Garden Annexe

Independent space. Built properly.

A well-planned garden annexe can create a practical, self-contained space for family, guests, work, or long-term living needs. It can add flexibility to your property without changing how the main home functions.

A garden annexe is more than an extra room at the end of the garden. For many homeowners, it becomes a private space for parents, guests, older children, work, or independent living.

That means it needs to be planned differently from a basic garden office. The layout, insulation, heating, electrics, plumbing, access, storage, and natural light all need to work together. If the space is going to be used all year round, comfort matters just as much as the structure.

OKTO Construction creates garden annexes, granny annexes, garden rooms, and bespoke outbuildings across Berkshire, London, Reading, and wider areas of the UK. We focus on making the space feel solid, comfortable, and connected to the rest of the property, rather than looking like a temporary add-on.

From foundations and frame structure to internal finishes and exterior details, the work is handled with attention to how the annexe will actually be used day to day.