building project in north london

Builders North London

Proficiency is residential builders in North London, specialising in building works like loft conversion, house extensions, basement conversion and house renovations across London. With over 10 years of experience in the UK Building industry, you'll feel confident and completely at home with us at Proficiency Design and Build.

North London extension
extend your home

House Extensions Add Property Value

Proficiency's construction company features an extensive team of pre-contract and contract managers, design consultants, project managers, interior designers and professional builders in North London all waiting to work for you. As a team, we have over 25 years of combined experience in designing and building beautiful homes.

Proficiency's local builders specialise in transforming residential properties based in the North London area and beyond bringing our expertise, professionalism, and experience straight to your doorstep. Once we've sat down and mulled over the details of your project. We'll get to work on your agreed timeframe and with our bespoke project management service we will be there to help you every step of the way

home extensions
south west London property extension
house extension

Design and Build Service

Building company in North London

We offer a full range of professional building services in North London, each one tailored for you. From designing and building your dream kitchen extension, converting your loft or basement, or new builds. No building project is too big or too small. Even if you need just RIBA certified architectural service.

Proficiency's North London Builders team will transform your property into your dream home. We cover everything from the initial design, planning permission, approval, right through the build, and completion of your project.

Whether you want modern or traditional, Proficiency builder will transform your property, creating a perfectly vibrant, bright home tailored to your own personal needs and preferences. So, if you need somewhere extra to relax or entertain, we're the people to come to. We've worked on Edwardian, Victorian, Georgian & Modern homes throughout North London. There is nothing we can't do.

Let our builders in North London take care of everything. Our service is fully comprehensive, covering everything from your initial design ideas briefing right through to the completion of your project.

We can take care of:

  • Architectural drawings / designs
  • Planning applications
  • Building control
  • Project cost estimation
  • Detailed architectural CAD / 3D designs
  • Construction
  • Interior designs

Completed Building Work in North London

Ringwood Avenue, Muswell Hill

Refurbishment and extension

house extension in north London
Islington, Canonbury

Rear Extension

kitchen extension
Cambridge Road, Twickenham

Extension & Loft Conversion

renovation in north London
Hillfield Road, West Hampstead

Wrap Around Extension

Cost-Effective home Extension

Our extension builders in North London provides personalised home improvement services for all tastes and budgets. The cost of an extension depends on the type of property extension you are looking to build. Should a new kitchen extension include unit installation? Do you plan to build single-storey or double-storey extensions? Are you looking for garage conversion or loft conversion to accommodate the growing need of your family? Whatever the reason you may have for your extension projects, you can always be confident that building an extension to your house will increase the property's value.

House renovations Services

Looking to spruce up your old bathroom to something more luxurious? Perhaps you want to turn your extra bedroom into a liveable space for your growing family or modernise your new home. With the help of Proficiency interior design team, you can implement bespoke furniture and other design elements to make the space welcoming. With property maintenance aftercare, you can trust Proficiency to get it done.

Family run business

We are fully insured by the Federation of master builders (FMB) and dedicated to meeting our customers' changing needs. With the growing happy testimonials, Proficiency has become one of the leading building companies in North London. Every house renovation project comes with a 15-year guarantee on all structural works.

Building a room

Get a Free Consultation

So next time you're thinking of carrying building works to upgrade your North London Georgian townhouse or just adding an extra room to your modern living space, make sure you get in touch with Proficiency first.


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