Mercia Summerhouses

Make your dreams of a luxury retreat or a humble hideaway a reality with a Mercia Summerhouse: plush and well-made in all of the right places! Whether you desire a play room for the little ones or a quaint nook for late-night reading, the Mercia brand delivers with a range of light, open designs that are sure to exceed your expectations.
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  1. Mercia 3m x 4m Insulated Garden Room (with FREE Installation)
    Mercia 3m x 4m Insulated Garden Room (with FREE Installation)
    £9,099.99
    £8,599.99
    More info

    Mercia 3m x 4m Insulated Garden Room (with FREE Installation)

    Description:
    <p>This 3m x 4m Insulated Garden Room is perfect as a home office, a place to entertain guests or simply an area to relax and unwind all year round, thanks to the Eco-quilt insulation that features in the walls, roof, and floor. The walls are consisting of three layers, a 16mm tongue and groove outer layer, a 44mm gap in the middle that is filled with insulation, and a 12mm tongue and groove inner wall. The thick walls mean heat is trapped in and any entering noise from the outside is grea...
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    Save £500.00
  2. Mercia 4m x 6m Insulated Garden Room (with FREE Installation)
    Mercia 4m x 6m Insulated Garden Room (with FREE Installation)
    £12,100.99
    £11,499.99
    More info

    Mercia 4m x 6m Insulated Garden Room (with FREE Installation)

    Description:
    <p>This 4m x 6m is perfect if you're in need of a home office, additional living space or somewhere to accommodate guests. has been designed and built for year round use, thanks to the Eco-quilt insulation that features in the walls, roof, and floor. The walls are consisting of three layers, a 16mm tongue and groove outer layer, a 44mm gap in the middle that is filled with insulation, and a 12mm tongue and groove inner wall. The thick walls mean heat is trapped in and any entering noise fr...
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    Save £601.00
  3. Mercia 3m x 2m Insulated Garden Room (with FREE Installation)
    Mercia 3m x 2m Insulated Garden Room (with FREE Installation)
    £6,399.99
    £5,999.99
    More info

    Mercia 3m x 2m Insulated Garden Room (with FREE Installation)

    Description:
    <p>This 3m x 2m Insulated Garden Room creates the perfect way to make the most of your garden, while in the comfort of the indoors all year round, thanks to the Eco-quilt insulation that features in the walls, roof, and floor. The walls are consisting of three layers, a 16mm tongue and groove outer layer, a 44mm gap in the middle that is filled with insulation, and a 12mm tongue and groove inner wall. The thick walls mean heat is trapped in and any entering noise from the outside is greatl...
    View Product
    Save £400.00
  4. Mercia 2m x 3m Insulated Garden Room (with FREE Installation)
    Mercia 2m x 3m Insulated Garden Room (with FREE Installation)
    £6,399.99
    £5,999.99
    More info

    Mercia 2m x 3m Insulated Garden Room (with FREE Installation)

    Description:
    <p>This 2m x 3m Insulated Garden Room creates the perfect way to make the most of your garden, while in the comfort of the indoors all year round, thanks to the Eco-quilt insulation that features in the walls, roof, and floor. The walls are consisting of three layers, a 16mm tongue and groove outer layer, a 44mm gap in the middle that is filled with insulation, and a 12mm tongue and groove inner wall. The thick walls mean heat is trapped in and any entering noise from the outside is greatl...
    View Product
    Save £400.00
  5. Mercia 3m x 5m Insulated Garden Room (with FREE Installation)
    Mercia 3m x 5m Insulated Garden Room (with FREE Installation)
    £10,399.99
    £9,999.99
    More info

    Mercia 3m x 5m Insulated Garden Room (with FREE Installation)

    Description:
    <p>This 3m x 5m Insulated Garden Room is perfect as a home office, a place to entertain guests or simply an area to relax and unwind all year round, thanks to the Eco-quilt insulation that features in the walls, roof, and floor. The walls are consisting of three layers, a 16mm tongue and groove outer layer, a 44mm gap in the middle that is filled with insulation, and a 12mm tongue and groove inner wall. The thick walls mean heat is trapped in and any entering noise from the outside is grea...
    View Product
    Save £400.00
  6. Mercia 3m x 3m Insulated Garden Room (with FREE Installation)
    Mercia 3m x 3m Insulated Garden Room (with FREE Installation)
    £7,399.99
    £6,999.99
    More info

    Mercia 3m x 3m Insulated Garden Room (with FREE Installation)

    Description:
    <p>This 3m x 3m Insulated Garden Room is an incredibly versatile building that can be used all year round thanks to the Eco-quilt insulation that features in the walls, roof, and floor. The walls are consisting of three layers, a 16mm tongue and groove outer layer, a 44mm gap in the middle that is filled with insulation, and a 12mm tongue and groove inner wall. The thick walls mean heat is trapped in and any entering noise from the outside is greatly reduced. Each window used in this build...
    View Product
    Save £400.00
  7. Mercia 3m x 6m Insulated Garden Room (with FREE Installation)
    Mercia 3m x 6m Insulated Garden Room (with FREE Installation)
    £11,599.99
    £10,999.99
    More info

    Mercia 3m x 6m Insulated Garden Room (with FREE Installation)

    Description:
    <p>This 3m x 6m is perfect if you're in need of a home office, additional living space or somewhere to accommodate guests. has been designed and built for year round use, thanks to the Eco-quilt insulation that features in the walls, roof, and floor. The walls are consisting of three layers, a 16mm tongue and groove outer layer, a 44mm gap in the middle that is filled with insulation, and a 12mm tongue and groove inner wall. The thick walls mean heat is trapped in and any entering noise fr...
    View Product
    Save £600.00
  8. Mercia 4m x 3m Insulated Garden Room (with FREE Installation)
    Mercia 4m x 3m Insulated Garden Room (with FREE Installation)
    £9,099.99
    £8,599.99
    More info

    Mercia 4m x 3m Insulated Garden Room (with FREE Installation)

    Description:
    <p>This 4m x 3m perfect for those looking to add a modern extension to their garden&#33; This all-purpose garden room has been designed and built for year round use, thanks to the Eco-quilt insulation that features in the walls, roof, and floor. The walls are consisting of three layers, a 16mm tongue and groove outer layer, a 44mm gap in the middle that is filled with insulation, and a 12mm tongue and groove inner wall. The thick walls mean heat is trapped in and any entering noise fro...
    View Product
    Save £500.00
  9. Mercia 4m x 5m Insulated Garden Room (with FREE Installation)
    Mercia 4m x 5m Insulated Garden Room (with FREE Installation)
    £11,100.99
    £10,499.99
    More info

    Mercia 4m x 5m Insulated Garden Room (with FREE Installation)

    Description:
    <p>This 4m x 5m perfect for those looking to add a modern extension to their garden&#33; This all-purpose garden room has been designed and built for year round use, thanks to the Eco-quilt insulation that features in the walls, roof, and floor. The walls are consisting of three layers, a 16mm tongue and groove outer layer, a 44mm gap in the middle that is filled with insulation, and a 12mm tongue and groove inner wall. The thick walls mean heat is trapped in and any entering noise fro...
    View Product
    Save £601.00
  10. Mercia 4m x 4m Insulated Garden Room (with FREE Installation)
    Mercia 4m x 4m Insulated Garden Room (with FREE Installation)
    £10,199.99
    £9,599.99
    More info

    Mercia 4m x 4m Insulated Garden Room (with FREE Installation)

    Description:
    <p>This 4m x 4m perfect for those looking to add a modern extension to their garden&#33; This all-purpose garden room has been designed and built for year round use, thanks to the Eco-quilt insulation that features in the walls, roof, and floor. The walls are consisting of three layers, a 16mm tongue and groove outer layer, a 44mm gap in the middle that is filled with insulation, and a 12mm tongue and groove inner wall. The thick walls mean heat is trapped in and any entering noise fro...
    View Product
    Save £600.00
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Why Buy a Mercia Summerhouse?


The heart of the matter is, with a summer house or shed sourced from Mercia, a world of customisation lies at your fingertips. As all Mercia Summerhouses come in a natural finish, you can treat and paint your way to your dream garden build. 
If you are less inclined towards decoration, explore Mercia Summerhouses in a wide range of sizes and designs: guaranteed to withstand the harsh elements in terms of sturdiness and the use of high-quality wood.  Awaken your inner explorer and delve into the wilderness of our bespoke summer houses and Mercia sheds today.