Builders in Merton
House Extensions, Refurbishments & Loft Conversions
Looking for skilled, reliable builders in Merton, Morden, Mitcham, Colliers Wood or South Wimbledon? At 3D Design & Build, we offer a complete range of building and renovation services, including beautiful house extensions, modern refurbishments, and expertly crafted loft conversions — all delivered with exceptional quality, professionalism, and attention to detail.
Our experienced team works across Merton and surrounding areas, helping homeowners create stylish, functional spaces tailored to their unique needs.
🏠 House Extensions in Merton
Unlock the full potential of your home with a bespoke house extension designed to seamlessly match your property’s style. We specialise in:
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Rear, side, and wraparound extensions
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Single- and double-storey builds
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Open-plan kitchen/dining spaces
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Full management of planning permission and building regulations
🛠️ House Refurbishments in Merton
Bring your home up to modern standards or breathe fresh life into tired interiors with a professional refurbishment. Our services cover:
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Redesigned layouts for better functionality
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Kitchen and bathroom renovations
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Plastering, tiling, flooring, and decorating
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Plumbing, electrics, and heating system upgrades
🧱 Loft Conversions in Merton
Transform your unused loft space into a bright, versatile new room. We design and build:
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Dormer, mansard, and hip-to-gable loft conversions
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Custom stairs and smart storage solutions
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En-suite bathrooms for luxury finishes
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Complete project management from plans to final decoration

🛡️ Why Choose 3D Design & Build?
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Trusted local builders serving Merton, Morden, Mitcham, Colliers Wood & South Wimbledon
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Fully qualified, insured, and experienced team
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Clear, transparent pricing with detailed quotes
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Comprehensive in-house service for a hassle-free experience
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High-quality workmanship with guarantees for your peace of mind
📞 Get a Free Quote Today
Thinking about a house extension, refurbishment, or loft conversion in Merton, Morden, Mitcham, Colliers Wood or South Wimbledon? Contact 3D Design & Build today for a free, no-obligation quote, and let’s start transforming your home.




Message Us
Get In touch below. Ask Any Question or Start a Free Quote
Call Us
07881 883 890
Office Location
South West London
Open Hours
3ddesignandbuild2@gmail.com