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Builders & Landscapers
in Norfolk & Suffolk

Transforming your home, inside and out.

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We’re a family-run business that has the best of both worlds.

Originally two businesses, these two sets of brothers have teamed up to cater for all of your landscaping and building needs. Together, we offer building and landscaping services for domestic and commercial spaces across East Anglia.

Team photo of builders and landscapers at East County Developments, Norfolk

A recent project description/title

Building services

Our experienced team of professionals brings expertise in a wide range of construction services, from new builds to extensions and renovations. We approach every project with meticulous attention to detail, ensuring that every aspect is carefully planned, executed, and managed.

Whether you're a domestic homeowner or a commercial landlord, we understand your unique requirements and strive to exceed your expectations with our craftsmanship and commitment to excellence.






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Landscaping services

Transform your outdoor space with our expert landscaping services. Our skilled team of landscapers bring creativity and attention to detail to every project, designing and building beautiful gardens, stylish patios and so much more. Working with homeowners and commercial landlords in Norfolk and Suffolk since 2004.




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Browse our recent work in Norfolk and Suffolk. Get in touch to find out more.

Barn conversion.
New build construction.
Car port.
Bespoke build.

Bespoke patio design.

Garden design.

Landscape gardening.

Garden design.

Stylish fencing.

Garden office and paving.

Meet the team.

We’re a family-run business and we’ve got the best of both worlds. Originally two businesses, these two sets of brothers have teamed up to cater for all of your landscaping and building needs.

A floor fitter is standing in front of a fenced green field in Norfolk.
Stephen Thornton

I started working in the building industry after studying brickwork at Norwich City College. I worked with my father doing hard landscaping and building. I then left to work with a building company that focused on heritage buildings.

In 2014 I trained as a floor fitter learning different aspects of flooring and then in 2020, I joined my brother James at J Thornton Paving and Landscaping. We have always worked well together and it was great to get back to landscaping again.

Jack Keen

After leaving school I was fortunate enough to get an apprenticeship with a very reputable company in Norwich learning carpentry. After 5 years I achieved my NVQ level 1, 2 & 3 in carpentry. I have always taken great pride in my work and really enjoy what I do.

In 2014 my brother Grant and I started G & J building we completed jobs from as little as hanging one door right through to a complete new-build house. Throughout my career so far I have become an all-round builder who specialises in carpentry and kitchen fitting.

A builder specialising in extensions and renovations is standing in front of a fenced green field in Norfolk.
Grant Keen

When I left school I went to college learning bricklaying while working for a small Norwich-based building company. I was lucky enough to work for a company that allowed me the time to perfect my trade and learn all avenues of building work. Throughout my time with them, I completed my qualifications in bricklaying, I also learned roofing to a high standard.

In 2014 I started G & J Building with my brother Jack, specialising in extensions and renovations. We wanted to expand and grow our business so in 2023 we merged with J Thornton Paving and Landscaping and now we have a complete team that offers a complete service.

A landscaper is standing in front of a fenced green field in Norfolk.
James Thornton

After leaving school I started working for my dad doing building and landscaping whilst attending Norwich City College to get my bricklaying qualifications. I have spent my whole working career in the building industry and from a young age I've always had a passion for hard landscaping. There is a massive amount of job satisfaction in what we do and I still enjoy every job.

In 2018, I set up J Thornton Paving & Landscaping and in 2020 my brother Stephen joined me. We have always worked closely with Grant and Jack as we are all good friends and work really well together so in 2023 we merged two companies to become East County Developments.

Let's work together.

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