
Bespoke designs for every project
Seamless integration with existing structures
Expert craftsmanship across all extension types
What will you do with your new space?
Extensions and conversions are the perfect way to maximise your living space without the hassle of moving. Whether you’re dreaming of a larger kitchen, a new home office, or a stylish outbuilding, J.B Viking Building Ltd has the expertise to make it happen. From single-storey extensions to bespoke garage conversions, we bring your vision to life with precision and care. Our team works across Harlow, Loughton, Essex, Hertfordshire, and London, ensuring every project is tailored to your needs. With our commitment to quality and attention to detail, you can trust us to create a space that’s not only functional but also beautifully designed.

Time to go higher with our single and double storey extensions!
Building up by a single or double storey can be a great solution for those who are restricted by lack of horizontal space or do not wish to eat into the garden. Whilst both options will expand your living space, there are various factors that will determine which may be best for your property, and we're here to help you identify those. Listening to your goals, we'll walk you through the options, and even offer support in obtaining planning permission to ensure your expansion goes off without a hitch.
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Need a different approach?
Side return extensions: Ideal for those with side passages, this cost-effective approach sees us fill the gap between properties, a popular choice for those looking to maximise space without impacting the garden. This flexible design option is also great when adapting kitchens and other living spaces.
Wrap-around extensions: This extension type wraps around two sides of the property (usually the sides and rear), creating an 'L' or 'U' shape. This offers more flexibility when it comes to the extension, whilst enhancing light entry to your new and approved space.


Bespoke conversions
Unfortunately, not everyone has the space to expand. In these cases, J.B Viking Building Ltd can help you optimise the floor space you already have, to help you get more from your property cost-effectively. A garage sitting accumulating rubbish, a dusty loft; we take these tired old spaces and give them a new lease of life. By doing so, we not only give you the space for the life you want, but could enhance the property's value. Serving Harlow, Loughton, Essex, Hertfordshire, and London, we’re committed to helping you create a home that’s as functional as it is beautiful.