The Linea Medium from 3m x 3m

From £15,374

Discover the best-selling ThermoWood® Linea - a luxury garden room with a sleek, modern design. Its clean, cuboid shape, hidden guttering, and no overhang fit perfectly into any garden corner. Starting at 3m x 3m, it offers a stylish glazed front to enjoy stunning views and a spacious interior for your hobbies, relaxation, extra living space, or as your outdoor workspace. A stylish example in our garden offices range.

Standard Features

  • Insulation in walls, roof & floor
  • Factory painted doors & windows
  • Factory stained walls
  • V-Grooved MDF painted internal lining
  • Tongue & groove timber floor
  • Garden Affairs assembly
  • Delivery to the UK via articulated lorry - delivery charges for a smaller vehicle will apply where access is restricted
  • Timber Deckbase£1,575.00
    Concrete Base£1,800.00
    Exterior Factory Painting Estimate£1,120.00
    Interior Factory Painting Estimate£2,754.00
    Laminate Flooring Upgrade£945.00
    Standard Electrical Package *£1,200.00
    Sedum Living Roof£1,260.00
    Timber Deckbase£1,837.50
    Concrete Base£2,100.00
    Exterior Factory Painting Estimate£1,120.00
    Interior Factory Painting Estimate£2,754.00
    Laminate Flooring Upgrade£1,102.50
    Standard Electrical Package *£1,200.00
    Sedum Living Roof£1,470.00
    Timber Deckbase£2,100.00
    Concrete Base£2,400.00
    Exterior Factory Painting Estimate£1,120.00
    Interior Factory Painting Estimate£2,754.00
    Laminate Flooring Upgrade£1,260.00
    Standard Electrical Package *£1,200.00
    Sedum Living Roof£1,680.00
    Timber Deckbase£2,143.75
    Concrete Base£2,450.00
    Exterior Factory Painting Estimate£1,120.00
    Interior Factory Painting Estimate£2,754.00
    Laminate Flooring Upgrade£1,286.25
    Standard Electrical Package *£1,200.00
    Sedum Living Roof£1,715.00
    Timber Deckbase£2,450.00
    Concrete Base£2,800.00
    Exterior Factory Painting Estimate£1,120.00
    Interior Factory Painting Estimate£2,754.00
    Laminate Flooring Upgrade£1,470.00
    Standard Electrical Package *£1,200.00
    Sedum Living Roof£1,960.00

    * excluding connection to the house

    Total Cost
    Building Cost
    £
    Assembly Cost
    £
  • The following table displays the available sizes for this product. For a bespoke project, please get in touch.

    WxD3.00 m3.50 m4.00 m
    3.00m9.00m210.50m212.00m2
    3.50mN/A12.25m214.00m2

    What could influence your price?

    This building is fully customisable and made-to-order. Changes to the design such as the ones listed opposite can have an affect on the overall price.

    • Size
    • Window and door configuration
    • Factory paint finish
    • Selection of optional extras

Examples of Linea Garden building designs

Our flat roof Linea is fully customisable, below are some examples of alternate designs.

Linea Medium - 4.5m x 2.7m

Linea Medium - 4.5m x 2.7m

Linea Medium - 4m x 2.5m

Linea Medium - 4m x 2.5m

Linea Medium - 3.5m x 2.6m

Linea Medium - 3.5m x 2.6m

Linea Medium - 3.5m x 2.5m

Linea Medium - 3.5m x 2.5m

Linea Medium - 3.5m x 2.5m

Linea Medium - 3.5m x 2.5m

Linea Medium - 4m x 3m

Linea Medium - 4m x 3m

Linea Medium - 4m x 3m

Linea Medium - 4m x 3m

Linea Medium - 3.5m x 2.5m

Linea Medium - 3.5m x 2.5m

Linea Medium - 3.5m x 3m

Linea Medium - 3.5m x 3m

Linea Medium - 3.9m x 2.5m

Linea Medium - 3.9m x 2.5m

Linea Medium - 3m x 3m

Linea Medium - 3m x 3m

Linea Medium - 4m x 2m

Linea Medium - 4m x 2m

Linea Medium - 4.2m x 2.3m

Linea Medium - 4.2m x 2.3m

Linea Medium - 4.5m x 2.2m

Linea Medium - 4.5m x 2.2m

Linea Medium - 4.5m x 2.2m

Linea Medium - 4.5m x 2.2m

Linea Medium - 4m x 3m

Linea Medium - 4m x 3m

Linea Medium - 3.5m x 2.9m

Linea Medium - 3.5m x 2.9m

Linea Medium - 4.5m x 3m

Linea Medium - 4.5m x 3m

Linea Medium - 3.5m x 2.5m

Linea Medium - 3.5m x 2.5m

Linea Medium - 3.5m x 2.5m

Linea Medium - 3.5m x 2.5m

Linea Medium - 4m x 2.4m

Linea Medium - 4m x 2.4m

Linea Medium - 3.5m x 2.5m

Linea Medium - 3.5m x 2.5m

Linea Medium - 3.5m x 2.5m

Linea Medium - 3.5m x 2.5m

Linea Medium - 5m x 3m

Linea Medium - 5m x 3m

Linea Medium - 3.5m x 2.5m

Linea Medium - 3.5m x 2.5m

Linea Medium - 3.5m x 2.5m

Linea Medium - 3.5m x 2.5m

  • Details & Specifications

    Clever design

    The Linea combines thoughtful design with practical space utilization. With no roof overhang, it maximizes internal space and can be conveniently positioned against walls and fences. The 2.5m high flat roof, finished with EPDM, has a gentle slope leading to a hidden downpipe within the wall, which effectively drains water to the back.

    Exterior finishes

    Horizontally grooved Northern European Larchwood clads the exterior, known for its durability and strength. The eco-friendly, water-based natural stain finish highlights the wood's grain, or you can choose any RAL colour for a painted finish to match your preferences.

    Fully insulated

    To ensure comfort in all seasons, the Linea Office Studio is fully insulated. The walls feature high-quality multi-foil insulation and a cavity for electrics, while the roof and floor are insulated with foil-backed polyurethane, creating a comfortable indoor climate year-round.

  • All Features

    Durable Larchwood Cladding

    For durable cladding, our slow-grown Northern European Larchwood is ideal for placement near walls or fences.

    Paint & Stain Finished

    Available in multiple colours, the factory-painted walls, doors, and windows complement the Larchwood cladding, which can be stained to maintain timber's natural look.

    Fully Insulated

    Year-round comfort is achieved with double-foil backed polyurethane insulation in the roof and floor, and multi-foil insulation in the walls.

    Internally Lined & Painted

    Standard for the high-spec Linea, the interior boasts a factory-painted, v-grooved MDF lining.

    2.5m High Flat Roof

    At 2.5m high, the Linea’s flat roof typically meets permitted development rights, and the EPDM rubber roof has a 2-3 degree slope leading to a hidden downpipe.

    Double Glazed Doors & Windows

    The double-glazed timber doors and windows are of high quality and include secure multi-point locking systems.

    Fully Customisable Design

    The Linea’s design can be personalized for your garden, with size, doors, and windows adjustable to your liking.

  • Custom Options

    The Linea is fully customisable to suit your garden.

    Below are the custom options available:

    Size

    Customise your building to the exact size to suit your requirements.

    Size

    Doors and Windows

    Choose from a wide range of timber-framed, double-glazed door and window options.

    Doors and Windows

    Flooring

    Upgrade the tongue and groove timber floor to a high-quality laminate floor which is available in two colours.

    Flooring

    Colours

    Choose to have your doors and windows painted in a wide range of colours.

    Colours

    Electrical Spec

    We offer first and second fix electrics with a selection of fitting available.

    Electrical Spec

    Internal Lining

    Choose to have your modular building finished with a high-spec painted MDF or a rustic timber lining.

    Internal Lining

  • Product Video

  • FAQs

    • What type of insulation is used?

      The Linea uses high quality multi-foil insulation in the walls and foil-backed polyurethane insulation in the roof & floor.

    • Is the roof completely flat?

      None of our flat roof buildings are completely flat. The roof has a 2-3 degree slope for water run-off and the Linea has a concealed downpipe for drainage.

    • How is the Linea packaged & delivered?

      The Linea is shipped in panels of varying sizes depending on the size of the building. The building is wrapped and palletised before being delivered and offloaded.

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Let's design your ideal Linea building

Get in touch with our expert team of designers to configure the Linea Medium that's right for you.

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Advice & Resources

©2026 Titan Garden Buildings Limited trading as Garden Affairs
Registered in England & Wales at Titan Garden Buildings, Portsmouth Road, Ripley, Surrey, GU23 6EW
Company number: 05760433.

Send your enquiry

Speak to an advisor? 01225 774566

Speak to an advisor?

01225 774566