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Garden office project · Swift Unlimited

A team garden office overlooking farmland by Swift Unlimited

A garden office in Warrington for a business leaving a serviced office lease, with room for up to eight desks, a wide picture window framing the farmland behind and a cloakroom of its own.


Published 8 November 2026 · 3 minute read · Written by The Garden Room & Annexe Guide

Rendered garden office by Swift Unlimited with Anthracite Grey sliding doors, a recessed side door and fields beyond
Swift Unlimited  team garden office, Warrington

This garden office in Warrington by Swift Unlimited was designed as an alternative to commercial office space. The client’s serviced office lease was coming to an end, and with the new terms far more expensive, they asked Swift Unlimited for a building at home that could house several workstations and give staff and visiting clients the same professional setting.

It is a clever design in that it solves that need, but it also creates a high-specification building with a versatile space that could be used for other things in the future.

At a glance

  • Size: 6.3m x 5.1m and 2.5m tall, with an open office of around 25sqm inside and a cloakroom.
  • Built for: a business replacing a serviced office lease, with room for staff and visiting clients.
  • Construction: Structural Insulated Panels (SIPs), aluminium-framed double glazing and air conditioning, built in four weeks.
  • Finishes: render with Anthracite Grey doors and windows outside; plastered walls and ceiling and a herringbone floor inside.
  • Company: Swift Unlimited, designing and building it in close collaboration with the client.

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The setting

Designed around a farmland view

The building sits at the end of the garden, where a railing fence is all that separates the lawn from open farmland. The design makes the most of that countryside setting. A wide picture window on the end wall frames the farmland view from the desks, and large sliding doors along the side lead out onto the garden.

A glazed door on the side allows for easy everyday access. It is set into a recessed corner of the building, sheltered by the roof overhang.

Swift Unlimited garden office interior with sliding doors to the lawn and a wide picture window framing farmland
The picture window  framing the farmland view
The office

Room for up to eight desks

Inside, the office measures 5.6m by 4.4m, around 25sqm, and Swift Unlimited sized it to take up to eight full desks. The desks are grouped towards the picture window and the back wall, leaving the area beside the sliding doors free for a comfortable seating area looking out over the garden.

The Swift Unlimited team work out the electrical specification as part of the design. In a project like this, that means planning for the needs of the computers from the start, with double sockets spaced around the walls where the desks sit and a data point, so there are no trailing cables. They also handle the final connections to the house. A grid of twenty recessed, dimmable LED downlights gives even light across every desk.

Desks with twin monitors in the Swift Unlimited team garden office, under recessed downlights and beside a picture window
The workstations  planned around the computers
Inside

A finished interior

The walls and ceiling are plastered and decorated, and a herringbone floor runs the length of the room. Air conditioning provides year-round temperature control.

Spaniel on a seat by the sliding doors of the Swift Unlimited garden office, with herringbone floor and the lawn outside
The seating area  beside the sliding doors

A very stylish cloakroom means staff and visitors don’t need to use the facilities in the main house. Deep blue tiles run to shelf height below a tropical wallpaper, and a glass-block window brings in daylight while keeping the room private.

Cloakroom in the Swift Unlimited garden office with deep blue tiles, tropical wallpaper and a glass-block window
The cloakroom  for staff and visitors
The build

SIPs construction and a rendered finish

Swift Unlimited design each building in close collaboration with the client. The core structure is built from house-quality Structural Insulated Panels (SIPs), which create a highly insulated shell, coupled with high-spec aluminium-framed double-glazed doors and windows.

The exterior can be finished in whatever the client prefers, and finishes can be mixed where that is the vision. Here, render offers a crisp contemporary look paired with Anthracite Grey doors and windows, and matches the colour and look of the house.

The building stands 2.5 metres tall. That is the height limit for a garden building within two metres of a boundary under Permitted Development, which mattered here as the office sits close to the neighbour’s boundary.

Cleared site for the Swift Unlimited garden office, between the lawn, a lattice boundary fence and a wheat field
The site  before the build
The company

Four weeks from lawn to office

Swift Unlimited completed the build in four weeks, at a cost of around £70,000 to £75,000. For the client, that replaced an ongoing office rent with a building of their own.

Swift Unlimited garden office during the build, with the SIPs shell and roof up and openings for the glazing
During the build  the SIPs shell

“The space feels professional, comfortable, and perfectly suited to our business,” the client says. “We now have plenty of room for staff, clients, and day to day working, all while adding real value to our home. I only wish we had done it sooner.”

With an insulated shell, air conditioning and a cloakroom of its own, the building is not tied to its first use, and could serve the household in other ways if the business moves on.

Planning a garden office?

Learn more about Swift Unlimited

To find out more about Swift Unlimited’s bespoke garden rooms, annexes and extensions, visit swiftorg.co.uk. You can contact the team on 01625 875 588 or at support@swiftunlimited.co.uk to discuss your project.

Visit Swift Unlimited More Swift Unlimited projects
More projects like this Garden offices Garden offices with a toilet
Read the guides The garden office guide Garden room size without planning permission

Published 8 November 2026 · Photographs courtesy of Swift Unlimited.

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