The National Association of Building Contractors (NABC) is your trusted source for finding accredited builders in the UK. Our logo is a recognized symbol of professionalism and excellence in the home improvement sector. As an association of builders, we vet and endorse builders, ensuring that you can confidently choose the right professional for your project, whether you're exploring prefab extension cost or house extension cost. Discover the NABC difference and connect with trusted and vetted builders today.