Chelmsford house extension specialists. We design and build single-storey, double-storey and wraparound extensions with full project management and clear pricing. Free surveys.
Expand your home with a beautifully designed house extension built around your lifestyle. Whether you want a larger kitchen, more living space, an additional bedroom or a full ground-floor reconfiguration, Chelmsford Building provides high-quality extensions that enhance comfort and increase property value.
We deliver rear extensions, side extensions, double-storey extensions and wraparound extensions, all completed with structural work, roofing, glazing, electrics, plumbing and finishing — managed expertly from start to finish.
Our team works across Chelmsford, Great Baddow, Beaulieu, Writtle, Boreham, Broomfield, Galleywood and surrounding areas.
Home Extension
Create open-plan kitchen/dining areas, utility rooms, playrooms or larger living spaces.
Add the room you need without the stress of selling, packing and relocating
Well-built extensions regularly add 15%–25%+ to home value.
We tailor layouts to how your family uses the space.
Double-Storey Extensions
Add extra bedrooms, bathrooms or office space with outstanding value per square metre.
Side Extensions
Make use of unused side space to expand kitchens, create utility rooms or add functional storage.
Wraparound Extensions
Combine side and rear extensions for dramatic transformation and total layout flexibility.
Front Extensions & Porches
Improve kerb appeal and practical entrance space.
We understand the layouts, planning expectations and typical home styles across:
Create a warm, fully insulated garden room ideal for working, relaxing or exercising all year round. We design and build stylish outdoor offices, gyms and studios using high-quality materials and modern construction techniques. Quick to install and built to last, a garden room is one of the most effective ways to add extra usable space to your Basildon home.
Transform your unused attic into a bright and practical new living space. Whether you need an extra bedroom, home office or ensuite, our loft conversions include all structural work, insulation, electrics and finishing. We build Dormer, Velux and hip-to-gable conversions designed to maximise light, comfort and property value.
Expand your home with a beautifully built single-storey, double-storey or wraparound extension. From open-plan kitchens to larger living areas and additional bedrooms, we manage the entire process — foundations, structure, roofing, glazing and finishing. Our extensions are designed for long-term durability and seamless integration with your existing property.
Get expert advice on layouts, budgets, planning rules and build options for your Basildon home.