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12x10ft Summer Houses

Stretch out, relax, and make the most of summer in your garden with a 12’x10’ or 10’x12’ summer house. These larger buildings are catered to giving you room to relax and decompress, with big interiors that can be filled with fresh summer air and bright sunshine through their expansive floor-to-ceiling windows.

If you’ve got questions about sizes or positioning, our summer house buying guide is full of information. We also offer quick, safe and free delivery to most UK postcodes through our very own distribution network.

BillyOh 8x8 Picton Corner Summer House
Corner Summerhouses next icon
Insulated Summer House
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Cheap Summerhouses: BillyOh Harper Tongue and Groove Apex Summerhouse
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Log Cabins Summerhouses: BillyOh Carmen Log Cabin Summer House
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A small ivy summerhouse viewed at a close angle
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Large Summer House
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PRICE
0
5000

BillyOh Switch Pressure Treated Pent Summerhouse
BillyOh Switch Pressure Treated Pent Summerhouse
-37%
From £961.00 £1,056.00
£672.70 with SUNNY30
BillyOh Petra Tongue and Groove Reverse Apex Summerhouse
BillyOh Petra Tongue and Groove Reverse Apex Summerhouse
-30%
From £1,330.00
£931.00 with SUNNY30
BillyOh Tessa Tongue and Groove Reverse Apex Summerhouse
BillyOh Tessa Tongue and Groove Reverse Apex Summerhouse
-30%
From £1,896.00
£1,327.20 with SUNNY30
BillyOh Holly Tongue and Groove Apex Summerhouse
BillyOh Holly Tongue and Groove Apex Summerhouse
-30%
From £1,511.00
£1,057.70 with SUNNY30
BillyOh Darcy Log Cabin Summerhouse
BillyOh Darcy Log Cabin Summerhouse
-31%
From £1,627.00
£1,138.90 with SUNNY30
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Find a Summerhouse size that fits

Not sure what size is best? Check out our summer house buying guide

7x7 8x10 10x8 11x7 12x8 12x10

Types of Summer House

The classic garden house, created from timber and built for relaxation. A place for peace and quiet, a place to spend those long, sweltering summer days. A typical design maximises the amount of natural light that reaches the interior and keeps the separation between outdoors and in to a minimum. But when it comes to style and shape, our wide variety of buildings gives you the freedom to pick to your preference.
The heavy-duty cousin of a regular building, you’ll find these log cabin summerhouses provide comfort that can be enjoyed throughout the year. While still providing a dedicated place to relax, and full of features that let you make the most of summer, the thicker log walls afford a more comfortable interior better suited for the colder months of the year and adding to the usability of your summerhouse.

Utility is guaranteed with a summerhouse shed that serves two functions in one. Unlock both a relaxing garden experience and a practical outdoor storage unit in one convenient building.

The side store is included with:
Penton Corner Summerhouse
BillyOh Tianna Log Cabin Summerhouse with Side Store

In-built insulation expands what you can do with a summerhouse. It becomes so much more than a place to relax, with the ability to use the building as an office or studio space. With reduced heat transfer due to the insulate features - like insulation foil and double glazing - these insulated summerhouses aren’t just for summer, but can become a whole new room in your home.
Made for those awkward spaces and unused corners - add a place to relax and unwind. Specially designed for right-angle spaces, a corner summerhouse is the perfect way to start making the most of your garden by adding a place to relax. The design of these buildings is great for sunlight, with windows on two sides to help make the interior bright and airy.

FAQs

Usually, no. Most UK properties are allowed summer houses as 'permitted developments' with no planning permission required.

Exceptions (where you MIGHT need planning permission) include:

  • Listed properties and locations of 'outstanding natural beauty
  • Structures exceeding 2.5 metres height on the eaves (our summerhouses don't exceed this)
  • Summerhouses placed in the front garden
  • Sheds exceeding more than 50% of the garden space

There are some other rules, so check out our guide to planning permission for summerhouses to get a full understanding.

Most summer houses are provided as panel-based building kits that are designed to be easy to assemble with ordinary DIY tools. Each summer house kit has instructions provided, but here is the basic process:

  • Place the floor bearers
  • Lay tongue & groove floorboards on top of the floor bearers.
  • Fit the bottom rails and erect the wall panels.
  • Insert the window glazing and secure with beading. (Additional silicone sealant recommended.
  • Position the roof gables and purlins.
  • Fix the roof boards.
  • Felt the roof.
  • Attach the doors.
  • Enjoy your new summer house!

Note: The building experience is different with a log cabin summer house.

We use Scandinavian spruce, never cheap pine. The trees are replanted after the timber is acquired.

Our BillyOh wooden buildings are guaranteed for 10 years against rot, decay and insect infestation. Good maintenance can see these buildings last many years longer than the guarantee.

If you buy a pressure treated summerhouse, the guarantee is extended to 15 years. Pressure treatment is a process where wood preserver is forced deep into the timber by a high-pressure machine. The preservative protects the wood from moisture, rot and insects, keeping it healthier and stronger for longer.

Traditional summerhouses are perfect for lounging in the garden, keeping you cool on a hot day, and allow you to continue enjoying your outdoor space even if it rains.

As an extra room, summerhouses can also be used for other activities, especially those that come with thicker walls. Some models can be used as a garden office, for instance.

You will find even more potential from a large summer house. If you have the space to spare, be sure to check out our larger size options.

For more inspiration, check out our summerhouse ideas guide.

Traditionally, summerhouses are designed as sitting areas for enjoying the garden during the warmer half of the year. They also provide a way to enjoy your garden during rain or cold winds.

While many models have thin walls, meaning they do not hold onto heat through the colder months, a log cabin summer house offers an alternative if you're looking for a room to use for more of the year.

The size of your summer house will depend on what you plan to use it for and how much space you have. Remember that it needs to take up less than half your garden, in order to avoid the planning permission legal process. You can find out more about that in our guide to summerhouse planning permission.

One of the most popular sizes is a 12x8 summerhouse (measured in feet, equating to about 3.6 x 2.4 metres). This size provides ample room for it to be used as a relaxing family lounge area, a garden office, a garden gym, or a host of other purposes.

The best approach is to decide where you would like the summerhouse to stand in your garden and measure the width and length of that space with a tape measure. This will give you an idea of the size range you should be looking at.

Our summerhouses start from less than £800. If you need to budget carefully for your building, we have a range of cheap summerhouses that may be the most accessible for you.

Don't forget you can also use our finance options to make it easier to afford your new building.

Yes, all summer houses need a solid, level base to ensure stability, prevent water damage, and extend the life of the building. Do not build directly onto soil, grass, mulch or loose gravel. A poor base can lead to warping, misaligned doors, or structural issues over time. Not sure which type you need? Read our guide on how to choose the best summerhouse base for expert advice.

Can a 12 x 10 Summerhouse Be Too Big?

Like the rest of our large summerhouses, these sizes aren’t intended for gardens where space is limited. If you have a small garden - or even one where a 12’x10’ sized building would take up more than 30% of the existing space - this size may be too large. 

Adding a summerhouse to your garden can help you make the most of the space, but if the building is too big for the surroundings it can leave your garden feeling cramped - which may make it feel less inviting overall.

When done right, not only will a 12x10 summerhouse give you the means to make the most of your garden - it’ll also increase the value of your home.

Help and Contacting Us

If you need assistance, there are a few places to find it. Our help centre has answers to lots of questions you might have. But if you can’t find what you need there you can get in touch with us using our contact form - or by calling us on 01909 768840.

Customer Testimonials

Elodie's Picton Corner Summerhouse
Elodie's Picton Corner Summerhouse
It’s allowed us to spend so much more time outside no matter what the weather. We’ve even been out there in the winter with our coats and blankets on, it really is usable all year!
Stacey's Renna Summerhouse
Stacey's Renna Summerhouse
The large windows and double doors provide an uninterrupted view of the garden and plenty of room inside to enjoy the view. My favourite thing - hands down, has to be the ability to sit and enjoy a space away from home.
Izzie's Holly Summerhouse
Izzie's Holly Summerhouse
I just loved the design of the BillyOh Holly summerhouse from the outside and I wanted something that was the same width and length to fit perfectly into the corner of my garden.
Emma's Bella Summerhouse
Emma's Bella Summerhouse
It’s allowed us to have a space away from the house to enjoy with friends so we don't wake the kids up! Also, over the last year it’s allowed us to feel like we are sort of going out, even if it is just to the bottom of the garden!
Farayi's Penton Summerhouse
Farayi's Penton Summerhouse
We chose this building for storage and somewhere to sit and enjoy the garden. We now have a solution for both which is just amazing. It’s really allowed us to sit and admire the view and still be in the garden all year round.
Lisa's Tessa Summerhouse
Lisa's Tessa Summerhouse
It had more windows than everything else, and the dual aspect doors made for a flexible space. We chose Garden Buildings Direct because of the good value and a good selection of summerhouses.