How Much Does A Window & Door

The Garden Office Cost Breakdown

A garden office is one of the most popular ways to create a dedicated workspace at home. But how much does a garden office actually cost?

Garden office prices vary depending on size, design and specification, as well as whether you choose a self build option or a fully installed solution. In this guide, we break down real garden office costs, what affects the price, what is included as standard, and any additional costs to consider, helping you choose the right option for your space and budget.

How Much Does a Garden Office Cost?

The cost of a garden office depends on factors such as size, layout, placement in the garden and optional upgrades.

As a general guide to garden office cost:

• Self build garden office kits start from £9,995
• Fully installed small garden offices start from £12,485 for a 2.28m x 2.44m building
• Large garden offices can cost up to £43,370 for a 30 square metre internal space

Most homeowners can expect the average garden office cost to fall between £12,000 and £30,000 for a professionally installed building, depending on size and specification.

Between the smallest and largest options, there are over seventy size configurations available. Sizes increase in modular half metre increments, making it easy to design a garden office that fits your space and working needs.

Other Costs to Consider with Your Garden Office 💡

When budgeting for garden office cost, it is also worth keeping a few additional considerations in mind.

• Delivery – Included within 100 miles of our Buckinghamshire factory (HP18 0XB). Beyond that? We’ll calculate a fair quote during your consultation.
• Levelling – Concrete mini pile foundations are included in the garden office cost, but your plot needs to be level within 200 mm. If it’s not, grab a few landscaping quotes; no need to prep the ground before your site survey.
• Planning Permission (if required) – Most garden offices don’t need this. If yours does, based on size or placement, we’ll handle the entire application process for you.

What Affects the Cost of a Garden Office

The price of a garden office is influenced by the overall size of the building and any optional upgrades you choose.

Overall size

Larger buildings cost more due to increased materials, insulation and glazing. Smaller garden offices are ideal for solo working and typically sit at the lower end of garden office cost ranges, while larger layouts suit full time use or multipurpose spaces.

Optional upgrades

Upgraded doors, additional glazing and features such as air conditioning or underfloor heating enhance comfort and appearance, but increase the final garden office cost.

What Is Included in the Price of a Garden Office

Unlike many garden room companies, Green Retreats garden offices are fully equipped as standard, with no hidden extras.

Every garden office includes:

Built to last

Maintenance free redwood cladding and a robust steel and PVC coated roof designed for durability and long term use.

Comfort all year round

High performance insulation in the walls, floor and roof, combined with Pilkington K Optiwhite double glazing and heating included as standard.

Bright and secure spaces

A choice of wide French or sliding doors, full height windows and insurance rated locking systems for peace of mind.

Modern interiors ready for work

Soft sheen melamine walls, oak effect laminate flooring and contemporary internal finishes that create a professional workspace from day one.

Fully powered and ready to connect

Internal and external lighting, a consumer unit and three double sockets, all fully wired and ready for final electrical connection.

Is a Garden Office Worth the Cost

For many homeowners, a garden office offers better value than extending or converting part of the house. There is far less disruption, no unexpected build costs and the space is ready to use in days rather than months.

A professionally built garden office also adds long term flexibility, supports healthier work life balance and creates valuable extra space that can be used for work, hobbies or leisure well into the future.