Construction Company London

We are Proficiency – A bespoke Design and Build Construction Company in London that specialises in exceptional loft conversions, extensions, renovations and basement conversion projects

As one of the leading construction companies in London, we deliver on our clients’ expectation, offering precise project management ensuring quality is always achieved and attention to cost and budget is maintained throughout.

Design and Build in London

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

A design process where we manage a project side by side with the client from the design, planning application (if needed), party wall agreement and finish of the project.

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

Our Process

Building Company In London

Our experienced team has the ability and knowledge to ensure your project is completed to the highest standard. The craftsmanship quality we produce is visible in all our finished projects regardless of the project's size and complexity.

Our aim is to deliver seamless project management and exceptional final result for all the project across south, north and central London we undertake.

design and build LondonOur team of professionals range from Architects, Design consultants, Project managers, Construction manager and Professional builders with extensive industry experience that design and build beautifully bespoke and truly tailored spaces in which our clients envisage themselves living, entertaining, dinging and relaxing. We go far beyond functionality and utility to create spaces to experience life in.

construction contractors londonOur services cater for every client in London and every form of design and build project. Our projects span from the single room re-design and full property renovation – to the most complex of extensions and new builds.

Building companies in London
Our design and build service across north and south London offers a comprehensive, from beginning to end, project service.
We’ll be right there alongside you – from the design consultation stage, through the planning process and party wall application, and onto the construction and completion of your design and build project.
Find out more.

London designAs a North London building company we work hand-in-hand with architects on a daily basis – if you’ve commissioned an architect we’ll adeptly create and construct from their plans and specifications, onto completion, our team of experienced finchley builders will build your project to the high standard.

As our client, we’ll discuss and discover your expectations, visions and goals. Our designs will transform your day to day life, magnificently.

We design living spaces around you – from the first consultation we’ll explore and discover the ways in which you wish to live. From initial design discussion until the final finishing touch – brick by meticulously laid brick.

As an architect, you aren’t merely in the business of producing highly technical drawings. More than this, your job is to make everyday living, beautiful. Ensure that your designs are done justice, with a design and build partner you can trust.

We are entrusted with building the blueprints of industry-leading architects whom demand the same level of exacting standards that they themselves deliver. Working seamlessly alongside you, our team can manage your project end-to-end – with a single point of contact and a skilled team of experts committed to bringing your designs to life. Let’s discuss your project.

London construction company

Putney Arts Theatre Renovation
construction services

News: Thank you letter from Putney Arts Theatre

Proficiency Ltd
663 Finchley Road,
NW2 2HN,

August 18th 2017

Putney Arts Theatre
Ravenna Road
SW15 6AW

Putney Art Theatre

Dear Elisa & Kay

Whilst I know
Marie has already said thank you etc for the amazing refurbishment you have recently completed as well has the incredible generosity in sponsoring the theatre.

We have all been impressed with the quality of the workmanship (and design) and I would like to formally thank you on behalf of the Board of Trustees.

I know you are discussing marketing opportunities with Marie, please do get in touch if you ever need a reference etc. I have also passed your details on to my company's Facilities Manager for the next time we need work doing in our offices.

Kind regards and many thanks again


Bryan Raven
Chairman of the Trustees
Putney Arts Theatre

Our service

Recent Projects


This project is a design and build that is being completed in 2 phases [...]

Beaconsfield, Burkes Close

View Project

Proficiency Sponsor Renovation of Putney Arts Theatre [...]

Our Sponsored Projects

View Project

The homeowners wanted an updated Master bedroom, bathroom and fireplaces [...]

Twickenham, Cambridge Road

View Project

Working Hours

  1. Monday           08:30 - 17:30
  2. Tuesday          08:30 - 17:30
  3. Wednesday     08:30 - 17:30
  4. Thursday         08:30 - 17:30
  5. Friday              08:30 - 17:30



Finchley Office

663 Finchley Road



Battersea Office

Tempo House
15a Falcon Road
SW11 2PJ