechnical risks and suitable remedial options on a site-by-site basis. She is a strong advocate of the benefits of early and continual engagement and communication with the whole project team. She has a breadth of experience in the following sectors: housing, commercial, flood mitigation, infrastructure, gypsum mining and education including working on projects such as the Aberdeen Western Peripheral Route and the Moray Flood Alleviation Schemes.

About NHBC

NHBC Land Quality Service offer early engagement services and technical appraisal to those remediating or preparing land for future residential development allowing clarity on accepted foundations proposals for future Buildmark Warranty.


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