Proficiency Design & Build

Proficiency Design & Build: high-end residential construction in London

Proficiency Design & Build is a residential construction company based in West Hampstead, London, operating since 2011 and presenting itself as a specialist in design and build, residential refurbishment and building services. The company states it has led all phases of high-end construction projects for over a decade, with a focus on artisanal quality and meticulous finishes.

Design and build services

The company covers the full cycle of a residential project: from initial design concepts and planning guidance through to construction and final finishes. Its services include:

• Full home renovations
• Rear and side extensions
• Kitchen extensions
• Basement conversions
• Loft conversions
• New builds
• Architectural services
• Main contracting and project management

The company describes itself as a main contractor and principal contractor in North West London, and offers a dedicated architect service to coordinate project delivery.

Specialisation in heritage and listed buildings

Proficiency presents itself as a specialist in heritage properties and Georgian-style townhouses, with experience in preserving original character and integrating modern living solutions. The company states it manages Listed Buildings, handling permissions and regulations to ensure compliant, high-quality renovations. It also offers local planning expertise for townhouse projects in London, with the aim of streamlining approvals.

Projects and finishes

The website showcases recent projects such as a wrap-around extension on Hillfield Road, a kitchen renovation on Wesbere Road (West Hampstead), an extension and loft conversion on Cambridge Road, and a side extension on Conewood Street (Highbury). The company states it works on ambitious homes in areas such as Maida Vale and Earls Court, combining structural expertise with refined finishes such as skylights, steel frames, exposed timber, bespoke fireplaces and marble tiles.

One of its kitchen extension projects in London appeared on the front cover of KBB Magazine, according to the company itself.

Profile and credentials

Proficiency declares over 14 years of experience building, renovating and designing homes across London, with projects in the south and beyond since 2011. The company states it is fully insured with public and employers' liability, professional indemnity, contractors all risk and high-risk basement works. It is a member of the Federation of Master Builders (FMB), which, it states, independently verifies its craftsmanship, reliability and professional standards.

The company operates from a showroom in West Hampstead and serves areas of North and South London, with coverage of boroughs and postcodes across the north and south of the city.

Location and contact

31 Fortune Green Road, West Hampstead, London NW6 1DU · Phone: 020 7435 6231 · Email: info@proficiencyltd.co.uk · Hours: Monday to Friday: 08:30 - 17:30