Rear extension with aluminium bifold doors opening onto a garden patio
Family-run builders since 1991

Stunning loft and house extensions in South West London

Complete building services from start to finish

Wimbledon · Surrey · SW London

Extension and loft conversion specialists

Are you looking for extension and loft conversion specialists in South West London or Surrey to help you add space and value to your home?

Regal Builders are leading loft conversion and house extension builders, working throughout Surrey and the surrounding areas. Established over 30 years ago, our well-respected, family-run company offers quality loft conversions, house extensions and property refurbishments for all types of properties.

With over three decades in the building trade, our highly-experienced team are able to take on a huge variety of building projects, both simple and complex and complete them on time and within budget. Customer satisfaction is our number one priority and we are proud of the fact that many people come to us on personal recommendations. We pride ourselves on our unrivalled reputation for exceptional workmanship and customer service at highly competitive rates.

Open-plan kitchen extension with island and skylight
What we do

Our services

  • Lofts

    Dormer, hip to gable, roofline and mansard conversions.

  • Extensions

    Single and double storey, side return and kitchen extensions.

  • Refurbishments

    Kitchens, bathrooms and complete home renovations.

  • Design Service

    In-house design, drawings, planning and building regs.

An efficient and cost-effective way to create space

Many local households struggle for storage or living space and as families grow and their needs change and expand, homeowners start to think about possible alternatives, like moving house. Moving is expensive, which is why loft conversions and house extensions can make financial and practical sense.

We can provide loft or attic conversions, single or double storey extensions, bungalow conversions and all manner of property renovations. We are passionate about great design and premium quality builds and our tradesmen are dedicated to ensuring you receive the best finish possible. A good extension or loft conversion will feel like it has always been there – and it will bring you great pleasure for many years to come!

Single storey rear extension with roof lights
How we work

A bespoke and personal service

We offer a completely bespoke service, from quotation, through to design, build, finish and aftercare. We believe that house extensions, loft conversions and refurbishments should not only be practical and enhance your lifestyle but they should blend seamlessly with the rest of your property, complementing the style of your house. Our tradesmen have a keen eye for detail and we will not only complete your conversion, refurbishment or extension to a high standard but we can advise on tailor-made aspects of design, including staircases and lighting.

With years of experience in the trade, we will work with you to take all your ideas and requirements on board before starting any building work. Family values are at the heart of our business and we promise a personal and stress-free approach – and we will always arrive on time in the morning with a smile on our faces! Every project we undertake has a dedicated project manager who will be on-site every day to answer any questions and queries. We will always strive to ensure your home continues to function with as little disruption as possible. We will always resolve any problems that may crop up along the way using our wealth of experience and skills to deal with them in an efficient manner.

We also do not take on more work than we can manage, so every job has our complete commitment, from start to finish. We maintain exceptional standards and all work comes with a guarantee of five years for your peace of mind.

Recent projects

Case studies

View all case studies
  • Wimbledon

    Clarence Road

    A terraced family home in Wimbledon gains a light-filled rear extension, new kitchen and a remodelled loft with a bigger dormer.

  • Wimbledon

    Cottenham Park Road

    A hip to gable loft conversion followed by an L-shaped side return extension with a new open-plan kitchen.

  • Wimbledon

    Haydon Park Road

    Four years of work on a period double-fronted home: a hip to gable conversion, a large rear extension and a loft en-suite.

Let us transform your unused space

If you would like further help or advice about your extension, loft conversion or property refurbishment, please call us now on 01296 291 352.