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Bespoke composite garden rooms built in Slough, Berkshire. Garden offices, annexes, gyms & studios. Fully insulated, installed in under a week. Free consultation.

Looking for a garden room in Slough? Garden Rooms Online designs, builds, and installs bespoke composite garden rooms across Slough and the surrounding Berkshire area. With excellent transport links to London and a diverse range of housing, Slough is a growing market for home-working garden offices and additional living space.
Slough has a wide mix of housing — from terraced streets in the town centre to larger family homes in Cippenham, Langley, and Wexham. Many homeowners here are looking for practical, affordable ways to add space without moving house or building an expensive extension.
Our composite garden rooms are the answer. Zero maintenance, fully insulated, and built in under a week — genuinely usable 365 days a year, whether as a garden office, home gym, or self-contained annexe.
Slough's housing mix means we design garden rooms for all garden sizes. Our compact rooms (from 2.3m x 2.3m) are ideal for the terraced properties around the town centre, while our larger builds suit the family homes in Cippenham and Langley. Every room is designed to maximise your available space — without dominating the garden.
We cover all of Slough (SL1, SL2, SL3) and nearby areas including Cippenham, Langley, Upton, Wexham, and Britwell.
Most garden rooms in Slough fall under permitted development and don't require planning permission — as long as they're single-storey, under 2.5m tall (if within 2m of a boundary), and cover no more than 50% of your garden. We'll advise on this during your free consultation and can handle any planning applications if needed.