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Garden room project · Timber Rooms

Garden office with composite cladding and secret bike store

A 5.3m × 3.5m Timber Rooms building split into a home office and a bike store, each with its own door, and clad in dark grey composite.


Published 4 November 2019 · Updated 31 October 2026 · 3 minute read · Written by The Garden Room & Annexe Guide

Garden office with bike store by Timber Rooms
Timber Rooms  5.3m × 3.5m garden office with a bike store

Bespoke garden room specialists like Timber Rooms collaborate closely with clients to create unique, high-spec designs. For example, Timber Rooms completed a garden office with a discreet bike store for homeowners seeking a low-maintenance yet high-quality solution.

This project demonstrates how materials and design features can be tailored to meet specific needs, resulting in a stylish and functional space.

At a glance

  • Size: 5.3m × 3.5m, split into two rooms with their own external entrances: the office, and a 1.5m × 3.5m bike store behind it.
  • Outside: Dark grey composite cladding that keeps its colour without painting, with dark grey uPVC doors and windows.
  • Glazing: A large casement window above one desk, and a floor-to-ceiling glazed corner, which includes the office door, framing another.
  • Inside: Plastered and decorated walls and ceiling, with wood flooring over underfloor heating that leaves the walls free for furniture and storage; the bike store has robust finishes, shelving and racks.
  • Company: Timber Rooms, who design each building with the client and work across East Sussex, West Sussex, Surrey and South London.

Part of our garden office guide →

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Layout

A dual-purpose building

The 5.3m x 3.5m garden building was designed with two separate rooms, each featuring its own external entrance. This division allows the building to serve dual purposes-a sophisticated home office and a practical bike storage area.

Exterior

Low maintenance external finishes

The exterior of the garden room is clad in contemporary dark grey composite wood. Composite cladding is a popular choice for modern garden rooms due to its durability and ease of maintenance. The pre-coloured boards ensure the building retains its sleek appearance without the need for painting or frequent upkeep.

This composite finish is paired with dark grey uPVC doors and windows, customised to suit the client’s preferences. A large casement window was installed above one desk, while a stunning floor-to-ceiling glazed corner-incorporating an office entrance-was created to frame another desk area. This thoughtful configuration maximises natural light while enhancing the building’s contemporary aesthetic.

Garden office with dark grey composite cladding by Timber Rooms
Dark grey composite cladding  with matching uPVC frames
Light modern garden office by Timber Rooms
Inside the office  plastered walls and wood flooring
Interior

High-spec interior features

Inside, the garden office boasts premium finishes. The plastered and decorated walls and ceiling complement the wood flooring, under which underfloor heating has been installed. Underfloor heating is a smart choice in compact spaces, offering consistent warmth while freeing up wall space for furniture and storage.

The overall design achieves a light, modern, and inviting atmosphere, perfect for productivity.

Garden office with underfloor heating by Timber Rooms
Underfloor heating  beneath the wood floor
Bike store

Secret bike store

Behind the office lies a cleverly integrated 1.5m x 3.5m bike store. In contrast to the office’s high-end finish, this space prioritises practicality, with robust finishes tailored for durability. Shelving and racks were installed to provide organised storage for bicycles and other equipment, ensuring the space is both functional and discreet.

Secret bike storage next to the garden office by Timber Rooms
The bike store  1.5m × 3.5m, behind the office
Planning something similar?

Learn more about Timber Rooms

To learn more about Timber Rooms’ bespoke designs, contact their team at 01273 839 491 or email hello@timberrooms.co.uk. Timber Rooms specialise in creating custom garden buildings throughout East Sussex, South London, Surrey, and West Sussex.

Visit Timber Rooms More Timber Rooms projects
More projects like this Garden offices Garden rooms with storage Composite cladding 10–20sqm garden rooms
Read the guides What garden rooms cost Permitted development What is a garden room?

Published 4 November 2019 · Photographs courtesy of Timber Rooms.

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building across England
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