How Much does a Garden Room cost in the UK

dspbjoinery
Apr 13
2 min read

How Much Does a Garden Room Cost in the UK?

A garden room is more than just an outdoor building—it’s a lifestyle upgrade. Whether you want a home office, a gym, a creative studio, or a peaceful retreat, garden rooms offer a stylish and functional way to extend your living space. One of the most common questions we get asked is: how much does a garden room cost? Let’s break it down.

Average Cost of a Garden Room

The cost of a garden room can vary significantly depending on the size, design, materials, and features. On average in the UK:

Basic garden rooms start from £10,000 – £15,000
Mid-range options with added insulation, lighting, and heating typically cost £15,000 – £30,000
High-end, bespoke garden rooms with premium finishes, plumbing, and smart tech can range from £30,000 to £50,000+

What Affects the Price of a Garden Room?

Here are the key factors that influence the overall cost:

1. Size

Naturally, the bigger the structure, the higher the cost. A small 3m x 3m room might be perfect for a compact home office, while larger 6m+ garden rooms are ideal for multi-purpose spaces or entertaining areas.

2. Foundations and Base Work

Ground conditions vary from garden to garden. A solid base is essential, and the type (concrete slab, ground screws, pile foundations) can impact cost.

3. Insulation & Year-Round Use

If you plan to use your garden room all year round, quality insulation, double glazing, and heating are a must. This increases initial costs but pays off in comfort and energy efficiency.

4. Utilities: Electricity, Plumbing & Internet

Electrics and lighting are standard, but adding plumbing (for a WC or kitchenette) and internet connection will increase the budget.

5. Design & Finish

Custom cladding (cedar, composite, etc.), bi-fold doors, roof lights, or custom interiors will elevate the aesthetic and the price.

6. Planning & Regulations

Most garden rooms fall under permitted development and don’t require planning permission, but it’s worth checking if you live in a conservation area or want a particularly large build. Any costs related to drawings, applications, or compliance can add up.

Long-Term Value

While a garden room is an investment, it can also add value to your home and improve your lifestyle. Think of it as a cost-effective extension—without the stress of a full home renovation.

Example Pricing

Here’s a rough guide to what you might expect:

Garden Room Type	Size (approx.)	Price Range	Includes
Compact Office	3m x 2.5m	£12,000 – £16,000	Fully insulated, electrics, flooring
Family Studio	5m x 3m	£20,000 – £28,000	Double glazing, lighting, heating
Premium Garden Room	6m x 4m+	£30,000 – £50,000+	Bespoke design, bathroom, smart tech

Thinking of Building a Garden Room?

We specialise in creating bespoke garden rooms designed around your lifestyle and needs. Every project starts with a free consultation to explore your space, ideas, and budget.

Get in touch today to start planning your perfect garden escape.