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Your one stop home improvement solution.


Over the last 30 years and more, HET have managed the design and build of over 1500 home improvements including extensions, loft conversions, garden rooms and renovations.  We’re proud of our reputation of providing unrivaled customer service, which is just one reason why so many of our clients recommend us to family and friends.  Our work takes us all over Hertfordshire, including Hitchin, Harpenden, St Albans and Letchworth. If you would like to see the full list, you can view the areas covered page.


Our unique approach is based entirely around your needs.  You can choose our team to project manage the whole process, from the initial design of your project, through to the build and completion, right down to the last coat of paint. Or you can choose the services which suit you.  The simple staged process enables you to make informed decisions every step of the way. 

Through our experience in home extension project planning, we have designed software to enable accurate build cost forecasts, important to help our clients to avoid unforeseen costs and expenses. We believe we are the only home improvement company to offer this facility, and we are very happy to pass the benefit on to you, our clients.  You will see stories on our news page regarding how people fail to budget correctly for home improvements, but at HET we have the skills to help you plan your project budget efficiently.


By working with us, you can be confident that we’ll find the best solution for you and your family, creating the living space you need to suit your lifestyle, and of course, your budget.

HET Project types
HET Process
Why Choose HET
Home Extension Team

Contact us today on 01462 440099 for our Hitchin office or 01727 743943 for our St Albans office to arrange a free initial consultation and see how you can fulfill your home’s potential. 


Winners of the local civic award, HET Hitchin is a member of the Considerate Constructors Scheme.

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