Website update in progress: Log Cabins Avons, Rhines, and Vanguards have now been renamed to Severn.

Insulated Garden Offices

Quality and Prices That are Hard to Beat.

  • Avoid Planning Permission*
  • Designed with the DIY market in mind for quicker install
  • 28mm double glazed uPVC windows and doors
  • Secure, industry leading 12-point locking system
  • All Spruce. Not Cheap Pine or Low-Grade Spruce
  • Pressure Treated Floor Bearers

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insulated-garden-offices
Responsibly Sourced Timber
30+ Years Experience
10 Year Guarantee*
Free Delivery on Most Orders
UK Based Company

Insulated Garden Offices

Work from home in comfort and style in one of our top of the range insulated garden offices. With fully insulated walls, floor and roof, and double glazing, they are perfect for use all year round.

We use the best quality materials to ensure high thermal efficiency. Whether you need a home office, gym, or creative space, our insulated garden rooms offer the perfect solution with exceptional durability and energy efficiency.

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Only 25% Deposit is needed for Dunster House Online Orders

Insulated Garden Offices

Work from home in comfort and style in one of our top of the range insulated garden offices. With fully insulated walls, floor and roof, and double glazing, they are perfect for use all year round.

We use the best quality materials to ensure high thermal efficiency. Whether you need a home office, gym, or creative space, our insulated garden rooms offer the perfect solution with exceptional durability and energy efficiency.

Showing 97-104 of 104 products
Dominator Composite Garden Office - Dwarf
Garden building spring sale
Dominator Composite Garden Office – Dwarf
W4.5m x D2.5m / W15' x D8'
From £11,382.95
£8,537.21 with code spring25
Addroom® Conservatory Alternative
Garden building spring sale
Addroom® Conservatory Alternative
W3m x D2.5m / W10' x D8'
From £7,959.99
£5,969.99 with code spring25
Dominator Composite Garden Office – Dwarf
Garden building spring sale
Dominator Composite Garden Office – Dwarf
W2.5m x D2.5m / W8' x D8'
From £7,918.97
£5,939.23 with code spring25
Dominator Classic Garden Office Reverse Pent
Garden building spring sale
Dominator Classic Garden Office Reverse Pent
W2.5m x D2.5m / W8' x D8'
From £5,035.96
£3,776.97 with code spring25
Terminator with uPVC INSULATED Log Cabin
Garden building spring sale
Terminator with uPVC INSULATED Log Cabin
W5m x D3m / W16' x D10'
Insulated 62mm Wall, Equivalent to 140mm U-Value
From £10,194.99
£7,646.24 with code spring25
Severn with uPVC INSULATED Log Cabin
Garden building spring sale
Severn with uPVC INSULATED Log Cabin
W3m x D3m / W9' x D10'
Insulated 62mm Wall, Equivalent to 140mm U-Value
From £8,284.99
£6,213.74 with code spring25
Severn with uPVC INSULATED Log Cabin
Garden building spring sale
Severn with uPVC INSULATED Log Cabin
W4m x D3m / W12'6" x D10'
Insulated 62mm Wall, Equivalent to 140mm U-Value
From £9,919.99
£7,439.99 with code spring25
Severn with uPVC INSULATED Log Cabin
Garden building spring sale
Severn with uPVC INSULATED Log Cabin
W6m x D5m / W19' x D16'
Insulated 62mm Wall, Equivalent to 140mm U-Value
From £17,669.99
£13,252.49 with code spring25
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Showing 97-104 of 104 products
Only 25% Deposit is needed for online orders at Dunster House

David’s Fully Insulated Garden Office

View Case Study

Ed’s Garden Music Room and Home Office

View Case Study

Mark’s Luxury Garden Office

View Case Study