Need a Local Builder?

Beautiful Spaces.

built to last.

At 3D Design & Build, we create exceptional home extensions, loft conversions, new builds and architectural designs across Merton, Wimbledon, Kingston, Richmond and Sutton. Whether you’re planning a full house renovation or a bespoke extension, our experienced team is here to bring your vision to life.

What we do

Expert Installations, Repairs & Custom Building Work Across South West London

We deliver high-quality building services in Merton, Wimbledon, Kingston, Richmond and Sutton – from modern house extensions and loft conversions to bespoke renovations and full new builds.

House Extensions

We can take on both single-storey and multi-storey house extensions. These can add a huge amount of value to your property, while giving you an extra bedroom, lounge or kitchen to enjoy. House extensions can be part of wider house refurbishments or a standalone project.

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Loft Conversions

Many properties have spacious garages and lofts which are under-utilised, constituting extra storage for items that are rarely used. These have a huge amount of potential. They could be turned into an extra bedroom, home office, games room – whatever you can think of!

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Renovations & Refurbishments

We have completed a variety of Kitchen, Bathroom & full home Renovations in and around Sutton & Wimbledon.

We can produce a 3D architectural design of your desired renovation or refurbishment so you can see the vision before we make it a reality.

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Structural Carpentry & Roofing Frameworks

From pitched roof structures to internal stud walls, we specialise in all aspects of structural carpentry. Our team builds strong, regulation-compliant frameworks for new builds, loft conversions, and house extensions across South West London.

Precision Framing & Bespoke Joinery

At 3D Design & Build, our expert carpenters craft precision timber frames and custom joinery for home extensions, loft conversions, and structural builds. Every frame is made to measure, ensuring a solid, long-lasting foundation tailored to your property’s design.

Made-to-Measure Timber Work

We deliver fully bespoke timber features – including staircases, partition walls, roof trusses and more. Whether it’s part of a large renovation or a one-off installation, our joinery work is always built to last and finished with care.

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Building Services You Can Trust

At 3D Design & Build, we specialise in complete home transformations across Merton, Wimbledon, Kingston, Richmond and Sutton. From modern loft conversions to full-scale refurbishments and brand-new builds, we deliver high-quality craftsmanship tailored to your lifestyle.

Start your project today

Loft Conversions
House Refurbishments
New Builds
Extensions
Custom Carpentry
Kitchen & Bathroom Fitting
Roofing & Structural Works
Planning & Design Support
End-to-End Project Management

Start with A Free Quote For Your Project

or call Now: 07881 883 890

About us

Trusted Builders in Merton, Wimbledon, Richmond, Sutton, Kingston & Across South West London

At 3D Design & Build, we deliver high-quality house extensions, new builds, full refurbishments and property conversions – all with an unmatched commitment to service and craftsmanship. Based in Merton, we proudly serve surrounding areas including Sutton, Wimbledon, Richmond and beyond.

Our clients value our honest approach, 24/7 aftercare support, and ability to handle every aspect of a build in-house. From groundwork and bricklaying to electrics, plumbing and final finishes – you only deal with one reliable team from start to finish.

We offer free, no-obligation estimates and never cut corners. Our reputation has been built on trust, attention to detail, and going the extra mile to deliver outstanding results on every project.

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