Proficiency is one of the building companies London that specialises in single and double story house extensions. Our team of builders in London helps home owners to construct their dream loft. As a leading construction company in London we strive for premium quality which is why we are a member of considered construction scheme.

We are a construction company London that helps with all types of building work. If you would like to visit one of our building site, contact us to see our site project manager.