Garden Rooms and Offices | Bespoke Garden Buildings in Hampshire

ZERO MAINTENANCE

We use plastisol coated galvanised steel giving a superior sturdy structure that will never rot or deretiotate in years to come. So unlike the traditional timber rooms, you will never have to varnish or treat your garden room.

SUPERIOR INSULATION

Our modular panels have a 75mm polyurethane insulated core giving tremendous u-values of 0.13! The very best on the market. This awesome insulation gives massive energy savings. Even in the harshest of winters a small electric heater is more than sufficient to keep a comfortable temperature.

NO PLANNING PERMISSION

Most garden offices fall within the laws of permitted development. However, if you are in a conservation area or you have specific requirements, we can guide you through the process to ensure compliance.

RAPID INSTALLATION

Our unique insulated modular panel system provides a flexible solution to your garden room/office needs

Installed in as little as 5 hours, so you wont have to lift a finger with no mess or stress of a building site. All of the hard work is done in house at our Hampshire based Factory.

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Bespoke Garden Rooms & Offices – Made in Hampshire, Installed in a Day

Looking to create a peaceful space to work, relax or focus at home? At CS Garden Offices, we design and install bespoke garden rooms and offices across Hampshire and the South. Each building is made to your specifications using advanced insulated panels – ensuring a comfortable, stylish and low-maintenance space all year round.

Bespoke Garden Rooms & Offices – Built Around You

We specialise in fully insulated garden rooms and offices that are warm in winter, cool in summer, and designed to last a lifetime. Whether you need a private workspace, creative studio or multi-purpose garden room, we’ll help you create a space that’s functional, beautiful, and ready to use within days – not weeks.

Our modular buildings are constructed using structural insulated panels (SIPs) in our Gosport-based factory, ensuring exceptional build quality, thermal performance and a clean, modern finish.

The Smarter Way to Add Space

Our garden buildings are ideal for:

✅ Home offices – escape the distractions and work in peace

✅ Garden rooms – a flexible space for hobbies, fitness or relaxation

✅ Creative studios or workshops

✅ Secure garages and storage rooms

✅ Multi-use spaces to adapt as your needs change

With no need for planning permission in most cases, and a typical install time of just one day, you can enjoy your new space with zero stress.

Why Choose CS Garden Offices?

🏗️ Factory-built for precision – each panel made locally in Hampshire

🌡️ Fully insulated for year-round comfort

🧼 Zero-maintenance materials – no cladding, repainting or upkeep needed

⚡ Electrical fit-out included – with sockets, lighting and heating options

🏡 Stylish, modern finish – customisable inside and out

🛠️ Quick, clean installation – usually completed in a single day

Unlike timber builds, our steel-faced SIP panels are built to last – rot-proof, weather-resistant and perfectly sealed for long-term performance.

Bespoke Garden Offices

Bespoke Garden Rooms

Get a free quote today

We’d be more than happy to help you in your journey of finding the most perfect garden room or office for you.

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Designed in Hampshire. Delivered Across the South.

From our workshop in Gosport, we supply and install garden rooms and offices across Hampshire, Portsmouth, Fareham, Southampton, Chichester, Winchester and surrounding areas.

We handle everything in-house – from design and manufacture to groundworks and final installation – ensuring a seamless process and exceptional results.

Start designing your perfect garden room or office today.
Get in touch for a free quote and consultation – and let’s bring your free garden space to life.

📞 Call us on 01329 285563
📧 Email hello@cs-gardenoffices.co.uk
Or request a free quote now.

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Financial options available with Pegasus

Pegasus Finance is proud to have teamed up with CS Garden Offices, offering flexible, affordable finance options to customers wishing to purchase their dream garden office. You will find the perfect option to suit your needs, we’ll make the process of financing the project affordable and stress free.