About NextGen Garden Rooms

NextGen Garden Rooms designs and installs premium composite garden buildings across the UK. We use the Leka GRP composite system — a true zero-maintenance alternative to timber or metal — so your garden room performs as well in year 20 as on day one.

Our Story

We’re part of the NextGen Group — the authorised fabricators of the Leka composite system. That means we don’t just install garden rooms; we manufacture the components ourselves. No middlemen. No supply chain guesswork. Just the highest-quality product, supplied and installed by one team.

What We Stand For

GRP composite construction with a 40-year structural warranty. No rot, no rust, no annual maintenance.

Most installs complete in 2–4 days. No concrete, no excavation, no weeks of disruption.

Industry-leading insulation means you use the room every day — not just spring and autumn.

Free, no-obligation survey and a clear price. No high-pressure sales tactics.