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BillyOh Renna Tongue and Groove Corner Summerhouse

The Renna Corner Summerhouse is a versatile building with a modern, pent design. This stylish summer house offers the perfect space for the whole family to relax. The tall design and large, open windows give the building a spacious feel inside, while the building takes up minimal space in your garden with its corner design. Built from robust Tongue & Groove panelling and complete with Floor, Roof and Felt as standard.

Size measured in feet

2. Customise

Just Bearers - Pre-cut pressure treated timbers that are designed to lock out ground moisture and still allow the air to circulate underneath your shed.

Eze Base - Solid stable pressure treated base to your shed and can even fill it in with concrete. This base ensures your garden building has a rigid, level base.

EcoBase Fastfit Full Base - A foundation grid system used as a base for garden buildings. Quick and easy to assemble

Eco Base

An alternative to using a concrete base or slabs. A grid system made from recycled plastic which can be filled with gravel to create a sturdy base for your building.

Shelving is a great way of increasing the usable space in your building by giving you another storage level. Whether your building is for tools, gardening equipment or your own personal workshop shelving will help you keep a tidy, organised space. Depending on which option you choose, your shelving will cover one side, two sides or all around. Each shelf is 21cm deep and can be placed at any height.

3. Add optional extras

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

Do you need high quality padlocks, paint, silicone and assembly kits?

This multipurpose wood stain is designed to provide protection to and weatherproof all types of timber, ideal for a garden building. With a number of different colour options available you can choose the perfect colour to compliment your garden. The wood stain is high quality and can be used on all types of timber products, such as furniture and buildings.
Cost-effective and waterproof wood stain that enhances the natural beauty of the wood. It is used and recommended by professionals as, unlike a lot of competitor brands, it can be applied to old surfaces, planned (finished) and rough sawn timber.
Please note the colours are not pre-painted on the product before delivery, and are supplied in a tub of paint.
Optional Extras:
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  • Convenient corner door positioning
  • Large windows and open indoor space
  • Choose between left or right door placement
  • 11mm Tongue and Groove Walls, Floor and Roof
  • Durable SAN Window Glazing
  • Extra tall design for easy mobility
  • Complete with felt, fixtures and fittings
  • Base Coat Treated for Transit
Overall Dimensions (Includes Roof Overhang)
  • (A) Width: 3.34m (11ft)
  • (B) Depth: 2.15m (7ft1)
  • (C) Height: 2.09m (6ft10)

Why buy the Renna Summerhouse?

10 Year <br/>Anti-rot Guarantee
10 Year
Anti-rot Guarantee

Protects the wood on your building against rot and decay.

UK <br/>Manufactured

Over 20 years of experience in design and production.

Convenient <br/>Corner Building
Corner Building

Designed to sit perfectly in the corner of your garden.

Easy Assembly <br/> with Modular Panels
Easy Assembly
with Modular Panels

Quicker and easier to build, the Renna is delivered in handy pre-assembled panels.

Key Features

Durable Tongue & Groove Throughout

Constructed using high-quality timber panels that interlock together, Tongue and Groove cladding creates a strong, stable and weatherproof structure with a stylish finish.

Wide Double Doors

Featuring a wide double door entrance, you can conveniently move any of your larger furniture or items with ease.

High Strength SAN Styrene Glazing

Durable Single SAN glazing included as standard. SAN is used for its UV properties and the tougher finish avoids breakages.

BillyOh Renna Tongue and Groove Corner Summerhouse
Pent Roof

The pent roof of this garden room makes it a stylish addition to any garden while offering excellent head height and versatile use options without taking up too much valuable garden space.

Tongue and Groove Roof & Floor

The heavy duty and hard-wearing board provides a solid underfoot and robust ceiling.

Green Mineral Felt

Quick and easy to apply, our premium mineral felt is durable and protects your building against harsh weather.

Frequently Asked Questions


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

  • 11mm Tongue & Groove walls

  • Single glazing

  • Pre-constructed 11mm Tongue & Groove floor

  • Pre-constructed 11mm Tongue & Groove roof

  • Single glazed double doors

  • Green mineral roof felt

  • All fixtures and fittings

  • Comprehensive assembly instructions

Spray Treated: Our sheds and summerhouses get a beautiful golden brown spray treatment before leaving the factory in order to preserve the quality of the wood up until the delivery. As this only lasts through the transit stage, we do advise treating the wood after installation to protect and preserve it, as well as annual maintenance.

Pressure Treated: For an extra level of protection, you can opt for a pressure treated building which is an effective way of keeping the wood long lasting. This is an extra step in the manufacturing 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. When you upgrade to Pressure Treatment, the guarantee is extended from 10 to 15 years.

All garden buildings should be assembled on a firm and level base. A base will ensure your building has a solid, long-lasting and well-drained foundation.

If you want to build your own base, from a sturdy material such as concrete or flagstones, you can find minimum dimensions for each size of this building in the tech specs. In order to protect your building from moisture, you should leave a 2ft gap around the exterior of your building, so remember to take this into consideration when laying any sort of base.

Our robust and simple to use EcoBase provides you with a firm, long-lasting foundation with suitable drainage for your garden building. It is quick and easy to install through the use of snap connectors that link the grids to each other.

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

We do not offer an installation service on any of our buildings, as they are designed to be easy and simple to assemble. Using the digital assembly instructions included in your order confirmation and with a team of at least 2 people, the handy pre assembled panels mean you will have your BillyOh building up in no time!

Our sheds and summerhouse 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. Glazing and any additional wood is delivered in separate, clearly labeled packages.

Your order can be tracked through the account section on our website or by contacting us directly. You will be contacted after your order via your online account, email or text to provide updates on delivery dates.

BillyOh Renna Corner Summerhouse

The Renna is a fantastic building to optimise your outdoor space. This building has the option for the doorway to be placed on the left or right corner, allowing the building to fit seamlessly into the corner of a garden. This corner summerhouse has tall glazed windows on the front walls of the building, giving you an interior filled with natural light and panoramic views of your outdoor space.

This makes the building perfect for use as a home office, a summerhouse bar or even just a great place to relax at home. The pent roof follows on from the tall windows and doors with a very modern style and beautiful finish around the front sides of the building.

Garden Summer House

As a large summerhouse, the Renna offers you the space to make it your own with home accessories. Many customers have made their Renna into a beautifully painted garden building, filled with comfortable seating, perfect for hosting get-togethers. Not only does this garden room have great versatility, but it also comes with a robust 11mm tongue and groove floor and roof included as standard. It also included green mineral roof felt, increasing your building's weather resistance.

There are many options to personalise your Wooden summerhouse to create your perfect garden room for inspiration or to get some fantastic garden bar ideas. Please take a look at our customer images below.

Tongue and Groove Corner Cladding

For dependable quality, we use tongue and groove boards when constructing our BillyOh Renna. With a tongue and groove floor and roof, these groove panels offer a tight seal against water ingress whilst providing a sturdy build. And, with a roof overhang that provides great protection from the rain, your new summer house will easily stay strong against the elements.

Customisable Door Placement

Not only is the Renna a premium corner summerhouse, but it's also built to be customisable for whatever kind of garden corner you have. With the option to choose the placement of the double doors, you can maximise your living space and get maximum value for money on this attractive summer house.

Corner Design

Corner summer houses are the perfect solution when you need a building to fit your garden space. The Renna's corner style makes awkward gardens an absolute breeze, while its double doors allow you to get the most out of our contemporary summer houses. With tons of internal space and a tall roof height, you'll be buying a corner summer house that gives you the room you need to relax.


Each tongue and groove garden building in our wide range of summer houses comes with our BillyOh 10-year guarantee against insect infestation, rot, and decay. We do suggest, though that you re-treat your Renna summerhouse for annual maintenance.

Assembly Service

We don't offer an installation service simply because putting your BillyOh building together should be a doddle. Just follow the assembly instructions provided with your order (we even have an assembly kit on sale if you need tools) and have your Renna on a level base in a matter of hours.

Planning Permission

The eaves height and ridge height of the Renna summerhouse satisfy planning regulations such that you won't require planning permission unless:

  • Your Renna is intended for permanent residential use
  • It'll take up more than 50% of your garden
  • It is going to be built past the foremost wall of your house

You can always check with your local council as rules for planning permission may vary.

Garden Buildings Direct - Delivery

Get your Penton corner summerhouse or whatever outdoor building you settle on sent to your delivery postcode in as little as 1 - 4 weeks! With fast and free delivery to most of mainland UK, either order online today or get in touch with our friendly team.

Dimensions 11 x 7 Door on Left 11 x 7 Door on Right
Width 334cm 334cm
Depth 215.2cm 215.2cm
Width (Internal) 320cm 320cm
Depth (Internal) 202.8cm 202.8cm
Ridge Height (Inc Floor) 209cm 209cm
Eaves Height (Inc Floor) 176.1cm 176.1cm
Ridge Height (Internal) 199.7cm 199.7cm
Eaves Height (Internal) 175.4cm 175.4cm
Door Opening Size (w x h) 117.2cm x 172.6cm 117.2cm x 172.6cm
Door Width 58.3cm 58.3cm
Door Height 172cm 172cm
Minimum Base Width 334cm 334cm
Minimum Base Length 215cm 215cm
Window Dimensions 126.1cm x 363.5cm 126.1cm x 363.5cm
Glazing Thickness 0.18cm 0.18cm
Frame Thickness (w x d) 2.8cm x 2.8cm 2.8cm x 2.8cm
Materials 11 x 7 Door on Left 11 x 7 Door on Right
Glazing Material Styrene Styrene
Floor Material Tongue & Groove Tongue & Groove
Roof Material Tongue & Groove Tongue & Groove
Features 11 x 7 Door on Left 11 x 7 Door on Right
Door Style Double Doors Double Doors
Windows 6 Windows All Fixed 6 Windows All Fixed
Factory Basecoat Treatment Red Cedar Water Based Treatment for Transit Red Cedar Water Based Treatment for Transit
Material Wood Wood
Roof Style Corner Pent Corner Pent
Cladding Style Tongue and Groove Tongue and Groove
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.

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