Size measured in metre

2. Select Treatment

2. Customise

3. Add optional extras

Discover our range of BillyOh accessories that allow you to customise your very own garden building to very last detail.


  • Reverse Apex Style for Increased Headroom
  • Choice of 28 or 44mm Tongue & Groove walls
  • Pressure Treated Options Available
  • Extra High Central Locking Double Door Design
  • Single or Double Glazed Doors and Windows
  • Floor and roof included as standard
  • Complete with felt, fixtures and fittings
Overall Dimensions (Includes Overhang)
  • (A) Width: 3.93m (12ft11)
  • (B) Depth: 2.49m (8ft2)
  • (C) Eaves: 2.04m (6ft8)
  • (D) Ridge: 2.36m (7ft9)
Pressure Treated Log Cabin

Why buy the Dorset log cabin?


Protects your building against rot and decay.


20 years of garden building experience and dedication.


Crouch free design, giving you the ultimate space.


11mm floor and roof and felt included.

What is it made from?

European Sourced Timber

Our carefully sourced timber is purposely selected to ensure dependable quality.

Galvanised Ironmongery

Making your cabin last longer by reducing the risk of rust for years to come.

Durable Tongue & Groove

The boards interlock with one another offering high quality weather protection.

Tear Resistant Felt

High performing waterproof felt, giving you the ultimate roof protection.

Shatterproof Glazing

Improving the structural durability and strength of your Log Cabin.

Heavy-Duty Floor Bearers

Lifts the building off the ground allowing air circulation and away from surface water.

And much more…

  • Various size options
  • Choice of styling
  • Attention to detail
  • Easy to build
  • Floor and roof included
  • Green mineral roof felt
  • Storm Braces included
  • Stylish Reverse Apex Design
  • Shatter resistant windows
  • Pressure treated lasts longer
  • Protected during delivery
  • Fixtures and fitting included
  • Full assembly instructions
  • 20 years experience

20 years of
Market Experience.
Lots of Happy Customers

Explore how we have made some of our million+ customers happy throughout the years.
Find out below and try the Dorset S for yourself.

Dimensions W4.0m x D2.5m W4.0m x D3.0m W4.5m x D3.0m W4.5m x D3.5m W5.0m x W4.0m
Width 388cm 393cm 453cm 448cm 508cm
Depth 238cm 333cm 333cm 348cm 388cm
Eaves Height (Inc Floor) 204cm 199cm 200cm 209cm 209cm
Eaves Height (Excl Floor) 208cm 195cm 196cm 205cm 205cm
Ridge Height (Inc Floor) 242cm 241cm 243cm 246cm 246cm
Ridge Height (Excl Floor) 238cm 237cm 239cm 242cm 242cm
Door Opening Size (w x h) 1870cm x 1620cm 156cm x 185cm 156cm x 185cm 187cm x 162cm
Door Width 162cm 77.4cm 77.4cm 162cm 162cm
Door Height 187cm 187cm 187cm 187cm 187cm
Width (Internal) 362cm 361cm 421cm 422cm 482cm
Depth (Internal) 212cm 271cm 271cm 332cm 362cm
Window Dimensions 65.6cm x 121.1cm 65.6cm x 121.1cm
Cladding Sizes Available 44mm 44mm 44mm 44mm 44mm
Materials W4.0m x D2.5m W4.0m x D3.0m W4.5m x D3.0m W4.5m x D3.5m W5.0m x W4.0m
Floor Material 11mm Tongue and Groove Floor Boards 11mm Tongue and Groove Floor Boards 11mm Tongue and Groove Floor Boards 11mm Tongue and Groove Floor Boards 11mm Tongue and Groove Floor Boards
Roof Material 11mm Tongue and Groove Roof Boards 11mm Tongue and Groove Roof Boards 11mm Tongue and Groove Roof Boards 11mm Tongue and Groove Roof Boards 11mm Tongue and Groove Roof Boards
Roof Covering Material Green Mineral Felt Green Mineral Felt Green Mineral Felt Green Mineral Felt Green Mineral Felt
Features W4.0m x D2.5m W4.0m x D3.0m W4.5m x D3.0m W4.5m x D3.5m W5.0m x W4.0m
Cladding Style Tongue and Groove Interlocking Boards Tongue and Groove Interlocking Boards Tongue and Groove Interlocking Boards
Roof Style Reverse Apex Reverse Apex Reverse Apex Reverse Apex Reverse Apex
Pre-Assembled Side Panels No No No No No
Please Note: This product has been designed as an affordable solution to most popular light domestic uses. All products supplied self assembly flat packed unless otherwise stated.

Below you'll find answers to the questions we get asked the most about our products.


The BillyOh guarantee covers this building against:

  • rot
  • decay
  • insect infestation

Please note: The guarantee does not cover timber splits or warping which may occur naturally over time.

Duration of Guarantee:

  • Tongue and Groove Buildings - up to 10 years
  • Log Cabins - up to 10 years
  • Pressure Treatment Buildings - up to 15 years

For more information about BillyOh Guarantee, please visit our terms and conditions

  • 28mm or 44mm T&G Log walls

  • Opening single glazed windows

  • 11mm T&G floor

  • 11mm T&G roof

  • Single glazed double doors

  • Green mineral roof felt

  • All fixtures and fittings

  • Comprehensive assembly instructions

Untreated: Our log boards can be delivered to you as untreated allowing you to enjoy the rustic and traditional aesthetic of a log cabin. Not only does this provide you with a lodge appearance, but allows you to decide the treatment type and colour which suits your tastes.

Pressure Treated: For a more protected building, you can opt for a pressure treated building which is an effective way of keeping the building long lasting. This is an extra step in the construction process where the wood is treated in a pressurised tank. Chemical preservatives are forced deep into the wood’s fibres to resist rot, decay and termites.

28mm - Solid profiles Single T&G for strength and durability. Great for medium to large buildings ideal for seasonal use.

44mm - Thick profiles Double T&G Profile for additional strength and durability. Great for large buildings intended for all year round use.

With the Dorset an 11mm tongue and groove floor and roof is included but you can upgrade to 19mm to suit more intensive use.


11mm: Our standard roof option, this interlocking roof provides a reliable covering for any building. The Tongue and Groove not only gives your building a stronger roof but more premium look and feel.

19mm: Heavy-duty and long-lasting, this roof will provide you with extra insulation for those colder months of the year.


11mm: Our Standard flooring option which provides a durable and provides a solid foundation and underfoot to the building. The 11mm option is ideal for less demanding and frequent usage, suitable for lighter intensity purposes like summer houses and other living spaces containing light furniture. The 11mm tongue and groove timber makes this a solid yet suitable, economic option.

19mm: A premium floor is the perfect choice for higher intensity usage. The construction uses thick 19mm tongue and groove timber, which gives you not only the strength, but better insulation against the cold weather. This specific floor is the perfect option if you’re planning on using the building as an everyday use office, gym or games room with heavy objects.

Single Glazing: Crafted from shatter-resistant plastic (SAN) and suitable for seasonal use. SAN is used for its UV properties and the tougher finish avoids breakages, when compared to the properties of glass shattering. Single glazing is the perfect choice for seasonal buildings such as summerhouses and sheds providing plenty of natural light into the building.

Double Glazing: Created from toughened glass, the double glazing is the ideal option for a building which is used all year round. The extra thickness will provide better insulation and keep your building warmer in those colder months of the year.

Modern: The Modern, simplistic style windows give your cabin a contemporary style. Both window options are exactly the same dimensions, so whichever you choose you’ll have plenty of sun shining through, lighting up your cabin beautifully.

If the building is shorter than 2.5m tall you should not require planning permission, (unless it’s more than 50% of your garden or to be put in your front garden). Planning permission rules can vary by area so we would strongly recommend checking your local council rules before ordering from us.

We do not offer an installation service on any of our buildings, our buildings are designed & made to be easy and simple to assemble. Using the assembly instruction included and with a team of just 2 people and a bit of DIY knowledge you can expect to have your BillyOh building up within a day, or as little as 3-4 hours with some of our smaller buildings.

Our summerhouses and sheds are delivered in easy to assemble panels. For your convenience the panels are no wider than 4ft so they can be easily maneuverable and fit through a standard doorway. Our Log Cabins arrive as individual boards that are designed to slot together.

Your order can be tracked through the account section on our website or by contacting us directly. You will be contacted after your order by our helpful care team to arrange delivery of your building.

We offer a pay by finance option on any purchase over the value of £560.

Our simple finance options allow you to spread the cost of your purchase over 24, 36 or 48 months.Read more about our Pay by Finance option here.