House extensions in Sussex

Make the most of your home and expand your living space with a high-quality extension, built to your requirements by our experienced team. We are a large and well-structured building contractor that works closely with customers throughout the South East on extensions of all types and sizes. We have the expertise and skills to successfully transform your plans into a fantastic new addition to your home, ensuring it meets all your requirements and exceeds your expectations. A quality extension will add extra space and value to your home, allowing you to accommodate your growing family or adapt to changing circumstances. We have extensive experience working on extension projects and are ideally positioned to achieve your desired result without unnecessary hassle or disruption.

Focusing on quality – expert extension builders in Sussex

Once your plans are in place, we’ll manage your project through to its completion, taking the hassle out of the entire process. Due to our expertise and experience, we’ll carry out the work on your project efficiently and in a manner that ensures a high-quality result. By taking responsibility for each stage of your extension build, we’re able to plan ahead and carry out thorough preparation that will pay off as the project progresses. Our team is committed to quality at every stage of the process, refusing to compromise a successful outcome by cutting corners. Instead, we make forward-thinking decisions that wouldn’t be possible without involvement throughout the project.

Tell us about your project

To find out how we can help with the project you have in mind, talk to a member of our team. You can call us on 01342 618 618 or you can email

Do you need planning permission
for extensions in Sussex?

Whether or not your extension requires planning permission will depend on its size. Many extensions in will fall within the permitted development rights of Sussex property owners, avoiding the need to seek planning permission. However, if you have a large extension in mind, such as if you’re reworking and expanding the ground floor of your property to add an open plan kitchen, permission may be needed. We’ve worked on a wide range of different home extension projects will be able to help you understand exactly what is required for the design you have in mind.

Orangery extensions in Sussex

Have you considered adding an orangery to your property in Sussex? Many homeowners overlook this option when deciding to extend their property. However, an orangery is a fantastic way to create a new living space that takes full advantage of natural light and views out onto your garden. Developments in modern glazing mean that orangeries can be used throughout the year, remaining warm in winter and cool in the summer. Our team can build eye-catching orangeries that make a huge difference to the ways you live within your Sussex property, creating a functional space that perfect for entertaining and relaxing.

Working professionally

Our professional team will carry out their work safely and responsibly, making sure to respect your home at all times. We’ll cover your possessions to protect them from accidental damage and will adjust our working practices to minimise mess and avoid unnecessary disruption. Our team members know that they represent us and understand how to conduct themselves within your home, making sure that they are well presented and polite throughout the building work for your project. Customer interaction is a key focus of ours – we’ll keep you regularly updated while we’re on site and you’ll be able to ask us questions over the phone whenever you need to.


Let’s take your project to the next level.
Call 01342 618 618 or email to find out more about our services. We are always happy to answer any questions.

Managing projects successfully

We precisely monitor our progress using our digital job management system to make sure that we have a transparent and accurate record of your project. By logging every single development, we’ll keep track of how your extension build is progressing and will make sure that we’re completing our work as efficiently as possible. Adopting a digital approach allows us to precisely manage the timings of your project, letting us organise our workload and keep you in the loop with regular updates. We carefully manage the projects we take on to make sure that we can maintain a continuous presence on site and avoid delays or interruptions. This approach ensures that we achieve the best possible result for our customers, every single time.

What sets us apart from other extension builders in Sussex?

We’ve built an excellent reputation for the quality of the home extensions we’ve built for customers in Sussex. Our team’s attention to detail will ensure that you receive an exceptional addition to your existing house. Whether you are interested in a side extension, garage conversion, or orangery, we have the skills to realise your vision. Unlike many other extension builders, we understand how to create a fantastic new living space that will enhance your property and produce results that you can’t wait to share. We work within a tolerance of millimetres, transforming properties in Sussex with high-quality extensions that are perfectly tailored to their owners’ needs.

Contact Harringtons Group

Let’s take your project to the next level. Call 01342 618 618 or email to find out more about our services. We’re always happy to answer any questions.