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How to find us

Our offices are conveniently located in Hertford, the historic county town of Hertfordshire. We are opposite the Gascoyne Way multistorey car park just off the A414 (eastbound carriageway), between the A1 and the A10. Please enter the postcode SG13 8AE if using SatNav.


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  • Four Rivers House
  • Fentiman Walk
  • Hertford
  • Hertfordshire
  • SG14 1DB
  • Contact us on:
  • Tel: 01992 552 111
  • Fax: 01992 58 12 12
  •  
  • Email us at:
  • simon@gbuild.co.uk

Registered address: 46-54 High Street, Ingatestone, Essex CM4 9DW
Registered number: 4192124

Staff Members

  • simon

    Simon Green FCIBSE

    Director

    Simon created Green Building Design Consultants in 2001 and has established an impressive list of clients. With over 25 years’ experience and a BEng (Hons) in Mechanical & Electrical Building Services, Simon and has a proven track record in delivering technically complex and challenging projects across many sectors including large commercial developments, the banking sector, the education sector and urban regeneration projects. Simon lectures on the M&E aspects of dilapidations and supports dilapidations surveys with expert analysis and advice.

  • joanne

    Joanne Green

    Health & Safety Advisor / Accounts Clerk

    Joanne joined the team in September 2008 with a background as Health & Safety advisor and Quality Co-ordinator for major companies bringing a vast range of skills to the team. Joanne has a BA (Hons) in Business and Quality Management and a NEBOSH National Diploma in Occupational Health and Safety. As well as managing the company’s Health & Safety file, Joanne’s role includes managing accounts and purchase ledger systems.

  • huw

    Huw Davies

    Principal Engineer

    Huw has over 25 years’ experience of producing integrated building services design solutions. Previously a main board director at Waterman Building Services, Huw joined the team in March 2010.  With extensive experience in historic buildings and refurbishment, commercial offices, banking, education and urban regeneration, Huw has managed the M&E element of major projects up to £130m in value. Huw is also working towards fellowship of the Chartered Institution of Building Services Engineers.

  • marion

    Marion Watson

    Office Manager

    Marion joined Green Building Design in 2010 and provides our engineers with the support they need to carry out their roles effectively.

  • andy-pidgeon

    Andy Pidgeon

    Principal Engineer

    Andy joined Green Building Design in December 2016, after being with Atkins for over 10 years. Andy has over 20 years’ experience as an electrical engineer in the Building Services industry and has also worked with Faber Maunsell, Capita Symonds and Buro Happold. Andy has worked on various projects and has extensive knowledge and experience in various sectors, including residential, education, commercial, industrial, rail and airports, taking projects from conceptual design through the various design stages, and onto to practical completion. He has also extensive experience in condition and pre-acquisition surveys. Andy is a member of CIBSE and the IET, and he is working towards his chartership with the IET.

  • graham

    Graham Bennett

    Mechanical Design Engineer

    With over 40 years’ experience in the Building Services industry with Faber Maunsell, Capita Symonds and Lorne Stewart, Graham has a vast knowledge within private, commercial and healthcare sectors. He joined Green Building Design Consultants in 2009 and has worked on the successful design of numerous projects and developments. Graham is a member of Health Engineering & Estates Management (IHEEM) and is also working towards CIBSE chartered membership.

  • kin

    Kin Hook Lee

    Mechanical Engineer

    Kin managed the design of several projects in Malaysia after gaining his Diploma in Mechanical Engineering and receiving two outstanding Scholastic Achievement Awards. Kin came to the UK to further his studies and achieved a B.Eng (Hons) in Mechanical Engineering. He joined Green Building Design Consultants in August 2007 and is applying his expertise in CAD design, Hevacomp modelling, mechanical design, CFD modelling and plant selection to many high profile projects.

  • mark

    Mark Bennett

    Electrical Engineer

    Mark is a time-served electrician with over 25 years’ experience. Having worked as a foreman managing a team of electricians on several major complex projects, Mark joined Green Building Design Consultants in 2011 for a change in career direction to become a design engineer. Mark has since gained a strong understanding of the Amtech electrical design package and applies his on-site knowledge to project design, making the valuable link between the design and installation aspects of fit out work.

  • jaejae

    Jaejae Dimmock

    Mechanical Engineer

    Jaejae joined the company in 2014 as a Graduate Mechanical Engineer. In addition to his engineering skills, he is proficient in Autodesk Revit, Solidworks and Thermal Elements Analysis and is now turning his career to Building Services Design. He is aiming for CIBSE membership in the medium term and in the long term wishes to achieve Chartered Engineer status.

  • rob

    Robert Wilson

    Electrical Engineer

    Joining the company as a graduate engineer in 2005, having completed his Master’s Degree, Robert has developed into an experienced engineer, in particular excelling in the area of light and lighting design. He has managed several projects including office and school refurbishments, fit-outs, and design of services for an environmentally friendly office. Robert is an affiliate member of CIBSE, highly skilled in AutoCad, Amtech and Dialux, and has achieved a Diploma in Light and Lighting from the Lighting Education Trust though distance Learning at Southbank University.

  • chelsie

    Chelsie Graffato

    Apprentice Building Services Design Engineer

    Chelsie joined Green Building Design Consultants in September 2013 on a four year apprenticeship and is working alongside other engineers on a number of projects. She is currently studying with the aim of gaining a BEng in Building Services Engineering.

  • george-penn

    George Penn

    Apprentice Design Engineer

    George joined Green Building Design Consultants in September 2016 on a four year apprenticeship and is working alongside other engineers on a number of projects. He is currently attending the City of Westminster College and is working towards achieving a BTEC Level 3 Diploma in Construction and the Built Environment (BSE).