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20ft Wide Garden Offices & Rooms


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Malvern Sienna Pent

A modern light and spacious garden room. Featuring stylish, glass to ground double glazed windows as standard, making it ideal for use as a summerhouse or garden office.

  • Pent Style Roof
  • Double Glazed Windows/Doors
  • Full Length Glazing
  • Fully Customisable

Prices from £2,904

Prices from £2,904

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Malvern Sienna Pavilion

An ideal combination of summerhouse and garden office. Features stylish glass to ground windows with double glazing as standard creating a modern, light and spacious garden room.

  • Pavilion Style Design
  • Double Glazed Windows/Doors
  • Full Length Glazing
  • Optional Painted Finish

Prices from £2,904

Prices from £2,904

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Malvern Acacia Pent

A hybrid of summerhouse and office, the Acacia Pent includes double glazed windows as standard and can be fitted with fully insulated walls and ceiling. Available in 16 sizes from 8ft x 6ft to 20ft x 10ft.

  • Pent Roof Design
  • Double Glazed Windows/Doors
  • Half Length Glazing
  • Fully Customisable

Prices from £2,332

Prices from £2,332

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Malvern Acacia Pavilion

The Acacia Pavilion combines both summerhouse and office. The optional insulation allows you to use your buildings all year round. The Acacia Pavilion is available in 20 sizes and five cladding choices.

  • Pavilion Roof
  • Double Glazed Windows/Doors
  • Half Length Glazing
  • Fully Customisable

Prices from £2,332

Prices from £2,332

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Malvern Acacia Apex

A fabulous combined summerhouse and office, the Acacia Apex features a single door, double glazing throughout and side opening windows. The 14 inch Apex roof overhang gives this garden building a classic style.

  • Apex Roof
  • Double Glazed Windows/Doors
  • Half Length Glazing
  • Fully Customisable

Prices from £2,332

Prices from £2,332

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Malvern Hanley

A beautiful garden room made from Western Red Cedar with full length, energy saving double glazing and insulation for year round use. Available in a range of sizes in 3 different roof styles.

  • Painted Western Red Cedar
  • Planitherm Double Glazing
  • Painted MDF Lining and insulation
  • 10 Year Guarantee

Prices from £13,080

Prices from £13,080

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Browns By Design

Do you have your own idea of the garden room you want? Well look no further! Browns By Design takes your dreams and make them reality with a custom build garden room just for you!

  • Built to your design
  • Site survey available
  • 10-year structural guarantee
  • Delivered and installed

Malvern Acacia Apex High

The Acacia Apex High is an adaptation of our Acacia Apex, with extra height! The optional insulation allows you to use your building all year round. The Acacia Apex High is available in a range of sizes and six timber choices.

  • Extra-height version
  • Double glazed windows and doors
  • Optional paint finish
  • Double Doors

Prices from £2,566

Prices from £2,566

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20ft Wide Garden Office

These garden offices are available in a 20ft width. Most of our garden offices are available in a choice of size to ensure that we have something to fit into any garden. GBC Group specialise in the supply, delivery and installation of garden offices from 20ft wide. Our 20ft wide garden office can be customised to suit, with a whole host of options. As you can see from the images above, these buildings are built in a range of shapes and styles.

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