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Home » Summer Houses » Summer Buildings By Size » 20 x 8 Summerhouse

20 x 8 Summer House

Extra-wide 20×8 summerhouses with generous space for relaxing, working, or entertaining. Stylish, sturdy wooden buildings perfect for larger UK garden areas.

FREE Installation
Toughened Glass
Bespoke Options
Coloured Paint Option
Insulation Options
Base Building Option
Garden Room Showroom
Wooden Floor & Roof
Double Door Option
Apex or Pent

Configure Building Free Online Quote
Price query? Showroom Del Areas
1st Choice – Known For Quality – Loved For Design
★★★★★Trustpilot ReviewsWhiteSpark Feedback

A wooden summerhouse with shed with double doors and windows. Perfect for outdoor storage and hobbies.

All of our 20ft x 8ft summer houses are made from redwood deal (not cheap whitewood) with solid wooden floors and include free installation. Available in sizes from 7×5 right up to 28×16. Bespoke designs available. Toughened glass is standard. Base building service. Free local site surveys. VIEW at our summer house display site, near Guildford, Woking and Ripley in Surrey.

Showing all 15 results

  • Special Deals A green wooden summerhouse with white trim and doors. A garden shed with large windows.
    From £3399
    8x6 to 16x12
    2.4 x 1.8m to 4.8 x 3.6m
    Free Assembly
    Colour Paint Finish Option
    Full Insulation Option

    Platinum Kingclere Apex

    Platinum Kingclere Apex

    View Product
  • Special Deals A wooden garden shed with glass doors and windows, surrounded by a beautifully maintained garden.
    From £3589
    8x6 to 16x14
    2.4 x 1.8m to 4.8 x 4.2m
    Free Assembly
    Colour Paint Finish Option
    Full Insulation Option

    Platinum Highclere Apex

    Platinum Highclere Apex

    View Product
  • Special Deals A small grey garden building with white trim and doors. The building has a garden path leading to it.
    From £3928
    8x6 to 28x16
    2.4 x 1.8m to 8.4 x 4.8m
    Free Assembly
    Colour Paint Finish Option
    Full Insulation Option

    Platinum Winchester Apex

    Platinum Winchester Apex

    View Product
  • Special Deals A wooden garden summerhouse with double doors and windows, surrounded by a garden.
    From £3928
    8x6 to 28x16
    2.4 x 1.8m to 8.4 x 4.8m
    Free Assembly
    Colour Paint Finish Option
    Full Insulation Option

    Platinum Winchester Pent

    Platinum Winchester Pent

    View Product
  • Special Deals A wooden garden shed with double doors and windows. Made in Britain.
    From £3928
    8x6 to 28x16
    2.4 x 1.8m to 8.4 x 4.8m
    Free Assembly
    Colour Paint Finish Option
    Full Insulation Option

    Winchester Transverse

    Winchester Transverse

    View Product
  • Special Deals A dark grey garden shed with a double door and two windows, set in a beautiful garden with flowers and trees.
    From £7869
    8x6 to 20x12
    2.4 x 1.8m to 6.0 x 3.6m
    Free Assembly
    Colour Paint Finish Option
    Fully Insulated

    Royal Bletchley Garden Room

    Royal Bletchley Garden Room

    View Product
  • A dark grey garden shed with a double door and two windows, set in a beautiful garden with flowers and trees.

    Royal Bletchley 8×6 Garden...

    Royal Bletchley 8×6 Garden...

    View Product
  • Special Deals A black Royal Bletchley pent 8x6 garden room with a glass door and two windows, surrounded by flowers and trees.
    £7,849 Fully Insulated 8ft x 6ft (Also, sizes up to 20 x 6) Free Assembly & Delivery* Double Glazed as Standard UNDER 2.5m Tall Choice of Colours UPVC Doors & Windows Apex Roof Option

    Royal Bletchley 8×6 Garden...

    Royal Bletchley 8×6 Garden...

    View Product
  • Special Deals A grey Royal Bletchley pent garden room with a black door and windows. A beautiful garden surrounds the shed.
    £9,019 Fully Insulated 8ft x 8ft (Also, sizes up to 20 x 8) Free Assembly & Delivery* Double Glazed as Standard UNDER 2.5m Tall Choice of Colours UPVC Doors & Windows Apex Roof Option

    Royal Bletchley 8×8 Garden...

    Royal Bletchley 8×8 Garden...

    View Product
  • Special Deals A green Royal Bletchley pent garden room with a white roof and paved path leading to the door. The shed has a window and a door.
    £11,124 Fully Insulated 10ft x 10ft (Also, sizes up to 20 x 10) Free Assembly & Delivery* Double Glazed as Standard UNDER 2.5m Tall Choice of Colours UPVC Doors & Windows Apex Roof Option

    Royal Bletchley 10×10 Garden...

    Royal Bletchley 10×10 Garden...

    View Product
  • Special Deals Royal Bletchley pent garden room with cream coloured walls and brown trim. The shed has a glass door and window.
    £13,429 Fully Insulated 12ft x 12ft (Also, sizes up to 20 x 12) Free Assembly & Delivery* Double Glazed as Standard UNDER 2.5m Tall Choice of Colours UPVC Doors & Windows Apex Roof Option

    Royal Bletchley 12×12 Garden...

    Royal Bletchley 12×12 Garden...

    View Product
  • Special Deals A blue Royal Buckingham 10x6 Garden Room with large windows and a flat roof
    £7,859 Fully Insulated 8ft x 6ft (Also, sizes up to 20 x 6) Free Assembly & Delivery* Double Glazed as Standard UNDER 2.5m Tall Choice of Colours UPVC Doors & Windows Apex Roof Option

    Royal Buckingham 8×6

    Royal Buckingham 8×6

    View Product
  • Special Deals Black Royal Buckingham 10x6 Garden Room with glass doors and a flat roof, surrounded by garden
    £9,009 Fully Insulated 8ft x 8ft (Also, sizes up to 20 x 8) Free Assembly & Delivery* Double Glazed as Standard UNDER 2.5m Tall Choice of Colours UPVC Doors & Windows Apex Roof Option

    Royal Buckingham 8×8

    Royal Buckingham 8×8

    View Product
  • Special Deals A Royal Buckingham 10x10 Garden Room with glass doors and windows, surrounded by a well-manicured lawn and garden.
    £11,409 Fully Insulated 10ft x 10ft (Also, sizes up to 20 x 10) Free Assembly & Delivery* Double Glazed as Standard UNDER 2.5m Tall Choice of Colours UPVC Doors & Windows Apex Roof Option

    Royal Buckingham 10×10

    Royal Buckingham 10×10

    View Product
  • Special Deals Royal Buckingham 12x12 Garden Room with large windows and a patio area. The room is made of dark wood and glass.
    £14,304 Insulated 12ft x 12ft (Also, sizes up to 20 x 12) Free Assembly & Delivery* Double Glazed as Standard UNDER 2.5m Tall Choice of Colours UPVC Doors & Windows Apex Roof Option

    Royal Buckingham 12×12

    Royal Buckingham 12×12

    View Product
Configure Building Free Online Quote
Price query? Showroom Del Areas
Painted summerhouse
Insulated Range
Combo summer house Shed
Shed show rooms

View More Summerhouse Images
Click on images below to see larger versions of summerhouses
image of Diamond Arlington Summer building
image of Diamond Ashington sun room
image of Diamind Bolney summer building
image of Diamond Bracklesham octagonal building
Click on images below to see larger versions of summerhouses
image of Diamond Eastbourne Summer building
image of Diamond Keymer apex or pent
image of Diamond Washington summer building
image of Diamond Worthing corner building
l
Click on images below to see larger versions of summerhouses
image of Platinum corner building
image of Platinum corner summerhouse
image of Platinum Fleet Apex Insulated Luxury summerhouse
image of Platinum Hamble corner building
Click on images below to see larger versions of summerhouses
image of Platinum Highclere summer building
image of Platinum Kingclere summerhouse
image of Platinum Norton Octagonal summerhouse
image of Platinum Pent Odiham Insulated summerhouse
Click on images below to see larger versions of summerhouses
image of Platinum Twyford summer building
image of Platinum Winchester Georgian summerhouse
image of Platinum Winchester pent summerhouse
image of Summerhouse with side shed
Click on images below to see larger versions of sumerhouse shed combos
image of apex summerhouse with side shed
image of Bespoke pained summer building shed
image of bespoke summerohuse shed store
image of combined made to measure shed summerhouse
Click on images below to see larger versions of combination garden rooms with shed
Choose from a large range of Sadolin colours and make your new Diamond painted summerhouses special.
We recommend OPTIONAL Demidekk Ultimate log cabin paint range which can be colour matched to suit. See examples in our photo gallery.
Image gallery of painted summerhouses - 1st Choice Leisure Buildings
Royal treatment chart available for pre-painted summ houses - 1st Choice Leisure Buildings
Image gallery of painted summerhouses - 1st Choice Leisure Buildings
Royal treatment chart available for pre-painted summ houses - 1st Choice Leisure Buildings
Please note that all colour shown are indicative only and will vary depending upon the light on the day the photo was taken. Additionally all screens will display the image differently. If exact colour is essential then please order a sample pot.

Why Choose A 1st Choice 20 x 8 Summer house?

Choosing a 20×8 summerhouse from 1st Choice Leisure Buildings offers a blend of quality and functionality tailored for diverse outdoor needs. Its spacious design maximises usable area, making it ideal for relaxation, hobbies, or as a guest space.

Constructed with premium materials, the product ensures durability against the elements, while customisable options allow personalisation to suit your style. The 20×8 size fits comfortably in most gardens, enhancing the landscape without overwhelming it.

Additionally, 1st Choice’s commitment to customer service ensures a smooth purchasing experience from selection to installation, making it a practical choice for any homeowner.

One satisfied customer remarked, “The team at 1st Choice made the entire process seamless and worry-free. Our new summerhouse was delivered and installed without a hitch!” This testimonial highlights our dedication to customer satisfaction and reinforces why more homeowners are choosing us for their outdoor building needs.

Choosing A 20ft x 8ft Summer House From 1st Choice Leisure

When choosing a summer building, you need to check the specifications to ensure it will have the strength to withstand the elements. So always check the thickness of the timber, whether it’s made from redwood or the cheap, inferior whitewood, and how thick the framing is, etc.

Are the doors and windows‘ joinery made, meaning they will last a long time? Does it have toughened glass for safety, or is it imperfect horticultural glass, plastic, or perspex? These are all important questions.

Insulating My Summer Building

To make the most of your new 8×20 building, it’s a good idea to have it lined and insulated for year-round use. Imagine settling into a snug, warm space on a crisp winter’s evening, shielded from the chill thanks to proper insulation.

Don’t miss out on creating your personal cosy retreat for this upcoming winter. Doing so will keep the building cooler in summer and warmer in winter. It’s possible to do this yourself if you feel confident.

However, there is an option to do this for you on all the Platinum buildings. It can be seen as a luxury, but you will be glad you did on those hot summer days or cold winter days. Just contact us, and we will arrange a free quote for you.

Free Installation Included As Standard On All Diamond & Platinum Buildings.

On many of the buildings available on the web, you will find that they will deliver them to your house and leave them for you to build. You can save a little money this way, but you must assemble it yourself. That’s OK if you are a good DIYer, but it will still be hard work.

The best option is to take advantage of 1st Choice’s FREE assembly option on the Diamond and Platinum buildings. They will do all the hard work – all you need to do is build a level base for it to go onto. And they can arrange that for you if you wish.

This way, you can be sure your new building will be built correctly, and all you need to do is enjoy it.

This 20×8 Summerhouse Can Be Bespokely Made Just For You

We have a wide range of summerhouse sizes and styles for you to choose from. However, we specialise in making buildings to suit your needs. Whether you need a taller summerhouse, extra or fewer windows, or doors and windows moved, we can do that for you.

Ensure you buy the building that suits you and your family without compromise. Call us on (01483) 237550 or visit our showroom to discuss your needs. We are happy to provide a quote that suits you without pressure.

Can I Have Different Paint Finish On My New Building?

We provide a protective treatment on all our buildings, but why not consider one painted with Sadolin (Diamond Buildings) or Valtti (Platinum Buildings) paint stains..

Both are available in various colours, so you can find a colour that suits you.

Be Careful When Buying A New Building

Before deciding on a new 20×8 summer house for your garden, you should always do your homework (sorry!) as it’s very easy to be taken in by a flashy website leaflet or colour brochure. Try to find time to visit our showroom, where you can see examples on display.

You will then be able to decide what you want to buy. We have a large collection of wooden buildings that you are welcome to view. We will be delighted to show you the different buildings and answer any queries you may have. We can also provide quotations.

Another thing to do is to take a look at the feedback from previous customers, which can be enlightening.

1st Choice Show Room, twixt Woking, Ripley and Guildford in Surrey

All our 1st Choice summer buildings can be made in sizes that meet your requirements. Just let us know what you would like, and we will quote for you. Don’t settle for second best—you know it makes sense.

These sunrooms can be made with internal partitions and extra doors, creating several different areas: one for leisure, one for storage, and one for the children. The choice is yours.

Why Not Consider An Integrated Shed Or Additional Room With Your Summerhouse?

Our Diamond and Platinum Buildings are available with an extra room to suit you. Whether it’s at the back, the side, or accessed from the front, we can create the perfect “Dual-Zone Escape” combo for you. This unique blend of summerhouse and shed provides the ultimate in versatile outdoor living space. Don’t compromise on what you would like to meet your requirements. Contact us NOW to chat through your needs, or visit us to see examples for yourself.

Design Your Bespoke Summer House 20 x 8 In Size Today

To start work on your bespoke building for your garden, get in touch with us or visit our Surrey showroom today.

Configure Building Free Online Quote
Price query? Showroom Del Areas

Painted summerhouse
Insulated Range
Combo summer house Shed
Shed show rooms

FAQs For Summerhouse Sizes

No results!
  • Are These Summerhouses Truly Bespoke To Suit Me?
    Whether you need a taller summerhouse, extra or fewer windows, or doors and windows moved, we can do that for you. To start a custom order, simply contact us to discuss your specific needs and preferences.

    After we learn what you’re looking for, we’ll share a clear plan and price. Our team will walk you through each step to make things easy. Production and delivery usually take about 6 to 8 weeks, and we’ll keep you posted along the way.

    You can count on us to work hard and provide great service as we build the summerhouse you’ve been dreaming of.

    Make sure you get the right building for you and your family. Give us a call at (01483) 237550 or stop by our showroom to talk about what you need. We’re happy to give you a quote with no pressure.
  • How Long Does a Summer House Installation Take?
    Most buildings are assembled in a single day if your foundation is prepared before construction, and depending on the project's size. Our team handles the design, preparation, and delivery of all materials off-site to keep things running smoothly. This efficient process lets us install your structure quickly and with minimal disruption.
  • How Long Does Delivery Take?
    Delivery times change throughout the year, but they are usually between 4 and 8 weeks. For the latest information, please visit our dedicated delivery page. If you need your order by a certain date, please contact us. We will do our best to help.
  • How Long Will My New Building Last
    The durability depends on several factors, including the quality of materials used, the level of maintenance, and exposure to environmental elements. Proper care and regular maintenance can extend its lifespan, while harsh weather conditions and neglect may shorten it. Ensuring that the structure is well-built and using high-quality materials can also contribute to its longevity. Regular inspections and prompt repairs as needed will help to prolong the life of your summer room. Pressure-treated timber is also a good option to choose. You can see some guidelines on this page.
  • Should I View Before Buying?
    When considering a purchase, it is advisable to view the product beforehand, as it allows for a firsthand evaluation of its condition and suitability.

    Viewing the item can provide valuable insights into its quality, features, and overall appearance, which may not be fully evident through online descriptions or images.

    This can help in making an informed decision and potentially prevent any future dissatisfaction with the purchase. Therefore, viewing the product before buying is a prudent step to take to ensure a satisfactory outcome.

    Our showrooms are open seven days a week, and we have over 60 buildings on display.
See our 1374 customer reviews on ★ Trustpilot & WhiteSpark ★ Feedback

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Woking Show Site
1st Choice Leisure Buildings
Woking Garden Buildings Show Site
Sutton Green Garden Centre,
Whitmoor Ln, Sutton Green,
Guildford,
GU4 7QA
Phone: 01483 237550
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  • 1st Choice Leisure Buildings
    Woking Garden Buildings Show Site
    Sutton Green Garden Centre,
    Whitmoor Ln, Sutton Green,
    Guildford, GU4 7QA
    Twixt Woking, Ripley and Guildford in Surrey.

    Call us: 01483 237550

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