12×8 Summer Houses at a Glance
Size: 12ft x 8ft (approx. 3.6m x 2.4m) · Construction: High-quality redwood timber · Cladding: 19mm nominal timber · Framing: 44mm x 44mm or 70mm x 34mm · Glazing: Toughened glass as standard · Floor: Solid timber floor · Roof styles: Apex and pent designs available.
Uses: Garden office, hobby room, studio, playroom or relaxing garden retreat · Installation: Free installation on Diamond and Platinum summer houses · Insulation: Insulated and fully insulated options available · Bases: Base building service available · Finishes: Coloured paint options available · Customisation: Bespoke sizes, window and door positions, extra rooms and summerhouse-shed combinations available · See before you buy: Full-size summer houses on display at our Surrey show site near Guildford, Woking and Ripley.
Need advice? Our experienced team can help with summer house specifications, insulation, bases, installation, bespoke designs and choosing the right 12×8 summer house for your garden.
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Why Choose a 12×8 Summerhouse?
A 12×8 summerhouse has a nominal footprint of around 96 square feet, or approximately 8.9 square metres. In my experience, this is one of the most useful medium-to-large summerhouse sizes because 12 feet gives you generous width. At the same time, the 8-foot depth provides enough room for substantial furniture without automatically taking over the garden. It can work equally well as somewhere to relax, entertain, pursue a hobby or create a garden office.
I recommend marking out the full 12ft by 8ft footprint before ordering. Walk around it, put some garden chairs inside the marked area and consider where the doors and windows will face. Remember that 12×8 is a nominal size, so always use the individual product dimensions when preparing your base or checking whether the building will fit.
What Can You Use a 12ft x 8ft Summer House For?
A 12ft x 8ft summer house gives you enough floor space to create clearly defined areas within one room. You might have comfortable seating at one end with a desk, hobby table or storage at the other, or use the whole building as a studio, entertaining room, craft room or garden office.
The eight-foot depth is particularly useful because it gives you greater freedom with sofas, desks and tables than narrower six- or seven-foot-deep buildings. If you already know what furniture you want inside, measure it before choosing the exact door and window positions.
Is an 8 x 12 Summerhouse the Same Size?
An 8 x 12 summerhouse will usually describe the same nominal 96-square-foot footprint as a 12 x 8 summerhouse, with the measurements stated in the opposite order. However, manufacturers don’t always list frontage and depth in the same order. Always check the product drawing and exact dimensions, so you know which side of your chosen building is twelve feet and which is eight feet.
Diamond, Platinum or Royal 12×8 Summerhouse?
One advantage of this size is the amount of choice available. The 12×8 summerhouses on this page include Diamond timber summerhouses, higher-specification Platinum buildings and fully insulated Royal garden rooms. They share a broadly similar nominal footprint, but they are designed for different levels of use and should not be compared on price alone.
I would consider Diamond first if you want an attractive, well-made timber summerhouse for relaxing, hobbies and conventional garden leisure use. Platinum becomes particularly interesting when you want a higher specification, more substantial construction or insulation. Royal is aimed at customers wanting something much closer to a fully insulated extra room in the garden.
The important question is not simply which range is best. It is which range suits what you intend to do inside it. You can compare our complete summer houses range or see alternative summerhouse sizes if you are still deciding on the ideal footprint.
Which Diamond 12 x 8 Summer Houses Can I Choose?
The Diamond choices currently available in this size include the Ashington, Bolney Georgian, Keymer Contemporary and Washington Classic. They provide a useful mixture of traditional and contemporary appearances, and bespoke options are available on these models if the standard arrangement does not suit your garden.
For conventional leisure use, these buildings deserve serious consideration before automatically paying for insulation or a garden-room specification. If your main aim is somewhere attractive to sit, entertain friends, read or enjoy hobbies during the more pleasant parts of the year, a good quality traditional timber summerhouse may provide everything you genuinely need.
Which Platinum 12×8 Summerhouses Are Available?
The Platinum range gives you considerably more choice in this size, including apex, pent and transverse designs. Current models include the Fleet Apex, Odiham Pent, Kingclere Apex, Highclere Apex, Twyford Pent, Winchester Apex, Winchester Pent and Winchester Transverse.
The Fleet Apex and Odiham Pent are fully insulated, while several other Platinum buildings can be ordered with full insulation. That makes the Platinum range particularly worth comparing if you are considering a garden office, studio, or hobby room you expect to use for longer periods in cooler weather.
What About a Fully Insulated Royal 12ft by 8ft Summer House?
If you want something substantially more room-like, the current 12ft by 8ft selection also includes the fully insulated Royal Bletchley, Buckingham, Denham and Marlow garden rooms. These should be considered differently from a conventional seasonal summerhouse because their construction and intended use differ.
I would compare the Royal models with the fully insulated Platinum choices when regular year-round use is the priority. There is little benefit in buying more building than you need, but equally I would not recommend trying to turn a relatively straightforward seasonal summerhouse into something it was never designed to be.
Should You Insulate a 12×8 Summerhouse?
Whether insulation represents good value depends mainly on how and when you intend to use your summerhouse. For relaxing on pleasant spring and summer days, conventional timber construction may be all you require. If you intend to spend several hours inside during colder weather as an office, studio or hobby room, insulation becomes considerably more important.
Insulation does not create heat; it helps slow heat transfer. Heating, glazing, ventilation and the construction of the floor and roof also affect comfort. If extended-season or year-round use is important, compare the full specification rather than relying on the word “insulated” alone. You can also browse our insulated summer houses.
Can a 12ft x 8ft Summer House Be a Garden Office?
Yes. 12ft x 8ft is a particularly practical footprint for a garden office because 96 square feet gives you enough space for a proper desk and office chair while still leaving room for shelving, storage, or occasional seating. Depending on the layout, you may also fit two workstations.
If you will work in the building regularly throughout the year, look beyond floor area. Insulation, glazing, heating, ventilation, electricity, lighting and internet connectivity can matter just as much as the dimensions. A conventional summerhouse used for occasional laptop work has very different requirements from a dedicated five-day-a-week garden office.
Why I Look Beyond the Photograph
Photographs are useful for choosing a style. Still, after working with garden buildings since 1979, I know that two attractive 12×8 summerhouses can be very different when you examine how they are constructed. I look at the timber, cladding, framing, floor, roof, doors, glazing and joinery before being distracted by decorative extras.
A single specification figure does not tell the whole story either. Thick-looking cladding needs suitable framing behind it, substantial doors depend on good joinery, and a solid floor needs proper support. I encourage customers to compare the complete construction rather than deciding that one headline measurement automatically makes one building better than another.
Timber, Framing, Floors and Toughened Glass
The applicable summerhouses in our main ranges use quality redwood timber, substantial framing, solid timber floors and toughened glazing. These basic materials are important because they form part of the structure you will use every time you enter the building.
I am particularly interested in the less glamorous parts of a summerhouse because they can tell you a great deal about what you are buying. Look at the floor, open the doors, examine the windows and framing and compare how the roof is constructed. Those details matter long after the excitement of choosing the colour and decorative style has passed.
Apex, Pent or Transverse 12×8 Summerhouse?
A 12×8 summerhouse is available in several roof and layout styles. An apex roof gives the familiar traditional garden-building appearance, while a pent roof can provide a cleaner contemporary profile. Transverse designs offer another arrangement where the relationship between the frontage, ridge and entrance may suit your garden better.
There is no universally correct roof style. Consider the appearance of your home, surrounding fences and planting, but also think practically about where the building will sit, which direction you want to face when inside and whether the layout gives you the wall space needed for your furniture.
Can a 12 x 8 Summerhouse Be Made Bespoke?
Yes. Bespoke alterations are available on selected models, particularly within our Diamond range. Depending on the building, possibilities may include changing dimensions, adjusting the position or number of doors and windows and altering the layout better to suit your garden.
Before requesting changes, decide roughly where your furniture will go. Moving a window or door can sometimes make a much greater difference to usability than adding another accessory. With 12ft of width available, retaining the right uninterrupted sections of wall can be especially valuable for sofas, desks, shelving or hobby equipment.
Can You Combine a 12×8 Summerhouse With Storage?
Selected buildings can incorporate a separate storage area, giving you leisure space and practical garden storage within one overall structure. This can be a sensible option if you want somewhere attractive to relax or work but still need room for tools, garden furniture, bicycles or hobby equipment.
How the 12ft x 8ft footprint is divided will determine how much leisure space remains, so think carefully about which part of the building is more important to you. You can see more options in our summerhouses with shed storage range.
Your 12ft by 8ft Summer House Needs the Right Base
One piece of advice I have given throughout my career is that a quality garden building needs a quality base. A 12ft by 8ft summer house should stand on a firm, flat and level foundation designed for the exact building being installed. An unsuitable or uneven base can prevent the structure from sitting as intended and may affect doors and windows.
Never prepare the foundation simply from the nominal description “12×8”. First, obtain the exact manufacturer’s base dimensions for your chosen model. Our summer house base guide explains the principal options, and our garden building services page provides further information about available help.
Professional Fitting Included
Professional fitting or assembly is included with the applicable summerhouses displayed on this page, subject to the individual model, delivery area, suitable access and the required prepared base. This is an important benefit because assembling a substantial timber summerhouse correctly is a significant part of the job.
If you have restricted access, steps, narrow passageways, walls or any uncertainty about the base, please contact us before ordering. Discussing practical issues beforehand is far easier than discovering them when the installation team arrives.
See a 12×8 Summerhouse Before You Decide
When I started Marina Sheds in 1979, there was no internet, so customers naturally inspected buildings before buying. The internet has made research much easier, but seeing representative summerhouses in person is one of the best ways to understand what you are paying for.
You can feel how solid the floor is, operate the doors, inspect the timber and framing, see the glazing and get a proper sense of internal space. You are welcome to visit our Surrey garden building display site near Guildford, Woking and Ripley. We cannot display every model in every size, so contact us first if you are travelling specifically to see a particular building.
My Garden Building Experience Goes Back to 1979
I’m Robin Antill, founder of 1st Choice Leisure Buildings. I left school at 15 and started my first garden building business in 1979, trading as Marina Sheds. I became involved hands-on with making, selling and supplying timber buildings, and that experience still influences the way I judge garden buildings today.
I sold Marina Sheds in 1990, although unfortunately I did not receive all the money that was due to me from the sale. It was a difficult business lesson, but it didn’t end my involvement in the garden building industry.
From Marina Sheds to Titan Garden Buildings
By 1992 we had broadened our range beyond sheds to include summerhouses, garages, garden rooms and log cabins. That change of direction led to a new name, Titan Garden Buildings. My son Craig joined me in 1992 after studying carpentry at Guildford College from 1990, adding his own practical understanding of timber and woodworking to the business.
Craig’s carpentry training combined well with the experience I had gained from manufacturing, retailing and dealing directly with customers. It reinforced our belief that you need to understand how a garden building is constructed rather than judging it solely by its appearance.
Why We Formed 1st Choice Leisure Buildings
We sold Titan Garden Buildings in 1998. In 2000, Craig and I decided to take a different approach. Rather than manufacture everything ourselves and therefore be restricted to our own products, we wanted to retail quality buildings from selected manufacturers and give customers a genuine choice of different specifications. That was when we formed 1st Choice Leisure Buildings.
That independent approach remains important to me. Someone wanting an attractive 12×8 summerhouse for summer relaxation should not necessarily be sold the same specification as somebody wanting a fully insulated garden office. Being able to offer Diamond, Platinum and Royal choices means we can start with what the customer needs rather than trying to make one building suit everybody.
Craig now runs the day-to-day business, and I am there to support him and the team whenever required. You can read more about my background, Craig and the development of the business on our About 1st Choice Leisure Buildings page.
What More Than 45 Years Has Taught Me About Summerhouses
The first lesson is that size alone does not define a building. Two 12ft x 8ft summer houses can occupy approximately the same area in your garden while having very different timber, framing, floors, roofs, doors, windows, insulation and overall specifications.
The second lesson is to buy for the use you genuinely have in mind. Don’t pay for features you will never use, but don’t buy a relatively straightforward seasonal summerhouse and expect it to perform like a purpose-designed insulated garden room. The right specification matters more than simply buying the cheapest or most expensive option.
Frequently Asked Questions About 12×8 Summerhouses
How big is a 12×8 summerhouse?
A nominal 12×8 summerhouse has a footprint of approximately 96 square feet or about 8.9 square metres. Exact external, internal and base dimensions vary between models, so always use the manufacturer’s detailed measurements rather than the category description when planning your site.
Is a 12ft x 8ft summer house a good size?
For many gardens, it is an excellent size because it provides enough space for substantial seating, hobbies or a practical office without automatically requiring the footprint of a much larger garden room. Mark the dimensions out in your garden before ordering to make sure the proportions work for you.
Is an 8 x 12 summerhouse different from a 12 x 8 summerhouse?
Usually the descriptions refer to the same nominal 96-square-foot footprint, with the dimensions stated in a different order. Always check the individual product plan because manufacturers can describe frontage and depth differently.
What can I fit inside a 12ft by 8ft summer house?
The exact layout depends on the model and its door and window positions, but 12ft x 8ft normally provides room for substantial seating, a table, desk, shelving, hobby equipment or a combination of different uses. The rectangular layout can also allow you to create separate seating and working zones.
Can I get a fully insulated 12×8 summerhouse?
Yes. Fully insulated models are available in this size, including selected Platinum summerhouses and Royal garden rooms. Several other Platinum buildings are available with a full insulation option. Compare the complete wall, floor, roof, and glazing specification based on how you plan to use the building.
Can I use a 12×8 summerhouse all year?
That depends on its construction. A conventional timber summerhouse is primarily designed for seasonal leisure use, although its useful season can be extended. For regular colder-weather use, I recommend an appropriately insulated or fully insulated specification, with suitable heating, glazing, and ventilation.
Can I use a 12×8 summerhouse as a home office?
Yes. Around 96 square feet provides useful space for a desk, office chair and storage, with potential room for additional seating depending on the layout. For year-round use, consider insulation, glazing, heating, ventilation, electricity, and internet connectivity, in addition to floor area.
Can a 12 x 8 summerhouse be made bespoke?
Selected models offer bespoke options which can include alterations to dimensions, doors, windows and layout. If the standard design is nearly right but a door or window is in the wrong position for your furniture or garden, ask us what can be changed before ordering.
Can a 12ft x 8ft summer house include storage?
Selected designs can combine summerhouse space with a separate storage area. This can be a practical solution if you want leisure or working space, plus somewhere for tools, bicycles, or garden equipment, without installing two separate buildings.
Does a 12×8 summerhouse need a base?
Yes. It requires a suitable firm, flat and level base. Don’t assume the foundation should measure exactly 12ft x 8ft; get the precise base dimensions required for your building before starting any foundation work.
Do I need planning permission for a 12×8 summerhouse?
Many domestic summerhouses can be installed under permitted development rights, but this depends on factors including the property, building height, position, proximity to boundaries, amount of garden occupied and intended use. The 12×8 footprint alone does not determine whether permission is needed. Read our summerhouse planning permission guide and check with your local planning authority where necessary.
Is fitting included with these 12×8 summer houses?
Professional installation or assembly is included with the applicable products shown, subject to the individual building, delivery area, suitable access and the correct prepared base. Check the specific product details for the exact terms applying to the summerhouse you choose.
My Advice Before Buying Your 12×8 Summerhouse
After working with timber garden buildings since 1979, my advice is simple: decide what you genuinely want to do inside your summerhouse, mark the 12ft x 8ft footprint out in the garden, plan the furniture and door positions, compare the actual construction and make sure the correct base is ready before installation. A 12×8 summerhouse is a very versatile size, but the best specification depends on how you intend to use it.
Craig, the team and I are here to explain the differences rather than automatically steer you towards the most expensive building. Tell us what you want from your summerhouse, and we can help you compare the Diamond, Platinum and Royal choices, insulation, bespoke design, integrated storage, bases and installation.
Robin Antill
Founder, 1st Choice Leisure Buildings
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