How Much Does a Garden Room Cost in the UK? (2025 Guide)

A garden room is an excellent way to add extra space to your home without moving house.

But how much does a garden room actually cost in the UK?

Here's a realistic price guide to help plan your budget.

Average Garden Room Costs in the UK

The typical cost of a garden room in the UK ranges from:

• Small garden rooms (2m x 2m): £6,000 – £10,000

• Medium garden rooms (3m x 3m): £10,000 – £15,000

• Large garden rooms (5m x 4m+): £15,000 – £30,000+

These prices depend heavily on materials, insulation, glazing, and electrical work and final finishes.

What Affects the Price?

Several factors influence the final cost of a garden room.

1. Size - Larger buildings need more materials, more labour and stronger foundations.

2. Foundations - Options include

   1. Concrete base,

   2. Ground screws,

   3. Concrete Piles

   Ground Conditions can effect the type of foundations used. Opulux Garden room favours Ground Screws for most builds

3. Insulation and Year Round Use - Fully insulated garden rooms for winter as well as summer use generally cost more that a basic summer house garden room.

4. Electrical Work - Lighting, Heating, Sockets and Internet Cabling all increase price.

5. Glazing and Doors - Bi-fold Doors, Sliding Doors and Full Height glass panels all sit at the higher end of the budget.

Is a Garden Room Worth the Investment?

Most homeowners see strong returns from investing into a garden room because they:

• Are usable living space

• Increase property value - in some instances as much as 20%

• Improve home working quality

• Avoid the stress of moving house

• A safe space for younger members of the family

  For many clients its a smart long-term investment.

  Why Choose Opulux Garden Rooms?

  With Opulux Garden Rooms your price included:

• Premium Service

• Premium Materials

• A fully Insulated steel structure

• Professional Installation

• A dedicated point of contract from the initial enquiry to hand over

  Contact Opulux Garden Rooms for your Garden Room Requirements.