Garden Rooms · Horsham

Garden Rooms in Horsham

Hand-built offices, studios and gyms for gardens across Horsham, Southwater, Broadbridge Heath, Rudgwick and the surrounding RH12 and RH13 villages.

Horsham gardens, and what they need

Horsham splits neatly into two kinds of plot: mature Victorian and Edwardian gardens close to the town centre with narrow side access and big trees, and newer estate gardens out at Southwater and Broadbridge Heath with open lawns and shallow topsoil over clay.

The first needs sectional build and careful root protection. The second needs proper drainage and a designed setting so the building does not sit marooned in the middle of a lawn. We handle both from survey through to planting.

Bespoke timber garden room built in a Horsham gardenInsulated garden office interior in Horsham with built-in desk lightingHorsham garden room with glazed doors opening onto a stone terrace

What we build most in Horsham

Home offices are still the most common brief, followed closely by gyms and music or art studios. A growing number of Horsham clients ask for a multi-use building: desk at one end, gym at the other, shower room between them.

  • Bespoke garden offices with data, acoustic lining and glare-controlled glazing
  • Insulated year-round garden studios for art, music and therapy practice
  • Garden gyms with reinforced flooring and ventilation
  • Guest and family rooms with shower rooms and kitchenettes

Planning permission in Horsham District

Horsham District Council applies the standard permitted development rules. Most rooms qualify at single storey, under 2.5m high within 2m of a boundary, covering no more than half the garden and not used as a separate dwelling.

Conservation areas in the town centre and around the older villages, plus listed properties, are the exceptions - we check before quoting and handle any application.

Where we build around Horsham

Horsham town, the RH12 and RH13 villages and out towards Billingshurst and Rudgwick are all a short run from our Mid Sussex yard.

  • Horsham
  • Southwater
  • Broadbridge Heath
  • Rudgwick
  • Billingshurst
  • Warnham
  • Slinfold
  • Barns Green

Horsham garden room questions

How much does a garden room cost in Horsham?
From around £25,000 for a compact insulated room finished ready to use, rising to £35,000-£50,000 for a larger room with more glazing, a terrace or a shower room.
Do I need planning permission in Horsham?
Most garden rooms are permitted development. Conservation areas in central Horsham, the High Weald AONB to the east and listed buildings are the usual exceptions, and we check your address before quoting.
How long does the build take?
Two to four weeks on site, with six to ten weeks of design and lead time beforehand.
Can you get materials down a narrow side passage?
Yes. Older Horsham gardens frequently have restricted access, so we size the sections to the passage and build in place rather than craning a finished box over the house.

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Thinking about a Horsham garden room?

Download the brochure for sizes and finishes, or call and we will give you an honest read on your garden.