L-Shaped Flat Roof Log Cabin


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L-Shaped Flat Roof Log Cabin

From £12,144

Ideal for creating space in the discarded corner of the garden, the high-quality L-Shaped Log Cabin can be customised to suit your garden.

Available open-plan or split into separate rooms, the corner building is a popular choice for a multi-purpose garden getaway!

4.8/5 Based on 109 reviews


6m x 3.5m

See details & spec for more information on available sizing.

*All prices include VAT. For assembly between 50-75 miles from BA14-0DT add 20%. For 75-100 miles, add 30%. Within M25 and over 100 miles, add 40%.

Size guide Enquire

Included as standard

  • 6m x 3.5m L-Shaped Cabin
  • 2m x 1m Storeroom
  • 19mm Tongue & groove floor
  • EPDM rubber roof membrane
  • Delivery to the UK via articulated lorry - delivery charges for a smaller vehicle will apply where access is restricted

Optional extras

*Only available with Garden Affairs assembly

Total cost:

Building Cost


L-Shaped Log Cabin Features

44mm Timber walls

44mm thick slow-grown, Northern European spruce timber walls as standard.

Available For DIY Assembly

The DIY-friendly Log Cabin can make for a fun hands-on project. If DIY isn't for you, we have a team of expert installers.

2.5m High Flat Roof

The total roof height is 2.5m high for comfortable internal space that won't (in most cases) require planning permission.

Durable EPDM Rubber Roof

The flat roof is finished with a durable EPDM rubber membrane and aluminium trim. The roof is sloped 2-3 degrees to help water run-off.

Double Glazed Doors & Windows

High-quality timber doors and windows are used throughout the building, all double-glazed as standard.

Fully Customisable

Create your perfect garden cabin with a fully bespoke design. Change the height, size, doors, windows and shape.


This uniquely shaped log cabin features an L-shaped corner fits neatly into the corner of the garden.

  • Details & Spec
  • Custom Options
  • Advice & Resources
  • FAQs

Details & Spec

The quality L-Shaped Log Cabin is constructed from heavy-duty, 44mm timber walls with a 19mm timber floor. All timber is from sustainable sources and offers a traditional wood finish that can be stained or painted to suit your taste.

The Log Cabin L-Shaped has a contemporary flat roof under 2.5m high to comply with current planning restrictions. A green sedum roof is also available for added insulation & eco-friendliness!

Tongue and groove walls fasten together with sturdy roof joists creating the ceiling framework and building shell. The ceiling is tongue and groove timber boards, which are secured before an EPDM rubber roof is laid and finished with aluminium trim. Doors and windows slot into place and the 19mm tongue and groove floor is fixed to pressure-treated floor joists.

The L-shaped cabin includes double-glazed doors & windows as standard and the design can be fully customised to suit your space.

Specifications Size
Wall thickness 44mm
Roof height 2500mm
Eaves overhang 250mm
Base dimensions 4m width x 2.5m depth + 2m width x 1m depth

1x Glazed double door

1x Solid single door


1x Opening, top-hung window

3x Fixed, letterbox windows

L-Shaped Log Cabin Options

The L-Shaped Log Cabin is fully customisable to suit your needs. Pick between the following custom options to create your dream studio. 


The L-Shaped Log Cabin can be customised in half metre increments.

Doors & windows

Pick between a range of door and window options, all double-glazed and timber framed.


Upgrade from the standard 19mm tongue and groove floor to an oak effect or grey oak laminate/vinyl floor.


The doors and windows can be painted in a range of factory colour options. The walls can also be stained in your colour of choice as an upgrade.

Electrical spec

On Cabins that we install, we offer full electrics or first fix wiring ready for your electrician.

Multiple rooms

Add a partition wall to your corner cabin to create two separate rooms, or keep the open-plan design.


Is the L-Shaped Log Cabin customisable?

Yes. We can work on a design that suits your garden, making changes to the size, doors, and windows as you please.

Do I need planning permission?

In most cases, no. The L-Shaped Log Cabin is made to 2.5m in height to help comply with permitted development rights. Click here to read more on planning requirements.

Can I sleep in the cabin overnight?

No. The L-Shaped Log Cabin can include insulation to create a comfortable environment for year-round use during the day and evenings, but the building is not suitable for overnight stays or residential purposes.

Design your own L-Shape Cabin

Try our easy-to-use 3D design tool and watch your dream garden room come to life with the augmented reality feature!

Design tool

Examples of L-Shape Log Cabin designs

Below are some examples of alternative designs and configurations for the L-Shaped Log Cabin.

Not sure which Log Cabin you want?

Get in touch with our friendly team of experts who will listen to your ideas and make a L-shape Log Cabin for you.

Nick Tuftnell profile image

Nick Tuftnell

(3 years ago)

Very friendly helpful and knowledge staff.

Rupert Miles profile image

Rupert Miles

(7 years ago)

Just had fitted a garden office by Garden Affairs - it looks and is a-maz-ing. Couldn't be happier both with the service and the office. Worth going t... Read more

Claire Mitchell profile image

Claire Mitchell

(3 years ago)

I’m so pleased with my Proline studio, it’s brilliant. The build quality is great and it’s everything I wanted it to be. All the guys who were i... Read more

4.8/5 Based on 109 reviews

What our customers say…

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Mr Moore - Bristol

“ Thank you all for your help with the summerhouse. We love it! The boys were lovely to have around and we were so pleased to have them do the build. They are a credit to Garden Affairs.… Read more

Ms Newell - Bath

“ Thank You, for my wonderful Garden Room. I am so pleased with the 'room of my own' , I spend as much time as possible in it ! I sat in the warm and watched the snow we had in March… Read more

Mrs Hanratty - Chippenham

Contact us about the L-Shaped Flat Roof Log Cabin

Please include as much information about the size and style of building you would like.

Alternatively - you can visit our showroom to see some of our garden buildings.

01225 774566
4.8/5 Based on 109 reviews

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