A well-designed extension can completely transform your home — creating more space, improving natural light, and adding long-term value. At G & J Waddell Ltd, we specialise in building high-quality house extensions and home additions across the Scottish Borders, the Lothians and North Northumberland.

With over 65 years of experience, our fourth-generation family business delivers extensions that blend seamlessly with your existing property, whether you’re expanding a traditional cottage, a modern family home, or a period townhouse.

We manage every stage of the build, providing the structural work, joinery, finishing and coordination of all necessary trades. From initial ideas to the final handover, we ensure your extension is completed to exceptional standards.

Our Extension & Home Addition Services

We can design and build a wide range of extensions, including:

• Single-storey and double-storey extensions
• Rear, side and wraparound extensions
• Open-plan kitchen/living extensions
• Timber-frame extensions
• Sunrooms and garden rooms
• Garage and outbuilding conversions
• Structural alterations to create larger spaces
• Roof and attic adaptations as part of extension works

Every extension is constructed using high-quality materials and precise joinery that reflects both the style and the structural needs of your home.

A Seamless Building Experience

Homeowners across the Borders and beyond choose G & J Waddell Ltd for extensions because we provide:

• Clear, honest guidance from the start
• Skilled joinery and construction in-house
• Full project management where required
• Smooth integration of the new space with the existing property
• Reliable, long-standing local reputation

Whether you want to enlarge your kitchen, add a new bedroom, create an open-plan living area or increase natural light with a sunroom, we bring expertise and attention to detail to every stage.