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Construction Company in London

Proficiency is a Design & Build Construction Company in London that specializes in residential Loft Conversions, Extensions, Renovations and Basement Conversion projects.

Proficiency excels in transforming any type of properties into styled elegance in line with the vision for your own home, delivering a high quality finish.

Our experienced team has the ability and knowledge to ensure your project is completed to the highest standard regardless the complexity, whether is a loft conversion or a complete property renovation, the craftsmanship quality we produce is visible in all our finished projects.
Our aim is to deliver seamless project management and exceptional final result for all our projects.

Proficiency can work with any property renovation from kitchen and bathroom refurbishment, full house renovations to more complex single and double story extension and new builds.

As one of construction companies in London we serve all areas within the M25

At Proficiency we offer two types of packages for our services:

  • A design/build process were we manage a project side by side with the client from the design, planning application (if needed), party wall agreement to the construction and finish of the project.


  • Or if you have an architect, we will be happy to undertake the construction of your project through the completion, according to your architect's plans and specifics.


Feel free to navigate through our website to find out more about the Services we offer or visit our Gallery page to check out some of our recently completed projects.

Construction Services

loft conversions london

Loft Conversions

From loft conversion design right through to loft building we offer the end to end solution as well...

House extensions

House Extensions

At Proficiency we pride ourselves about our house extensions, from complete re-builds to...


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