Diagram showing wave interference, with labeled constructive and destructive interference points, using colored wave patterns.

EXTENSIONS

More Space, More Comfort, More Home

A well-designed extension transforms the way you live. Whether you’re growing your family, upgrading your lifestyle, or simply craving more room, we create spaces that feel seamless, natural, and beautifully integrated with your existing home. Our honest, upfront approach means you always know what to expect with no surprises, just solid workmanship and thoughtful planning.

We understand the trust you place in us when we work on your home. That’s why we take every detail seriously, from the first sketch to the final finish. With DA Build, your extension becomes more than extra square footage and we transform it into a new space to love for everyday living.

Home renovation by DA Build in London, Surrey and Greater London.

Home extension by DA Build in London, Surrey and Greater London.

Create your dream home right where you are.

Garden room by DA Build Construction work in London, Surrey and Greater London.

Home renovation, new flooring by DA Build in London, Surrey and Greater London.

We get to know your goals, your space, and what you want to achieve.
A detailed breakdown of the project, materials, and costs so you know exactly what to expect.
Once you're happy with the plan, we lock in the design and prepare for the build.
A small upfront payment secures your project and confirms your place in our schedule.
You receive a clear, structured timeline outlining each stage from start to finish.

Our Process

A digital illustration of multiple layered wave-like structures in black, white, green, gray, and purple, with a purple arrow and a red line crossing the waves.

Book an initial meeting

MAKE YOUR HOME YOUR favourite place to be