house extension builders

Extension Builders Mayfair

Are you after high-end quality? Then you need to hire the best builders in Mayfair. So your project is done using the best materials. With Proficiency Design & Build, you get a qualified team of planning specialists, engineers, architects, interior designers and management team to turn your dreams into reality. So, what are your home extension needs?

High end Mayfair extension builders
extend your home

Classic Mayfair house extensions

The best option compared to moving out or purchasing a new home? A house extension! Do you need space to accommodate your visiting guests or maybe your growing family? From kitchen extensions, a loft conversion, a relaxing lounge, or a fully equipped gym, all you need is the extension builders in Mayfair. With their team of professional home builders, you could even opt for complete refurbishments of your entire property! What better way to achieve your desired dream home?

Bespoke home extensions
property extension
Luxury extension in Mayfair

Design and Build Service

End-to-end construction Company

Years of experience, expertise, skills, dedication, and diligence are some of the traits when it comes to the Mayfair W1 area team. With customer satisfaction being a priority, rest assured you’ll get the desired results. The chosen project manager who shall be your single point of contact ensures that there’s efficient project management. Whether it’s a single, double, wrap, or a side return extension, the local builders in Mayfair stick with you from the beginning to the end of the project. Some of the successfully completed projects include those in Fulham, Balham, and South London.


open plan kitchen extension
The Avenue, Queen's Park

Rear and side extension
View Project

navy blue kitchen
Islington, Canonbury

Rear Extension
View Project

Cambridge Road, Twickenham

Extension & Loft Conversion
View Project

Hillfield Road, West Hampstead

Wrap Around Extension
View Project

Cost of extending a home

The cost of having an extension varies from one project to the other. With the team in Mayfair W1 area, working with the given budget is one of the things they do to avoid any unforeseen expenses that may arise. You get a team that delivers a quality end product upon completion of the project. It is also important to note that the project manager supervises every step of the project, thus ensuring effective project management. They’re also your single point of contact so rest assured you’ll get detailed briefing every step of the way.

Why proficiency builders

You get a professional team that’s FMB fully insured and NICEIC approved contractors to handle your project. Regardless of the nature of your project, it will still be handled with utmost diligence. With the experience, expertise, and construction craftsmanship of the team, your projects will be in able hands. Once the project is done, you’re issued with a 15-year structural guarantee and a completion certificate.

Building a room

Request a FREE quote

Reach out today to talk to any of our extension specialists or get a free consultation on your extension project.


This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.