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Garden room project · Ark Design Build

Home office with secret storage

A 5m × 3.5m cedar office in Kent with black bi-folds and a store behind a door clad to match the walls.


Published 13 June 2019 · Updated 23 October 2026 · 3 minute read · Written by The Garden Room & Annexe Guide

Garden office with secret shed
Ark Design Build  5m × 3.5m office and store

Ark Design Build have established a reputation for creating contemporary garden offices in Kent and the surrounding areas. We’ve recently featured several examples, including:

  • Thermowood Garden Office – a stylish finish, Thermowood is a durable cladding that can be a more affordable alternative to Cedar.
  • Garden Office Shed Combo – a 5m x 3m building that houses two distinct uses under one well-designed roof.

At a glance

  • Size: 5m × 3.5m, split by a partition wall.
  • Built for: A home office plus storage.
  • Construction: Turnkey, from foundations to the mains connection.
  • Finishes: Cedar with black bi-folds, a composite deck; plaster and laminate inside.
  • Company: Ark Design Build, with heating and Cat6 cabling included.

Part of our garden office guide →

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Layout

One garden building, two uses

Similar to the last example, this project by Ark Design Build combines a home office with a secret storage room. This building is slightly larger, measuring 5m wide by 3.5m deep. A partition wall divides the space into two separate rooms.

The main office is accessed through a 3-leaf set of bi-fold doors. The doors and windows are black, a finish that’s growing in popularity as an alternative to Anthracite Grey, which has been the trend for the past few years. Like grey, the black finish creates a striking contrast with the Cedar cladding used in this project.

Black bi-fold doors look sharp with the Cedar cladding
Black bi-folds  against the cedar

Inside, the office space features laminate wood flooring and fully plastered and decorated walls and ceiling, which help to reflect light throughout the room-ideal for a workspace. A narrow rectangular window has been positioned high in the rear wall, a clever design choice. While it may not frame the best views, it allows extra light into the room and can be opened to let in fresh air.

Plastered and decorated interior of the office
The office
Storage

Secret storage room

Next to the office is a hidden storage room, accessed through a ‘secret’ door finished with the same cladding as the exterior walls. Incorporating storage into garden office designs is becoming increasingly popular, offering a practical solution that keeps the garden tidy without the need for extra sheds.

Outside

Composite entrance deck

A composite wood deck spans the front of the building, creating an entrance to both the office and storage room. Composite decking is a popular choice among designers, as it requires minimal maintenance to retain its colour and doesn’t become slippery like traditional wooden decking.

The company

A complete project

Ark Design Build managed the entire project for their clients, from laying the foundation to connecting the electrics to the mains supply. They pride themselves on transparency, offering packages that include heating and Cat6 data cabling for reliable internet connections without any hidden extras.

Planning something similar?

Learn more about Ark Design Build

Ark Design Build operates in Kent, East Sussex, and parts of Essex. To learn more about creating a garden room with a storage room, contact the Ark Design Build team on 07896 196 718 or email them at contact@arkdesignbuild.co.uk. Visit www.arkdesignbuild.co.uk to explore more of their work.

Visit Ark Design Build More Ark Design Build projects
More projects like this Garden offices Offices with storage Garden rooms with storage 10–20sqm garden rooms
Read the guides What garden rooms cost Permitted development What is a garden room?

Published 13 June 2019 · Photographs courtesy of Ark Design Build.

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